Addition of Thiols to Isocyanates Catalyzed by Simple Rare-Earth-Metal Amides: Synthesis of <i>S</i>-Alkyl Thiocarbamates and Dithiocarbamates
作者:Chengrong Lu、Lijuan Hu、Bei Zhao、Yingming Yao
DOI:10.1021/acs.organomet.9b00147
日期:2019.5.13
Simple additions of thiols to isocyanates/isothiocyanates under mild conditions led to the efficient preparation of various S-alkyl thiocarbamates and dithiocarbamates, respectively. The lanthanum complex La[N(SiMe3)2]3 was found to be active to give thiocarbamates and dithiocarbamates in medium to excellent yields with a good group tolerance. A plausible mechanism of the catalytic transformation was
A CONVENIENT, ONE-POT SYNTHESIS OF THIOCARBAMATES USING<i>BIS</i>(TRICHLOROMETHYL) CARBONATE
作者:W. K. Su、J. P. Zhang、X. R. Liang
DOI:10.1080/00304940609356001
日期:2006.8
and of amines were required. Despite of the numerous routes, most methods involve unstable reagents, multi-step procedures, harsh reaction conditions, expensive catalyst or complex materials. Base on these premises, we now report a mild and convenient onepot procedure for the synthesis of thiocarbamates using bis(trichloromethy1) carbonate (BTC) . BTC is well known as an important equivalent for phosgene