An Overview on Recent Advances in the Synthesis of Sulfonated Organic
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Development of Monitoring Technology for Environmental Radioactivity
KAERI/RR-2037/99 KR0000197 Development of Environmental Radiation Protection Technology Development of Monitoring Technology for Environmental Radioactivity 31/40 Please be aware that all of the Missing Pages in this document were originally blank pages KAERI/RR-2037/99 2=1 # a Development of Environmental Radiation Protection Technology Development of Monitoring Technology for Environmental Radioactivity 2000^ : 0| o| I. II- EML ^-A>^ B \f $14. III. o) 4^0. 9Sr Tc-99 )14^H Tc-991- Tc-95m ^^^>* if?!: 7l^^ TBP TBP ^-^^i TEVA ?l^-^ 7] (Quantulus 1220)-!: 44^ *1^^ Pu-241 ^1-Jl £^7l^ 6}-g-«l-^ ^^^ PSA ^^1 Pu-241 a^^l^^: ^1-g-^^ FOM (figure of-merit)7> Pu-241 31# ^fl^l- S^^>^4. FOM° (Ultima gold-AB) ^4^ ^^^^4. S^ ^ 2]^^-€ Pu-241 ^^£ Pu-241 5H ^^^ PERALS® -g-nfl PERALS® PSA 7]^^; 7>*1 ^^]^^-7)]^7l(Quantulus 1220™, Wallac Rn-222 ^ Ra Rn-222 2. on-line «H3-3|i£ £^7l#-ir 7fl#§|-7] $«H ion chromatography£f <SH^% U-A>^^#7|1- ^l-g-^ «j-A}^ ^1#7]1- 7fl^Sl-^4. ion chromatographyS £|M 4^ 14^4^ ^^ #4^ 3. : 7fl#§V7| ^§1] Pu-242 ^«fi^ pH U-232, Th-229 ^ Am-243 Talvitie IV. (Sr-Spec)i 92 % oR1"^ fe^ ^t^: ^.$1^ £lfe Ba, Ca, Y 4. 111 7} %$\ £#*l|3. DC18C6 0.1 Mi tflsfl DNNS 25 mM ^£7} JL 6I *H 90 %°]$£\ ^S^-f- 4i^ > 1 : 5 - 1 ^^4J^A], ^ aflui*l<g<3 (20 - 500 keV) ^A^ ^S 90 % °1&JL 90Y^ 34.2 %, ne)jL 89Sr^r 50.6 % ^1-1^1^^(500 - 1400 keV)iAi^ 7fl#^^^: ^Sr0] 1.7 %, 90Y7} 49.7 %, nelJL 89Sr^l 44.9 % 3£t- .^-^4. -
University of Warwick Institutional Repository
CORE Metadata, citation and similar papers at core.ac.uk Provided by Warwick Research Archives Portal Repository University of Warwick institutional repository: http://go.warwick.ac.uk/wrap This paper is made available online in accordance with publisher policies. Please scroll down to view the document itself. Please refer to the repository record for this item and our policy information available from the repository home page for further information. To see the final version of this paper please visit the publisher’s website. Access to the published version may require a subscription. Author(s): Hendrik Schäfer, Natalia Myronova and Rich Boden Article Title: Microbial degradation of dimethylsulphide and related C1- sulphur compounds: organisms and pathways controlling fluxes of sulphur in the biosphere Year of publication: 2010 Link to published version: http://dx.doi.org/ 10.1093/jxb/erp355 Publisher statement: This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Journal of Experimental Botany following peer review. The definitive publisher-authenticated version Schäfer, H. et al. (2010). Microbial degradation of dimethylsulphide and related C1-sulphur compounds: organisms and pathways controlling fluxes of sulphur in the biosphere. Journal of Experimental Botany, Vol. 61(2), pp. 315-334 is available online at: http://jxb.oxfordjournals.org/cgi/content/full/61/2/315 Microbial degradation of dimethylsulfide and related C1-sulfur compounds: organisms and pathways controlling fluxes of sulfur in the biosphere Hendrik Schäfer*1, Natalia Myronova1, Rich Boden2 1 Warwick HRI, University of Warwick, Wellesbourne, CV35 9EF, UK 2 Biological Sciences, University of Warwick, Coventry, CV4 7AL, UK * corresponding author Warwick HRI University of Warwick Wellesbourne CV35 9EF Tel: +44 2476 575052 [email protected] For submission to: Journal of Experimental Botany 1 Abstract 2 Dimethylsulfide (DMS) plays a major role in the global sulfur cycle. -
Aqueous Phase Ozonation of Methanethiol and Dimethyl Disulfide
