BRITISH CHEMICAL AND PHYSIOLOGICAL ABSTRACTS
ISSUED BY THE Bureau of Chemical and Physiological Abstracts [Supported by the Chemical Society, the Society of Chemical Industry, the Physiological Society, the Biochemical Society, and the Anatomical Society of Great Britain and Ireland]
JULY, 1 9 4 3
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JULIAN L. BAKER, F.I.C. C. R. HARINGTON, M.A., Ph.D., F.R.S. G. L. BROWN, M.Sc., M.B., ‘Ch.B. L. A. JORDAN, D.Sc., F.I.C. H. W. CREMER, M.Sc., F.I.C., M.I.Chem.E. G. A. R. KON, M.A., D.Sc., F.R.S. C. W. DAVIES, D.Sc., F.I.C. H. McCOMBIE, D.S.O., M.C., Ph.D., D.Sc ., F.I.C. H. J. T. ELLINGHAM, B.Sc., Ph.D., F.I.C. B. A. McSWINEY, B.A., M.B., Sc.D.
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A., II.— ORGANIC CHEMISTRY CONTENTS
I. Aliphatic ..... 181 VII. Alkaloids ...... 210 II. Sugars and Glucosides . 184 VIII. Organo-metallic Compounds 210 III. Homocyclic .... 184 IX. Proteins ...... 211 IV. Sterols and Steroid Sapogenins 198 V. Terpenes and Triterpenoid Sapogenins 202 X. Miscellaneous Unclassifiable Substances . 211 VI. Heterocyclic .... 205 XI. Analysis ...... 211
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FO R 1942
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CONTENTS
GENERAL AND PHYSICAL CHEMISTRY, by H. W. M e l v i l l e . (Collaborators: C. E. H. B a w n , W. F. B e r g , G. G e e ).
INORGANIC CHEMISTRY, by H. J. E m e l Ii u s . (Collaborators : A. L. G. R e e s , A. J. E. W e l c h ).
CRYSTALLOGRAPHY, by J. M. R o b e r t s o n .
ORGANIC CHEMISTRY, by F . S. S p r in g a n d T. S. S t e v e n s . (Collaborators : M . P. B a l f e , J. W . C o o k , J. K e n y o n , E. G. V. P e r c iv a l ).
BIOCHEMISTRY, by L. J. H a r r i s . (Collaborators: C. G. A n d e r s o n , E. C h a i n , J. L. C r a n m e r , H . W. F l o r e y , A . N e u b e r g e r , F . W. N o r r i s , R. M a r k h a m ).
Publishers: THE CHEMICAL SOCIETY, BURLINGTON HOUSE, PICCADILLY, LONDON, W.l. BRITISH CHEMICAL AND PHYSIOLOGICAL ABSTRACTS
A., II.—Organic Chemistry
JULY, 1943.
since (I) is optically active whereas (IV) is racemic. The identity I.— ALIPHATIC. in structure of (I) and (IV) is established in another manner. Isomérisation of «-paraffins.—See B., 1943, II, 142. II. Treatment of lavandulyl acetate with HBr-AcOH at 0° followed by elimination of HBr by C6H 5N, hydrolysis, and puri Co-ordination of silver ion with unsaturated compounds. II. cis- fication of the product through the H phthalate leads to a partly and /rans-AÆ-Pentene. H. J. Lucas, R. S. Moore, and D. Pressman. inactive material from which the homogeneous allophanate (V), ITT. Mixtures of trimethylethylene and qyc/ohexene. H. J. Lucas, m.p. 139—140°, of ¿solavandulol [/3/-dimethyl-£-hydroxymethyl- F. W. Billmeyer, jun., and D. Pressman (/. Amer. Chem. Soc., A0£-heptadiene] is isolated. fi-Methyl-e-methylene-AP-hepten-[,-one 1943, 65, 227—229, 230—231; cf. A., 1938, II, 224).—II. Dis (VI), b.p. 67—68°/ll mm., is obtained in very small yield by con tribution consts. K-w and AD for cis- (I) and trans-Ai-pentene (II) densing methylheptenone (VII) w ith H 20-Et0H -CH20 containing and mixtures thereof between CC14 and (i) H 20 and (ii) n -K N 0 3 NaOAc and better from the ketone and paraformaldehyde in boiling and argentation consts. K 0 and AE are determined. cis-Configur- C6H 6-E t20 containing NaNH 2 (0-33 mol.) and N a 2S 0 4 ; it is freed ation favours solubility in H20 and co-ordination. Since (I) and from unchanged (VII) by taking advantage of its- inability to react (II) have distinguishable K 0 and A’E, isomérisation does not occur w ith N a H S 0 3 and purified through the semicarbazone, m.p. 163— in the Ag complex. For mixtures of (I) and (II), Aw and Ko, b u t 165°. The position of its double linkings is established by its not Ad and AE, agree with the calc. vais. absorption spectrum. It is reduced by Al(OPr0)3 in PrflOH to III. Similar data are recorded for cyclohexene and CHMe!CMe2. Lmethyl-y-methylene-by-hepten-fi-ol, b.p. 84°/13 mm., which closely The lower vais, of AD and AE for mixtures are due to the effect of resembles linalool (VIII) and borneol in odour; it gives an allo one define on the solubility of the other in the aq. layer. Mixed phanate, m.p. 97°, acetate, b.p. 81—83°/12 mm., and non-cryst. olefines may be analysed by means of the above-named consts. 3 : 5-dinitrobenzoate. Under defined conditions (VI) is transformed R. S. C. by MgMel into ^l,-dimethyl-y-methylene-Ae-hepten-ffiol (IX), b.p. Polymerisation of pure olefines by phosphoric acid catalyst under 80—82°/12 mm., which is purified through the borate and charac atmospheric pressure.— See B ., 1943, II, 141. terised as the phenylurethane, m.p. 81—82°; it is very similar to (VIII). Allyl isomerisation of (IX) is effected through the bromide, Structure and ultra-violet spectra of ethylene, butadiene, and their which after treatment with KOAc in COMe2 and hydrolysis affords alkyl derivatives.— See A., 1943, I, 176. an alcohol mixture in which the primary material greatly pre Manufacture of butadiene from ethyl alcohol.—See B., 1943, II, dominates ; after purification through the H phthalate the products 141. gives an allophanate, m.p. 143—144°, which does not depress the m .p. of (V). The incomplete identity of the m.p. is attributed to Condensation of aryldiazonium salts and/or hydroxides with the presence of terpinolene and limonene forms in differing pro secondary nitroalkanes.— See A., 1943, II, 186. portions. (I) is therefore f3£-dimethyl-E-hydroxymethyl-Aft-heptadi- ene, of which Ruzicka’s alcohol is a not quite homogeneous form. Oil of lavender. I. Lavandulol, a new monoterpene alcohol from Tetrahydroisolavandulyl allophanate has m.p. 99—100°, and iso- oil of lavender. H . Schinz an d C. F. Seidel. II. Constitution of lavandulyl 3 ; 5-dinitrobenzoate has m.p. 74r—75°. The differences lavandulol. H. Schinz and J. P. Bourquin (Helv. Chim. Acta, 1942, betw een afl- and /3y-unsaturated terpene alcohols and the occurrence 25, 1572— 1591, 1591— 1611).— I. Lavandulol ( I ) , b.p. 94—95°/13 of irregular isoprene chains are discussed. H. W. mm., ajf —10-20°, is most easily isolated from the esters of oil of lavender, which are hydrolysed and then treated with o-C6H 4(CO)20 Production of methyl alcohol.—See B., 1943, II, 142. to separate linalool from the primary and sec. alcohols. From the latter mixture (I) is isolated by fractional distillation and -finally ^-Saccharin chloride, reagent for identifying alcohols.— See A., purified through the allophanate (II), m.p. 117— 118°, [a]!,0 —8-5° 1943, II, 211. in MeOH. Isolation of (I) from the free alcohols which contain Purification of aliphatic acids and anhydrides.—See B., 1943, geraniol (III), nerol, and citronellol is rendered difficult by the II, 143. presence of much borneol; it may be effected through the allo phanate, the m.p. of which as thus prepared is >113—115°. In Manufacture of esters of chlorine-containing organic acids.— See odour (I) closely resembles (III). Their physical properties are B., 1943, II, 143. closely similar but (I), unlike (III), does not give a compound with Essential unsaturated fatty acids. P. Karrer and H. Koenig CaCl2 and is not dehydrated by 0-C6H 4(CO)2O at 200°. (II) usually (Helv. Chim. Acta, 1943, 26, 619— 626).-—Linoleic acid is converted has m.p. 117—118°; if large'quantities of material are available by boiling SOCl2 in to its chloride, b.p. 159°/0-09 mm., and thence this can be raised to 119—120° but products of m.p. 110— 112 ° by CH 2N 2 in Et20 into the corresponding CHN 2 ketone. This is are then also obtained. All specimens give very closely similar (I) directly treated with Ag20 in EtOH at 60° and the product is on hydrolysis. Alcohols obtained from the specimens of lower hydrolysed to is^-nonadecadienoic [homolinoleic] acid (I), b.p. 177— m.p. give the same product (allophanate, m.p. 119—120°) when 178°/0-2 mm. (I) is converted by ozonisation in CC14 followed by warmed with AcOH, probably owing to a transformation of admixed oxidation with H 20 2 into sebacic acid. Similarly (I) is transformed limonene forms into more stable terpinolene forms. (I) gives an into th e chloride, b.p. 173°/0-l mm., CHN 2 ketone, and AKv-eicosa- acetate, b.p. 61—63°/0-3 mm., which resembles linalyl acetate in dienoic acid (II), b.p. 198°/0-08 mm. Phytenic or phytadienoic odour, a 3 : 5-dinitrobenzoate, m.p. 59—60°, which darkens super acid, (I), or (II) cannot replace linoleic acid as essential fatty acid ficially on exposure to light, a non-cryst. phenylurethane, and an and in the organism of the rat there is no appreciable formation of anthraquinone-2-carboxylate, m.p. 62—63°. Hydrogenation (Pt0 2 in linoleic acid by ¿9 oxidation of (II). H . W . EtOAc) of (I) gives a H 4-derivative, b.p. 93—94°/12 mm., a ÿ + 12-84° (allophanate, m .p. 101— 102°), which is saturated towards Jasmine perfumes. II. Synthesis of lactones with jasmone-like C(N02)4; in an individual, unrepeatable experiment with an in structure. L. Ruzicka, F. Lardon, and P. Treadwell (Helv. Chim. efficient catalyst a H2-compound was obtained. With SOCl2 (I) Acta, 1943, 26, 673—679 ; cf. A., 1934, 75).—The prep, and purific gives a sulphite, hydrolysable to unchanged (I). Attempted ation of COMe-[CH2]3-OAc from CH20 and COMe2 is very difficult. degradation of (I) by 0 3 or K M n 0 4 gives only COMe2, CH 20 , Hydrogenation (Pd-CaC03 in EtOAc) of CHAclCH-OBz gives y-keto- H 2C20 4, and an inseparable mixture of more complex fragments. n-butyl benzoate (I) (semicarbazone, m.p. 156°; p -nitrophenylhydraz- (I) resembles closely the alcohol (IV) obtained by Ruzicka et al. one, m.p. 128— 128-5°), which gives BzOH and COMe-CHICH., when (A., 1935, 605) by the condensation of methylheptenone with CH20 distilled in a high vac. but can be purified by mol. distillation. It in presence of Ba(OH)2, followed by treatment of the product with is hydrolysed with exceptional ease. (I) is transformed by n- MgMel and oxidation of the resultant glycol. (IV) gives an allo C5H u-CHBr-C02Et and Zn in dioxan into ^-methyl-a-w-amyl-AK- phanate, m.p. 113— 114°, and a 3 : 5-dinitrobenzoate, m.p. 65—67°, pentenolactone [dihydrojasmone lactone] (II), b.p. 105— 108°/0-5 mm., which do not depress the m.p. of the corresponding derivatives and BzOH. Similarly (I) and Et ayS-tribromo-n-heptoate yield of (I). T he anthraquinone-2-carboxylate of (IV) has m.p. 99—100° f}-melhyl-a-n-AP'-pentenyl-Aa-pentenolactone [jasmone lactone] (III), and the allophanate of the H4-derivative of (IV) has m.p. 91—92°. which absorbs 2 H 2 (Adams). The odour of (III) resembles that of a direct mmnarison of (I) and (IV) or their derivatives is difficult jasmone and of (II) dihydrojasmone. H. W. 182 183 A., II.—ii,' SUGARS AND GLUCOSIDES. ni, HOMOCYCLIC. 184 Electrolysis oi mixtures oi nitrate with malonic acid, the hydrogen II.— SUGARS AND GLUCOSIDES. •aster oi malonic acid, ethyl- and dimethyl-malonic acid, and succinic acid. F. Fichter and W. Steinbuch (I-Ielv. Chim. Acta, 1943, 26, Raman spectra of sugars.—See A., 1943, I, 176. 695—-704).—Electrolysis of the mixtures gives the nitrates of esters A. Stoll, J. of monobasic OH-acids but the greater part of the material is used Heart glycosides. XX. Structure of scilliroside. Renz, and A. Helfenstein (Hclv. Chim. Acta, 1943, 26, 648— 672; in the Kolbe synthesis. Mixtures of KN03 and CH,(C02I<)2 give cf. A., 1942, II, 218, 279).—The structure [A ; R = H) is assigned small amounts of (CH2-0-N02)., and ([CH„]2-0N 02)2. Under similar to scilliroside is oxidised by Cr03 or Pb(OAc)4 to a sub conditions C02Et-CH2-C02K gives N 02-0-CH„-C02Et, (CH2-C02Et)2, (I), (i) stance (II) very freely sol. in H20 or EtOH which could not be EtOAc, and* some CH0-C02Et. C02Et-CHEt-CO.,K yields caused to crystallise whereas its N 02-0-CHEt-C02Et with the two isomeric E t2 diethylsuccinates. O tetra-acetate (III) affords de- and CHMeiCH'COjEt, CHEt(C02Et)2, and possibly COEt-C02Et, / \ hydroscilliroside tetra-acetate C02Et-CMe2-C02K affords E t a-kydroxyisobutyrate nitrate, b.p. 89— HÇ 2i 2-iço (XV) (A ; R = Ac. 12-CH-OH 91°7lO mm. [converted by reductive hydrolysis with Ba(SH)2 into OH-CMc2-CO.,H and by heating with p-toluidine at 140° into C so 23C-OAc to 12-CO), m .p. 228— 230°, [a]?? -81-8° in CHClj, -82-5° in OH-CMeI,CO-NH,C0H4Mc-j!>, m.p. 132— 133°], with (CMc2-C02H)2, M eOH (semicarbazove, decomp. CH2:CMe"C02Et, and CMe2(COsEt)2. C02Et-[CH2]2-C02K yields 220°), also obtained by acétyl ([CH2]2-C02Et)2, N 02-0-[CH2]2-C02Et, and CHCCH-CO.Et. atio n of The absorption H . W . (II). curves of (II) an d (IV) are very Stereochemical studies. XXHI. Optically active dibromosuccinic closely similar. (IV) is readily B. Holmberg (Arkiv Ketni, M in., Geol., 1941, No. 33, acids. 14, B, dehydrated by mineral acids in 7 pp.).—CHPhMe-NH, is no better than morphine or cinchonine aq. EtOH to anhydrodehydro- for resolving j--(CHBr-C02H)2 (I), but is suitable for final optical scilliroside tetra-acetate, m.p. purification of the stereoisomerides. (I) is shown by its A'-ray 228°, Hx,0 -100° in MeOH, the spectrum to be a racemate and not a ¿/-mixture. Vais, of [a]},8 for absorption spectrum of which optically active (I) in EtOAc, EtOH, and H20 are given. The "indicates a constitution [A) but dccomp. of (I) in neutral solution takes place via a lactone with a with double linkings C(b: 14) and C(S:u); the CO group appears to of opposite sign, and is inhibited by Br'. M. H. M. A. facilitate the formation of a conjugated system. (IV) is converted TJnsaturated acids and thioacetic acid. B. Holmberg and E. by treatment with NaOH-MeOH followed by dil. acid and then' by Schjanberg [Arhiv Ketni, Min., Geol., 1940, 14, A, N o. 7, 22 pp. ; acétylation into Me deacetyldehydroisoscillirosidate penta-acetale (V), cf. A., 1939, II, 155).—AcSH reacts with unsaturated acids, includ m.p. 174°, [a]?? +55° in MeOH. (IV) is hydrogenated (Pt02 in ing cis-C02H-CMe:CH-C02H (I) and (:CH-CO)20 (II), but not MeOH ; Pd or Raney Ni does not offer any advantage) to a mixture trans-(l), citraconic anhydride, or aconitic acid, to give (room of neutral isomcrides from which a compound (VI), C38H 530 ,4l tem p , o r 100°) SAc derivatives of saturated acids in good m.p. 216—217°, [a]|,0 —52-5° in MeOH, is isolated and an acid yield, the direction of addition being the same as for HC1, mixture which yields a substance, C3gH 3B0 14, m.p. 196— 198°, [a]!’ except with CH2:CH-CH,-C02H and (I). The SH-acids (deacetyl- — 54-5° in MeOH. The corresponding Me ester has m.p. ~155° ation with cold "aq. NaOH) are oxidised (I-AcOH) to disulphido- and does not appear to be homogeneous ; it is oxidised to a diketone diacids, and their CH2Ph thioethers with neutral H20 2 to sulph- (disemicarbazone, C2,H 440 4 N8). Tetrahydrodeacetyldeoxyscilliroside oxides and thence (KMn04) to sulphones. The following are prepared is transformed by Ac,0-C5HsN into a mixture of tctra-acetates, m.p. as above : fi-acetylthiolpropionic, m .p. 52—54°, fi-acetylthiol-, b.p. 240°, [a]?,0 +35° in MeOH, and m.p. 219°, [aft0 +36° in MeOH, the 129—130°/3 mm.', B-benzylsulphinyl-, m .p. 70— 75°, clear a t 78° former of which is oxidised by Pb(OAc)4 to telrahydrodeacetyldeoxy- (also from CHMeBr-CH2-C02H) ( m.p. 66— 68°), fi-benzyl- dehydroscilliroside tetra-acetate, m.p. 176—177°, hydrogenated (PtO, sulphonyl-, m .p. 132—133°, y-acetvlthiol-, b.p. 138-5—139°/3 m m ., in MeOH) to a substance which appears to be identical with (VI). y-thiol-, b.p. 85—87°/0-05 m m . [thiolactone, b.p. 55—56°/3-5 m m ., Me deacetylfsoscillirosidate penta-acetate is resistant towards formed on distillation), yy'-disulphido-di-, m.p. 109—110°, and Pb(OAc)4 but is slowly oxidised by Cr03 to the compound (VII), y-benzylsulphoiiyl-butyric, m.p. 148—149°, acelylthiolsuccinic, m .p. 125—126°) [much slower from trans- than from cts-(!CH-CO,H),] [anhydride, m.p. 71—73°, from (II)], p-acelylthiol-^-phenylpropionic, m.p. 95—96°, acetylthiomethylol-, m.p. 90-5—91-5°, and thiomethylol- succinic, m.p. 107-5—108-5° (y-thiolactone, m.p. 109— 110°, on heat ing), acids. (I) gives slowly the diastereoisomeric a-acclylthiol-ft- methylsuccinic acids (III), A, m.p. 151—153°, B (impure), m.p. 108—112° (dccomp.), and thence a-thiol-f-methylsuccinic acids (IV), A, m.p. 108—110°, B, m.p. 189—190° (dccomp.), and C H 2Ph thioethers, A, m .p. 141— 142“, B, m.p. 156—157°. Ac20 and (IV) B give (III) A. SH-CMe(C02H)-CH2-C02H [Ac derivative, m.p. m.p. 192°, [a]!? —37-5° in MeOH (disemicarbazone, decom p. 172°). 122— 123-5°; CH2Ph thioether, m.p. 153—154-5°) gives with Me tetrahydrodeacetyldeoxyisoscillirosidate (loc. cit., new m.p. CH2C1-C02H a-carboxytneihylthiol-a-meihylsttccinic acid, m.p. 132— 240—242°, [aft0 —24-6° in MeOH) is hydrolysed b y acid to glucose 133°. ' M. H . M. A. and a doubly unsaturated acid, C24H 240 4, m .p. 185° (decomp.) after softening, [aft0 —13-5° in MeOH, hydrogenated (P t02 or Pd-C) Configurative relationship between optically active malic and thio- to the saturated acid, C24H280 4, m.p. 168°, [aft0 +15° in MeOH. malic acids.—See A., 1943, 1, 154. The presence of a difficultly-reactive, nuclear double linking is Photometric determination o£ ascorbic acid.—See. A., 1943, III, (I) is established by the oxidation of (I) by Bz02H to the corre 502. sponding oxide, m.p. 228—230°, softens at 215°, [aft0 -34-5° in Production of y-keto-j3-methylbutanol and methyl /ropropenyl MeOH. The structure of (I) is based on the following consider ketone.