Hydrogen Transmutation of Nickel in Glow Discharge
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Review Article the Copper Radioisotopes: a Systematic Review with Special Interest to Cu
Hindawi Publishing Corporation BioMed Research International Volume 2014, Article ID 786463, 9 pages http://dx.doi.org/10.1155/2014/786463 Review Article The Copper Radioisotopes: A Systematic Review with Special Interest to 64Cu Artor Niccoli Asabella,1 Giuseppe Lucio Cascini,2 Corinna Altini,1 Domenico Paparella,1 Antonio Notaristefano,1 and Giuseppe Rubini1 1 NuclearMedicine,UniversityofBariAldoMoro,PiazzaG.Cesare11,70124Bari,Italy 2 Nuclear Medicine, University of Catanzaro Magna Graecia, Viale Europa, Localita´ Germaneto, 88100 Catanzaro, Italy Correspondence should be addressed to Artor Niccoli Asabella; [email protected] Received 23 December 2013; Accepted 18 April 2014; Published 7 May 2014 Academic Editor: Gianluca Valentini Copyright © 2014 Artor Niccoli Asabella et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Copper (Cu) is an important trace element in humans; it plays a role as a cofactor for numerous enzymes and other proteins crucial 63 for respiration, iron transport, metabolism, cell growth, and hemostasis. Natural copper comprises two stable isotopes, Cu and 65 60 61 62 64 Cu, and 5 principal radioisotopes for molecular imaging applications ( Cu, Cu, Cu, and Cu) and in vivo targeted radiation 64 67 therapy ( Cu and Cu). The two potential ways to produce Cu radioisotopes concern the use of the cyclotron or the reactor. A noncopper target is used to produce noncarrier-added Cu thanks to a chemical separation from the target material using ion exchange chromatography achieving a high amount of radioactivity with the lowest possible amount of nonradioactive isotopes. -
Chapter 13.Pptx
Chapter 13: Alcohols and Phenols 13.1 Structure and Properties of Alcohols C C Alkanes Carbon - Carbon Multiple Bonds Carbon-heteroatom single bonds basic O C C C N C N C X O nitro alkane X= F, Cl, Br, I amines Alkenes Alkyl Halide Chapter 23 OH C C H O C O C C O C C Alkynes phenol alcohols ethers epoxide acidic Chapter 14 H H H C S C C C C S S C C S C C H C C sulfides thiols disulfide H H (thioethers) Arenes 253 Nomenclature of alcohols 1. In general, alcohols are named in the same manner as alkanes; replace the -ane suffix for alkanes with an -ol for alcohols CH3CH2CH2CH3 CH3CH2CH2CH2OH OH butane 1-butanol 2-butanol butan-1-ol butan-2-ol 2. Number the carbon chain so that the hydroxyl group gets the lowest number 3. Number the substituents and write the name listing the substituents in alphabetical order. Many alcohols are named using non-systematic nomenclature H C OH 3 OH OH C OH OH HO OH H3C HO H3C benzyl alcohol allyl alcohol tert-butyl alcohol ethylene glycol glycerol (phenylmethanol) (2-propen-1-ol) (2-methyl-2-propanol) (1,2-ethanediol) (1,2,3-propanetriol) 254 127 Alcohols are classified according to the H R C OH C OH H H degree of substitution of the carbon bearing H H 1° carbon the -OH group methanol primary alcohol primary (1°) : one alkyl substituent R R C OH C OH R R secondary (2°) : two alkyl substituents H R 2° carbon 3° carbon tertiary (3°) : three alkyl substituents secondary alcohol tertiary alcohol Physical properties of alcohols – the C-OH bond of alcohols has a significant dipole moment. -
Radical Approaches to Alangium and Mitragyna Alkaloids
Radical Approaches to Alangium and Mitragyna Alkaloids A Thesis Submitted for a PhD University of York Department of Chemistry 2010 Matthew James Palframan Abstract The work presented in this thesis has focused on the development of novel and concise syntheses of Alangium and Mitragyna alkaloids, and especial approaches towards (±)-protoemetinol (a), which is a key precursor of a range of Alangium alkaloids such as psychotrine (b) and deoxytubulosine (c). The approaches include the use of a key radical cyclisation to form the tri-cyclic core. O O O N N N O O O H H H H H H O N NH N Protoemetinol OH HO a Psychotrine Deoxytubulosine b c Chapter 1 gives a general