University of Montana ScholarWorks at University of Montana Graduate Student Theses, Dissertations, & Professional Papers Graduate School 1973 Aqueous phase ozonation of methanethiol and dimethyl disulfide Lawrence Roman Schmitz The University of Montana Follow this and additional works at: https://scholarworks.umt.edu/etd Let us know how access to this document benefits ou.y Recommended Citation Schmitz, Lawrence Roman, "Aqueous phase ozonation of methanethiol and dimethyl disulfide" (1973). Graduate Student Theses, Dissertations, & Professional Papers. 1586. https://scholarworks.umt.edu/etd/1586 This Thesis is brought to you for free and open access by the Graduate School at ScholarWorks at University of Montana. It has been accepted for inclusion in Graduate Student Theses, Dissertations, & Professional Papers by an authorized administrator of ScholarWorks at University of Montana. For more information, please contact [email protected]. THE AQUEOUS PHASE OZONATION OF METHANETHIOL AND DIMETHYL DISULFIDE By Lawrence R. Schmitz B.S,, Saint John's University, 1970 Presented in partial fulfillment of the requirements for the degree of Master of Science UNIVERSITY OF MDNTANA 1973 Approved by; /•- /•' Chairnian, Board of Examiners .R„„ Deaj^ Graduate School lkd ^ / '^ 7 3 Date UMI Number: EP36441 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy subnnitted. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. Oiss«rtation PuUiahing UMI EP36441 Published by ProQuest LLC (2012). Copyright in the Dissertation held by the Author. -
Conductivity, Viscosity, Spectroscopic Properties of Organic Sulfonic Acid Solutions in Ionic Liquids
chemengineering Article Conductivity, Viscosity, Spectroscopic Properties of Organic Sulfonic Acid solutions in Ionic Liquids Anh T. Tran, Jay Tomlin, Phuoc H. Lam, Brittany L. Stinger, Alexandra D. Miller, Dustin J. Walczyk, Omar Cruz, Timothy D. Vaden * and Lei Yu * Department of Chemistry and Biochemistry, Rowan University, Glassboro, NJ 08028, USA; [email protected] (A.T.T.); [email protected] (J.T.); [email protected] (P.H.L.); [email protected] (B.L.S.); [email protected] (A.D.M.); [email protected] (D.J.W.); [email protected] (O.C.) * Correspondence: [email protected] (T.D.V.); [email protected] (L.Y.) Received: 14 June 2019; Accepted: 25 September 2019; Published: 1 October 2019 Abstract: Sulfonic acids in ionic liquids (ILs) are used as catalysts, electrolytes, and solutions for metal extraction. The sulfonic acid ionization states and the solution acid/base properties are critical for these applications. Methane sulfonic acid (MSA) and camphor sulfonic acid (CSA) are dissolved in several IL solutions with and without bis(trifluoromethanesulfonyl)imine (HTFSI). The solutions demonstrated higher conductivities and lower viscosities. Through calorimetry and temperature-dependent conductivity analysis, we found that adding MSA to the IL solution may change both the ion migration activation energy and the number of “free” charge carriers. However, no significant acid ionization or proton transfer was observed in the IL solutions. Raman and IR spectroscopy with computational simulations suggest that the HTFSI forms dimers in the solutions with an N-H-N “bridged” structure, while MSA does not perturb this hydrogen ion solvation structure in the IL solutions. -
The Friendly Acid
1 Europe Safety 1 0 2 We know of no ill effects that could have resulted from using our prod- . ® 3 0 BASF SE ucts for the purpose for which they are intended and from processing d Lutropur – e t them in accordance with current practice. According to the experience a Home Care & Formulation Technologies d we have gained up to now and other information at our disposal, our 0 Europe 0 - e Carl-Bosch-Straße 38 products do not exert any harmful effects on health, provided that they 1 0 are used properly, due attention is given to the precautions necessary 2 the friendly acid 67056 Ludwigshafen · Germany 1 0 for handling chemicals, and the information and advice given in our 1 Phone: +49 621 60-0 _ 8 Fax: +49 621 60-42525 safety data sheet are observed. 0 n o i t e-mail: [email protected] i d The purest form of MSA Labeling e s e Details about the classification and labeling of our products and further d BTC Speciality Chemical e s advice on safe handling are contained in the current safety data sheets. r Distribution GmbH e methanesulfonic acid p u Maarweg 163/165 s 2 50825 Köln · Germany Note 1 0 2 This document, or any answers or information provided herein by BASF, . Phone: +49 221 95464-0 3 made by BASF does not constitute a legally binding obligation of BASF. While the 0 www.btc-de.com 1 0 - descriptions, designs, data and information contained herein are pre - e 1 0 sented in good faith and believed to be accurate, it is provided for your 2 1 guidance only. -
