Efficient Synthesis of Taurine and Structurally Diverse Substituted Taurines from Aziridines
作者:Libo Hu、Hui Zhu、Da-Ming Du、Jiaxi Xu
DOI:10.1021/jo070470c
日期:2007.6.1
Taurine and substituted taurines were synthesized efficiently from aziridines via ring-opening reaction with thioacetic acid, oxidation with performic acid, and hydrolysis in hydrochloric acid. The current method shows more benefit in purification and efficiency in the preparation of taurine and structurally diverse 2-substituted, 2,2-disubstituted, and 1,2-, 2,2-, and 2,N-alkylene taurines.
An Expeditious Synthesis of 1-Substituted and Cyclic Taurines
作者:Jiaxi Xu、Jiaxing Huang、Fei Wang、Da-Ming Du
DOI:10.1055/s-2005-869994
日期:——
A series of 1-substituted taurines, including optically active taurines, were synthesized expeditiously from epoxides via episulfidation with potassium sulfocyanate, ring-opening with dibenzylamine, followed by oxidation with performic acid, and hydrogenolysis in the presence of palladium hydroxide on carbon powder. This method was also used for the synthesis of trans-cyclic taurines.
A Versatile Synthesis of Various Substituted Taurines from Vicinal Amino Alcohols and Aziridines
作者:Ning Chen、Weiyi Jia、Jiaxi Xu
DOI:10.1002/ejoc.200900759
日期:2009.11
Taurine and structurally diverse substituted taurines have been synthesized by peroxyformic acid oxidation of the thiazolidine-2-thione intermediates generated from vicinal amino alcohols or aziridines and carbon disulfide. Thestereochemistry and mechanisms of the reactions are disscussed. The method is a salt-free and versatile route, convenient in terms of purification, and can be used to synthesize
Guanidine-catalyzed enantioselective desymmetrization of meso-aziridines
作者:Yan Zhang、Choon Wee Kee、Richmond Lee、Xiao Fu、Julian Ying-Teck Soh、Esther Mun Foong Loh、Kuo-Wei Huang、Choon-Hong Tan
DOI:10.1039/c0cc05840h
日期:——
An amino-indanol derived chiral guanidine was developed as an efficient Brønsted base catalyst for the desymmetrization of meso-aziridines with both thiols and carbamodithioic acids as nucleophiles, which provided 1,2-difunctionalized ring-opened products in high yields and enantioselectivities.
Enantioselective zwitterionic ion-exchange material
申请人:UNIVERSITAET WIEN
公开号:US10265644B2
公开(公告)日:2019-04-23
An enantioselective zwitterionic ion-exchange material comprising a chiral selector component (SO) comprising at least one cation exchange group and at least one anion exchange group and a carrier, carrying said selector component, wherein
the chiral selector component comprises at least one chiral linker moiety to connect said ion exchange groups in a non-macrocyclic fashion, and
said chiral linker moiety contains at least one π-π interaction site.