overview of radical chemistry and it focuses on the application of radical intermolecular and intramolecular reactions in synthesis. Consideration is given to the mediator of radical reactions from the classic organotin reagents, to more recently developed alternative hydrides. An overview of previous synthetic approaches to a range of Alangium and Mitragyna alkaloids is then explored. Chapter 2 follows on from previous work within our group, involving the use of phosphorus hydride radical addition reactions, to alkenes or dienes, followed by a subsequent Horner-Wadsworth-Emmons reaction. It was expected that the tri-cyclic core of the Alangium alkaloids could be prepared by cyclisation of a 1,7-diene, using a phosphorus hydride to afford the phosphonate or phosphonothioate, however this approach was unsuccessful and it highlighted some limitations of the methodology. Chapter 3 explores the radical and ionic chemistry of a range of silanes. -
Reductions and Reducing Agents
REDUCTIONS AND REDUCING AGENTS 1 Reductions and Reducing Agents • Basic definition of reduction: Addition of hydrogen or removal of oxygen • Addition of electrons 9:45 AM 2 Reducible Functional Groups 9:45 AM 3 Categories of Common Reducing Agents 9:45 AM 4 Relative Reactivity of Nucleophiles at the Reducible Functional Groups In the absence of any secondary interactions, the carbonyl compounds exhibit the following order of reactivity at the carbonyl This order may however be reversed in the presence of unique secondary interactions inherent in the molecule; interactions that may 9:45 AM be activated by some property of the reacting partner 5 Common Reducing Agents (Borohydrides) Reduction of Amides to Amines 9:45 AM 6 Common Reducing Agents (Borohydrides) Reduction of Carboxylic Acids to Primary Alcohols O 3 R CO2H + BH3 R O B + 3 H 3 2 Acyloxyborane 9:45 AM 7 Common Reducing Agents (Sodium Borohydride) The reductions with NaBH4 are commonly carried out in EtOH (Serving as a protic solvent) Note that nucleophilic attack occurs from the least hindered face of the 8 carbonyl Common Reducing Agents (Lithium Borohydride) The reductions with LiBH4 are commonly carried out in THF or ether Note that nucleophilic attack occurs from the least hindered face of the 9:45 AM 9 carbonyl. Common Reducing Agents (Borohydrides) The Influence of Metal Cations on Reactivity As a result of the differences in reactivity between sodium borohydride and lithium borohydride, chemoselectivity of reduction can be achieved by a judicious choice of reducing agent. 9:45 AM 10 Common Reducing Agents (Sodium Cyanoborohydride) 9:45 AM 11 Common Reducing Agents (Reductive Amination with Sodium Cyanoborohydride) 9:45 AM 12 Lithium Aluminium Hydride Lithium aluminiumhydride reacts the same way as lithium borohydride. -
UNIT 6 ELEMENTS of GROUP 13 Structure 6.1 Introduction Objectives I 6.2 Oailcrence, Extraction and Uses Occurrec - Extraction Uses I 6.3 General Characteristics
UNIT 6 ELEMENTS OF GROUP 13 structure 6.1 Introduction Objectives I 6.2 Oailcrence, Extraction and Uses Occurrec - Extraction uses i 6.3 General Characteristics I - 6.5 Halides of Bpron anel Aluminium Halides of Boron Halides of Aluminium 6.6 Oxides of Boron and Aluminium I Boric Oxide Aluminium Oxide 6.7 Oxoacids of Boron and Borates 6.8 Borazine 6.9 Complexation Behaviour 6.10 Anomalous Behaviour of Boron 6.11 Summary 6.12 Terminal Questions 6.13- Answers ' -- 6.1 INTRODUCTION In the previous two units, you studied the main features of the chemistry of Group 1 and Group 2 elements, i.e. the alkali and the alkaline earth metals. In this unit you - will study the elements of Group 13, namely, boron, aluminium, gallium, indium and, thallium. While studying the alkali and alkaline earth metals, you have seen that all Zhe elements of these two groups are highly reactive metals and the first element of each group shows some differences from the rest. In Group 13, the differences between the first element and the remaining elements become so pronounced that the first member of the group, i.e. boron is a nonmetal wheieas the rest of the elements are distinctly metallic in nature. In a way, this is the first group of the periodic table in which you observe a marked change in the hature of the elements . down the group. describe the chemistry of hydrides, halides and oxides of boron and aluminium, elucidate the structures of hydrides of boron and aluminium, 6.2 OCCURRENC~,EXTRACTION AND USES Elements bf Group 13 are sufficiently reactive. -