—See B., 1943, II, 144. ations. Acid hydrolysis removes from (I) a mol. of glucose which Manufacture of polyalkylenepolyamines.—See B., 1943, II, 144. in analogy with the other heart glucosides is supposed to be attached a t C{3). T he sec. nature of OH united to sugar is experimentally Stereochemistry of labile compounds of tervalent nitrogen.— See established. The aglycon has not been isolated but all the evidence A., 1943, I, 175. indicates a steroid stru ctu re. A bsorption spectrum and behaviour Structural characteristics of amino-acids.—See A., 1943, I, 177. towards alcoholic* alkali show that (I) like scillaren-ri has a doubly unsaturated, six-membered lactone ring; this contains OAc assumed Occurrence of ¿-glutamic acid in protein of tumours and healthy to be a- to CO. (I) contains a free sec. O H w hich can be oxidised organs.—See A., 1943, III, 402. to CO but not acylated; its position at C<12> is established. The Synthesis of peptides by transamination. R- M. Herbst and D. presence of tert. O H , readily rem ovable as H 20, a t C(14> is proved. Shem in (J . Biol. Chem., 1943, 147, 541—547).—Alternate additions I he resistant nuclear double linking in (I) can be hydrogenated of N-NaOH and ClC02CH2Ph to an ice-cold solution of ¿/-alanyl- afte r oxidation of O H a t C(l2, o r elim ination of O H a t C(14) with alanine gives two modifications of dX-carbobenzyloxyalanylalanitie, production of a second nuclear double linking; this observation m.p. 144-5— 145-5° (I) and 168— 169° (II) (softens at 165°) respect and the absorption spectrum of (I) indicate the presence of the ively, with considerable proportions of. material of m.p. 133-5— linking at C<8; a). H. W. 135° (III), which may be a mol. compound, a solid solution, or a fortuitous mixture of (I) and (II). When an aq. solution of pyruvyl- Configuration of starch and its crystalline degradation products. See A., 1943, I, 177. alanine and ¿/-NHj-CHPh-CO.H is boiled under N, transamination occurs accompanied by formation of C02 and PhCHO. The product Non-carbohydrate substances in the cereal starches.— See A., 1943, is converted by ClC02CH2Ph into a mixture of (II) an d (III). A III, 446. scheme is suggested for the biological synthesis of peptide chains from non-amino-acid precursors involving two simple reactions, III.— HOMOCYCLIC. animation and acylation. H. W. Highly hindered stilbenes. R. C. Fuson, J. J. Denton,rand C. E. Preparation of urea nitrate.—See B., 1943, II, 143. B est ( / . Org. Chem., 1943, 8, 64— 72).—Three hindered stilbenes 185 A., II.— h i, HOMOCYCLIC. 186 are shown to react with H2, KMn04, 0 3, Bz0.2H, Na, K-Na, and a which with A1C13 in light petroleum (b.p. 60—80°) gives 1-hei.o- AgOBz-I complex normally but frequently much more slowly than 1-taxt.-butyl-\ : 2 : 3 : 4-telrahydronaphlhalene, m.p. 101—-102-5° (sem i do the unhindered stilbenes. a/J-Dimesitylethylene (I), m.p. 132-5— carbazone, m.p. 225—226°). Clemmensen reduction then affords 133-5°, is obtained by the action of MgMel, Mg-Mgl2, or Mg alone (II), w hence (I). (II) is oxidised by aq, I
sufficient time must be allowed for the coupling before addition of NH 3 light petroleum into 2-hP-pentadecinenylveratrole (I), b.p. 192 / ;>i.ids. In stab ility of th e chrom ophoric azo-linking and ease of 1-4 mm. (I) is hydrogenated (R aney Ni in 95% E tO H a t 31°) purification, these products are superior to those derived from the to cis-3-AB-pentadecenylveratrole (II), b.p. 198°/2 mm., but is primary NOa-alkanes. If the original amine contains acidic auxo- reduced by NaNH 2 in liquid NH 3 to the trans-isomeride (III), b.p. chromic groups, the condensation product dyes silk and wool 212°/3-2 mm., of (II). Complete hydrogenation (Raney Ni) directly; coupling may be made on the fibre. The following are gives 3-pentadecylveratrole [tetrahydrourushiol Me2 ether], m.p. described : p-nitro-p-benzeneazo-, b.p. 98-0°/7 mm., -p-o-, m.p. 56-9°, 36*8—37°. (Ill) is oxidised by powdered KMn0 4 in COMe2 and m.p. 71-2—72-2°, -nitrobenzeneazo-, -p-i-nitro-o-toluene- to m-C6H 13-C 02H and 2:3: l-(0M e)2C8H 3-C 02H. 2:3:1- azo-, m.p. 70-1°, -p-p-acetamidobenzeneazo-, m.p. 125-3—125-8°, (OMe)2C6H3-CHO is reduced (Clemmensen) to 2 : 3-dimethoxytoluene, -p-p-chlorobenzeneazo-, m.p. 67-8°; -p-p-bromobenzeneazo-, m .p. 90— b.p. 103°/22-5 mm. H.W. 91°, -p-2 : 5-dichlorobenzeneazo-, m.p. 57—58°, -p-2 : 4 : G-tribromo- benzeneazo-, m.p. 58-1°, -p-p-tolueneazo-, m.p. 20 + 1°; -P-o-, m.p. 2 : 4-Dinitro-5-arylaminophenols.—See B., 1943, II, 172. 93-2—93-6°, and p-p-carboxybenzeneazo-, m.p. 167—169°, and -p-2- 4-Nitro-3-ethoxytoluene-6-sulphonic acid. C. B uchanan, J. D. naphthaleneazo-propane, m.p. 67°; p-nitro-p-m-nitrobenzeneazo-, m .p. Loudon, and J. Robertson (J.C.S., 1943, 168— 169).—m-C8H 4Me-OEt 63-3— 63-7°, -p-i-nitro-o-tolueneazo-, m.p. 48-9°, -p-2 : 5-dichlorobenz- (I) and conc. H 2S 0 4 at <30° give 3:1: 6-OEt-C8H 3M e-S03H (II) eneazo-, m.p. 40—40-3°, -p-2 : 4 : G-tribromobenzeneazo-, m.p. 57-4— (p-toluidine salt, m.p. 100— 120°; chloride, b.p. 176—177°/10 mm.; 58°, and -p-p-carboxybenzeneazo-butane, m.p. 129—130°. p~Nitro- amide, new m.p. 113—114°). (I) and conc. H 2S 0 4 a t 30— 35° for P-phenyl-1 : i-phenylenedisazo-propane, m.p. 107—108°, and -butane, 12 hr. followed by H N 0 3 (d l-4 2 )-H 2S 0 4 a t 15— 18°, th en a t room m.p. 80-9—81-4°, are described. pp'-Di-p-(p-nitropropaneazo)di- temp., yield 4 : 1 : 3 : 6-N0 2'C 8H 2Me(0Et)*S03H (III) (p-toluidine phenyl has m.p. 162—163-6°. H. W. salt, m.p. 232—233°; chloride, m.p. 110—111°) and some 2-N02- Products of the action of azobenzene-p-carboxyl chloride on isomeride (gelatinous ^i-toluidine salt; chloride, m.p. 97°). (Ill) is a-aminocarboxylic acids and their esters. P. Karrer, R. Keller, also formed from 4:1: S-NOjjCsHjM e-OEt and C1S03H a t 20°. and G. Szonyl (Helv. Chim. Acta, 1943, 26, 38—50).—Attempts are W hen H N 0 3 is added to (I)-H 2S 0 4 a t 10— 15°, th en a t 15— 20°, described to obtain N-acyl derivatives of NH2-acids suitable for 6:1: S-NOj'CjHaMe-OEt is obtained. 2 : 4 : 1 : 3 : 6- chromatographic separations. Agitation of ^-PhN2-C.6H 4-COCl (I) (N 0 2)2C8HMe(0Et)-S03H (p-toluidine salt, m.p. 225—227°; chloride, in Et20 with Tv aline in 2N-NaOH at room temp, affords 2-p- m.p. 104°) is obtained from (II) (Na salt) and HN0 3 (d l-5 )-H 2S 0 4 benzeneazophenyl-4:-isopropyloxazol-5-one [N -p-benzeneazobenzoylval- at <30°, or [with some (III) and 4:6:1: 3-(N 0 2)2C8H 2Me-0Et] from ine lactone] (II), m.p. 115°, (which gives dark violet alkali salts), (II) and HN0 3 (d 1-5). (Ill) (Na salt) and aq. NaOCl-NaOH at 1- (III), m.p. 157—159°, [a]jf -44-85° in EtOH, and r-, m.p. 229— 50—55° afford a trace of stilbene derivative [/>-toluidine salt, m.p. 230°, -PS-p-benzeneazobenzoylvaline, the latter arising from the ~285° (decomp.); sulphonyl chloride, C18H 16O 10N 2Cl2S2, m.p. 212— hydrolysis of (II). Under similar conditions (I) and Z-leucine yield 215°], whereas at 85°, then at room temp., similar treatment yields 2-p-benzeneazophenyl-4,-\sobutyloxazol-5-one, m.p. 147°, and r-N-p- a substance (p-toluidine salt, C 18H 180 12N 2S2,2C ,H 9N, decomp. benzeneazobenzoyl-leucine (IV), m.p. 173°. Glycine yields N-p-benzene- 310—311°), converted by Fe-HCl at 100° into a substance, azobenzoylglycine (V), m.p. 225°, apparently without the correspond C 18H 220 8N 2S2,2H 20, m.p. >350°. A. T. P. ing lactone. \(-\-)-iA-p-Benzeneazobenzoylalanine (VI), m.p. 220°, Mi? +55-07° in COMe2, but no lactone is derived from /( + )-a!anine. l-Nitro-l-a-hydroxyethylcycfohexane.— See B., 1943, II, 172. The M e esters of (III), m .p. 138°, [a]£? -3 8 -4 ° in COMe2, (IV), m.p. woPhorone and its derivatives. A. A. Dodge and E. Kremers 133°, (V), m.p. 118°, and (VI), m .p. 148°, [a]}? +38-4° in COMe2, (J .Amer. Pharm. Assoc., 1942, 31, 527— 529).— isoPhorone (I) (oxijne, are obtained by means of CH2N2. Gradual addition of (I) to the m.p. 77—78°; semicarbazone, m.p. 190—191°) is hydrogenated appropriate NH2-acid ester hydrochloride in C6H 5N at 40—60°. (P t; 2 H 2 absorbed) to 3 : 3 : 5-trimethylcye/ohexanol, m.p. 58-5—59° leads to the M e esters of N-p-benzeneazobenzoyl-l-leucine (VIII), (3 : 5-dinitrobenzoate, m.p. 98-5—99°; acetate, an oil), dehydrated m.p. 104°, [a]i? +22-6° in COMe2, -1 -glutamic acid, m .p. -126— 128°, to an oil from which is separated (?) 1 : 3 : 3-trimethylcyciohexene, [a]Jo8 —11-6° in COMe2, -1 -phenylalanine, m.p. 145—146°, [a]888 b.p. 139—141°. The liquid (3 : 5-dinitrobenzoate, m.p. 61-5—63°) — 99-2° in COMe2, -1 -aspartic acid, m.p. 148—150°, [a]888 —17-3° in and cryst. “ isophoronyl alcohol,” m.p. 38° (3 : 5-dinitrobenzoate, COMe2, -1 -methionine, m.p. 118— 119°, [a]888 —27-32° in COMe2, and m.p. 71-5—72-5°), are probably cis- and inzMs-dihydrofsophorol. -1 -proline, m.p. 125—126°, [a]J27 —36-27° in COMe2. The chromato F. O. H. graphic separation of mixtures of the Me esters of (V), (VI), and (III) Phenol-formaldehyde resins. II. Condensation of dihydroxy- w ith (VII) on basic Zn carbonate is described; Ca(OH)2 and Al2Oa benzenes with formaldehyde. H. von Euler, E. Adler, and G. J. Gie are less suitable. H. W. (Arkiv Kemi, Min., Geol., 1940, 14, B, No. 9, 7 pp. ; cf. B., 1942, II, 25).—Quinol (I) (1 mol.), CH20 (2 mols.), and 10% NaOH Nuclear methylation of a-naphthol. A correction. J. W. Corn- forth, (Mrs.) R. H. Cornforth, and (Sir) R. Robinson (J.C.S., 1943, (2 mols.) give (36 h r.; room tem p.) exclusively 2 : 5-di(hydroxy- 168; cf. A., 1943, II, 28).—The substance obtained from “ 4-piper- methyl)quinol (II), m.p. (rapid heating) 190—191° (decomp.) [with idinomethyl-l-naphthol ” (I) and NaOMe-MeOH is not 4:1- Me2S 0 4 gives the 1 : 4-M e2 ether, m.p. 163—164°, and thence (K M n04-N aO H ) 2:5:1: 4-(0M e)2C8H 2(C 02H)2], which yields C10H 6Me-OH, but 2 : ^-dimethyl-\-naphthol, m.p. 84—85° (picrate, m.p. 143—144°). That (I) is actually the 2 : 1-derivative (cf. Feld (FeCl3) the quinone, m.p. 138°, and the quinhydrone, m.p. 160° (decomp.), deep blue. With 4 mols. of CH20 and 4% NaOH (1 m an et al., A., 1942, II, 205) is confirmed by hydrogenation (Cu chromite in EtOH at 165°/100 atm.) to 2 : l-C10HeMe-OH (picrate, mol.) (I) (1 mol.) gives (72 hr.; room temp.) tetra(hydroxymethyl)- quinol (III), m.p. (rapid heating) 212—213° (decomp.). On slow m.p. 133—134°). A. T. P. heating (II) and (III) give dark resols without melting. o-C8H 4(OH)2 Colour reactions for stilbcestrol.—See A., 1943, II, 212. (1 mol.), CH20 (2 mols.), and 10% NaOH (2 mols.) give (36 hr.; room temp.) exclusively a di(hydroxymethyl)pyrocatechol (IV), m.p. Mixed /3-naphthyl thioethers. F. E. Ray and G. L. Bowden, jun. 116— 117° (Me2 ether, m.p. 92°). (II) and (IV), but not (III), are (J . Amer. Chem. Soc., 1943, 65, 297).—/S-C^H^SH, AlkBr, and NaOEt in EtOH give p-CwH. n-hexyl, b.p. 160°/20 mm., and n-heptyl converted into amorphous insol. products very rapidly by hot dil. acids, probably by condensation involving elimination of H20 sulphide, m.p. 34°. £-Q,H4Ph-CHPhCl and £-C10H,-SH in C6H 8 between nuclear H of one mol. and CHyOH of a second mol. etc. give p-C10Hi phenyl-p-xenylmethyl sulphide, m.p. 155° (sulphoxide, m.p. 220°), which with Me2S04 gives ^>-C6H4PlrC~Ph-S+Me-C10H 7-/3. M. H. M. A. V III. whence it is regenerated by H20. R. S. C. Phenol formaldehyde resins. Mechanism of the harden ing of resols ; formation of dibenzyl ethers. H. von Euler, E. Aryl hydroxyalkyl ethers.—See B., 1943, II, 172. Adler, and J. O. Cedwall (Arkiv Kemi, Min., Geol., 1941, 14, A, No. 14, 20 pp.).—Evidence is adduced in favour of the view that Ethers of duroquinol.—See B., 1943, III, 135. the action of heat on o-hydroxybenzyl alcohols consists mainly in Synthesis of cis- and /ru«i-3-A°-pentadecenylveratrole, a dihydro the formation of di-o-hydroxybenzyl ethers with minor quantities derivative of urushiol dimethyl ether. D. Wasserman and C. R. of diphenylmethanes. 2:3:5: l-O H -C 6H 2Me2-CH2-OH (I) a t 140° Dawson (/. Org. Chem., 1943, 8, 73—82).—E t2 adipate is reduced gives an alkali-insol. substance (II), m.p. 200°, di-2-hydroxy-3 : 5- (H2 at 255°/1750 lb. in presence of Cu-Cr oxide) to [CH2] 6(OH)2, b.p. dimethylbenzyl ether (III), m.p. 99—100°, di-(2-hydroxy-3 : 5-di- 128—130°/6 mm. (yield 84%), converted by the successive actions methylphenyl)methane (IV), m.p. 146°, and a non-cryst. residue of Na and CH2PhCl in xylene at 120—130° and then at 120° into (34% of the original material) from which NaOH separates an J^-benzyloxyhexanol, b.p. 154°/2-5 mm. This with S0C12 in NPhMe2 alkali-insol. portion (V). (II) does not give a colour with FeCl3, is a t 30—45° gives 1,-benzyloxy-n-hexyl chloride, b.p. 138°/1 mm., the extraordinarily stable towards acids and bases, cannot be acetylated Mg derivative of which with 2:3: l-(OMe)2C8H3-CHO affords the or methylated, and does not react with ketonic reagents. It is expected sec. alcohol, converted (without purification) by KHS04 at identical with the ‘ ‘ polymeric xylo-o-methylenequinone ’ ’ of Fries et 210° into H20 and 3--q-benzyloxy-ha-heptenylveratrole, b.p. 229°/ al. (A., 1907, i, 603) but is probably c 8H 2Me2<°^^;£°g^;gH . 1 mm.; this is reduced (H2 at 2—3 atm., Pd-black, AcOH) to 3-i-¡-hydroxyheptylveratrole, b.p. 169°/2-7 mm. (together with a little The yield is 4— 8% at 140° increasing to 30% at 180°.6 (III)2give2s aqi-dihydroxydodecane, m.p. 82—82-5°), which with HBr at 140— 150° an intense violet colour with FeCl3, yields a dibenzoate (VI), m.p. followed by re-methylation yields Z--q-bromoheptylvexatrole, b.p. 174°/1 108—108-5°, and reacts vigorously with CH 2N 2 giving a M e l ether mm. W ith CH;CNa in liquid NH, this affords 3-A6-noninenylveratrole, (VII), b.p. 155—160°/0-l mm., which is insol. in NaOH but con b.p. 146°/2 mm., transformed by NaNH2 and «-C6H 13Br in liquid tains OH since it yields a p -nitrobenzoate, m.p. 120—121°. (VII) is 1S9 A., IL—in, HOMOCYCLIC. 190 oxidised bv KMnO, to 2methoxy-Z : 5 dimrthylbenzoic acid. m.p. pp i—Examination of observations made with 2:3:5.1- 97—98° Treatment of III or T il with Me^O.-ix-NaOH- OH-C.H.R R '-CHjOH R '= R" = Me; R '= H : R" = Me; A, MeOH gives the Met finer VIII m.p. 73—74°. The constitution = B r, R " = Me) an d 4:3:5: l-OH-CsH,Me,-CH,-OH indicates of III is further established by its production when the p-toluene- that hardening is due to a concurrence of reactions mainly controlled snlphonate of I is heated at 195—2'“)° and the product hydrolysed. bv the structure of the reacting mols., reaction temp., and duration. I; or III and HBr in light petroleum at room temp, give 2-hy droxy- Although quant, differentiations cannot yet be made, the o-quinoife- Z i 5-dimethytUmyl bromide IX , m.p. 73—74°. VII similarlv methides derived from o-hydroxybenzyl alcohols and their ethers gives IX and non-cryst. 2 : 3 : 5 : l-OMe-C,HAIe,-CH,Br. When ran react to give dihvdrosystilbenes I and thence stilbenequinones treatel with Na,CO, IX passes through the quinonemethide into II dihydroxydiphenylethanes HI dimeric quinonemethides II VTil and VI are likewise cleaved by HBr. V is con and thence III 1, and trimeric quinonemethides with succeeding verted by HBr in cold light petroleum into IX in 30% yield. phenolaldehvdes and nuclear-methylated phenols, whereas the Determinatic as of moL wt. ( Kast indicate that V at an v rate to similarly derived p-quinonemethides for structural reasons can give a considerable extent consists of chain or cyclic mois, composed of only (I), H , an d (HI). Resitols formed at low temp, contain 4—5 units of I joined to one another by Ph-O-CHjPh linkings or mainh- ether bridges with some CH, bridges. To a small extent alternatingh- with C H,PhOC H,Ph and Ph-O-C H.Ph linkings. The there is loss of H.O with production of quinonemethides and elimination of CH,0 from (I) is not entirely accounted for bv the loss of CHsO leading to diphenvlmethanes and possibly “ crack production of (IV . In presence of xylenol X, the yield of HI is ing ” with 'production of OH-aidehydes. At higher temp, these < from I alone but its formation remains the fastest reaction and reactions occur to an increased extent and are interlocked. In the added l X is not involved to > a limited extent. H. W. final stages of the reaction pjolymerisation of the quinonemethides and stilbenequinones plays a decisive part in the mol. enlargement. Phenol-formaldehyde resins. IX. Mechanism of the hardening The temp, is the decisive factor for the extent to which the ether of resols : hardening of tri-p-cresol dialcohols. S. Kyrning Arkiv bridges participate in the secondary reactions. The duration Kemi, Min., Geol., 1941,15, A. No. 2. 9 pp. ; cf. * 1940, II, 216).— of reaction is of importance only within a certain initial period. 3 : 5-Ed- 2 -hydroxy-5 -methylbenzyl -p-cresol and CH,0-aq. alkali Subsequently a condition characteristic for each temp, is reached give 3 :5-di- 2Miydroxy-5'-methyl-3'-hydroxv methylbenzyl -p-cresol which then undergoes little further alteration. 4:3:5: 1- (I), m.p. 203: preheated bath , converted by HBr—EtOH into the OH-C4HAIe.-CH.-OH loses H.O and CH.O in a sealed tube at corresponding dibromide H m.p. 172° decomp . Hardening of 155' giving di-t-hydroxv-3 : b-dimethylbenzyl eiher IV . m .p. 173— (I) at 130", 200°, 220e, or 240' is accompanied by loss of 11,0 and 173-5-, converted by boiling AcOH into 4-kydroxy-Z-. o-d ¡methylbenzyl CHjO; the rate of elimination is examined. Mechanisms of the acetate (V), m .p. 77°. IV is largely unchanged at 175° and at 200° hardening process involving formation of larger mois, by junction still evolves little CH.O but gives a small amount of a sublimate of of nuclei through -CH,0-CH,- is outlined. H is also obtained 4:3:5: 1-OH-C 5HAIe.