CAS: 534-18-9; Sodium Carbonotrithioate

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📜Sodium Tetrathiocarbonate 在 Aso2(1-)体系中,获得 Sodium Trithiocarbonate
参考文献:Danilov,S.; Grad,N. M.; Vorob'Eva,A. F.,Zhurnal Obshchei Khimii,1949,Vol. 19,P. 1257-1289
标题:Danilov,S.; Grad,N. M.; Vorob'Eva,A. F.,Zhurnal Obshchei Khimii,1949,Vol. 19,P. 1257-1289

专利信息

专利号:US-5087759-A
优先权日:1989-02-08
标题:Synthesis of vicinal alkanedithiols
发明人：VALLEE YANNICK; LABAT YVES
权利人:ELF AQUITAINE
摘要:The invention relates to the manufacture of vicinal alkanedithiols from the corresponding alkylene trithiocarbonates. n The method according to the invention consists in treating alkylene trithiocarbonate with an alkaline sulfide, followed by acidification of the reaction medium. n The method is particularly well-suited for the synthesis of ethanedithiol from ethylene trithiocarbonate.

专利号:US-6906171-B2
优先权日:1999-07-19
标题:Process for the deprotection of protected thiols
发明人：CUTHBERTSON ALAN
权利人:AMERSHAM HEALTH AS
摘要:The synthesis of peptides comprising disulphide bridges is challenging since it is difficult to ensure that the correct cysteine residues combine to form the desired disulphide bridges. The present invention describes novel protection techniques useful in the preparation of peptides. Described is a process for the deprotection of an Acm-, MBzl- and/or tBu-protected thiol which comprises reacting said protected thiol with an acid in the presence of an oxidising agent at a temperature sufficient to effect deprotection and generation of disulphide bonds.

专利号:US-6369158-B1
优先权日:1999-12-22
标 题:Dibenzyltrithiocarbonate molecular weight regulator for emulsion polymerization
发明人：SENYEK MICHAEL LESLIE; KULIG JOSEPH JOHN; PARKER DANE KENTON
权利人:GOODYEAR TIRE & RUBBER
摘要:Mercaptans are normally used as chain transfer agents in emulsion polymerizations. The mercaptans used in commercial applications are typically complex mixtures of hundreds of similar compounds having boiling points within a narrow range. The chain transfer activity of different mercaptans with such mixtures can vary substantially. To further complicate the situation, the distribution of various mercaptans can also vary substantially between lots of material obtained from commercial sources. Thus, consistent molecular weight control is typically difficult to attain in free radical emulsion polymerizations. This invention is based upon the unexpected discovery that dibenzyltrithiocarbonate will act as a pure compound to effectively and consistently control molecular weight in free radical emulsion polymerizations. The polydispersity of polymers made using dibenzyltrithiocarbonate as a molecular weight regulator is similar to that obtained using conventional mercaptan systems. This invention more specifically discloses a process for controlling the molecular weight of a polymer synthesized by free radical emulsion polymerization that comprises polymerizing at least one monomer by free radical polymerization in an aqueous emulsion in the presence of dibenzyltrithiocarbonate. For instance, dibenzyltrithiocarbonate can be used as a molecular weight regulator in the synthesis of styrene-butadiene rubber by emulsion polymerization. Accordingly, this invention further discloses a process for synthesizing styrene-butadiene rubber (SBR) that comprises copolymerizing styrene monomer and 1,3-butadiene monomer by free radical polymerization in an aqueous emulsion in the presence of dibenzyltrithiocarbonate. The use of dibenzyltrithiocarbonate is inherently less odorous than the use of mercaptans.

专利号:US-12180228-B2
优先权日:2019-06-05
标题:Compounds, conjugates, and compositions of epipolythiodiketopiperazines and polythiodiketopiperazines and uses thereof
发明人：MOVASSAGHI MOHAMMAD; OLSSON CHASE ROBERT; SCOTT TONY Z; CHEAH JAIME; PAYETTE JOSHUA NATHANIEL
权利人:MASSACHUSETTS INST TECHNOLOGY
摘要:The present disclosure provides, e.g., compounds, compositions, kits, methods of synthesis, and methods of use, involving epipolythiodiketopiperazines and polythiodiketopiperazines.

专利号:US-4018820-A
优先权日:1970-07-09
标题 :Chemical synthesis
发明人：FRIED JOSEF
权利人:UNIV CHICAGO
摘要:This invention relates to pharmacologically active compounds of the formula: ##STR1## wherein Z is trans-CH=CH, C.tbd.C; or CH 2 -CH 2 ; n M is H or lower alkyl; n n is an integer of from 2 to 5; n X is alkyl; n W is H or OR, wherein R is H, acyl, or alkyl; and n Each Y is H, OH or alkoxy; n And to novel intermediates and processes useful in the production thereof.

专利号:US-4175201-A
优先权日:1973-05-18
标 题 :Chemical synthesis
发明人：FRIED JOSEF
权利人:CHICAGO UNIVERSITY
摘要:This invention relates to pharmacologically active compounds of the formula: ##STR1## wherein Z is trans--CHâ•?CH, C.tbd.C; or CH 2 --CH 2 ; n M is H or lower alkyl; n n is an integer of from 2 to 5; n X is alkyl; n W is H or OR, wherein R is H, acyl, or alkyl; n each Y is H, OH or alkoxy; n and to novel intermediates and processes useful in the production thereof.