WO 2015/177807 Al 26 November 2015 (26.11.2015) P O P C T
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2015/177807 Al 26 November 2015 (26.11.2015) P O P C T (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every C07D 403/14 (2006.01) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, (21) International Application Number: BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, PCT/IN20 15/000066 DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (22) International Filing Date: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 3 February 2015 (03.02.2015) KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, (25) Filing Language: English PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, (26) Publication Language: English SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (30) Priority Data: 1709/MUM/2014 22 May 2014 (22.05.2014) (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (71) Applicant: WANBURY LTD. [IN/IN]; BSEL tech park, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, B wing, 10th floor, sector 30A, opp. -
Lithium Aluminium Hydride.Pdf
SIGMA-ALDRICH sigma-aldrich.com Material Safety Data Sheet Version 5.0 Revision Date 03/12/2011 Print Date 09/12/2011 1. PRODUCT AND COMPANY IDENTIFICATION Product name : Aluminium lithium hydride Product Number : 531502 Brand : Aldrich Supplier : Sigma-Aldrich 3050 Spruce Street SAINT LOUIS MO 63103 USA Telephone : +1 800-325-5832 Fax : +1 800-325-5052 Emergency Phone # (For : (314) 776-6555 both supplier and manufacturer) Preparation Information : Sigma-Aldrich Corporation Product Safety - Americas Region 1-800-521-8956 2. HAZARDS IDENTIFICATION Emergency Overview OSHA Hazards Water Reactive, Target Organ Effect, Toxic by ingestion, Corrosive Target Organs Kidney, Liver, Central nervous system GHS Classification Substances, which in contact with water, emit flammable gases (Category 1) Acute toxicity, Oral (Category 3) Skin corrosion (Category 1B) Serious eye damage (Category 1) GHS Label elements, including precautionary statements Pictogram Signal word Danger Hazard statement(s) H260 In contact with water releases flammable gases which may ignite spontaneously. H301 Toxic if swallowed. H314 Causes severe skin burns and eye damage. Precautionary statement(s) P223 Keep away from any possible contact with water, because of violent reaction and possible flash fire. P231 + P232 Handle under inert gas. Protect from moisture. P280 Wear protective gloves/ protective clothing/ eye protection/ face protection. P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P310 Immediately call a POISON CENTER or doctor/ physician. P370 + P378 In case of fire: Use dry sand, dry chemical or alcohol-resistant foam for extinction. P422 Store contents under inert gas. -
Azidocinnamates in Heterocyclic Synthesis
AZIDOCINNAMATES IN HETEROCYCLIC SYNTHESIS A THESIS PRESENTED BY DEIRDRE M.B. HICKEY B.SC. FOR THE DEGREE OF DOCTOR OF PHILOSOPHY j UNIVERSITY OF LONDON Hofmann Laboratory, Department of Chemistry, Imperial College of Science and Technology, London, SW7 2AY. October, 1982. To my parents, Paddy and Thevese 3 with love and gratitude. ACKNOWLEDGEMENTS I thank Professor C.W. Rees for his enthusiastic supervision during the course of this work and my co-supervisor, Dr. C.J. Moody for his constant help and encouragement. I am grateful to Mr. P. Sulsh for technical help, to Mr. D. Neuhaus and Mr. R. Sheppard for Bruker n.m.r. spectra, to Mr. K. Jones for the analytical service, to Mr. J. Bilton, Mrs. Lee, and Mr. N. Davies for the mass spectroscopy service, and to Mr. D. Everitt in the Stores. Miss Moira