-CHO (oxime, m.p. 166-5—168°). The when the product I insol. in CHCl, formed from I, at 130° is treated residue contains unchanged IV (.CH-CsHAIe,OH-l : 3 : 5 : 6)», with HBr-CHCl^. A. T. P. and iCH.CjHAIejOH ., (IV in CHCl, is converted by HBr into Phenol-fonnaldehyde resins. XIH Mechanism of the harden h-hxdroxy 3 : .Ydimethvlbenzvl bromide, m .p. 11a— 116" (decomp.) ing of resols. Reaction phases of the hardening of dinuelear [with AcOH—NaOAc gives' V \ which in Et.O is converted by dialcohols. H. von Euler, E. Adler, and S. Tingstam Ark:? Kemi. saturated aq. NaHCO, into 3:5:3 : o -tetramethylstilbene-4 : 4 - M m ., Geol.. 1942,15. A, No. 10, 11 pp.).—The course of the harden quinone, softens and blackens at 215—21*'. This with SnCL in COMe, or H.-PtO. in EtOAc gives 4 : 4'-dihydroxy-3 : 5 :_3 : 5'- ing of 1 : 5 : 2 : 3- ( I) and 1 : 3 : 4 : oXH^KAIefOH-CHj-OH“, H is best represented as a consequence of ether condensation and tetramethvlstilbene, m.p. 237—238° (diacetate, m.p. 236—23 > quinonemethide formation with subsequent polymerisation and oxido-redncnon of the quinonemethide groups. The evolution of Quinoidation of triaryl compounds. Diphenylbromonaphthyl- HjO and CH,0 from I an d H is measured at definite intervals at methyl chlorides. L. C. Anderson and D. Jo h n sto n J Atner. 150*. 170', 190", and 210°. Loss of CH,0 is small and >0-2 mol. Chem. Soc., 1943. 60. 239—242).—MgPhBr and 5 : l-C,,H,Br-CO,Me per moL of >1 or H even at 210’. The amount of H ,0 evolved (less well, the acid or acid chloride) in boiling PhMe give an impure increases rapidly to a max. reached at lower temp, in ~~1 hr. and carbinol I , converted by AcCl into diphenyl-o-bromo-l-naphthyi- at higher temp, in —30 min_, after which it remains const. The methsl chloride II (62°0\ m.p. 172— 174°, which with NPhMe. in loss of H ,0 amounts to 1 moL per moL of I or II at 150° increas aq. COMe, gives (I , m.p. 150—151° [with HCl-Et,0 gives only a ing to 1-5— 1-6 p er moL a t th e higher tem p. A t lower tem p, little II Attempts to prepare 8 : 2X 14H sBr-COAl failed. therefore the essential consequence of loss of HsO is the formation 5:8: 2-Cj^HgBr.-COjEt gives diphenyl-b ; &-dibrorno-2-naphthyicarb- of ether chains ; at higher temp, this is accompanied by an almost inol (77° 0 , m .p.'127—128° (the acid chloride gives only an oily equally rapid production of quinonemethide. At 150e with max. and thence (AcCl the chloride III m .p. 163— 164~. 2-C1#H 7Br, loss of 1-1 mol. of H ,0 per moL of I the resultant resin is com AcCl, and A1C1, in PhNO, give a 1 : 1 mixture (1 : 10 in CS,) of pletely sol. in CHCl,: at higher temp, in proportion as this ratio 6 : 2- and 2 ; l-C.^HjBr-COMe, oxidised by KOC1 to acids, which is exceeded the proportion of resin insol. in CHCl, increases. Appar yield Me 6-bromo-2-naphthoate IV |4 2 °0>, m .p. 123— 124-5". The ently the “ ether-chained ” resin is sol. in CHCl, but as methide derived acid, m.p. 280° (decomp.) (other methods of prep, give poor formation and polymerisation cause moL enlargement and com vields), and E t ester, m.p. 67—68°, are also described. MgPhBr plexity the solnbihty diminishes more and more. With H a fl00°o excess) (LiPh gives an oil) and (IV) in PhMe give diphenyls much more rapid diminution of solubility in CHCl, is observed. G-bromo-2-naphtkylcarbinol, -f-AcOH, m.p. 99—101", and thence At 150s (0-5 moL of H ,0 lost) the product is completely sol whereas th e chloride (V), m.p. 118—119°. 2 : l-Cl5H 4Br-COAIe, a liquid, at 160: i0-95 moL lost 56% of the residue is insoL At higher gives similarlv diphenyl-2-bromo-\-naphthyimethyi chloride ' VI1, temp, complete insolnbility is rapidly attained. Probably quinone- m.p. 203—204°, and thence the carbinol, m .p. 129— 131°. 4 : 1- methide formation occurs sooner with II than with (I and over C,»H,Br-CPh,a or-p-C^Br-CPhCl-C 10H 7-a with AgCl in SO, at laps ether production to a greater extent. (Cf. A., 1943, H, 161.) room temp, rapidly gives AgBr (55— 6o ° 0 in 2-5 days), but none is H. W. formed from H iTH . V , or VT by AgCl or AgjSO, in SO„ Phenol-formaldehyde resins. XIV. Mechanism of the harden Me,SOt, PhCN, or PhNO, in 6—30 days, indicating little tendency ing of resols. Hardening of di- and tetra-aleohols of dihydrie to form transafinTilar qninonoid compounds. All these halides give phenols. S. Kyrning Arkiv Kemi, Min., Geol.. 1942, 15, B, No. 11, red, amorphous products, except (111 which is unchanged in SO,. » pp. .—Investigation of the loss of H ,0 on heating OHCH, R . S .C . derivatives of dihydrie phenols confirms the reaction mechanism Quinoidation of triaryl compounds. Diphenylhydroxynaphthyl- advanced for the resol hardening of the products from mono- and earbmols. L. C. Anderson and D. G Thomas J. Amer. Chem. di-alcohols of monohydric phenols. The loss of H ,0 from 1:4 : 2 : 5- Soc., 1943, 60 234—238 .—Unsuccessful attempts are recorded to ard 1 : 2 : 3 : 6-(OH .C,H, CH,OHl, is in agreement with the prepiare naphthofuchsones having CO and ICPh, in different rings simultaneous pnodnction of ether, diphenylmethane (I), and of the CltH a nucleus. OH-C,»H, 6 : 2-?H-C 10H 6-CO2E t by M gPhBr. 0-CloH 7-OMe, AcCl, and A1C13 one, m.p. 187— 188° (decomp.) (softens at 184°); hV-O/Z-derivative, ™ P h N 0 2 give 6 : 2-OMe-C10H6-COMe and thence, successively, m.p. 160—161° (decomp.)]. Anhyd. KOAc, boiling AcOH, and (V) ^ 6 : 2- ° M e,cioH6-C 02H, (HBr-AcOH) -OH-C10H 6-CO2H, appear to give a mixture of acetoxycyclohexyl- and cyeZohexenyl- -OH*C10H 6'CO2Me, and (MgPhBr) (II). Zn in AcOH reduces (II) butyrolactone, b.p. 110—114°/0-2 mm. M.p. and b.p. are corr. to o-benzhydryl-2-naphthol, m.p. (anhyd.) 52° or (+*MeOH) 101-5— H . W. 103°. T he M e ester, m.p. 130—131-5°, of 5 : l-OH-C 10H 6-CO2H Lactones related to the cardiac aglycones. XII. Condensation of (prep, from 1 : 5-NH 2-C10H 6-SO3H modified), Me &-hydroxy-2-, m.p. ethyl oxalate with ethyl y-cyc/ohexylcrotonate and a method for 151 152-5°, 7-hydroxy-l-, m .p. 124— 126°, and 6-hydroxy-l-naphtho- predicting the products from such condensations. E. R. Blout, J. ate, m.p. 112—113°, with MgPhBr in Et 20 - C 6H 6 give diphenyl-5- Fried, and R. C. Elderfield (J. Org. Chern., 1943, 8, 37—42).—Past hydroxy-1- (63%), m.p. 199—200° (red liquid), -8-hydroxy-2- (67%), (A., 1942, II, 28, 29) and present experiences of the authors with m.p. 162— 163° (pale liquid), -7-hydroxy-l- (67%), m.p. 231-5— those of Kuhn et al. (A., 1937, II, 438) and Boese et al. (A., 1934, 232-5° (pre-heated bath; orange-red liquid), and -5-hydroxy-l- 632) show that in condensations involving E t 2C20 4 and y-substituted naphthylcarbinol, m.p. 188—190° (pale liquid). ct-C10H 7-OBz and Aa- and A+crotonic esters and their vinylogues, the position origin A1C13 at 150—165° give 1 : 2-, m.p. 64—65°, but at 100° give ally occupied by the double linking is of little importance and the 1 : 4-OH-C10H 6-COPh, m.p. 164—165°. R. S. C. controlling factor is the electronic nature of the substituent at C(y). Condensation occurs in the y-position if this is H. If the Fluorine-substituted aromatic acids. G. P. Hager and E. B. y-substituent is a «-alkyl, condensation takes place at C(y> with S tark ey (J. Amer. Pharm. Assoc., 1943, 32, 44—49).— o-, decomp. progressively poorer yields as the inductive effect of the substituent 106°, m-, decomp. 108°, and £>-C6II 4Me-N2BF4, decomp. 107°, are increases. When the electron-donating capacity of the y-substituent converted into o-, b.p. 114°/763 mm., m-, b.p. 123°/766 mm., and is still further enhanced, as in the case of the cycZohexyl group, / ’-C6H 4MeF, b.p. 110°/767 mm., respectively, from which are ob condensation occurs at C(a>; aryl substituents lead to condensation tain ed : o-, m-, and ^-C 6H 4F-CH 2Br, -C6H 4F-CHO, and o-, m.p. in this position. C6H 6N, used as solvent, has no effect on the course 124°, m-, m .p. 124-5— 125-5°, and £-C„H4F -C 0 2H, m.p. 186°. o-, of the condensation. Gradual addition of Et2C20 4 in dry E taO to b.p. 110— 115715 mm., m-, b.p. 229°/766mm., and £-C 6H 4F-CH 2-CN, KOEt in EtOH—Et20 at 0° and subsequent addition of Et y-cyclo- b.p. 100— 103o/3 mm„ and boiling 60% H 2S 0 4-Ac0H give 0-, m.p. hexylcrotonate in dry C6H 6N to the mixture at 0° gives Et y-keto- 61— 62°, m- (not cryst.), and ^-C 6H 4F-CH 2-C02H, m .p. 82°, respec /J-carbethoxy-S-cycZohexyl-Av-pentenoate (I) as a heavy yellow oil tively. 0-, m.p. 180— 181°, m-, m.p. 166-5°, and ^-fluorocinnamic which could not be cryst. or distilled without decomp. (2 : 4- acid, m.p. 209-5°, and 0-, m .p. 116-5°, m-, m.p. 101°, and p -fluoro- dinitrophenylhydrazone, m.p. 76—77°). It is hydrolysed by conc. mandelic acid, m.p. 133°, are prepared from C6H 4F-CHO. The HCl-AcOH at room temp, to a-keto-fi-carbethoxy-h-cyclohexyl-M- antibacterial activity of the above F-acids is determined. Although pentenoic acid, m.p. 83-5—84° (p-bromophenacyl ester, m.p. 108—- introduction of ^>-Cl, -Br, or -I doubles the toxicity (white rats) of 109°), and the corresponding ji-carboxy-acid, m.p. 217° after decomp, BzOH, p -F has little effect. A. T. P. from 135°. Boiling conc. HCl-AcOH converts either ester into Optically active nitro- and amino-mandelic acids. II. A. Fredga a-keto-S-cyclohexyl-AY-pentenoic acid, m.p. 93—94°, which gives a and E. Andersson (Arkiv Kemi, Min., Geol., 1941, 14, B, No. 38, red colour with FeCl3 in EtOH, and is transformed by boiling AcaO Q-LJ . P T - T ^ 7 pp.).—/>-N02-C6H 4-CHBr-C0Cl with warm aq. NaHC0 3 gives into the corresponding lactone acetate, C6H 11*CH<7q 1-q q ^ C "OAc, + £ -N 0 2-C6H 4-CH(0H)-C02H (I), m.p. 126—127°, in 65% yield. It is resolved by quinidine in boiling aq. EtOH into ( + )-p-nitroman- m.p. 87— 88°. (I) is reduced (H 2-PtOa in abs. EtOH) and then delic acid, (II) m.p. 93—94°, [a]H93 +128-9°, [a]f|61 +151-8° in H20 hydrolysed (KOH) to a-hydroxy-fl-carboxy-8-cyclohexyl-n-valeric acid [quinidine and Pb ( + lH aO) salts]. The acid remaining in the (III), m .p. 126— 127° (di-p-bromophenacyl ester, m .p. 143— 144°). mother-liquors after removal of (II) is resolved by strychnine in Et y-cyclohexylbutyrate, b.p. 86—87°/0-6 mm., is condensed with boiling 30% EtOH into (-)-p-nitromandelic acid (III), m.p. 93— 94°, E t 2C20 4 to E t a-keto-/3-carbethoxy-8-cycZohexyl-«-valerate (2 : 4-di- [a]i>6 —129-2°, [a]f461 —152-1° in H20 [strychnine (+ 2 H aO) salt], nitrophenylhydrazone, m.p. 81—82-5°), reduced and hydrolysed to (I) as Na salt in H20 is reduced (H 2-P d -C ) to (II). H. W. r7 - N H 2-C,H 4-CH(0H)-C02H (IV), decomp. 205—210° after becom Addition of sodium triphenylmethyl and lithium phenyl to cinnamic ing discoloured. Similarly (II) gives (+)- (V), decomp. >200°, ester and benzylideneacetophenone. A. M ichael and C. M. Saffer, becomes yellow at <~140° and brown at 200°, [a]f>5 +106-9°, [a]|j6i ju n . (J. Org. Chern., 1943, 8, 60— 63).-—Me fSyyy-tetraphenylbutyrate + 128-7° in 0-lN-NaOH, [a]?? +133-0°, [a]^61 +157-3° in n-HCI, (I), m.p. 170-5—171° (acid, m.p. 227—228°), is obtained in modest and (III) gives (-)-p-aminomandelic acid (VI), [a]J>5 —106-5° in yield by addition of CPh3Na in anhyd. Et20 to CHPhlCH,C02Me 0-lN-NaOH. (IV) is transformed through the diazo-compound into (II) in Et20 and N 2 at —20°. Considerable polymerisation and r-OH-CHPh-C02H, and (V) into (+)-OH-CHPh-C02H, [a]!5 +153° formation of tar seem to occur and reactions of this type are only in H 20 . (II) and (V) have therefore the same configuration as successful in the complete absence of moisture and enolisable H. /-(+)-mandelic acid whereas (III) and (VI) are related to the Et fiyyy-telraphenylbutyrate, m.p. 127—127-5°, is obtained similarly d - ( - ) - acid. H. W. from CHPh!CH‘C0 2Et. Pyrolysis of (I) gives CHPh 3 and Lactones related to the cardiac aglycones. XI. Synthesis of CHPhXH’COjH. CHMeXH-COjEt does not appear to give an ^-substituted A°0-butenolides from methyl ketones. E. R. Blout additive compound with CPh3Na. aapyy-Pentaphenylpropanol (III), and R. C. Elderfield (J. Org. Client., 1943, 8, 29—36).—The possi m.p. 160-5—161°, obtained by addition of LiPh in Et20 to (II) in bility of preparing these compounds by methods involving the E t20 and N 2 at —20°, passes at 180—200°/4 mm. into aafiyy-penla- removal of a substituent in the a-position of the requisite butyro- phenylpropene, m.p. 214—215°. Li cinnamate has m.p. 303—305° (decomp.). W ith COPh-CHlCHPh, LiPh affords CHPh:CH-CPh2-OH, lactones has been explored. Addition of cycfohexyl Me ketone (I) an d CHCl2-C02Et in Et20 to Mg-Hg gives E t a-chloro-fl-hydroxy- m.p. 110— 111°, and (III). M.p. are corr. H. W. jS-cyclohexylbutyrate, b.p. 110—135°/l-8 mm., converted by HBr in 3 : 4-Dinitrobenzoic acid. H. Goldstein and R. Voegeli (Helv. boiling glacial AcOH into a-chloro-fl-cyclohexylbutyrolactone (II), b.p. Chim. Acta, 1943, 26,475—481).-—-In com pounds 3 : 4 : 1-(N 0 2)2C6H 3X 131— 135°/0-9 mm., m.p. 131— 131-5°. (II) is largely resinified by when X is a substituent of the first order (Cl, Br, Me, OMe) the boiling quinoline whilst boiling NPhMe2 causes only partial removal NOa at C(3) is mobile but when X is a substituent of the second of HC1 with formation of obscure condensation products; C5H 5N order (N02, C0 2H) the mobility is shown by NOs at C(4). 3 :4 :1 - is without action. Boiling 4% aq. NaOH partly converts (II) into (N 0 2)2C6H 3-C 02H (I) [prep, from 1:3: 4-C6H 3M e(N 02)2 described] a-hydroxy-p-cyclohexylbutyrolactone, m.p. 144° (p-nitrobenzoate, m .p. is converted into the chloride, b.p. 204—205°/17 mm., 188°/11 mm., 154—154-5°), whilst anhyd. KOAc in boiling AcOH gives fi-cyclo- m.p. 50—51°, M e ester, m.p. 87°, amide, m .p. 165— 166°, and hexyl-A a0-butenolide[/3-eycfohexyl-Aa-butenolactone] (III), b.p. 115— anilide, m.p. 188—189°. With the appropriate reagent it affords 117°/0-l mm., further identified by conversion into Me /3-formyl- 3-nitro-4-hydroxy-, -4-methoxy-, -4-amino-, -4-dimethylamino-, and 0-cycZohexylpropionate (semicarbazone, m.p. 118— 119°). Addition -4-anilino-benzoic acid. (I) and N 2H 4,H20 in boiling EtOH afford of (I) and CH 2CFC02Et to NaOEt-EtOH at —80° gives Et afl-oxido- 4:3: l-NH^NH'CgHjfNOjjJ'COjH, which could not be purified by fl-cyclohexylbutyrate, b.p. 86—90°/0-3 mm., converted by boiling itself or as N 2H 4 salt (II) but is characterised by its Ac, m.p. 276— HBr-AcOH into a material with an odour of (III) but contaminated 278° (decomp.), and CM e2'., m.p. 243°, derivatives. (II) is trans with other substances of approx. the same b.p. COPhMe, formed by 10% Na 2C 0 3 at 100° into 1-hydroxy-l : 2 : 3-benztriazole- CHCl2-C 02Et, and Mg-Hg afford OH-CPhMe-CHCl-C02Et (IV), b.p. 5-carboxylic acid, decomp, without melting at ~225°, deflagrates at 124—126°/l-5 mm., with some (CPhMe-OH)2. (IV) and boiling 245— 247°. 3-Nitro-4:-phenylhydrazinobenzoic acid, m.p. 241°, changes HBr-AcOH yield COPhMe, Et-a-chloro-f}-phenylcrotonate, b.p. 103°/ at —205°, is transformed by boiling glacial AcOH into 6-carboxy- 5 mm., and /?-phenyl-A“0-butenolide, m.p. 93°. Et (S-hydroxy- 2-phenyl-2 : 1 : 3-benztriazole 1-oxide, m.p. 250°. M.p. are corr. jS-cyc/ohexylbutyrate is converted by boiling HBr-AcOH into H . W. j8-cycZohexylbutyrolactone, b.p. 124— 126°/l-2 mm. (yield 79%), 2-Bromo-4 : 5-dinitrobenzoic acid. H. Goldstein and G. Gianola also obtained in 78% yield by use of boiling H 2S 0 4- A c 0 H -H 20 . (Helv. Chim. Acta, 1943, 26, 173— 181).— 4 : 2 : l- N 0 2-C6H 3B r-C 02H It is brominated in boiling glacial AcOH to fl-x-broniocyc\ohexyl- (prep, from o-toluidine described) is converted by HNOa (d 1-54) butyrolactone (V), b.p. 130—135°/1 mm., m.p. 63—63-5°, converted and conc. H 2S 0 4 at room temp, and finally at 100° into 2-bromo- by 2u-NaOH and subsequent acidification into fi-x-hydroxycyclo- 4 : 5-dinitrobenzoic acid (I), m.p. 184°. Its constitution is estab hexylbutyrolactone (VI), b.p. 140— 152°/0-7 mm. (p-nitrobenzoate, m.p. lished by its conversion by conc. aq. NH 3 at room temp, into 163— 164-5°). (VI) is oxidised by Cr0 3 in 90% AcOH at +30° to 2-bromo-5-nitro-4:-aminobenzoic acid, m.p. 264° (Ac derivative, m.p. p-x-ketocyc\ohexylbutyrolactone, m.p. 82— 83-5° [p-nitrophenylhydraz- 205°), deaminated to 5 : 2 • l-NO.-r.H-Ttr-m/H tl\ nr r-n 193 A., II.—in, HOMOCYCLIC. 194 and NH2Ph at 100° yield 2-bromo-5-nitro-4-anilinobenzoic acid, m.p. xylylpropan-fi-ol (IV) (88%), b.p. 88—90°/2 mm., the bromide (prep, 253-5°, transformed by boiling NH 2Ph, K 2C03, and Cu powder into by P B r3- E t 20) from which with CHNa(C02E t)2-Et0H gives 5:2:4: l- N 0 2-C6H 2(N H Ph)2-C02H and [C6H 2(N 0 2)(N H Ph)-C 02H- (?) 2 : 4 : l-C 6H 3Me2-CMe:CH2, b.p. 82—82-5°/18 mm.; the corre 4:6: 2]2. (I) and boiling 2N-NaOH or MeOH-KOH at 50° yield sponding chloride (prep, by HC1 in light petroleum at 0°) with 2-bromo-5-nitro-4-hydroxy-, m.p. 221°, or -4-methoxy-benzoic acid, anhyd. K 2C 0 3-Me0H at room temp, gives the M e ether, b.p. m.p. 250°, respectively. 2-Bromo-5-nitro-4-dimethylaminobenzoic 62-5—65°/2 mm., of (IV), which with K etc. and then C0 2 gives acid, m.p. 232° (decomp.), is obtained from (I) and aq. NHMe2 a t only oils. Only oils are obtained from 1 : 3 : 5-C6H 3Me2Pr0 by 100°. N 2H 4,H20 and (I) readily yield 2-bromo-5-nitro-4-hydrazino- KCH2Ph and then 0O2. 