Experiment 19 Preparation and Use of Methyl Orange-An A20 Dye
EXPERIMENT 19 PREPARATION AND USE OF METHYL ORANGE-AN A20 DYE . Structure 19.1 Introduction Objectives 19.2 Azo Dyes 19.3 Principle 19.4 Requirements 19.5 Procedure Preparation of dye Dyeing of cloth Indicator Properties of Methic Orgage 19.6 Result 19.1 INTRODUCTION - --- - In the previous experiment you have learnt about synthesis and analysis of a common analgesic drug, aspirin. In this process you have learnt about acetylation reaction and you have yourself performed one such reaction. In this experiment we extend our endeavour of synthesizing organic molecules to another very important class of compounds viz. dyes. You would be preparing methyl orange as a sample of azo dyes, and would be using it to dye a piece of cloth. In this process you would learn about another important organic reaction i.e. diazotisation. Since methyl orange happens to be an acid base indicator you will be checking this property for the prepared sample. In the next experiment you will be learning about yet another importan-t class of organic compounds with wide range of applications-polymers. A brief account of dyes in general and azo dyes in particular has been included in the next section before the principle and procedure for the actual experiment. 0 bjectives After performing this experiment you should be able to: prepare an azo dye, use the prepared dye to dye a piece of cloth, . explain the diazotisation reaction of primary aromatic amines, and explain 'coupling reaction' in context of azo dyes, 19.2 AZO DYES Dyes may be defined as the chemical substances which when applied to a fibre or a surface impart a relatively permanent colour to it. -
(12) United States Patent (10) Patent No.: US 6,437,171 B1 Karpf Et Al
USOO6437171B1 (12) United States Patent (10) Patent No.: US 6,437,171 B1 Karpf et al. (45) Date of Patent: Aug. 20, 2002 (54) PROCESS FOR PREPARING 1,2-DIAMINO J.C. Rohloff, et al., J. Org. Chem. 1998, vol. 63, pp. COMPOUNDS 4545-4550. Green, T., Protective Groups in Organic Synthesis, Chapter (75) Inventors: Martin Karpf, Reinach; René 7, John Wiley & Sons, Inc. 1991, pp. 315–385. Trussardi, Birsfelden, both of (CH) M. Chini, et al., Tetrahedron Lett. 1994, vol. 35, pp. 433-436. (73) Assignee: Hoffman-La Roche Inc., Nutley, NJ P. Van de Weghe, Tetrahedron Lett. 1995, vol. 36, pp. (US) 1649-1652. Y. Yamamoto, J. Chem. Soc., Chem. Commun. 1993, pp. (*) Notice: Subject to any disclaimer, the term of this 1201-12O3. patent is extended or adjusted under 35 M. Caron, et al., J. Org. Chem. 1985, vol. 50, pp. U.S.C. 154(b) by 0 days. 1557-1560. Miller, et al., J. Org. Chem. 1998, vol. 63, pp.9753–9755. (21) Appl. No.: 09/590,317 Advanced Organic Chemistry, ed. March J. John Wiley & (22) Filed: Jun. 8, 2000 Sons, New York, 1992 pp. 353–357. Dobrev et al., Tetrahedron Letters, No. 39, pp. 4013-4016 (30) Foreign Application Priority Data (1972). Jun. 11, 1999 (EP) ............................................ 99.111418 Fulop et al., J. Org. Chem., vol. 58, pp. 1967–1969 (1969). Feb. 21, 2000 (EP) ............................................ OO103588 Abstract #164618y for C10. (51) Int. Cl." ..................... C07C 227/08; CO7C 247/14; * cited by examiner CO7D 317/44 (52) U.S. Cl. ....................... 560/125; 560/128; 560/169; Primary Examiner Ralph Gitomer 549/436; 549/546; 549/961 ASSistant Examiner-Devesh Khare (58) Field of Search ................................ -
CHEM254 Experiment 5 Combinatorial Synthesis of an Azo