Shanahan has expertly typed this thesis and I am grateful for her patience and perserverance. I thank Mr. Michael Casey for proof-reading this thesis and for his help and friendship for many years. Dr. Brian Bell I thank for his help and continued support during the production of this thesis. My colleagues on the seventh floor I will warmly remember for their friendship and comradeship. Finally, grateful acknowledgement is made to the Department of Chemistry, Imperial College for a research assistantship. iv ABSTRACT The reactions of various types of nitrenes to give heterocyclic products is reviewed. A series of vinyl azides, mostly ort/zo-substituted azidocinnamates, was prepared and their decomposition reactions studied. The thermal decomposition of ortho-alkyl azidocinnamates gave 2,4- disubstituted indoles, 1,3-disubstituted isoquinolines, 1,3-disubstituted -1,2-dihydroisoquinolines, and enamines, the amounts of each varying with the ortho-group and the conditions used, iodine having a marked effect on the product ratios. -
DISSERTATION By
CYCLOTRON BOMBARDMENTS WITH HE3 a n d r 3 DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philisophy in the Graduate School of The Ohio State University By Thomas William Donaven, 3.S., M.A The Ohio State University 1952 Approved by Adviser ( fe/\J TABLE OF CONTENTS Cyclotron Bombardments with He^ or H3 Acknowledgements Page Introduction 1 Description of Apparatus 3 Method of Operation 13 Purification of He^ or 17 Results 20 Conclusions 30 References 32 Miscellaneous Photographs 36 Autobiography 1*0 i 918254 Acknowledgements It is with deep appreciation that I extend thanks to Professor M. L. Pool for his guidance in this work. Special thanks is also due to Dr. D. N. Kundu for his advice, help, and cooperation in this project. Acknowledgement is also made to Mr. Paul Weiler and Mr. Donald Moore of the cyclotron staff, and to the machine shop under Mr. Carl McWhirt, for their aid in completing this work. The support given me through fellowships by The Ohio State University Physics Department and by the Oak Ridge Institute of Nuclear Studies is gratefully acknowledged. ii INTRODUCTION The naturally occurring elements whose atoms are heavier than Bismuth, i.e. Po, At, Rn, Fr, Th, Pa, U, etc. are all radioactive. The remainder of the elements may be made radioactive by hitting them with high speed nuclei of other elements. The elements whose nuclei are normally used to create radioactivity are hydrogen and helium. In order to give a nucleus a high speed with the minimum of equipment, it is necessary to strip all of the electrons from the atom, leaving its bare nucleus to be accelerated. -
I N Dc International Nuclear Data Committee Iaea
International Atomic Energy Agency INDC(CCP)-335 Distr.: L I N DC INTERNATIONAL NUCLEAR DATA COMMITTEE TRANSLATION OF SELECTED PAPERS PUBLISHED IN YADERNYE KONSTANTY (NUCLEAR CONSTANTS 3, 1990) (Original Report in Russian was distributed as INDC(CCP)-328/G) Translated by A. Lorenz for the International Atomic Energy Agency July 1991 IAEA NUCLEAR DATA SECTION, WAG RAMERSTRASSE 5, A-1400 VIENNA INDC(CCP)-335 Distr.: L TRANSLATION OF SELECTED PAPERS PUBLISHED IN YADERNYE KONSTANTY (NUCLEAR CONSTANTS 3, 1990) (Original Report in Russian was distributed as INDC(CCP)-328/G) Translated by A. Lorenz for the International Atomic Energy Agency July 1991 Reproduced by the IAEA in Austria August 1991 91-03116 Contents The Total Neutron Cross-section and Resonance Parameters for the Even 58,60,62,64^ isotopes for Energies Ranging from 2eV to 8000eV (Pages 27-38 of Original) By L.L. Litvinskij, P.N. Vorona, V.G. Krivenko, V.A. Libtnan, A.V. Murzin, G.N. Novosselov, N.A. Trofimova, O.L. Tchervonnaya The 54Fe(n,a)51Cr Thermal Neutron Reaction Cross-section (Pages 39-43 of Original) By S.P. Makarov, G.A. Pik-Pitchak, Yu.F. Rodionov, V.V. Khmyzov, Yu.A. Yashin 19 Isotopic Dependence of Radiative Capture Cross-sections for 30 keV Neutrons (Pages 44-52 of Original) By Yu. N. Trof imov 25 Evaluation of Particle Emission Spectra for Isotopes of Chromium, Iron and Nickel for the BROND Data Library (Pages 53-66 of Original) By A.V. Zelenetskij , A.B. Pashchenko 33 Comparison of Measured and Calculated Cross-sections of a Large Number of Nuclides (Pages 67-79 of Original) By A.V. -