3 : 5 : l-C 6H 3Me2-CH2-CN with NaNH 2 benzoic acid, m.p. 167° (decomp.) [Ac, m.p. 263-5°, and '.CMe2, and then Mel in Et20 gives a-m-5-xylylisobutyronitrile (impure), m.p. 244° (decomp.), derivatives], transformed by boiling 2N-Na2C 0 3 b.p. 131°/25 mm. (in liquid NH 3 much s-C„H3Me3 is formed), which into 6-bromo-3-hydroxybenztriazole-5-carboxylic acid, deflagrates with in 85% H 2S 0 4 at 100° gives the amide (33%), m.p. 109-5— 110-5°. out melting at 211°. 2-Bromo-5-nitro-4-phenylhydrazinobenzoic acid, Boiling 25% H 2S 0 4 then gives the acid (V), m .p. 116-5— 117-5°, m.p. ~180° when heated very rapidly or 231° (becomes yellow- the chloride (prep, by SOCl2 and C 6H 6N) of which with CH 2N 2- brown at 170—175°) when heated slowly, is converted by boiling C6H 6-E t20 at 0°, Ag20-MeOH, and then NaOH-aq. MeOH gives AcOH into 6-bromo-3-oxido-2-phenylbenztriazole-5-carboxylic acid, only traces of acid. MgMel and (II) in Et20 give a product, orange or yellow needles, m.p. 236°. (I) is reduced by SnCl2 and converted by boiling AcOH -f- a trace of H 2S 0 4 into 1 : 1 : 3 : 3 : 4 : 6- conc. HC1 to 2-bromo-4: 5-diaminobenzoic acid dihydrochloride hexamethylindane, b.p. 114—117°/13 mm., indifferent to KMn0 4 (ID; the free acid blackens almost immediately on contact with air and 0 3-EtBr. Decarboxylation of (I) gives a mixture. Boiling and is characterised as its A c 2 derivative, m.p. 257°. (II) is tran s K M n0 4-N a0H -H 20 oxidises (V) and (I) to a-3 : 5-dicarboxyphenyl- formed by more prolonged treatment with NaOAc and boiling iso-butyric (VI), m.p. 298—300° (Me3 ester, m.p. 73-5—76-5°), and Ac20 into 6-bromo-2-methylbenziminazole-5-carboxylic acid, m.p. 323°, -valeric acid, m.p. 247—250° (also formed with H N 0 3-H 20 at 198— and b y H N 0 2 in to 6-bromobenztriazole-5-carboxylic acid, m.p. ~325° 200°; M e3 ester, m.p. 68-5—69-5°), respectively. R. S. C. (decomp.). (II) is converted by Ac2 in boiling H20 into 7-bromo- 2 : 3-dimethyl-, m.p. 278° (decomp.), and by NaOAc and Bz2 in Rearrangement of phenyl allyl ethers. VII. Isomeric ethyl p-a- and -y-methylallyloxybenzoates. W. M. Lauer and P. A. Sanders boiling abs. EtOH into T-bromo-2 : 3-diphenyl-, m.p. 234-5°, -quin- (J. Amer. Chem. Soc., 1943, 65, 198—201 ; cf. A., 1940, II, 15).— oxaline-8-carboxylic acid. M.p are corr.. H. W. p -0 H -C 6H 4-C02Et (I) and CHMe:CH-CH2Cl in boiling NaOEt- Nitration oi /S-polyalkylphenylzsovaleric acids. II. jS-m-5-Xylyl- E tO H give Et p-AP-butenoxybenzoate (II), m.p. 51—51-5°, and Ziovaleric acid. L. I. Smith and L. J. Spillane (J. Amer. Chem. thence (KOH-MeOH) the derived acid, m.p. 176-5—178°, hydro Soc., 1943, 65, 282—289)..—The structure of 2 : 6 : 3 : 4 : 5 : 1- genated to p-OBu“-C6H 4-C 02H, also obtained from (I) by Bu“Br- (N 0 2)2C 6Me3-CMe2,CH 2,C02Me (A., 1940, II, 230) is confirmed by NaOEt-EtOH. Ozonolysis of (II) gives MeCHO (proof of structure). the behaviour of related compounds. Adding KN0 3-H 2S 0 4 to At 210—227°, (II) gives Et 4-hydroxy-3-a-methylallylbenzoate (III), 3:5: l-C 6H 3Me2-CMe2-CH2-C02Me (I) in CHC13-H 2S 0 4 at -15° to m.p. 76—78°, converted by boiling NaOMe—Me0H-Me2S 0 4 and 5° gives a small amount of M e fl-2 : 4-dinitro-m-5-xylylisovalerate (II), then hot 20% aq. NaOH into 4-methoxy-3-a-methylallylbenzoic m.p. 73-5—74°, and a larger amount of an oily nitrosulphonic acid. acid, m.p. 159—160°, which with 0 3 in EtBr gives CH20 (proof of 65% of (II) is obtained in CHC13 alone at <5—10°. Boiling Ac20 - structure). With KOH-MeOH, (III) gives the derived acid, m .p. H 2S 0 4 or HC1 at 100° does not affect (II). H 2- P t 0 2 reduces (II) in 113—114°, which by heating in quinoline and then treating with MeOH at 38 lb. to an amine, m.p. 86-5—90° (Ac derivative, m.p. CH 2B r-C 02Et-N a0H yields, after hydrolysis, 138-5—139-5°), of unknown structure. Dil. HN0 3-H 20 2-A c 0 H , 0-CH2:CH-CHMe-C6H 4-O-CH2-CO2H, m.p. 125° (lit. 120—120-5°). K M n04-AcOH, or NaOH-MeOH with (I) yields indefinite products. CH 2:CH-CHMeCl and (I) give similarly Et p-a-methylallyloxybenzoate H 2S 0 4 at room temp, hydrolyses (II) to th e acid, m .p. 153— 154-5° (IV) and (III), separated by way of the acids; p -a-methylallyloxy- [w ith H 2S 0 4-Me0H regenerates (II)], which with Cu chromite in benzoic acid, m.p. 155—156°, gives (IV) by way of the Ag salt and quinoline at 225—235° yields an oil and gives indefinite products w ith H 2-P d -C a C 0 3 yields p-sec.-butoxybenzoic acid, m.p. 119— 120°, (no HN02) with NaOMe-MeOH. With HN0 3 (d 1-5) and H 2S 0 4 also obtained from (I) by CHMeEtBr-NaOEt-EtOH etc. With at 3° room temp., (I) or (II) gives M e ¡3-2 : 4 : 6-trinitro-m-5-xylyl- 0 3 in E tB r, (IV) gives C H 20 . A t 222— 240° (IV) gives 3:4:1- iso valerate ( H I ) . m.p. 127—127-5°, converted by NaOH-aq. MeOH CHM e:CH-CH2-C6H 3(0 H )-C 0 2E t (V), m .p. (crude) 69— 75°, and a into a substance, m.p. 234—244° (decomp.), and by conc. H 2S 0 4 little (CH2:CH)2. Hydrolysis of (V) gives 4-hydroxy-3-AP-butenyl- into th e acid, m.p. 194— 198-5° (decomp.). With Cu chromite in benzoic acid (VI), m.p. 115—116°. Me2S 0 4-NaOMe-MeOH and quinoline-N 2 at 170— 175°, this acid gives 5 : 7-dinitro-4 : 4 : 6 : 8- then hot 25% KOH-MeOH convert (V) into 4-methoxy-3-AP-butenyl- tetramethyl-3 : 4-dihydrocoumarin (IV), m.p. 163-5— 164°, slowly sol. benzoic acid (VII), m.p. 150—151-5°, and (?) an impure isomeride. in 4N-NaOH, reduced by Zn-80% AcOH to a phenol and by H 2S - Ozonolysis of (VII) gives MeCHO and a little CH20 ; hydrogenation NH 3-aq. EtOH at 100° to impure 5-nitro-7-amino-4 : 4 : 6 : 8-tetra- gives 4-methoxy-3-n-butylbenzoic acid, m.p. 131-5— 132-5°. M e 2- methyl-3:4-dihydrocoumarin, softens 188°, m.p. 192— 197°. m -4- methoxy-5-carbomethoxyphenylacetate, m.p. 79—80°, is obtained from xylenol, CMe2:CH-CO,H (V), A1C13, and HC1 in light petroleum (VII) or 3 : 4 : l-CH 2:CH-CH2-C6H 3(0Me)-C02H by KMn0 4-C 0 M e 2 at <0° (later the b.p.) give 4:4:6: 8-tetramethyl-3 : 4-dihydro- at room temp, and estérification of the products by way of the Ag coumarin (45%), m.p. 104-5—105°, which with HNOa (d 1-5) in salts. (See A., 1943, II, 205.) R. S. C. H 2S 0 4 gives (IV) (proof of structure). H 2S-NH 3-aq. MeOH at 100° reduces (II) to Me ¡}-4-nitro-2-amino-m-5-xylylisovalerate, m .p. [Attempted] synthesis of aldehydes from acyl hydrazides. C. 91— 92° (Ac derivative, m.p. 138-5—139°), hydrolysed by boiling Niemann and J. T. Hays (J. Amer. Chem. Soc., 1943, 65, 482— 6n-HC1 to the acid, m.p. 176-5—179° (decomp.) (Ac derivative, 484).— Benzenesulphon-o-nitrobenzhydrazide (prep, from PhS02Cl and m.p. 187-5—180°, resists ring-closure). 2:6: l-C 6H 3Me2'N H A c 0-NO2-C6H 4-CO-NH-NH2 in C6H 5N at 10°), m.p. 184^-184-5°, with (VI), m.p. 179— 180° (lit. 177°), (V), HC1, and A1C13 in C2H 2C14 a t N a 2C 0 3 in (CH2-OH )2 at 160° gives no 0-NO2-C6H 4-CHO. Benzene- 5° give only an oil. BufiC02H with S0 2C12-B z 20 2 in boiling CC14 sulphon-p-nitrobenzhydrazide, m .p. 201— 202°, under these conditions and th en H 2S 0 4-Me0H gives Me p-chloroisovalerate (28%), b.p. gives p -N 0 2,C6H 1,C02H and PhSOaNa. R. S. C. 69—72°/17 mm., which with NaOH gives (V) but cannot be con Production of amidines.—See B., 1943, II, 172. densed with (VI). H N O j (d 1-5) in AcOH-Ac20 at <20° (later 50°) converts (I) into Me 4-nitro-m-5-xylylisovalerate (VII) (87%), b.p. Addition of dienes to di-o-methoxycinnamic acids. H. R. Adams 153—155°/5 mm., hydrolysed by alkali to the acid (VIII), m .p. and R. B. Carlin (J. Amer. Chem. Soc., 1943, 65, 360—363).— 134—136°, which is also obtained (m.p. 135—136°) by similarly 1:3: 5-C6H 3Me(OMe)2 with Li-Bu“Cl and then NPhMe-CHO-Et20 nitrating the corresponding acid. The structure of (VII) is proved at room temp, and later the b.p. gives 3 : 5 : 1 : 4-(OMe)2C6H 2Me-CHO, by reduction by Zn-80% AcOH to 4:4:6: 8-tetramethylhydro- m.p. 91—92° (lit. 90—91°), which with CH 2(C 0 2H)2-C 6H 5N - 'carbostyril, m.p. 150—151° [also obtained from (VIII)]. H N 0 3 piperidine at 100° gives 2 : 6-dimethoxy-4-methylcinnamic acid (98% ), (d 1-5). in H 2S 0 4 at 0° converts (VII) into ( ill) ; under other con m.p. 202° (decomp.), converted by (CH2!CMe)2 in xylene at 170° ditions some (II) can be isolated from mixed products. R. S. C. into 2' : 6'-dimethoxy-4 : 5 : 4'-trimethyl-1 : 2 : 3 : 6-tetrahydrodiphenyl- 2-carboxylic acid, m.p. 178—180°. 1 : 3 : 5-«-C5H l l >C6H 3(OMe)2 Polyalkylbenzenes. XXXII. Reaction between dimethylacrylic gives sim ilarly 2 : 6-dimethoxy-4-n-amyl-benzaldehyde, b.p. 148— acid and /w-xylene. L. I. Smith and L. J. Spillane (J. Amer. Chem. 152°/0-3 mm., and -cinnamic acid, m.p. 179° (decomp.), which with Soc., 1943, 65, 202—208; cf. A., 1941, II, 6).—zn-Xylene, isoprene in xylene at 185° gives 2' : 6'-dimethoxy-5-methyl-4'-n-amyl- CMe2lC H -C 02H, and A1C13 a t —8° to room temp, give jS-m-5-xylyl- 1:2:3: 6-tetrahydrodiphenyl-2-carboxylic acid (I), m.p. 115— 115-5° isovaleric acid (I) (97%), m.p. Ill—112° [Me ester (II), b.p. 134-— (or, in one experiment, an isomeride, m.p. 133—134°). The M e ester, 137°/11 mm.], cyclised in H 2S 0 4 at room temp, to 3 : 3 : 5 : 7-tetra- b.p. 170°/0-l mm., thereof with S at 240—250° followed by hydro methylhydrindone (III), m.p. 57-5—58° (oxime, m.p. 154-5— 155°), lysis gives 2' : 6'-dimethoxy-5-methyl-4'-n-amyldiphenyl-2-carboxylic which is probably the same as the hydrindone, m.p. 62—63°, of acid, m.p. 146°, converted by 48% HBr-AcOH-Ac20 into the known Sm ith et al. (A., 1940, II, 224). »w-Xylene, CMe2lCH-COCl, and 3'-hydroxy-4"-methyl-5'-w-amyldibenz-2-pyrone, whence follows the A1C13 in CS2 at 0—35° give 4-fi-methylcrotonyl-m-xylene (61%), b.p. orientation of (I). M.p. are corr. R. S. C. 137— 139°/15 mm., converted by 0 3 in AcOH or KMn0 4 in COMe2 into 2:4: l-C eH 3Me2-C 02H and by treatin g w ith HC1-A1C13 (excess)- Symmetrical diaryls from diazotised amines. Reducing agents. CS2 and evaporating (not other conditions) into (III) (48%) and II. E. R. Atkinson, D. Holm-Hansen, A. D. Nevers, and S. A. tar. This proves the structure of (III) and probably also of (I). M arino (J. Amer. Chem. Soc., 1943, 65, 476—477; cf. A., 1941, II, 2 • 4 : l-C.HAle^COMe and MgMeBr in boiling EtaO give /¡-m-4- 170).— 0-CO2H,C6H4,N2Cl with activated Cu powder (I) in H20 at 195 A., II.—in, HOMOCYCLIC. 196 5— 10° gives o-C6H 4C1-C02H (II) (54%) and diphenic acid (III) stable to Br-CHC13. Cold, conc. H 2S 0 4 hydrolyses (IV) to the (32%), with (I) in dil. aq. NH 3 gives (III) (67—71%) and enolic form (V), m.p. 147°, of (II) [which also yields (IV) and (III)]; NH(C 6H 4-C 02H-o)2 (10%), in warm 23n-HC02H gives in boiling EtOH, (V) yields (II) and it reacts with H 20 2 as does (II). 0-OH-C6H 4-CO2H (IV) (<70%), with (I) in HCOaH gives BzOH Dissolving (II) in H 2S 0 4 and pouring the solution on to ice gives (40% ), (III) (10%), and tar, in warm EtOH gives (IV) (50— 75%) (V). In E t 20 , (V) and Br yield an oily compound, C18H 160 2B r2, and a little MeCHO, and with (I) in EtOH at 0° gives BzOH (50%), which with KI-COMe2 gives I and (II). R. S. C. (II) (a little), and (o-C02H-C6H 4-N:)2 (very little). R. S. C. Synthesis of 2-ketocyc/ohexylsuccinic acid and related substances. Tetracyanodimethylcycfopropane. L. Ramberg and S. Wideqvist II. Syntheses involving cyc/ohexanone. E. H . C harlesw orth, J. A. (Arkiv Kemi, Min. Geol., 1941, 14, B, No. 37, 13 pp.).— CH Br(CN )2 McRae, and H. M. MacFarlane (Canad.J. Res., 1943, 21, B, 55— 64).— and aq. COMe2-K I afford 1:1:2: 2-tetracyano-3 : 3-dimethy¡cyclo Et cycfohexanone-2-carboxylate (I) is converted by the successive propane (I), m.p. 209-5—210° (corr.). It is converted by boiling actions of Na and CH 2Br-C02Et in boiling C„H6 into the 2-carb- n-KOH into X-carboxy-2-carbamyl-3 : 3-dimethylcycXopropane-X : 2- oxylate-2-acetate, b.p. 195—210°/45 mm., (hydrolysed and decarb- dicarboxylimide (II), m.p. 197° (decomp.), also obtained by the oxylated by boiling conc. HC1 to 2-ketocyc/ohexylacetic acid, m.p. action of alkali on 1 : 2-dicyano-3 : 3-dimethylcyc/opropane-l : 2-di- 75—78° (phenylhydrazone, m.p. 162—163°). (I), CHMeBr-C02Et, carboxyhmide (III), m.p. 242°, prepared from aa'-dicyano-/3)3-di- and NaOEt in boiling EtOH afford Et a-2-keto- X-carbethoxycyclo- methylglutarimide and its aa'-Br2-derivative in boiling 40% AcOH. hexy¡propionate, b.p. 180— 190°/17 mm., whence (boiling conc. HC1) (II) is probably transformed by NaNOa in 25% H 2S 0 4 into the a-2-ketocyciohexylpropionic acid. Similar condensation of (I) with corresponding dicarboxylic acid. (I) is converted by KOH and CH 2Ph-CHBr-C02Et leads to CH 2Ph-CH(0H)-C02Et, converted by conc. N H 3 in a sealed tube at 115° into a compound, m.p. 165°, conc. HC1 into CHPhlCH-C02H. Attempts to condense (I) with which could not be obtained quite pure but is very probably C H B r(C 02E t )2 and Na in C6H 6 lead to [CH(C02E t )2]2 whereas with caronic acid. Conc. HC1 converts (I) or (HI) into a compound, NaOEt in EtOH the product appears to be [lC(C02E t2]2, m .p. 54— m.p. 265°, probably CM e, 2-methylbenzophenone, m.p. 84°, which with NaN0 2-5N-HCl gives naphthaquinone (juglone) (I) occurs in position 1. 5-Hydroxy-l: 4“ l-methylfluoren-9-one (II) (49%), m.p. 98° (identified by oxidation naphthaquinone-l-oxime, decomp. 203° [lit. m.p. 187° (decomp.)], b y K M n 0 4 to th e 1-carboxylic acid), and a little 2' -hydroxy-2- is reduced and therr benzoylated to 4:1: 8-N H Bz-C10H 5(OBz)2, methylbenzophenone, m.p. 65—67°. Boiling 47% HI and red P m.p. 247°, prepared for comparison from 4-benzeneazo-l : 8-di- reduce (II) slowly to \-methylfluorene, m.p. 87°. w-C6H 4Me-MgBr hydroxynaphthalene. 4-Benzamido-, m.p. 233°, and 2-benzamido-, gives an oil, hydrolysed to 2'-amino-3-methylbenzophenone (10% m .p. 213°, -1 : 5-dibenzoyloxynaphthalene are described. (I) is over-all), m.p. 57°, which yields a trace of 2-methylfl.uorenone. obtained by oxidation of 1 : 5 : 4-(OH)2C10H 5-NH2. M.p. are corr. Adding l-C 10H,*MgBr to (I) gives o-NHAc-CeHi a-C10H , ketone (III) H. W. (47%), m.p. 125°; the reverse addition gives less (III) and some Naphthazarin. H. E. Fierz-David and W. Stockar [Helv. Chim. o-acetamido-, m.p. 209—211°, hydrolysed to o-amino-phenyldi-a- Acta, 1943, 26, 92—98).—Naphthazarin (I) is obtained in 59% naphthylcarbinol, m.p. 206° (decomp.). (Ill) yields, as above, yield by the addition of a solution of S (7 g.) in 66% oleum (120 g.) 0-NH2,C6H 4,CO,C10H 7-a, 1 : 2-benzfluoren-9-one, and chrysofluorene. to 1 : 5-C10H 6(NO2)2 in H 2S 0 4,H20 (400 g.j at >40° and is purified Adding 2 : l-C 10H 6Me-MgBr to (I) gives o-acetamido- (34%), m.p. by sublimation at 170—180°/vac. Addition of H 3B 0 3 does n o t 132°, and thence o-NH imCeH i 2-methyl-l-naphthyl ketone, m.p. 114°, improve the yield. Reduction of 1:5- or 1 : 8-C10H 3(NO2)2 by and 6-methyl-7-benzanthrone. 2-C10H,-MgBr leads to an oil, which NH2Ph in conc. H 2S 0 4 gives (I) in only 22% or 11-5% yield respec yields o-NH^C^Hi p-C10H y ketone (8-3%), m.p. 106°, and thence tively. (I) condenses with NH2Ar usually at room temp, to 2-aryl- traces of 3 : 4-benzfluorenone. CH 2Ph-MgCl and 1:3: 4-C6H 3Me2-MgI amino-5 : 8-dihydroxy-l : 4-naphthaquinones; products are described with (I) give only oils. Adding MgPhBr to 2-methyl-4 : 5-2' : 3'- from N H 2Ph, o-N H 2-C6H 4-OMe, o- and m-toluidine, m- and naphth-1 : 3-oxaz-6-one (IV) gives P h 2-acetam ido (39%-), m .p. p-xylidine, and m- and o-C6H 4CPNH2. £-OEt-C 6H 4-N H 2, a- and 141— 145°, and thence Ph 2-amino-3-naphthyl ketone (V), m.p. 114°; )3-C10H 7-N H 2, m- and ^-OMe-C6H 4-NH 2 also condense. 2-Anil- some diphenyl-2-acetamido-3-naphthylcarbinol, m.p. 226° (decomp.), ino-5 : 8-dihydroxy-l : 4-naphthaquinone is sulphonated to a marine- is also formed. Ring-closure of (V) as above yields 2 : 3-benzfluoren- blue dye. A second arylamino-residue is introduced if (I) is heated one (13%) and a little Ph 2-hydroxy-3-naphthyl ketone, m .p. 156°. for some time with an excess of base but the products are sol. with CHaPh-MgCl and (IV) give only a "small yield of ay-diphenyl-fl-2- great difficulty. H. W. acetamido-3-naphthylpropan-fl-ol, m .p. 181 °. 2-C10H--MgBr and (IV) Oximation of 2-hydroxy- and 2-anilino-l : 4-naphthaquinone. H. give f}-C10H 7 2-acetamido-, m.p. 169°, and thence 2-amino-3-naphthyl Goldstein and P. Grandjean [Helv. Chim. Acta, 1943, 26, 468-— ketone (4% over-all), m.p. 154— 156°, which by diazotisation etc. 475).—Oximation of 2-hydroxy-l : 4-naphthaquinone in acid or yields 2:3:5: 6-dibenzfluoren-9-one, m.p. 185° (resists reduction), alkaline medium gives 2-hydroxy-l : 4'-naphthaquinone-l-oxime (I), and a little B-C10H 7 2-hydroxy-3-naphthyl ketone, m.p. 139°. m.p. ~195° (decomp.) (lit. decomp 180°). It is reduced to 1 : 2 : 4- R. S. C. NH 2-C10H 5(OH)2 [Ac3 derivative (II), m.p. 155-5°]. 1 : 3-C10H 6(OH )2 Polynitro-compounds of fluorene. F . E. R ay an d W . C. F rancis is converted by CH 2Bu£-0-NO in EtOH-KOH at 0° into 4:1:3- (/. Org. Chem., 1943, 8, 52—59).—2 : 2'-Dinitrodiphenyl-6-carboxylic NO-C10H 6(OH )2 identical with (I) and yielding (II) when reduced acid is converted by conc. H 2S 0 4 at 190° ±5° into 4 : 5-dinitrofluoren- and acetylated, thus proving the structure of (I). 2-Methoxy-l : 4- one (I), m.p. 273-5°. The substance, m.p. 243° [oxime, m.p. 265°; naphthaquinone can be obtained directly by heating 1 : 2- phenylhydrazone, new m.p. 252—253° (decomp.)], thus described NO-Ci0H6-OH with MeOH-conc. H 2S04. 2-Anilino-l : 4-naphtha- by Schmidt et al. (A., 1906, i, 27), is the 2 : 5-(N0 2)2-compound; it quinone does not react with NH2OH in acid solution but in alkaline 6 is formed with 4 : '-dinitrodiphenic acid, new m.p 306—307°, by medium affords the 1 -oxime (HI), m.p. 222° (decomp.). This is 4 the oxidation of 2 : 5-dinitrophenanthraquinone by KMn0 in the reduced to 3 : 4 : l-NHPh-C 10H 5(NH 2)-OH, the ON-Pz2 derivative, presence of alkali. 