CHEM254 Experiment 5 Combinatorial Synthesis of an Azo Dye 1 Many plants yield dyestuffs that will dye wool or silk, but there are few of these that will dye cotton as well. Most will not dye synthetic fibers like polyester or rayon. In addition, the natural dyes, with a few exceptions, do not cover a wide range of colors, nor do they yield “brilliant” colors. Even though some people prefer the softness of the “homespun” colors from natural dyes, the synthetic dyes, which give rise to deep, brilliant colors, are much preferred today. Also, synthetic dyes that will dye the popular synthetic fibers can now be manufactured. Thus, today we have available an almost infinite variety of colors, as well as dyes to dye any type of fabric. Before 1856, all dyes in use were obtained from natural sources. However, an accidental discovery by W.H. Perkin, an English chemist, started the development of a huge synthetic dye industry, mostly in England and Germany. Perkin, then only age 18, was trying to synthesize quinine. Structural organic chemistry was not very well developed at that time, and the chief guide to the structure of a compound was its molecular formula. Based on formulas, Perkin thought that it might be possible to synthesize quinine by the oxidation of aniline and toluidine (methylaniline). N He obtained no quinine, but he did recover a blackish precipitate with properties that could be extracted with ethanol to give a beautiful H2N N NH purple solution. This purple solution subsequently proved to be a good dye for fabrics. -
Methyl Orange Synthesis of Azo Dyes the First Step Is Simply an Acid Base
Synthesis of Azo Dyes Methyl Orange ❖ The first step is simply an acid base reaction. ❖ In order to dissolve the sulfanilic acid in the aqueous solution we add sodium carbonate. ❖ Then we form the diazonium salt by the same mechanism. ❖ When we add the HCl, the nitroso ion is formed from sodium nitrite and this reacts with the amine to form a nitrosoammonium adduct that loses water under the acidic conditions after proton transfer. ❖ This gives the diazonium salt. Aromatic diazonium salts are stable at low temperature. ❖ The terminal nitrogen of the diazonium salt is very electron deficient. ❖ It can be attacked by good nucleophiles. ❖ We dissolve the dimethylaniline in acetic acid. ❖ This forms the dimethylaniline acetate salt. ❖ Neutralize this in situ and the dimethylaniline becomes a good nucleophile due to the activating effect of the dimethylamine substituent. ❖ Attack is in the para position due to hindrance at the ortho position by the bulky dimethylamine substituent. Application of Methyl Orange 1. Fabric Test of Methyl Orange After treating Multifiber 43 cloth with a dye bath of methyl orange, 3 fabrics bound very strongly to the dye, producing a strong orange color: wool worsted, silk, and nylon 6.6. These fabrics are able to interact strongly with the polar sites of methyl orange because they have a high density of polar groups. All of the fabrics that bind strongly to methyl orange are polyamides. Cotton, which is cellulose, binds weakly to methyl orange while Creslan 61, which is polyacrylonitrile, does not bind to the dye. Polypropylene, a non-polar alkane polymer, does not bind to the polar dye. -
Articles, Which Are Known to Influence Clouds and (Nguyen Et Al., 1983; Andreae Et Al., 1985; Andreae, 1990; Climate, Atmospheric Chemical Processes
Atmos. Meas. Tech., 9, 1325–1340, 2016 www.atmos-meas-tech.net/9/1325/2016/ doi:10.5194/amt-9-1325-2016 © Author(s) 2016. CC Attribution 3.0 License. Challenges associated with the sampling and analysis of organosulfur compounds in air using real-time PTR-ToF-MS and offline GC-FID Véronique Perraud, Simone Meinardi, Donald R. Blake, and Barbara J. Finlayson-Pitts Department of Chemistry, University of California, Irvine, CA 92697, USA Correspondence to: Barbara J. Finlayson-Pitts (bjfi[email protected]) and Donald R. Blake ([email protected]) Received: 10 November 2015 – Published in Atmos. Meas. Tech. Discuss.: 15 December 2015 Revised: 2 March 2016 – Accepted: 3 March 2016 – Published: 30 March 2016 Abstract. Organosulfur compounds (OSCs) are naturally 1 Introduction emitted via various processes involving phytoplankton and algae in marine regions, from animal metabolism, and from Organosulfur compounds (OSCs) such as methanethiol biomass decomposition inland. These