Chem 314 Preorganic Evaluation
Organic Reaction Guide Beauchamp 1 Chem 316 / Beauchamp Reactions Review Sheet Name SN2 Reactions - special features: biomolecular kinetics Rate = kSN2[RX][Nu ], single step concerted reaction, E2 is a competing reaction o o o o relative order of reactivity: CH3X > 1 RX > 2 RX >> 3 RX (based on steric hinderance, no SN2 at 3 RX) allylic & benzylic RX are very reactive, adjacent pi bonds help stabilize transition state and lower TS energy (Ea) o complete substitution at Cα (3 RX) or Cβ (neopentyl pattern) almost completely inhibits SN2 reactions vinyl & phenyl are very unreactive, bonds are stronger and poor backside approach leaving group ability: OTs = I > Br > Cl in neutral or basic conditions (just like E2, SN1 adn E1), and neutral molecule leaving groups are good from protonated, cationic intermediates in acid conditions, + + + + -OH2 , -ORH , -OR2 , -NR3 , etc. we will consider all anions, ammonia, amines, thiols and sulfides to be strong nucleophiles (favors SN2 and E2 reactions) in our course some electron pair donors are mainly nucleophiles (sulfur, azide, cyanide, carboxylates) and - + + - + - some are mainly bases (t-BuO K , Na H2N , Na H ) polar, aprotic solvents work best for SN2 reactions because nucleophiles are relatively unencombered for electron doantion (dimethyl sulofoxide = DMSO, dimethylformamide = DMF, acetonitrile = AN, acetone, etc.) in our course some electron pair donors are mainly nucleophiles (sulfur, azide, cyanide, carboxylates) and we will consider neutral solvent molecules such as water, alcohols and acids to be weak nucleophiles (favors SN1 and E1) stereoselectivity: 100% inversion of configuration from backside atack regioselectivity: reacts at carbon with leaving group, completely unambiguous chemoselectivity: N/A The following list is designed to emphasize SN2 reactions. -
Nickel Isotope Variations in Terrestrial Silicate Rocks and Geological Reference Materials Measured by MC-ICP-MS
09 Vol. 37 — N° 3 13 P.297 – 317 Nickel Isotope Variations in Terrestrial Silicate Rocks and Geological Reference Materials Measured by MC-ICP-MS Bleuenn Gueguen (1, 2)*,OlivierRouxel (1, 2), Emmanuel Ponzevera (2),AndreyBekker (3) and Yves Fouquet (2) (1) Institut Universitaire Europeen de la Mer, UMR 6538, Universite de Bretagne Occidentale, BP 80, F-29280, Plouzane, France (2) IFREMER, Centre de Brest, UniteG eosciences Marines, 29280, Plouzane, France (3) Department of Geological Sciences, University of Manitoba, Winnipeg, R3T 2N2, Canada * Corresponding author. e-mail: [email protected] Although initial studies have demonstrated the applica- Bien que les premieres etudes demontrent la pertinence bility of Ni isotopes for cosmochemistry and as a potential des isotopes du nickel en cosmochimie et en tant que biosignature, the Ni isotope composition of terrestrial signature biologique, la composition isotopique du nickel igneous and sedimentary rocks, and ore deposits remains des roches ignees et sedimentaires terrestres ainsi que poorly known. Our contribution is fourfold: (a) to detail an celle des dep ots^ de minerais est encore tres peu connue. analytical procedure for Ni isotope determination, (b) to Notre contribution s’organise en quatre axes, (a) detailler determine the Ni isotope composition of various geo- la procedure analytique pour la determination des logical reference materials, (c) to assess the isotope compositions isotopiques en nickel, (b) determiner la composition of the Bulk Silicate Earth relative to the Ni composition isotopique de materiaux geologiques de isotope reference material NIST SRM 986 and (d) to ref erence varies, (c) estimer la composition isotopique de report the range of mass-dependent Ni isotope fractio- la Terre Silicatee Globale (BSE) par rapport au standard nations in magmatic rocks and ore deposits.