2:4: 7-Trinitrofluorenone (II), m.p. 175-5°, is m.p. 235°, of which with boiling AcOH gives 5-benzoyloxy-2 : 3- obtained by nitration of 2 : 5- and 2 : 7-dinitrofluorenone (cf. Bell, diphenyl-a-naphthiminazole (IV), m.p. 181°, thus establishing the A., 1928, 1010); the compound is identical with the “2:6:7- (or vicinal position of NHPh and IN-OH in (III). (IV) is converted by 2:3: 7-)trinitrofluorenone’’ of Schmidt et al. [loc. cit.). It is very successive treatments with KOH-EtOH and Me2S 0 4 in to 5-methoxy- resistant to oxidation by acid KMn04. 2:4:5: 7-Tetranitro- 2 : 3-diphenyl-a-naphthiminazole (V), m.p. 162°. 1: 4-OMe-C10H 6-N2Ph fluorenone, m.p. 252—253°, is obtained from (I) or (II) and a m ix is converted by the successive action of SnCl2 and aq. HC1 into ture of boiling fuming HN 0 3 (d 1-59— 1-60) and conc. H 2S 0 4. H . W . A-amino-3-anilino-l-methoxynaphthalene, m.p. 182° (decomp.); the B z derivative, m.p. 195°, of this is converted into (V) by boiling glacial 1:2:5: 6-Dibenzfluorenone.—See B., 1943, II, 174. AcOH, thus confirming the structure of (IV). M.p. are corr. Preparation of derivatives of chrysene by the Robinson -Mannich H . W . base synthesis of unsaturated ketones. A. L. Wilds and C. H. 2-Methyl-3-phytyl-l : 4-naphthaquinone.—See B., 1943, III, 136. S hunk ( /. Amer. Chem. Soc., 1943, 65, 469—475).—The hygroscopic methiodide from pure NEt2-[CH2]2-COMe (I) (modified prep, from Celastrol. IV. O. Gisvold (/. Amer. Pharm. Assoc., 1942, 31, paraformaldehyde, COMe2, and NHEt2,HCl in EtOH) with Me 529—532; cf. A., 1941, II, 18).—Celastrol (I) with AcOH-Os is 1-keto-l : 2 : 3 : 4-tetrahydrophenanthrene-2-carboxylate (II) and degraded to a CO-acid, m.p. 166—167°, [o] +22-1° in EtOH (2 : 4- NaOMe (1 mol.) in MeOH-C 6H 6 gives 92% of Me l-keto-2-y-keto- dinitrophenylhydrazone, C25H 32 0 7N4, m.p. 192°). Acetylation (Thiele) n-butyl-1 : 2 : 3 : i-tetrahydrophenanthrene-2-carboxylate (III), m .p. of (I) and methylcelastrol gives colourless, abnormal triacetates, 145.—145-5°; owing to its content of h-diethylamino-y-diethylamino- C28H 380 7, m.p. 100— 101°, and C29H 40O7, respectively. (I) is reduced methylbutan-fi-one (IV), b.p. 92—92-5°/0-4 mm. (prep, described), (Pt-H2) to dihydrocelastrol, m.p. 177°, which readily oxidises to crude (I) gives much lower yields of (III). The dimethiodide of (I)- (I) is 8-hydroxy-3-methyl-4-homohydrogeranyl- (or -hydroger- (IV) w ith (II) gives Me l-keto-2-y-keto-p-methylene-n-butyl-l : 2 : 3 : 4- anyl-)l : 2-naphthaquinone. F. O. H. tetrahydrophenanthrene-2-carboxylate (V) (72%), m.p. 157-5— 158-5°. In boiling KOH-MeOH-N 2 or conc. HCl-AcOH-N2, (III) gives 5-keto-l : 2 : 2a : 3 : 4 : 5-hexahydrochrysene (VI) (90 or 84%), m.p. IV.— STEROLS AND STEROID SAPOGENINS. 188— 188-5° [oxime, sinters 218°, m.p. 220— 222° (decomp.)] [and a Sensitive colour reaction for steroids. M. C. N a th [Ann. Biochem. trace of an acid, m.p. 232—234° (gas)], but in boiling NaOMe- E xp. M ed., 1942, 2, 83—86).—When conc. H 2S 0 4 is poured down M eOH -N2 gives Me 5-keto-l : 2 : 2a : 3 : 4 : 5-hexahydrochrysene-2a- the side of a test-tube containing a solution of a steroid in glacial carboxylate (79%), m.p. 178-5—179-5°, which is indifferent to hot AcOH containing a drop of 1% Hg(OAc)2 in glacial AcOH, a brown, HCl-AcOH but in KOH-MeOH yields (VI). P d -C -N 2 dehydro- red, or violet ring develops at the junction of the two layers with genates (VI) at 280—300° to chrysene (78%) and 5-hydroxychrysene a blue or green ring above it. Variations observed with different (18%), m.p. 271—273° (acetate, m.p. 201—202°; M e ether, m .p. concns. of the reagents are described. P. C. W. 147-5—148-5°; no FeCl3 colour), the latter being the main product (83% + a trace of a neutral substance, m.p. 135—155°) obtained Colour reaction of steroids in relation to their structures. M. C. by Pd-C in xylene-N2. When treated with MgMeI-Et20 - C 6H 6 Nath and M. K. Chakraborty [Ann. Biochem. Exp. Med., 1942, 2, and then aq. NH 4C1 and finally Pd-C at 300-320°, (VI) gives 73—82).—An attempt is made to correlate the location of double 5-methylchrysene (76%). In conc. HC1-AcOH-N2, (V) gives 5-acet- linkings in steroids with the colours developed by particular reagents. oxy- (VII) (76—83%), m.p. 167—168°, and thence (conc. HC1- It is suggested that a A4: 5 linking (actual or potential) is responsible E tO H -N 2) 5-hydroxy-i-methyl-1 : 2-dihydroclirysene (VIII), m.p. for the development of red or carmine and a A7 : 8 linking for the 159—160°; KOH-MeOH yields >43%. With Pd-G-N 2 a t 200— blue colour in Rosenheim’s, Kohlenberg’s, and Rosenheim and. 250° and then boiling Ac20 , (VII) gives 5-acetoxy-, di- (? tri-)morphic, Callow’s reactions. The relation between structure and the absorp m.p. 185— 187°, and thence 5-hydroxy-i-methylchrysene, m.p. 287— tion bands found during the colour development is discussed. 288° (vac.). H 2-Pd-C in dioxan converts (V) into mixed M e P . C. W . l-keto-2-y-keto-p-methyl-n-butyl-l : 2 : 3 : A-tetrahydrophenanthrene-2- Preparation of cholesteryl p-aminobenzoate. D. KritcheVsky [J. carboxylates, form, m.p. 123-5— 124-5°, and thence (KOH-MeOH) Amer. Chem. Soc., 1943, 65, 480).—Cholesteryl p-nitrobenzoate m ixed 5-keto-A-methyl-l : 2 : 2a : 3 : 4 : 5-hexahydrochrysenes (IX), m.p. 190-5— 191-5°, [a]f? -6-97° in CHC1S, with Fe filings in boiling form , m.p. 189— 189-5° [oxime, m.p. ~252—254° (decomp.)], which is AcOH gives the p-aminobenzoate, m.p. 237-8—238-8°, [a]?? +3-68“ dehydrogenated as above to (VIII) and with Zn-Hg-HCl and then in CHC13, hydrolysed by hot NaOH-EtOH. R. s. C. Pd-C yields 4-methylchrysene, m.p. 229-5—230°. R. S. C. Scymnol. W. Bergmann and W. T. Pace [J. Amer. Chem. Soc. Oximation of juglone. H. Goldstein and P. Grandjean (Helv. 1943, 65, 477—478).—Location of OH at C(3) (cf. Ashikari, A. Chim. Acta, 1943, 26, 181— 1£5).—Oximation of 5-hydroxy-1 : 4- 1939, III, 692) is confirmed. Scymnol tetra-acetate, m.p. 145-5__ A., II.— iv , STEROLS AND STEROID SAPOGENINS. 200 147°, with CrOj-AcOH at 90° gives (after hydrolysis) cholic and converted by KOH-MeOH into 17a (a)-hydroxy-17a-methyl-A4-H- th en 3:7: 12-triketocholanic acid (I). Tschesche’s products (A., homoandrostene-3 : 17-dione with (predominatingly) non-investig- 1932, 268) were impure. Scymnoltriketo-acid (Windaus, A., 1930, ated acidic products. 17-Acetylenylandrostane-3(j3) : 17(a)-diol yields 1039) w ith conc. HC1—AcOH gives th e chlorohydrin, C27H 39O eCl, 3(/S) : 17(a)-dihydroxyaZiopregnan-20-one, m.p. 208— 210°, [a]n — 22-9° m.p. 225—227°, which with CrOa-AcOH at 80° yields (I). ±2° in dioxan [3-monoacetate, m.p. 139—142° (lit. 190—192°)]. R . S. C. M.p. are corr. H. W. Oxidative degradation of i-stigmasteryl methyl ether. B. Riegel, Constituents of the adrenal cortex and related substances. LIX. E. W. Meyer, and J. Beiswanger (J. Amer. Chem. Soc., 1943, 65, A4-Pregnen-21-ol-3 :12 :20-trione and -12(j8): 21-diol-3 ; 20-dione. 325—328).—Formation of ¿-ethers is used to protect the OH at H. G. Fuchs and T. Reichstein (Helv. Chim. Acta, 1943, 26, 511—- C(3) of sterols. ¿-Stigmasteryl Me ether (from stigmasterol in 77% 530).—Diacetylaetiodeoxycholic acid is converted by successive yield) wih 0 3 in CHC13 at 0° and then H 2Oa gives 6-methoxy-i-bis- treatment with SOCl2 and CH 2N 2 into non-cryst. 21-diazopregnane- norcholenic acid (I), + H 20 and anhyd., m.p. 174-8—176-3°, [a]f? 3(a) : 12(/3)-diol-20-one diacetate (I), hydrolysed by KOH-MeOH at + 17° in CHC13, which gives gums when rearranged. Me 3-p-tolu- room temp, to the corresponding diol (II). In Ac-OH at 100° (II) enesulphonyloxy-AA-bisnorcholenate (II), m.p. 133—134°, and KOAc passes into pregnane-3(d): 12Q3): 21-triol-20-one 21-monoacetate (III), in boiling MeOH give Me 6-methoxy-i-bisnorcholenate (III) (98%), m.p. 149-5—150-5°, [a]^8 +139-7°±4° in COMe2 (also + 1 H 20), m.p. 72-0— 72-8°, [a]fj +37-3° in CHC13, converted by KOH-MeOH which with Ac20 and C6H3N at 90° gives the triacetate (IV), m.p. into (I) having m.p. 168—171° and [a]f,3 +33° in CHC13. With a 114—115°. (I) is hydrolysed by K 2C 0 3-K H C 0 3 in aq. MeOH at little H 2S 0 4 in boiling MeOH, (III) gives Me 3-methoxy-A6-bisnor- room temp, into 21-diazopregnane-3(a) : 12(/!)-diol-20-one 12-mono- cholenate (IV), m.p. 117— 118°, [a]£f —63-3° in CHC13, which is also acetate, which in anhyd. AcOH at 105° passes into pregnane- obtained by boiling (II) in MeOH and by rearranging the crude 3(a): 12(/S): 21-triol-20-one 1 2 : 2 1 -diacetate (V), tw o forms, m.p. Me ester from either “ form ” of (I). Boiling KOH-MeOH hydro ~72—95° and 156—158°, [a]j>9 +150-7°±2° in COMe2, with some lyses (IV) to th e acid, m.p. 199—202°, [a]f>B -77-8° in CHC13. W ith (III)- (V) is acetylated to (IV). Excess of Cr0 3 oxidises (III) to boiling Zn(0Ac)2-A c 20 -A c 0 H , (III) gives Me 3-acetoxy-A 5-bisnor- pregnan-21-ol-3 : 12 : 20-trione acetate (VI), m.p. 189—191°, [a]],7 cholenate. M.p. are corr. R. S. C. + 153-0° + 3° in COMe2, whereas 1 equiv. of 0rO 3 affords a mixture Preparation of deoxycholic acid from cholic acid. G. A. D. from which (?) pregnane-3(a) : 21-diol-12 : 20-dione 21-monoacetate, Haslewood (Biochem. J., 1943, 37, 109—112)..—A more detailed m.p. 149—151°, [a]},9 +157-6°±3° in COMe2, is isolated; it is account of work previously abstracted (A., 1942, II, 365). 3 : 12-ZE- further oxidised to (VI). In boiling C6H 6-COMe2, (III) and Al(OPh)s hydroxy-7 -ketocholanic acid, m.p. ~83°, and its E t ester, m.p. 160— yield pregnane-12(¡3) : 2l-diol-3 : 20-dione 21-monoacetate (VII), m.p. 161°, are new. R. L. E. 190— 192°, [a]],4 +146-3°±3° in COMe2; this is oxidised by Cr0 3 Preparation of deoxycholic acid from cholic acid. A. W. Schneider in AcOH at room temp, to (VI). (V) is oxidised by Cr0 3 to pregnane- an d W . M. H oehn (J. Amer. Chem. Soc., 1943, 65, 485).—Oxidation 12(/3) : 2l-diol-3 : 20-dione diacetate (VIII), m.p. 120— 122°, [a]j> of cholic acid or its Me ester by Cr0 3 in AcOH or AcOH-C 6H 6 and + 142-4°+ 4° in CHC13, also obtained from (VII) and Ac20 in C6H 6N heating (170—200°) the semicarbazones or hydrazones of the pro at 20° and then 90°. Bromination followed by treatment with ducts with KOH- or NaOH-MeOH gives deoxycholic acid, [a]“ boiling C6H6N converts (VI), (VII), and (VIII) into A*-pregnen- + 57°+ 1° in MeOH, which is similarly obtained from Me 7 : 12-di- 21-ol-Z : 12 : 20-trione acetate, m .p. 182— 184°, [a]j)4 +228-6°+3° in hydroxy-3-benzoyloxycholanate when the sol. (MeOH) semicarb- COMe2, A,-pregttene-12(P) : 21-diol-3 : 20-dione 21-monoacetate (IX), azone of the oxidation product is used. R. S. C. m .p. 182— 184°, [a]!)1 +203-7° + 2°, [a]|J6I +251-6°±2° in COMe9, and Ai-pregnene-12(P) : 21-diol-3 : 20-dione diacetate (X), m .p. 158— Constitution of cafestol. A. Wettstein and K. Miescher [Helv. 159°, [a]jj +197-7°±5° in COMe2, respectively. These show the ultra Chim. Acta, 1943, 26, 631—641 ; see also A., 1943, II, 203).— violet absorption spectrum characteristic of ay8-unsaturated ketones. Z-Dehydroandrosterone with piperonal and w-N0 2-C6H 4-CH0 in an Acidic or cautious alkaline hydrolysis converts them respectively alkaline medium gives 16-piperonylidene-, m.p. 242—243°, and in to A ^ p re g n e n ^ l-o lS : 12 : 20-trione, m.p. 180—183°, [a]f>3 +238-9° 16-m-nitrobenzylidene-A5-androsten-3t-ol-17-one, m.p. 248-5—250°, ± 3 °, [a]3461 +298°±3° in dioxan, [a]£3 +215-1°±2°, [a]62361 +265-8° respectively. 16-m-Nitrobenzylidene-androsterone, m.p. 189—190°, +2° in COMe2, PA-pregnene-12 (/?) : 21-diol-3 : 20-dione, m.p. 98—124° and -ceslrone M e ether, m.p. 187—188°, are similarly prepared. (decomp.), [a]!,1 +186-1°±2°, [a]£ 61 + 221-1° ± 2° in dioxan, and M.p. are corr. H. W. its 12-monoacetate, m.p. 188— 192°, [a]j,9 +185-3°±2°, [a]J461 +226-3° Saccharides of deoxycorticosterone.—See A., 1943, II, 156. + 3° in COMe2. Preliminary experiments appear to show that (IX) and (X) are at any rate less potent than corticosterone in the Alengol.—See A., 1943, II, 211. Everse-de Fremery test and that (X) is inactive in 4-mg. doses in Steroids. VII. Compounds related to 6-methyl-ll-deoxycortico- the anti-insulin test. M.p. are corr. (block); limit of error ±2°. sterone. M. Ehrenstein (J. Org. Chem., 1943, 8, 83— 94).-—A6-Preg- H . W. nene-3(j3) : 21-diol-20-one 21-acetate is converted by Al(OIJrf )3 in Steroids and sex hormones. LXXXIII. .4-Homocholestanone and boiling PrfOH followed by hydrolysis and treatment with COMe2 A-homodihydrotestosterone. M. W. Goldberg and H. Kirchen- and anhyd. 0uSO 4 into A5-pregnene-3(/3) : 20 : 21-triol 20 : 21-CMe2l steiner (Helv. Chim. Acta, 1943, 26, 288—301).—The methods used ether, m.p. 175°, [a]j,9'5 —46-5° in COMe2, which is hydrolysed by for the enlargement of ring d have been extended to that of ring a . EtOH-aq. AcOH to A5-pregnene-3(/3) : 20 : 21-triol, m.p. 222—229°, Catalytic reduction (Pt0 2 in AcOH at room temp.) of cycZohexanone [a]p —54-0° in MeOH. This with Bz02H in CHC13 gives 5 : 6-oxido- cyanohydrin gives 1-aminomethykycZohexanol (I) (hydrochloride, m.p. pregnane-3(fl) : 20 : 21-triol (I), m.p. 221—-223°, [a]f>° —63-5° in 210—212°; N -Bz derivative, m.p. 142—143°) and di-l-hydroxy- COMe2. (I) is converted by MgMeBr in Et 20-PhOMe ultimately hexahydrobenzylamine (hydrochloride, m.p. 250—252°; N-jVO-com- at 130° into 6-methylpregnane-3(f}) : 5 : 20 : 21 -tetraol, m .p. 229—-230° pound, m.p. 133—134°); the yield of (I) is greatly increased if HC1 (decomp.), [a]^ '5 —24-0° in MeOH, partly acetylated by Ac20 in is added to the reaction mixture. Similar hydrogenation of cyclo- cold C6H6N to the 21 -monoacetate (II), m.p. 177-5— 180°, [a]j> hexanone cyanohydrin acetate leads to dihexahydrobenzylamine, + 15-0° in MeOH, w ith some 3 : 21 -diacetate (III), m.p. 185— 187°. isolated as the ArO-derivative, m.p. 100— 101°. Cholestanone cyano (II) is oxidised by 0rO 3 in AcOH to 6-methylpregnane-5 : 20 : 21- hydrin is hydrogenated (Pt0 2 in AcOH at room temp.) to 3-hydroxy- triol-3-one 20 : 21-diacetate, m.p. 205—210°, converted by HC1 in 3-aminomethylcholestane, m.p. 194—197° [hydrochloride; N-Ac (ii), CHC13 into resinous Q-methyl-CA-pregnene-20 : 21-diol-3-one diacetate. m.p. 227—228°, and A c2, m.p. 176— 178°, derivatives], transformed (HI) is oxidised by Cr0 3 in AcOH to the non-cryst. 6-m ethyl- by HNOa into A-homocholestanone, m.p. 85—87°, [a]n +50° in pregnane-3(j3) : 5 : 21-triol-20-one 3 : 21-diacetate. H. W. CHC13 (semicarbazone, m.p. 239—242°; oxime, m.p. 197— 199“). Steroids and sex hormones. LXXXIV. 17(a)-Hydroxy-20-keto- Hydrogenation of cholestanone cyanohydrin acetate, m.p. 123— 126°, compounds of the pregnene and a//opregnane series. M. W. Gold yields (II), Ac wandering from O to N. 17-Acetoxydihydrotesto- berg, R. Aeschbacher, and E. Hardegger [Helv. Chim. Acta, 1943, sterone gives a very unstable cyanohydrin, m.p. 175—187° (charac 26, 680—686; cf. Stavely, A., 1942, II, 147).— 17-Acetylenyl-A5- terised as the 3 : 17-diacetate, m.p. 198—200°), hydrogenated to androstene-3(j8) : 17(a)-diol is converted by (£-C6H 4M e-S02-N H )2Hg Yl-acetoxy-3-aminomethylandrostan-3-ol hydrochloride, m.p. 295— 297° in boiling 96% EtOH with subsequent treatment of the product (decomp.) [Yl-acetoxy-3-acetamidomethylandrostan-3-ol has m.p. 224— with H 2S and then 2n-KOH into A5-pregnene-3(/?) : 17(a)-diol-20-one 226°], converted by HNOa and subsequent hydrolysis (N-MeOH- , (I), hexagonal leaflets or long needles, m.p. 190— 191°, [a]n —83-6°±3° KOH) into A-homodihydrotestosterone (III), m .p. 197—-199°, [a]o and —87-9°+ 3° in dioxan, respectively [oxime, m.p. ~255—260°; + 108-5° in CHC13 [oxime, m.p. 225—227°; acetate, m.p. 146— 148° 3-monoacetate, m.p. 186—188°, and its oxime, m.p. 235—240° (semicarbazone, m.p. 239—241°)]; (III) is devoid of pharmacological (decomp.)]. 17-Acetylenyl-As-androstene-3(j8) : 17(a)-diol diacetate activity. Cholestanone is converted by NaOEt and ¿soamyl formate is transformed similarly into the diacetate, m.p. 194—195°, [a]n in E t20 at room temp, into the OH'CH'. com pound, m .p. 176— 178°, — 54-4° + 3° in dioxan, of (I), also obtained by protracted treatment and by PhCHO in EtOH containing a little aq. NaOH into two of (I) with Ac20 - C 6H 5N at 105°. (I) is apparently transformed by CHPh'. derivatives, m.p. 145— 146° and 126— 128°, and a OII-CH Ph- Al(OBuy)3 in C6H 6-COM e2 into (mainly) 3(j3): 17a(j3)-dihydroxy- compound, m.p. 184— 186°. Benzylidene- and bromo-, m.p. 113— 17a-methyl-A6-D-homoandrosten-17-one, m.p. 176— 178°. 17-Acetyl- 115°, -A-homocholestanone are described. Androstanedione dicyano- enyltestosterone is converted [as for (I)] into AP-pregnen- 17(a)-ol- hydrin diacetate has m.p. 171—172°. M.p. are corr. H. W. 3 : 20-dione, m.p. 192—193°, [a]q +64-4°±3° in dioxan, almost Constituents of the adrenal cortex and related compounds. LVII. quantitatively isomerised by activated A120 3 to 17a(/3)-hydroxy- 17-Hydroxy-20-ketosteroids and the mechanism of their rearrange 17a-methyl-A4--D-homoandrostene-3 : 17-dione, m.p. 181— 184°, and ment into polyhydrochrysene derivatives. C. W. Shoppee and D. A. 2 0 1 A., II.—v, TERPENES AND TRITERPENOID SAPOGENINS. 2 0 2 P rin s (Helv. Chim. Acta, 1943, 26, 185—200).