Enantiospecific synthesis of substituted 1-norbornanesulfonic acids and 1-norbornanesulfenic and sulfonic acid derivatives
作者:Antonio Garcı́a Martı́nez、Enrique Teso Vilar、Florencio Moreno Jiménez、Marı́a Garcı́a Amo
DOI:10.1016/s0957-4166(00)00122-1
日期:2000.5
homochiral 1-norbornanesulfenic and sulfonic acid derivatives 2–7, as well as the sulfonic acids 8, are easily synthesised starting from 2-methylene-1-norbornylthiotriflates 1. This new class of homochiral bridgehead thiosulfonates was prepared by us from naturally occurring (+)-camphor and (−)-fenchone. Nucleophilic substitution at the sulfenylsulfur atom is the key step for this synthetic strategy