Use of acylphosphonates for the synthesis of α-chlorinated carboxylic and α,α′-dichloro dicarboxylic acids and their derivatives
作者:Christian V Stevens、Bart Vanderhoydonck
DOI:10.1016/s0040-4020(01)00407-0
日期:2001.5
alpha -Chloro acylphosphonates and alpha,alpha'-dichloro bisacylphosphonates were prepared in situ by chlorination of acylphosphonates and bisacylphosphonates, respectively, using sulfuryl chloride. Subsequently, they were cleaved to the corresponding alpha -chlorinated or alpha,alpha'-dichlorinated (di)carboxylic acids with a hydrogen peroxide-sodium bicarbonate system. Performing the cleavage with an alcohol or an amine yielded the corresponding alpha -chlorinated esters and alpha -chlorinated amides, respectively. (C) 2001 Elsevier Science Ltd. All rights reserved.