—It is deduced from -D-homoandrostan-7-one, m.p. 232—235° (change at 228°), ' [a]n theoretical considerations that the hydration of acetylenylandro- 0°±4° in COMe2. M.p. are corr. (block); limit of error ±2°. stane derivatives is most likely to occur without ring enlargement H . W. if OH at C(l7) is etherified or esteriiied, if an amine instead of H zO 0-Sapogenin compounds.— See B., 1943, III, 135. is added at the triple linking and if the experiment is performed in neutral solution. Thus 3(0) : 17(a)-diacetoxy-17-acetylenylandro- stane is converted by aq. HgCl2 and NH2Ph in C6H 6 at 60—62° V.— TERPENES AND TRITERPENOID SAPOGENINS. (cf. Stavely, A., 1940, II, 180; 1942, II, 147) into 3(/S) : 17(a)-di- acetoxyal/opregnan-20-one (I), m.p. 227—229°, [a]*,0 +2-5°±2° in Inversion of menthone with trichloroacetic acid in aprotic solvents. COMe2 (cf. R uzicka et al., A., 1939, II, 327), converted by boiling A. Weissberger (/. Amer. Chem. Soc., 1943, 65, 102— 110).—The 4% KOH-MeOH into 3(0) : 17(a)-dihydroxy-17a-methyl-H-homo- equilibrium, I- (I) ^ ¿-¿so-menthone, in presence of CC13-C02H (II) androstan-17-one (II), m.p. 295—300° (3-acetate, m.p. 243—244°). in C6H 6, C6H 14i and CHC13 at 20° is investigated polarimetrically (I) is converted by N 2H 4,H 20-Na0Et-Et0H at 180° into 3(0)- and cryoscopically. The catalytic activity per mol. of acid is a hydroxy-l’lu-methyl-AP'-'b-homoandrostene, m.p. 159—160°, also ob max. when the molar ratio (I) : (II) = 1:2 for the range (I) = tained similarly from (II); this is hydrogenated (Pt0 2 in AcOH) 0-1—10 mol. per 1. At const. [(II)], the reaction rate falls with and then oxidised to 17a-methyl-I)-homoandrostan-3-one, m.p. 180— increasing [(I)], the effect being greater if the (II) is in excess. 182° (Ruzicka et al., A., 1940, II, 180, 218), which is converted by The temp, coeff. from 20° to 50° gives a heat of activation = 6200 N 2H 4,H20 and NaOEt-EtOH at 175° into 17a-methyl-/)-homo- g.-cal. [a] of the equilibrium mixture depends on the [(II)], since androstane. (I) is not hydrogenated in presence of P t0 2 in AcOH (i) (II) affects the [a] and (ii) higher [(II)] decreases the proportion at 20° or 100° or in presence of Raney Ni in MeOH at 100° or 120°. of (I). Inversion occurs by interaction of a (I)—(II) complex with 17 (a) -Hydroxy-3 (0) -acetoxy-17-acetylenylandrostane is transformed another mol. of (II) or by rearrangement of a complex, 1 (I)—2(II). similarly into a small proportion of a substance, m.p. 176—177°, Tubandt’s view (A., 1911, ii, 28) of the nature of " Rechtsmenthon which has not been investigated further, is confirmed. R. S. C. N H P h th e compound (III), m.p. 232—233°, Effect of solvents in chemical reactions. III. Influence of [a]f>3 -103-3°±6° in dioxan [AO-deriv addenda on the inversion of /-menthone with acids in benzene. ative, m.p. 194° (decomp.)] (obtained A. Weissberger (/. Amer. Chem. Soc., 1943, 65, 242—245; cf. A., by rearrangement of the anil), and 1932, 22).—PhOH, PhOMe, COPh2, /-menthol, COPhMe, COMe2, 17(a) -hydroxy-Z(f3) - acetoxyzWopregnan- /-menthone, and E taO reduce the rate of inversion of /-menthone (I) (in.) 20-one (IV), apparently two forms, m.p. by CC13-C 02H in C6H„ at 20+0-1°. The quant, results, given as 184—-186° and 190— 192°, [a]f,3 -2 4 -3 ° % acid eliminated (order of efficiency as above), parallel those for ± 3 °, [a]2461 -29-4° ±3° in dioxan. (IV) salt-formation of />-NMe2*C6H 4-N2Ph and interaction of CHN 2-C 02E t is oxidised (Cr03 in AcOH at room temp.) and then hydrolysed w ith CC13-C02H (A., 1931, 1375). Inversion of (I) by HC1 in C6H 6 (K2C 0 3-a q . MeOH) to /-androsterone and 17a (0) -hydroxy-3 (0) - is retarded by Et20 but accelerated by PhOH. R. S. C. acetoxy-17 a-methylandrostan-17-one, m.p. 158—159°. (IV) is hydrogenated (Pt0 2 in EtOH) and then acetylated (Ac20 - C 6H 5N Inversion of /-menthone and reaction of diazoacetic ester with at room temp.) to 17(a)-hydroxy-3()3) : 2O(0)-diacetoxya//opregnane, chloroacetic acids. A. Weissberger (J. Amer. Chem. Soc., 1943, 65, 245—246).—Decomp, of CHN 2-C02Et and inversion of /-menthone flat platelets which are transformed at~185° into rectangular prisms, by CC13-C 02H , CHC12-C 02H, or C H 2C1-C02H in C6H 6 all agree with m.p. 200—202°; this appears to be the sole product. (IV), Ac20 , the Bronsted relation. R. S. C. and C6H sN at 100° yield 3(jS): 17(a)-diacetoxya/Zopregnan-20-one, m.p. 227-—229°. M.p. are corr. (block); limit of error ±2°. Isomeric Ar-menthenes (carvomenthenes). A. A. Dodge and E. H . W. Kremers (/. Amer. Pharm. Assoc., 1942, 31, 525—527).—/- and Constituents of the adrenal cortex and related compounds. LVIII. d-Carvoxime are reduced (H2; Raney Ni) to d- (I), b.p. 77— 78°/ Rearrangement of 17-hydroxy-20-ketosteroids into polyhydrochrysene 7 mm., [a]]j +5-92° [hydrochloride, m.p. 192— 195°; picrate, m .p. derivatives. Acetylations in the presence of boron fluoride. C. W. 184— 185° (decomp.)] (cf. Read and Johnston, A., 1934, 413), and Shoppee and D. A. Prins (Helv. Chim. Acta, 1943, 26, 201—223).— Z-carvomenthylamine (II), b.p. 81-5—82-0°/9 mm., [ajf? —8-34° Hydration of 3(0): 17(a)-dihydroxy-17-acetylenyl-A5-androstene by [hydrochloride, m.p. 197— 198°; picrate, m .p. 184— 185° (decomp.)], the method of Stavely (A., 1940, II, 180; 1942, II, 147) affords respectively. (I), treated with H N 02, refluxed, steam-distilled, and 3(yS): 17(a)-dihydroxy-A6-pregnen-20-one (I), m.p. 176— 179°, [a]?,1 fractionated in vac., affords two fractions, (a), b.p. 43-8—45-5°/0-02— -60°±3° in CHClj (acetate, m.p. 187—188°, [a]i? -61-3°±5° in 0-03 mm., [a]|? —1-22° (3 : 5-dinitrobenzoate, m.p. 105— 106°), and CHC13), and na.-anilino-3(f})-hydroxy-17a.-methyl-A5-'D-homoandro- (b), b.p. 44-0—45-5°/0-02 mm., [a]ff +1-62°; similarly, (II) gives (a), sten-Yl-one, m.p. 150°, [a]if —186-6°±7° in CHC13 [acetate, m .p. b.p. 40-5—42-5°/0-025 mm., [a]f>° +0-88° (3 : 5-dinitrobenzoate, m.p. 236—238°; AO-derivative, m.p. 140° and 170—174° (decomp.) 108-5—109-5°), and (6), b.p. 42-5—44-5°/0-025 mm., [a]g> -2-18°. after resolidification], identical with the “ anil ” of Stavely (loc. cit.) These carvomenthol preps, readily lose H20 during fractionation, and Goldberg et al. (A., 1939, II, 553). (I) is converted by Ac20 giving a menthene fraction, the carvomenthol from (I) giving a and C5H6N at 120° into the diacetate (II), m.p. 193— 195°, [a]f? product of [a]i>0 +19-54° [nitrosochloride (impure), m.p. 81-5— 83°, — 55-9°±2° in dioxan, with a compound, m.p. 177—178°, [a]j? and its nitrolbenzylamine base, m.p. 107— 107-5°], and that from — 79°+2° in CHC13, which may be identical with it. Hydration (II) a product of [a]f>° —10-98° (nitrosochloride, m.p. 98—99°). (Stavely) of 3(0): 17(a)-diacetoxy-20-acetylenyl-A°-androstene yields When dehydrated by refluxing with anhyd. CuS0 4 at 180—200° for (II), also obtained by the BF 3 method. Filtration of (I) in dry 9 hr., the carvomenthol from (I) yields a carvomenthene fraction, C6H 6 through Al2Oa followed by immediate elution causes partial W » +11-44° (nitrosochloride, m.p. 90—91°, and its nitrolbenzyl conversion into 3(0): 17a(0)-dihydroxy-17a-methyl-A5-D-homoandro- amine, m.p. 106— 107°, and nitrolmorpholine base, m.p. 159—160°), sten-17-one (III), m.p. 176—178°, [a]i? -105-6°±3° in CHC13; if and that from (II) a carvomenthene fraction, [a]ff —8-65° (nitroso undried solvents are used and longer contact with the column is chloride, m.p. 90—91°, and its nitrolbenzylamine, m.p. 107— 107-5°, permitted the change becomes more complete. 17a(0)-Hydroxy- and nitrolmorpholine base, m.p. 159—160°) (cf. Johnston and Read, 3(0)-acetoxy-17a-methyl-A6-D-homoandrosten-17-one, m.p. 176° A., 1935, 1245). Vais, of d an d n are also given. F. O. H. (change at 160°), [a]J>7 — 91-1°±4° in CHC13, is obtained similarly Lavandulol, a new monoterpene alcohol from oil of lavender.— or by acetylation of (III). (Ill) is converted by Al(OBuy)3 in abs. See A., 1943, II, 181. C3H 4-COM e2 at 100° into 17a (0)-hydroxy-17a-methyl-A4-Z+homo- androstene-3 : 17-dione, m.p. 178— 180°, [a]+ 60-8° + 3° in CHC13. Volatile vegetable compounds. XXII. Composition of “ natural ” (II) is hydrolysed by boiling KOH-MeOH to 3(/3): 17a(a)-dihydroxy- cedrene and constitution of “ synthetic ” cedrene. Y. R. Naves, 17a-methyl-A6-H-homoandrosten-l 7-one, prisms which pass into G. Papazian, and E. Perrottet (Helv. Chim. Acta, 1943, 26, 302— hexagonal prisms at ~260° and at 290° into rodlets which melt at 337).—“ Synthetic” cedrene (termed a-cedrene) (I), b.p. 100°/ 302— 305° (acetate, m.p. 277—278°, [a]™ —100-9°±4° in dioxan). 3-5 mm., [a]f,° —91-22° to —91-33°, obtained by dehydration of (I) is hydrogenated ( P t0 2 in AcOH) and then acetylated to 17(a)- cedrol, m.p. 86—86-5°, [a]# +13-06° in abs. EtOH, +8-76° in hydroxy-3(0): 2O(0)-diacetoxya//opregnane, m.p. 202—204°, [a]!,1 CH 2Ph-OH, +14-26° in dioxan, is a well-defined sesquiterpene with — 7.90 + 3° in CHC13. Nieuwland’s mixture (BF3, Ac20, AcOH, and an endocyclic ethylenic linking. It is possibly a 2 : 8-dimethyl- HgO) (cf. A., 1930, 745) causes hydration of the triple linking 2 : 5-e»do/iopropylidene-[0 : 3 : 5]-dicyc/o-A8-decene (2 : 8-dimethyl- through an unknown series of intermediates whereby the presence 2 : 5-eJido/sopropylidene-l :2:3:4:5:6:7: 10-octahydroazulene). of Hg" is essential, and causes acetylation of free OH. The prep, “ Natural ” cedrene, obtained by fractional distillation from Ameri of the following compounds proves it to be a very powerful acetylat- can oil of red cedar, is a mixture containing a considerable propor ing agent : 3(0): na.(P)-diacetoxy-17a.-methyl-A6-T)-homoandrosten-n- tion of (I), its isomeride with an exocyclic CH 2 (0-cedrene), and a one, m.p. 238—240°, [a]“ — 68-4°±3° in dioxan, from (I) or (III) mixture of tricyclic sesquiterpenes which appear to be allied closely [reduced (H2, P t0 2, AcOH) to 3(0): 17a(0)-diacetoxy-17a-methyl- in structure to the cedrenes. (I) with H 20 2 in presence of H 2S 0 4 D-homoandrostan-17-one (IV), m.p. 221—222°, [a]J>8 — 61° + 3° in and AcOH gives an excellent yield of cedranone, b.p. 134°/4 mm., C O M eJ; (IV), from its 3-monoacetate, m.p. 159— 160°, [a]Jf —34-8° aD -84-70° (oxime, m.p. 103-5—104°, [a]p -78-59° in'CHC13, ±4° in dioxan, obtained by rearrangement (A120 3) of 17(a)-hydroxy- — 69-14° in MeOH). The material, sol. in acid, obtained by Treibs 3(0)-acetoxya//opregnan-2O-one (V); (IV) from (V); 3(0):17a(a)- (A., 1935, 983) by the action of cone. H 2S 0 4 on the cedrenes is a diacetoxy-\lo.-methyl-Ai-P>-homoandrosten-Yl-one, m.p. ~248° after dehydrosesquiterpene or mixture of dehydrosesquiterpenes. c.hanein? at ~240, Tali -32-8°+4° in CHCL, reduced to the H . W . 203 A., II.—v, TERPENES AND TRITERPENOID SAPOGENINS. 204 Constitution of cafesterol. III. Constitution of cafestol. A. which the presence of a C6H 6 ring is established spectroscopically. W ettstein and K. Miescher (Helv. Chim. Acta, 1943, 26, 631— 641 ; This may possibly be explained by the assumption that ring e is cf. A., 1942, II, 371).—Since cafesterol has been shown not to five-membered. M.p. are corr. H. W. belong to the sterol group its name is modified to “ cafestol” (I). The union of the eyclopentane ring in (I) is probably in accordance Triterpenes. LXXIV. Dehydrogenation of quinovic acid to chrys- w ith (A) or (B ). Floridin has proved very useful in the chromato ene hydrocarbons. L. Ruzicka, A. Grob, and G. Anner [with V. graphic purification of cafestyl acetate (II), m .p. 173—-175°, [a]!? Prelog and K. Huber] (Helv. Chim. Acta, 1943, 26, 254— 264; cf. — 91°¿2° in CHC13; it gives slowly and weakly a pure blue colour W ieland et al., A., 1936, 849).—Quinovic acid (I) is dehydrogenated by Se at 360° and the product is extracted successively with light •C- o h : OH petroleum, b.p. 40—70°, and C6H6; from the last solvent 1 : 8-di- methylpicene (II) is isolated. The portion sparingly sol. in light ■ ç f -C-CfT-O H -CH-— C’CHj-OH petroleum after being purified chromatographically gives a hydro carbon, C„H„, m.p. 193—195°, softens slightly at 190° (additive >C CH, >C CH., compound with 2 : 7-dinitroanthraquinone, C24H 24,C44HgOgN2, m.p. \/ 220—230°). The same hydrocarbons are obtained by the dehydro (-4.) ; h (B.) genation of pyroquinovatrienic acid (Wieland et al., A., 1939, II, 425). c - (I) is converted by Se at 330—340° into (II) anhydropyroquinovic acid, and two hydrocarbons, C„H„, m.p. 239—240° (additive com with mineral acids but the intense blue fluorescence under the Hg- pound with 2 : 7-dinitroanthraquinone) and 233-5—234-5° respec vapour lamp is no longer observed. The residues from (II) yield a tively. Spectroscopically they very closely resemble alkylchrysenes, (non-homogeneous) kahweyl acetate, m.p. —146°, [a]“ —234° in thus indicating that ring e of (I) is five-membered. CHClj, characterised by high extinction, intense green-blue colour The action of the Mg compound from /J-o-tolylethyl bromide on with mineral acids, reaction with (1CH-C0)20, and non-fluorescence l-keto-5 : 6-dimethyl-l : 2 : 3 : 4-tetrahydronaphthalene followed by in ultra-violet light ; it is possibly identical with the compound of elimination of H20 from the product affords a-o-tolyl-f3-5 : 6-di- Bengis et al. (A., 1932, 975). Alkaline hydrolysis of the Me2 ester m ethyl-l : 2 : 3 : 4-tetrahydronaphthylethane, m.p. 53—54°, dehydro (A., 1942, II, 198) from epoxycafestanediol gives a M e H ester, genated by Pd-C at 320° to a-o-tolyl-fi-5 : 6-dimethylnaphthylethane, CîoIEoOs, m.p. 150-5—152°, and ultimately a non-cryst. product; m.p. 60°, which is converted by A1C13 in CS2 into 1:7: 8-trimethyl- hydrolysis resembles that of Me2 3£-acetoxy-A5-ætiobilienate. Prob chrysene, m.p. 281—282°. Similarly, a-2 : 3-dimethylphenyl-f3-5 : 6- ably, therefore, C(5) or C(3) closely resembles C(l3) of the steroid dimethyl-1 : 2 : 3 : 4-tetrahydronaphthylethane, b.p. 165°/1 mm., is skeleton and is quaternary or at any rate tert. Differences, how transformed successively into a-2 : 3-dimethylphenyl-f}-5 : 6-dimethyl ever, are found between the cyHopentane ring of (I) and ring d of naphthylethane, m.p. 90-5—91-5°, and 1:2:7: 8-tetramethylchrysene, the steroid mol. The colour reactions of m-C6H 4(N 0 2)2 w ith (I) m.p. 298—299°. M.p. are corr. H. W. and its derivatives are less intense and develop much more slowly than those of 17-ketosteroids. Further, epoxynorcafestanone A Triterpenes. LXXV. Position of the carboxyl group in oleanolic and epoxynorcafestadienone do not condense with ArCHO (see A., and glycyrrhetic acid. L. Ruzicka, O. Jeger, and M. Winter (Helv. 1943, II, 199). M.p. are corr. H. W. Chim. Acta, 1942, 26, 265—279).—Oxidation of Me acetyloleanolate (I) by S e 0 2 in dioxan at 200° gives Me diketoacetyldehydro-oleanol- Triterpenes. LXXIII. Pyrolysis of a product of the transform ate (II), m.p. 251—252° (cf. A., 1939, II, 331), converted .by mild ation of quinovic acid. L. Ruzicka and G. Anner (Helv. Chim. alkaline hydrolysis into Me diketodehydro-oleanolate, m.p. 263—265° Acta, 1943, 26, 129—142).—The dilactonic dicarboxylic anhydride (high vac.), which does not give a yellow colour with C(N0 2)4 and (I), m.p. 260° (decomp.) (cf. Schmitt et al., A., 1940, II, 88), obtained is reconverted by Ac20 - C 5H 6N into (II) and the corresponding by the oxidation of novaquinone with H 20 2 (improved prep.) is acid, which passes in boiling xylene into nor-fl-amyradienedionol pyrolysed at ordinary pressure. The acidic products of pyrolysis acetate (III) (A ; R = Ac), m.p. 323—324° (high vac.), [a]p +227°. consist of a solid and a liquid portion, the former of which is Energetic hydrolysis of (II) leads to nor-(3-amyradienedionol (A ; separated by fractional crystallisation into two isomeric dicarboxylic R = H) (IV), m.p. 295° (high vac.), [a]D +233°, acetylated to (III), acids, C14H 2p04, m.p. 183—184°, [a]D —155° in EtOH (II) [M e2 which is also obtained directly from (I). (Ill) is transformed by ester, a liquid which gives a distinct yellow colour with C(N02)4], N 2H 4,H20 in EtOH at 200° into the pyridazine derivative, C29H 42O N 2, and m.p. 200—202°, [a]n —170° in EtOH, either of which is trans m.p. 304—306° (vac.), [a]D +275°, and is hydrogenated (Pt0 2 in formed by boiling Ac20 into the anhydride (III), C14HI80 3, m.p. A cOH a t 90°) to th e substances, C31H 480 3, m.p. 218—219°, and 80—80-5°, which passes into (II) when hydrolysed by OTn-KOH. C31H 460 4, m.p. 271—273°, [a]D +139-4°. (II) is oxidised by Cr0 3 Dehydrogenation of (III) under varied conditions in presence of in AcOH at 80° to Me acetyldiketodehydro-oleanolate oxide, m .p. Pd-C or Se gives 1 : 2-C10H 6Me2 [identified by the m.p. and mixed 243—245°. [a]n —148°, which does not give a positive reaction m.p. of its picrate, styphnate, and additive compound with w ith C (N 0 2)4 and is converted by KOH-MeOH at 200° into the C 6H 3(N 0 2)3] and 1 : 2-dimethylnaphthalene-5 : 6-dicarboxylic an nor-acid (B), m.p. 249—251°, [a]n +63° in C6H 5N (Me ester, m.p. hydride (IV), m.p. 164-5— 165-5°. The established formation of 1 : 8- dimethyl- and 1 : 2 : 8-trimethyl-picene (V) by the dehydrogenation of quinovic acid (VI) and of pure (V) by the similar treatment of norquinovenol proves that 1 : 2-C10H 6Me2 and (IV) can arise only from rings a and b of the pentacyclic skeleton of (VI). A modific ation of Schmitt’s formula (loc. cit.) for (VI) is therefore necessary whereby it is also brought into conformity with the isoprene rule. (VI), (I), and (HI) have accordingly the respective formulae X, Y , an d Z, whereby the structure assigned to rings d and e is pro visional. Treatment of the neutral portion of the pyrolysis products \/ 203—204°), which gives a yellow colour with C(N02)4, and (IV). Ketoacetyloleanolic acid (V) is transformed by Br in AcOH into ketoacetyldehydro-oleanolic acid, m.p. 288—289°, [a]n +233°, which can be sublimed unchanged at 260—270°/high vac. and gives a pale yellow colour with C(N02)4. (V) is decarboxylated in quinoline (cf. A., 1939, II, 29) to acetylnor-fl-amyrenolone, m.p. 237—238° HO.C (high vac.), [a]D +52°, and acetyhior-jl-amyradienolone, m.p. 202°, [ 0 ] d +150°. The acetylnor-^-amyradienolone obtained by the oxidation of glycyrrhetic acid is oxidised by Cr0 3 in AcOH to bisnor-fi-amyrenoltrione acetate, m.p. 246—248° [semicarbazone, m .p. 222—224° (decomp.)]