作者:Hyeon Kyu Lee、Jia Kim、Chwang Siek Pak
DOI:10.1016/s0040-4039(99)00141-0
日期:1999.3
Eschenmoser sulfur extrusion reaction is failed to produce vinylogous carbamate II from N-(t-Boc)pyrrolidine-2-thion I but, treatment of methyl bromozincacetate with N-(t-Boc)pyrrolidine-2-thion I afforded good yield of vinylogous carbamate II. This thio-Reformatsky reaction appeared to be sensitive to the structure of substrates i.e. ring size or N-protecting groups. (C) 1999 Elsevier Science Ltd. All rights reserved.