compounds are mal- (CH3SH, MTO), dimethyl sulfide (CH3SCH3, DMS), odorant and reactive. Their oxidation to methanesulfonic and dimethyl disulfide (CH3SSCH3, DMDS), and dimethyl sulfuric acids leads to the formation and growth of atmo- trisulfide (CH3SSSCH3, DMTS) have been measured in air spheric particles, which are known to influence clouds and (Nguyen et al., 1983; Andreae et al., 1985; Andreae, 1990; climate, atmospheric chemical processes. In addition, par- Andreae et al., 1993; Aneja, 1990; Bates et al., 1992; Watts, ticles in air have been linked to negative impacts on vis- 2000; de Bruyn et al., 2002; Xie et al., 2002; Jardine et al., ibility and human health. Accurate measurements of the 2015). -
Working with Hazardous Chemicals
A Publication of Reliable Methods for the Preparation of Organic Compounds Working with Hazardous Chemicals The procedures in Organic Syntheses are intended for use only by persons with proper training in experimental organic chemistry. All hazardous materials should be handled using the standard procedures for work with chemicals described in references such as "Prudent Practices in the Laboratory" (The National Academies Press, Washington, D.C., 2011; the full text can be accessed free of charge at http://www.nap.edu/catalog.php?record_id=12654). All chemical waste should be disposed of in accordance with local regulations. For general guidelines for the management of chemical waste, see Chapter 8 of Prudent Practices. In some articles in Organic Syntheses, chemical-specific hazards are highlighted in red “Caution Notes” within a procedure. It is important to recognize that the absence of a caution note does not imply that no significant hazards are associated with the chemicals involved in that procedure. Prior to performing a reaction, a thorough risk assessment should be carried out that includes a review of the potential hazards associated with each chemical and experimental operation on the scale that is planned for the procedure. Guidelines for carrying out a risk assessment and for analyzing the hazards associated with chemicals can be found in Chapter 4 of Prudent Practices. The procedures described in Organic Syntheses are provided as published and are conducted at one's own risk. Organic Syntheses, Inc., its Editors, and its Board of Directors do not warrant or guarantee the safety of individuals using these procedures and hereby disclaim any liability for any injuries or damages claimed to have resulted from or related in any way to the procedures herein. -
United States Patent Office
Patented Aug. 31, 1943 2,328,353 UNITED STATES PATENT OFFICE 2,328,353 Azo DYESTUFF INTERMEDIATE Neil Mitchill Mackenzie, Bound Brook, N.J., as signor to American Cyanamid Company, New York, N.Y., a corporation of Maine . No Drawing. Application June 7, 1941, Serial No. 397,086 Claims. (CI. 260-397.7) This invention, relates to Sulfonic acid, and tain two amino groups in which case two mole Sulfonamide derivatives of acetoacetic amides and cules of diketene react and as examples of this to a method for preparing these compounds may be mentioned phenylene diamine sulfonic which have the following general formula: acids and benzidine-2,2'-disulfonic acid. Mono amino disulfonic acids or trisulfonic acids may (CH3COCH2CONH) RX 5 be reacted with diketene, for example, aniline in which R is an aromatic, aralkyl, aliphatic or 2,5-disulfonic acid, Hacid, Chicago acid, amino alicyclic radical, X is a radical included in the R acid, the azo dye aniline coupled alkaline. On group consisting of SOH, SO2NH2 and their salts, H. acid or 1-amino-naphthalene-3,6,8-trisulfonic 7 is an integer included in the group consisting 10 acid. Amino sulfonamides such as sulfanilamide. of 1 and 2, and n is an integer included in the or metanilamide may be used. group consisting of 1,2 and 3. Many of the products of this invention are The products of the present invention may be very soluble in water and in many cases it is prepared by reacting diketene with amino sul necessary to evaporate the solution in order to fonic acids or amino Sulfonamides.