. These observations are not compatible with the constitution assigned to oleanolic and other triterpenic acids by with Girard’s reagent T gives two portions which in composition, B ilham et al. (A., 1942, II, 148) but are consistent with Haworth’s ( ?) C14H 220, [a]n, and are very closely similar but are distin variant of the formulation of the /l-amyrin-oleanolic acid group. guished from one another in ultra-violet absorption spectrum. M.p. are corr. and [a]n are in CHC13 unless otherwise stated. The reacting portion thus appears to be a mix H. W. ture of ketones a fraction of which is a/3-un- Triterpenes. LXXVI. Pyrolysis of methyl hydrogen /.sooleanone- saturated. This portion gives in small yield a lactonedicarboxylate. L. Ruzicka, F. C. van der Sluys-Veer, and 2 : 4-dinitrophenylhydrazone, m.p. (indef.) 125— O. Jeger (Helv. Chim. Acta, 1943, 26, 280—288; cf. A., 1939, II, 130°, corresponding in composition to Ci4h 22o . 220).—Pyrolysis of Me H isooleanonelactonedicarboxylate gives a CO This fraction is treated with MgMel, dehydrated product separated by Girard’s reagent T into a ketonic (I) and a by K H S 0 4 at 185—190°, and then dehydro non-ketonic (II) portion. The semicarbazone, m.p. 203—204°, from CO— o genated with Pd-C or Se at 340—420°, whereby (1) is converted by N 2H 4,H20 and NaOEt-EtOH at 200° into a a liquid C 13H 18 + CH 2 is ultimately obtained hydrocarbon, b.p. ~120°/12 mm., dehydrogenated by Se at 340—350° combine with picric acid or C6H 3(NQ2)3 and in to 1 : 6-C10H„Me2, identified by its compounds, m.p. 132— 133° and 205 A., II.—vi, HETEROCYCLIC. 206 114— 115°, respectively with C,H 3(N 0 2)3 and picric acid. (II) is at 170° it gives 2' : 4'-dimethoxy-4 : 5 : 6'-trimethyl-, m.p. 174— 175°, converted by KOH-MeOH into neutral and acidic portions, or -6'-methyl-, m.p. 140—141°, -1:2:3: 5-tetrahydrodiphenyl-2-carb- the former giving a hydrocarbon, oxylic acid, respectively. M.p. are corr. R. S. C. C 13H22, b.p. ~115°/12 mm., de Identity of laguncurin, kino-yellow, and maclurin. M. Nierenstein hydrogenated by Se at 340—350° (Quart. J . Pharm., 1943, 16, 11—12).—Laguncurin and kino-yellow to 2 : 7-C10H eMe2, m.p. 96—97° (obtained by heating aromodendrin above its m.p.) when acetylated [picrate, m.p. 135—136°; addi (Ac20 + NaOAc) both yield 5 : 7-diacetoxy-4-(3' : 4'-diacetoxy- tive compound with C6H 3(N 0 2)3, phenyl)coumarin, thus identifying both as maclurin. J. N. A. m.p. 151—152°]. The acidic por tions contain 2:7: 7-trimethyl- Pyrrolidines and piperidines.—See B., 1943, II, 145, 174. 3 : 4 : 5 : 6 : 7 : 8-hexahydronaph- Reaction of glutarimides with phosphorus pentachloride. New thalene-l-carboxylic acid, dehy pyridine synthesis. W. W. Crouch and H. L. Lochte (J. Am er. drogenated to 2:7-C10H 6Me2. The Chem. Soc., 1943, 65, 270—272).— [CH2]6NH and PC16 at 50° give results confirm the position of the 2:3: 6-trichloropyridine, m.p. 66—67° (cf. Bernheimer, A., 1882, double linking and the disposition 1189), hydrogenated (Pd-C; MeOH-HCl) to C5H5N and probably of Me groups in oleanolic acid identical with a substance prepared by Sell et al. (J.C.S., 1898, 73, [A but are not reconcilable with the formula of Bilham439). et al. CH 2:CMe-C02Me (I), CN-CH2-C 02E t (II), and NaOEt in (A., 1942, II, 148). A suggested scheme for numbering the jS-amyrin boiling EtOH give C0,H-CH(CN)-CH 2-CHM e-C02Me, which at 220° residue (see A) is given. M.p. are corr. H. W. gives C 0 2 and CN-[CH2]2-CHM e-C02Me, b.p. 157—160°/58 mm., converted by boiling 50% H 2S 0 4 and then 25% NaOH into C 0 2H-[CH 2]2-CHM e-C02H, m.p. 75—76°. The derived anhydride VI.— HETEROCYCLIC. (prep, by AcCl) with NH, at 120° and then 200° gives a-methyl- Production of furfuraldehyde from D-lyxose and £>-ribose. R. C. glutarimide, m.p. 91°, converted by PC15 (3 mols.) into 2:5:6- Hockett, A. Guttag, and M. E. Smith (/. Amer. Chem. Soc., 1943, trichloro-2-methylpyridine, m.p. 94—95°. Condensation of (I) and 65, 1—3).—The amounts and rates of production of furfuraldehyde (II), methylation, hydrolysis, etc. as above give aa'-dimethylglutar- produced from D-lyxose (I) and D-ribose (II) by 12% HC1 under imide, m.p. 172—174°, and thence by PC16 2 : 6-dichloro-3 : 5-di- standard conditions are recorded. Yields are 23-xylose > (II) > methylpyridine, m.p. 97—98°. R- S. C. L-arabinose > (I). R ates are (II) > (I). R. S. C. Simplified synthesis of nicotinamide and the reaction of hydrogen Furyl ketones.—See B., 1943, II, 146. peroxide with nitriles. A. Georg and P. Bachmann (Helv. Chim. Acta, 1943, 26, 358—362).—A very poor yield of nicotinamide (I) Rearrangement of phenyl allyl ethers. VIII. Ethyl p-yy-di- is obtained by the action of 90% H 2S 0 4 on 3-cyanopyridine (II) a t methylallyloxybenzoate. W. M. Lauer and O. Moe (/. Amer. Chem. 125°. Treatment of (I) with H 20 2 in feebly alkaline solution at Soc., 1943, 65, 289—293; cf. A., 1943, II, 194).—£>-0H-C6H4-C02Et 65° gives (II) in max. yield ~19%. The yield of (II) increases (I), CMe2'.CH-CH2Br, and K 2C 0 3 in boiling COMe2 give an ester w ith [H 20 2] to ~ 6%, after which it declines. H. W. (76%), hydrolysed by KOH-MeOH to p-y-methyl-A?-butenoxybenzoic acid (II), m.p. 130—151°. With aq. KMn0 4 this gives p- Derivatives of pyridine acids. I. jV-jS-Acylaminoethylnicotin- C 0 2H-C6H 4-0-C H 2-C02H and with H 2-P d -C a C 0 3 gives amides. E. M. Hodnett and V. E. Stewart (J. Amer. Chem. Soc., 1943, 254—255).—Et nicotinate and NH 2-[CH2]2-NHAcyl at p-C H 2Bu0-C6H 4-CO2H, m.p. 141—142°, also obtained from (I) by 65, CH 2B u0B r-K 2CO3-COM e2 and then KOH-MeOH. The E l ester 100° give nicotin-fl-acet-, m .p. 170— 171°, -propion-, m .p. 126— 127°, (prep, by way of the Ag salt), b.p. 92-5—93°/0-l mm., of (II) a t -n-butyr-, m.p. 157—159°, -n-valer-, m.p. 141—142°, and -n-hex- 197—224°/50 mm. gives CMe2iCH2, (I), and, by “ abnormal” re amidoethylamide, m.p. 124—125°. The products are convulsant arrangement, after hydrolysis, 1 : 1 : 2-trimethyl-l : 2-dihydrobenz- stimulants, less toxic than nikethamide but deficient in potency. furan-4-carboxylic acid (III), m.p. 180— 182° (p-bromophenacyl ester, R . S. C. m.p. 105— 106°). o-OMe-C3H 4-COMe (IV), b.p. 115— 117710— 12 Synthesis of nicotinuric acid. S. W. Fox and H. Field, jun. (J. mm., with MgPriBr gives f3-o-anisyl-y-methyl-n-butan-f}-ol, b.p. 90— Biol. Chem., 1943, 147, 651—652).—Nicotinamide is converted by 91°) 1 mm., dehydrated by H 2S 0 4 in AcOH at room temp, to N 2H 4,H20 in boiling, conc. aq. solution into nicotinhydrazide, m.p. P-o-anisyl-y-methyl-AP-butene, b.p. 77—78°/l mm. [with Cr03-AcOH 158— 159°, converted into th e azide, m.p. 48—49°, which with aq. gives (IV) and COMe2], which with 48% HBr in boiling AcOH NH 2-CH2-C02Na affords nicotinuric acid (nicotinylglycine), m.p. yields 1:1: 2-trimethyl-l : 2-dihydrobenzfuran, b.p. 62—63°/l mm. 238—241° (decomp.). H. W. W ith Ac20-A1C13 in P h N 0 2 at <10° this gives 4-acetyl-l : 1 : 2- Vitamin B group. II. H. von Euler, L. Ahlstrom, and H. trimethyl-1 : 2-dihydrobenzfuran, b.p. 140—142°/4—5 mm. (semi- Hasselquist (Arkiv Kemi, Min., Geol., 1942, 15, B, No. 21, 8 pp.).— carbazone, m.p. 186—187°; with PhCHO-alkali gives the 4- Nicotinyl chloride (I) (hydrochloride used) (1 mol.) and CO(NH 2)2 CHPh'.CH-CO derivative, m.p. 108— 109°), oxidised by NaOCl-aq. (2 mols.) in C5H 5N give nicotiny¡carbamide, m.p. 229° (decomp. . MeOH at >48° to (III) (proof of structure), m.p. 182—183°. Re Acetylsulphanilhydrazide and (I) in C 5H 5N at 90—110° afford placement of K 2C 0 3-C 0 M e 2 in the prep, of (II) by NaOEt-EtOH N'-mcoOnyZ-N4- (II), m.p. 197° ( + H 20 ), or (6 days at 100°/12 mm.) leads to 1 : 1 -dimethylchroman-5-carboxylic acid, m.p. 176—177° anhyd., m.p. 235° [hydrochloride, m.p. 239°; Ac20 gives the N1-zlc (p-bromophenacyl ester, m.p. 147—148°), also obtained from (I) by derivative, C 16H 160 5N 4S, m.p. 208° (decomp.)], and N 1-dinicotinyl- CMe2iCH2 and ZnCl2 in AcOH at room temp, and later ~40°. TSi-acetylsulphanilhydrazide (III), + H 20 , m .p. 197°, or (2 days a t R. S. C. ]10°/12 mm.) anhyd., m.p. 208° (dihydrochloride, m.p. 220°). (II) Preparation of a/i-unsaturated aldehydes.—See A., 1943, II, 195. is also obtained from nicotinhydrazide and p-NHAc-C 6H 4-S 02C l- CTljN at 90—110°, whilst (I) and (II) in C6H 5N at 100° afford Addition of dienes to coumarin and substituted cinnamic acids. (III). (II) and 10% HCl-EtOH give is1 -nicotinyIsulphamlhydrazide, I. R. Adams, W. D. McPhee, R. B. Carlin, and Z. W. Wicks (/. m.p. 209°. A. T. P. Amer. Chem. Soc., 1943, 65, 356—360).—(CH2:CMe)2 (I), but not (CH2!CH)2 (II) or isoprene (III), adds to coumarin in xylene at 260° Nicotinamide-nucleoside. F. Schlenk and H. von Euler (A rkiv to give 4': 5'-dimethyl-1': 2' : 3' : &'-tetrahydro-Z : 4 : 5 : G-dibenz-2- K em i, M in ., Geol., 1941, 14, A, No. 13, 12 pp. ; cf. A., 1935, 1024).— pyrone (22%), m.p. 181—181-5°, also obtained from trans-o- The isolation of nicotinamide-nucleoside, C 11H 160 5N 2C1, + H 20 (hydro OH-C6H 4-CH:CH-c6 2H in xylene at 185° and dehydrogenated by chloride)I (nicotinamide : pentose : : 1-03 : 1), from phosphatase and P d -C -C 0 2 at 280—320° to 4' : 5'-dimethyl-3 : 4 : 5 : H-dibenz-2- cozymase in H20 + 0-lN-NaOH at pH 4—5 at 30° for 3—4 days pyrone (IV) (71%), m.p. 175—175-5°. «s- 0-OMe-CeH 4-CH:CH-CO2H is described. A. T. P. (V) (modified prep.; 93% yield) and (I) in xylene at 170° give Pyridines.—See B., 1943, II, 146. 2'-methoxy-4 : 5-dimethyl -1 : 2 : 3 : 6 - tetrahydrodiphenyl- 2-carboxylic acid, m.p. 191°; an isomeride (VI), m.p. 159—159-5°, is obtained Mesityl oxide and diacetone alcohol in the Bucherer synthesis of from (Srs.) M. M. Stimson, and M. J. Hart. VI. Effect of pH on the m .p. 135— 137°, -4-, m .p. 133— 134-5°, and -5-methylthiazolidine, spectrum of uracil-5-car boxy lie acid. VII. Effect of hydroxy- m .p. 114— 114-5°, and -5-phenyIthiazolidine, m .p. 139-5— 140-5°, substitutions on the ultra-violet absorption of the series : hypo- with smaller amounts of 2-p-nitrobenzenesulphonimido-3-p-nitrobenz- xanthine, xanthine, and uric acid. (Srs.) M. M. Stimson and M. A. enesulphcmyl-thiazolidine, m.p. 268-5—270-5", -4-, m.p. 242— 242-5°, R eu ter fJ . Amer. Chem. Soc., 1943,65,148-— 151.151— 152, 153— 155 ; and -5-methylthiazolidine, m.p. 219-5—220-5°, and -5-phemylthiazol- ef. A., 1931, 1308).—V. Comparison of the absorption spectra of the idine, m.p. 215-5—218°. Sn-HCl-aq. EtOH at 45—47° reduces pairs uracil-1 : 3-dimethyluracil and xanthine-caffeine shows that (VI) etc. to 2-imino-3-sulphanilyl-thiazolidine (VII). m .p. 144— 145°, the unmethylated compounds exist as ketones until the pH becomes -4-, m.p. 137—138°, and -5-methylthiazolidine, m.p. 153— 153-5°. high. Results of Levene et al. (A., 1926, 1260) for uracil (I) Dil. H 2S0 4 at 100° hydrolyses (VD etc. to 3-p-nitrobenzenesulphonyl- are confirmed for pH 3— 11. pH has a slight effect on the spectra thiazolid-2-one (VHD, m.p. 182—183°, -4-, m.p. 139—141°, and of the methylated compounds, “ resonance ” (tautomerism), -o-methylthiazolid-2-one, m.p. 177°, and -5-phenylthiazolid-2-one, m.p. •C+(:0):C--CHj-^-CO-CH:CH-^-C(OH):c:CH- and -NMe-CHIN- ^ 165-5— 168°, respectively. Acid hydrolysis of (VID etc- also affords •NMe-C_rX~H\ being suggested as the cause. (ID. (IID. and (IV). Preliminary results show the compounds VI. Introduction of C02H at C<5> of (I) shifts the weakest (VIII) etc- to be th e m ost effective of these products ag ain st )3-haemo- absorption of the band at 2700—2900 a. from p H 11 to p H 7. lytic streptococci, although ineffective against type I pneumococci. Absorption at 2170 a. is due to the COaH. R. S. C. VII. Absorption spectra of the hypoxanthine (ID, x anthine (IID. Thiazoles.—See B., 1943, II, 174, 175, 178, 199. and uric acid (IV) are reported for pH 3, 7, and 11. At pH 7 each Cyanine dyes.—-See B., 1943, I I , 174. OH shifts the max. 200 a. towards the red and increases the mol. extinction by 1000 units. (II) shows a drop at pH 7 preliminary Isosteric and structurally similar compounds. XVII. Derivatives to enolisation. (in, resem bles (D in showing enolisation only at of pyrimidinothiazole. H. Erlenmeyer and H. P. Furger (H elv. pH 11. Since the absorption of (IV) resembles the alkaline absorp Chim. Acta, 1943, 26, 366—368).—Monobromobarbituric acid and tion of (IV) is probably monoenolic even in acid. R. S. C. HCS-NH 2 in boiling E taO give 2' : 6'-diketo-V : 2' : 3 ': d'-tetrahydro- (HD, NH-CO-C-S^ „ , Protoporphyrin. I. Purification of protoporphyrin EX as obtained pyrimidino-5' : 4'-5 : 4-thiazole, ¿o-NH-C-N^^^ L(D. R = H ]. de from haemoglobin, n . Improved micro-method for converting comp. 305— 310°. 2 ' : 6'-Diketo-2-methyl-l' : 2" : 3 ' : 6’-tetrahydro- protoporphyrin into mesoporphyrin. M. Grinstein and C. J . Watson pyrimidino-5' : 4/-5 : 4-thiazole [(D> R = Me], decomp. 247°, is (/. Biol. Chem.. 1943, 147, 667—669, 671—673).—I. Crude proto obtained similarly from MeCS-NH2 in boiling EtOH. H. W. porphyrin is purified by dissolution in CjHjN and addition of light petroleum (D, b.p. 30—60\ to incipient pptn.; separation is nearly quant, if sufficient (D is used at 0°. Protoporphyrin Me ester, VII.—ALKALOIDS. m.p. 223—224°, is obtained by chromatography on A120 3 w ith CHC13-(D as eluent. It is best hydrolysed by overnight contact Spectroscopic detection of the opium alkaloids. P. Csokan (Z. w ith 25% HC1 a t 0°. anal. Chem., 1942, 124, 344—351).—Extinction curves are repro II. Modifications in the method of Fischer et al. (A., 1924, i, 230) duced, and band max. tabulated. L. S. T. and Schultze (A., 1942, n i, 394) improve the yield of mesoporphyrin Aconite alkaloids. XI. Action of methyl-alcoholic sodium to —450%. H . W. hydroxide on atisine, fsoatisine, and dihydroatisine. W. A. Jacobs Reactions of morpholinomethanol with compounds containing and L. C. Craig (J. Biol. Chem., 1943, 147, 567—569; cf. A., 1942, active hydrogen atoms. M. Zief and J. P. Mason (J. Org. Chem., II, 335).—The conversion of atisine (D into dihydroatisine (II), 1943,8, 1—6).—Addition of the requisite nitroparaffin to a mixture of m.p. 149— 151° softens at 142°, [a]^ —44° in PhMe, is confirmed by 37% CHjO and morpholine at 0° gives p-nitro-ay-dimorpholino-, m.p. analysis of the hydrochloride (III), m.p. 259° (decomp.) after soften 119—120°, and f3-nitro-ay-dimorpholino-P-methyl-,m.p. 124— 125°, ing, and by the observation that (ID or (III) absorbs 1 H 2 ( P t0 2 -propane and p-nitro-a-morpholinobntane (D, b.p. 134—136°/15 mm. in MeOH) with production of a mixture of isomerides from which (picrate, m.p. 120— 122°). These substances are reduced readily in tetrahydroatisine (IV), m.p. 172— 173°, [a]^ —10° in C 5H SN, can a Parr hydrogenation apparatus of the low-pressure type using a be isolated. Milder treatment of (D with NaOH-MeOH leads to Raney Ni catalyst activated by the method of Covert and Adkins iso atisine (V), C22H 330 2N, m.p. 150—151°, [o]^ —16-5° in PhMe and 96% EtOH, thus giving p-amino-ay-dimorpholino-, m .p. 67— 68° [hydrochloride (VD, m.p. 295—299° (decomp.) after softening, [a]“ (pheny¡carbamide, m.p. 233—234°), and p-amino-ay-dimorpholino-p- — 4° in H jO ]. (V) or (VD absorbs 2 H2, giving a mixture from which methyl-, b.p. 148—150°/1 mm. (pheny¡carbamide, m .p. 177— 178°), (IV) is obtained. H. W. -propane and j3-amino-a-morpholinobutane, b.p. 102— 104°/14 mm. (3 : 5-dinitrobenzoate, m.p. 162— 163°; gummy products with PhNCO Aconite alkaloids. XII. Benzoylheteratisine, a new alkaloid from and a-C1(,H--NCO; waxy Bz derivative; does not give Ac or Aconitum heterophyllum. W. A. Jacobs and L. C. Craig (J. Biol. p-C ,H 4B r-S 0 2 derivatives). Of these N02-derivatives only (D Chem., 1943, 147, 571—572; cf. A., 1942, II, 335).—Extraction of appears to be reducible by Sn and HC1. Morpholinomethanol (ID atis root with dil. H 2S 0 4 and treatment of the neutralised (Na2C 0 3) does not appear to react with o- or p-C 5H 4M e-N 02 and the product extract with C„H 8 rem oves benzoylheteratisine (D, C29H 370 6N, m .p. of its reaction with 1:2: 4-CsH 3M e(N 02)2 explodes when distillation 213—214° after softening, [a]“ +73° in EtOH [hydrochloride, m .p. is attempted. (ID is transformed by the necessary primary or sec. 218—221° (decomp.) after darkening and softening], hydrolysed to amine and anhyd. KjC0 3 at room temp, into morpholinomethyl- BzOH and heteratisine, m.p. 265—267° (slow decomp.), [a]*,8 + 4 0 ° butylamine, b.p. 58—62°/13 mm., -aniline, b.p. 108— 112°/10 mm., in MeOH, which possibly does not occur as such in A. heterophyllum -o-toluidine, b.p. 107—109°/10 mm., -diethylamine, b.p. 86—89°/ but is an artefact produced from (D during the isolation process. 13 mm., -dibutylamine, b.p. 134— 136°/14 mm., -dicyclohexylamine, H . W . b.p. 112— 116°/8 mm., -piperidine, b.p. I l l — 113°/12 mm., and -morpholine, b.p. 122—-124°/12 mm. NHPhMe and (ID gave a VIII.— ORGANO-METALLIC COMPOUNDS. mixture from which no homogeneous compound other than di- morpholinomethane could be isolated. NPhMe2 and (II) do n o t Relative reactivities of organo-metallic compounds. XLVL Addi appear to react. Picrates of these methylenediamines could not tion of metals to phenylated olefines in liquid ammonia solution. be obtained owing to the hydrolysis caused by 96% EtOH. (II) H. Gilman and J. C. Bailie. XLVH. Organo-strontium compounds. does not appear to react with MeCN, EtCN, or PtCX but with H. Gilman, R. N. Meals, G. O’Donnell, and L. Woods (J. Amer. CH2Ph"CN yields a-morpholinomethyl-a-tolunitrile, b.p. 103—-105°/ Chem. Soc., 1943, 65, 267—268, 268—270).—XL VI. CPh2XH 2 w ith 7 mm., in 51% yield. CH 2Ph-COMe and (II; give th e compound, X a in X H 3 and then XH 4C1 gives CHPh2Me (67%) and (CH2-C H Ph2)2 CI3H j80 3N2, b.p. 109—-1H°/11 mm., which does not give a picrate. (17%) (cf. Wooster et al., A., 1934, 762); with Ca 45—70 and 14%, PhenyIdimorpholinomethane, m.p. 101—101-5°, is formed from (II) with Sr 20 and 14%, and with Ba 70 and 35%, respectively, were and PhCHO at room temp. H. W. obtained. CPhjICHPh with Ca, Sr, and Ba in NH 3 gives 40, 61; and 48%, respectively, of CHPh2-CH2P h. C H P h3 with Ba in NH 3 Sulphanilamide compounds. VII. Thiazoline derivatives. J. H . and then C0 2 gives only a trace of CPh3-C 02H. Hunter and H. G. Kolloff (J. Amer. Chem. Soc., 1943, 65, 156— 159 ; XLVII. SrEtj (prep, from ZnEt2 and Sr in C„H#) is a highly cf. A., 1941, II, 147).—^-NHAcybC,H4-S02Cl and 2-amino-A2-thi- reactive compound. With CPh2!CH2 it gives Sr(CPh2Pr“)2, con azoline hydrobromide (I) in aq. N a2C 0 3-E t20 give 2-imino-3-'Si- verted by C0 2 into C Ph2Pr“-C02H (20%). With PhOMe it gives, acetyl-, m.p. 183°, and -3-~Sl -n-hexoyl-, m.p. 160—160-5°, -sulphan- after treatment with C02, 0-OMe-CsH 4-CO2H, with dibenzfuran or ilylthiazolidine, hydrolysed by dil. H 2S 0 4 at 100° to XH 3 and dibenzthiophen gives the 1-carboxylic acid, with l-C 10H,Br gives 3-suiphanilylthiazolid-2-one (ID, m.p. 209—210°. Similarly are pre Sr(C10H ,- l )2 and thence a-C10H,*CO2H , w ith C 0 2 gives EtC0 2H , pared 2-imino-3-S\i-acetylsulphanilyl-A-methyl-, m.p. 178-^179°, -5- and with PhCN gives COPhEt. R. S. C. methyl-, m .p. 162— 163°, and -o-phenyl-thiazolidine, m .p. 181— 183°, 2-imino-3-'Sx-n-hexoylsulphanilyl-i-methyl-, m .p. 145— 146°, -5- Relative reactivities of organo-metallic compounds. XLV. Colour methyl-, m .p. 164— 165°, and -o-phenyl-thiazolidine, -(-EtOH, m.p. test for some highly reactive organo-metallic compounds. H . G ilm an 203—204°, and thence by hydrolysis 3-sulphanilyl-A-methyl- (III), and L. A. Woods. XLV HI. Direct thallation of dibenzfuran. H. m .p. 134-5— 135-5°, -5-methyl- (IV), m .p. 190-5— 191-5°, and -5- Gilman and R. K. Abbott, jun. (J. Amer. Chem. Soc., 1943, 65, phenyl-thiazolid-2-cme (V), m.p. 168—170°. £-X0 2-Ci5H 1-S 02C1 w ith 33—34, 122— 123; cf. A., 1942, II, 337).—XLV. Development of a (D etc. yields 2-imino-3-p-nitrobenzenesulphonyl-thlazolidine (VD. red colour on addition to CH 2P h -N H 2 or N H (C H 2P h )2 (I) in light 2 1 1 A., II.— ix , PRO TEIN S t o x i, ANALYSIS. 212 petroleum distinguishes reactive from unreactive organo-metallic m.p. 182°, o-, m.p. 163°, m-, m.p. 146°, and p -tolyl, m .p. 1 7 1 ’51* com pounds (cf. K rabbe et dl., Ber., 1941, 74, 1343). Examples of thym yl, m.p. 147°, o-, m.p. 236°, and p -N 02-CtHt ethers, pi.p. 19* • reactive compounds are Li, Na, K, LiR [R = Me, Et, Bu1, w-C16H 33, M.p. are corr. and ±0-5°. R- S. C. CeHn, Ph, p-C„H 4Ci, p-N M e2-C6H 4, 2:3:6: l-(OM e)3C6H 2], LiNM e2 NaR (R'= «-amyl, w-C18H 37, CH 2Ph, Ph), KEt, 1 : 8-disodiodi- [Detection of] ethylene glycol, propylene glycol, glycerol, and di ethylene glycol. M. Orchin (/. Assoc. Off. Agric. Chem., 1943, 26, benzfuran, SrEt2, BaEt2, and BaPh2, and of unreactive compounds 99—101).—One drop of a substance, known to be one of the above, 2Ph-MgCl, are Ca, Sr, Ba, MgMeCl, MgRBr (R = Me, Et, Ph), CH is treated with H 5I0 6; org. products are CH 20, CH20 + MeCHO, CoEt2l CaBu“I, CaPhI, and ZnEt2. Colours are given more slowly C H 20 + H C 0 2H, and — , respectively. 0 ([CH2]2-0 H )2 is identified by dZ-CHPhMe-NHj, Ph-[CH 2]*-NH2 [x = 2 or 3), CH 2:CH-CH2-N H 2, as the bis-3 : 5-dinitrobenzoate, m.p. 150-5—-151-5° (corr.). NH(CH 2-CH:CH2)2, NH 2Ph, 0-CloH 7-NH2, or p-C 6H 4Br-NH2, but » A. A. E. not by N(CH 2P h )3, NMe2-CH2P h, N H 2Me, N H 2Bu“, NHMe2, N H Et2, Photometric determination of reduced and total ascorbic acid.— NH 2-[CH2]2-OH, NHPhMe, Or p-C 6l l 4(NH2)2. Treating (I) with See A., 1943, III, 502. LiBu“ in Et20 and then with C0 2 gives 2-carboxydibenzylamine, m.p. 164-5— 165-5° (preheated at 150— 155°) [lactam, m.p. 89—90°, Chromogenic reagent for vitamin-C determination.— See A., 1943, formed at 140°; oxidised by KMn04- K 0 H to 0-C6H 4(CO2H )2], II I , 502. intermediates being LiN(CH 2P h )2 and then CH 2Ph-NLi-CHPhLi. Colour reaction for methionine. L. H. Sofin, H. Rosenblum, and XLVIII. Dibenzfuran and T1C13 in H 20 - N 2 at 110° and later R. C. Schultz ( /. Biol. Chem., 1943, 147, 557— 559).—Methionine (I) 165* give T12C13 and Tl bis-l-dibenzfuryl chloride (9%), converted gives a yellow colour with a saturated solution of anhyd. CuS04 in by I in CHC13 into Til and 1-iododibenzfuran (38%). R. S. C. conc. H 2S04. The test is not shown by alanine, arginine (sulphate), aspartic acid, cystine, glutamic acid, glycine, histidine (sulphate), hydroxyproline, ¿soleucine, leucine, lysine (sulphate), norleucine, IX.— PROTEINS. phenylalanine, proline, serine, threonine, or valine. Tryptophan Nature of peptones.—See A., 1943, III, 400. gives a bright yellow colour with a slight fluorescence and tyrosine a yellow colour less intense than and of different shade from that Purification of tomato bushy stunt and tobacco mosaic viruses.— given by (I). The reaction is adapted to the determination of (I) See A., 1943, III, 441. in leucine, which enhances the colour and hence must be present in Inactivation of tomato bushy stunt virus by heating and freezing. equal amount in the blank and test sample. H. W. Ultracentrifugal examination.—See A., 1943, III, 441. Raman spectra of sugars.— See A., 1943, I, 176. (Miss) F. B. Seibert and J. W. Nelson Proteins of tuberculin. —See A., 1943, III, (J. Amer. Chem. Soc., 1943, 272—278).—-Electrophoresis shows Separation of carotenes from xanthophylls. 65, 540. presence in tuberculin of a slow protein having mol. wt. —32,000 and a faster one having mol. wt. ~16,000. Both have immuno Determination of 2 : 4-diaminophenol. I. S. Shupe (/. Assoc. Off. logical specificity, but the former is more potent as a tuberculin Agric. Chem., 1943, 26, 123—125).—An empirical gravimetric and more antigenic. Immunising rabbits with the larger protein method based on the formation of a mixture of OBz derivatives is causes sensitisation to the protein and to " old tuberculin ” and given, together with microchemical identification tests. A. A. E. the presence of antibodies in the y-component of the sera. The Colour reactions for stilboestrol. T. T. Cocking (Analyst, 1943, 68, smaller protein may cause antibodies to appear with a-globulin (or 144— 146).—Stilboestrol (I) with an excess of Br in AcOH at 100° albumin). r, s. c. (bath) for 1 min. gives an orange solution which when treated successively with EtOH and HaO forms a violet colloidal dispersion (prevented by oil), provided free Br (or Cl2 but not I) is present. X.— MISCELLANEOUS UNCLASSIFIABLE The colour is extracted by various org. solvents (e.g., CHC13) giving SUBSTANCES. orange-red solutions which fade rapidly when separated and dried. Reaction is quant, and 1 fig. of (I) in 0-1 ml. of AcOH may be Hydrogenation of tutin. S. N. Slater (J.C.S., 1943, 143—144; detected colorimetrically. With 0-2 atom (min.) or 4 atoms (max.) cf. A., 1943, II, 117).—Bromohydro-tutin, C15H 170 6Br, m.p. 260° of Br in warm AcOH, (I) gives a green colour; this may be used (decomp.), and -picrotoxinin, C15H 150 6Br, m.p. 254—255° (decomp.), as a rapid colorimetric test. Sucrose interferes but lactone does n o t; are obtained by hydrogenation (Pd-C; EtOH) of tutin (I) and many aldehydes interfere. Neither reaction is given by stilboestrol picrotoxinin (II), respectively. (I) w ith H 2- P t 0 2-Ac0H at atm. diacetate or dipropionate or hexoestrol. Dienoestrol gives both pressure gives a-dihydrotutin, m.p. 224—226° (decomp.), whilst (II) reactions, 0-stilbcestrol only the violet reaction. S. B. similarly yields a-dihydropicrotoxinin, m.p. 253—254° (decomp.). Hydrogenation (Pd-C) of (I) in EtOH gives ß-dihydrotutin,' m.p. Determination of] barbituric acid derivatives, particularly bromo- 232—233° (decomp.). A. T. P. barbiturates and thiobarbiturates. L. E. Warren (J. Assoc. Off. Agric. Chem., 1943, 26, 101—107).—Two equally satisfactory Seeds of Alangium lamarki, Thwaites. Isolation of alangol. extraction methods employing respectively CHC13 and 80 vol.-% P. N. Bhargava and S. Dutt (Proc. Indian Acad. Sei., 1942, 16, A, CHC13-Et20 are described. A. A. E. 328—331).—Extraction of the kernels with C0H 6 yields 0-05% of a sterol, alangol, C42HS30 6(0H), m.p. 296° [acetate, m.p. 265° (shrinks Simplified photelometric determination of trigonelline. S. W . Fox, a t 256°); benzoate, m.p. 276°; phenylurethane, m.p. 242°; digitonide E. W. McNeil, and H. Field, jun. (J. Biol. Chem., 1943, 147, 645— m.p. 270—273°]. A. Li 650).—A simplified method of obtaining relatively highly repro ducible results in the determination of trigonelline bv alkaline treatment has been evolved. MeOH allows the determination to XI.—ANALYSIS. be carried out in a single phase and decolorisation by C is unneces Displacement development in adsorption analysis.— See A. 1943 sary since the blank colour is diminished. Dianisidine condenses I, 187. to a dye of high sensitivity and is usable without previous removal of S04". Glucose interferes with the determination. H. W. Semi-micro-Kjeldahl apparatus.—See A., 1943, I, 187. Microchemical tests for alkaloids and synthetics. G. L. Keenan Semi-micro-determination of sulphur in organic substances. J . H. (J. Assoc. Off. Agric. Chem., 1943, 26, 96—99).—The Reinecke salt Jones ( /. Assoc. Off. Agric. Chem., 1943, 26, 182— 186).—The com reagent provides a distinctive and sensitive test for choline; PtCl4 bined S in non-volatile org. compounds is oxidised to S04" with + Nal is less sensitive. A satisfactory procedure for the HAuCl4 HNO, + HC1 + HC104. Tetrahydroxybenzoquinone is used as test for sulphadiazine is given. A. A. E. indicator in the subsequent titration with BaCl2. Sulphonal is not quantitatively oxidised in this way. " A. A. E. Determination of mercury in phenylmercuric nitrate. W . P. Cham bers (Quart. J . Pharm., 1943, 16, 6—II).—The B.P. 1932 (4th 0-Saccharin chloride, a reagent for identification of alcohols. Addendum) method of assay of HgPh-N0 3 is reviewed and the J. R. Meadoe and E. E. Reid (J. Amer. Chem. Soc., 1943, 65, 457— errors in the method, which lead to high results, are discussed. 458).—^-Saccharin chloride with ROH at 100° (lower aliphatic R), Determination of Hg by a gravimetric method based on pptn. of 125° (sec. or higher primary R), or 125—140° (R = Ar) gives the HgS from an almost boiling solution of the nitrate in glacial AcOH M e, m.p. 182°, E t, m.p. 219°, P ra, m.p. 124-5°, B u a, m.p. 96°, n-amyl, leads to high and somewhat irregular results, but they are ~ 2 % < m .p. 62°, n-hexyl, m.p. 60°, n -C7H 15, m.p. 55°, n-C 8H 17, m.p. 46°, those obtained by the official assay. Determinations of Hg by n -nonyl, m.p. 49°, n-decyl, m.p. 47-5°, n-Cu i/23, m.p. 58-5°, n-C 12H 26, reduction with HC0 2H, by amalgamation of the Hg with Zn, and m.p. 54°, n-C 13if27, m.p. 66°, n-C 14if29, m.p. 62°, n-C 16i f 31, m.p. 72°, by digestion with H 2S 0 4- H N 0 3 all give reliable results. Full details n-C16//33, m.p. 69-5°, n-C 17H35, m.p. 76°, n-C 18H37, m.p. 74-5°, of these methods are given. It is suggested that the Zn-amal- n-C 19H 39, m.p. 80-5°, Prß, m .p. 137°, Buß, m .p. IoO°, sec .-Bu, m .p. gamation should be substituted for the official method, since it is 65-5°, iso-, m.p. 64°, and sec .-amyl, m.p. 38°, ß-ethyl-n-hexyl, m.p. reliable, manipulation is easy, and a determination can be carried 53-5°, y-, m.p. 24°, 8-, m .p. 34°, and e-methyl-n-heptyl, m .p. 53°, out in 1 hr. compared with 4 hr. and 2 hr. for the HC02H reduction 8-octyl, m .p. 10°, CH 2Ph, m.p. 130°, ¡x-heto-octadecyl, m.p. 77°, Ph, and digestion methods respectively. J. N. A. INDEX OF AUTHORS’ NAMES, A., II. JULY, 1943. A b b o t t , R. K., j u n . , 210. Dodge, A. A., 188, 202. H odnett, E. M., 206. Moe, O., 205. Shemin, D., 183. Adams, R ., 194, 205. D utt, S., 211. Hoehn, W. M., 199. Moore, A. M., 207. Shoppee, C. W ., 200. Adler, E., 188, 189. Holmberg, B., 183, 195. Moore, R. S., 181. Shunk, C. H., 197. Aeschbacher, R., 199. Ehrenstein, M., 199. Holm-Hansen, D., 194. Shupe, I. S., 212. Agren, G., 208. Elderfield, R. C., 191, 192. Howard, K. L., 207. N a t h , M. C., 198. Slater, S. N., 211. Ahlström, L., 206. Erlenmeyer, H ., 210. H unter, J. H ., 209. Naves, Y. R ., 202. Smith, L. I., 193, 207. Allen, C. F. H ., 196. Euler, H., 188, 189, 206. Nelson, J. W ., 211. Smith, M. E ., 205. Anderson, L. C., 190. J a c o b s , W. A., 210. Nevers, A. D., 194. Sofin, L. H., 212. Andersson, E ., 191. F e a s l e y , C. P., 186. Jaffe, G. M., 208. Niemann, C., 194. Speer, R. J., 206. Anner, G., 203, 204. Field, H., jun., 206, 212. Jampolsky, L. M., 195. Nierenstein, M., 206. Spillane, L. J., 193. Atkinson, E. R., 194. Fierz-David, H. E., 185, 198. Jeger, O., 204. Sponagel, R., 185. Fletcher, J. H., 186. Johnston, D., 190. O ’D o n n e l l , G., 210. Starkey, E . B., 191. B a c h m a n n , P., 206. Fox, S. W., 206, 212. Jones, J . H ., 211. Orchin, M., 212. Steck, E. A., 208. Bailie, J. C., 210. Francis, W. C., 197. Stewart, V. E., 206. Barnes, R. P., 195. Fredga, A., 191. K a r r e r , P., 182, 187. P a c e , W. T., 198. Stimson, M. M., 208. Beiswanger, J., 199. Fried, J., 192. Keenan, G. L., 212. Papazian, G., 202. Stockar, W ., 198. Bergmann, W., 198. Fuchs, H . G., 200. Keller, R., 187. Perrottet, E ., 202. Stoll, A., 184. Best, C. E., 184. Furger, H. P., 210. Kirchensteiner, H., 200. Peters, A. T., 185. Szónyl, G., 187. Bhargava, P. N., 211. Fuson, R. C., 184. Koenig, H ., 182. Plattner, P. A., 195. Billmeyer, F. W ., jun., 181. Kolloff, H. G., 209. Porter, H. D., 207. T a r b e l l , D. S., 186. Blout, E. R., 191, 192. G a t e s , J. W., jun., 196. Kremers, E., 188, 202. Pressm an, D., 181. Thomas, D. G., 190. Bourguin, J. P., 181. Georg, A., 206. Kritchevsky, D., 198. Prins, D. A., 201. Thompson, T. R., 206. Bowden, G. L., jun., 187. Gianola, G., 192. Kwartler, C. E., 186. Tingstam , S., 189. Brighton, K. W., 195. Gie, G. J., 188. Kyrning, S., 189. R a m b e r g , L., 195. Todd, C. W ., 186. Bromby, N. G., 185. Gilman, H ., 210. Ray, F. E., 187, 197. Tom gren, O., 189. Brown, R. J., 195. Gisvold, O., 198. L a r d o n , F., 182. Reichstein, T., 200. Treadwell, P., 182. Buchanan, C., 188. Goldberg, M. W ., 199, 200. Lauer, W. M., 194, 205. Reid, E. E., 195, 211. Buck, A. C., 185. Goldstein, H ., 192, 197, 198. Lochte, H. L., 206. Renz, J., 184. Van der Sluys-V eer, 204. Buhle, E. L., 207. Goodwin, P. A., 196. Loofbourow, J. R., 208. Reuter, M. A., 208. Vaughan, J . R., jun., 186. Grandjean, P., 192, 197, 198. Lothrop, W. C., 196. Riegel, B., 199. Voegeli, R ., 192. C a r l i n , R. B., 194, 205. Grinstein, M., 209. Louden, J. D., 188. Robertson, J., 188. Cedwall, J. O., 188, 189. Grob, A., 204. Lucas, H. J., 181. Robinson, R ., 187. W a r r e n , L. E ., 212. Chakraborty, M. K., 198. Grum m itt, O., 185. Lucas, P., 186. Rosenblum, H ., 212. Wassermann, D., 187. Chambers, W. P., 212. Guttag, A., 205. Rowe, F. M., 186. W atson, C. J ., 209. Charlesworth, E. H ., 196. M acFarlane, H. M., 196. Ruzicka, L., 182, 203, 204. Weissberger, A., 202, 207. Cocking, T. T ., 212. H a g e r , G. P., 191. McNeil, E . W ., 212. W ettstein, A., 199, 203. Comforth, J. W ., 187. Hardegger, E ., 199. McPhee, W. W., 205. S a f f e r , C. M., jun., 192. Wicks, Z. W ., 205. Craig, L. C., 210. H art, M. J., 208. McRae, J. A., 196. Sanders, P. A., 194. W idequist, S., 195. Crouch, W. W., 206. Haslewood, G. A. D., 199. Marino, S. A., 194. Schinz, H., 181. Wilds, A. L., 197. Csokin, P., 210. Hasselquist, H., 206. Mason, J. P., 209. Schjänberg, E ., 183. W inter, M., 204. Hays, J. T., 194. Meado, J. R ., 211. Schienk, F., 206. Wiselogle, F. Y., 207. D a w s o n , C. R., 187. Helfenstein, A., 184. Meals, R. N., 210. Schneider, A. W ., 199. Woods, L., 210. Day, A. R., 208. Henze, H. R., 206. Meyer, E. W., 199. Schultz, R. C., 212. Woods, L. A., 210. Degering, E. F., 186. Herbst, R. M., 183. Michael, A., 192. Seibert, F. B., 211. Denton, J. J., 184. Hockett, R. C., 205. Miescher, K., 199, 203. Seidel, C. F., 181. Z i e f , M., 209. JUDACTAN ANALYTICAL REAGENTS WITH ACTUAL BATCH ANALYSIS ACTUAL Each Batch subjected BATCH to INDEPENDENT ANALYSIS ANALYSIS before label is printed You are invited to compare the above guaranteed by the specifications of any actual batch analysis with the purities competing maker in this Country or abroad THE GENERAL CHEMICAL & PHARMACEUTICAL CO. LTD. Chemical Manufacturers, Judex Works, Sudbury, Middlesex P rinted in G reat B ritain by R ichard C lay and C ompany, L td. B ungay, S uffolk.