ZnCl2 (5 mol%) is an efficient catalyst for the thiolysis of 1,2-epoxides by thiophenol in water at pH 4.0. A variety of β-hydroxy phenylsulfides were obtained in short reaction times and excellent yields. Starting from cyclohexene oxide (1), two one-pot multi-step procedures in sole water (thiolysis/oxidation with H2O2) have been realized, for the chemoselective synthesis of the corresponding β-hydroxysulfoxides 19 or for the related β-hydroxysulfone 20.
ZnCl2(5 mol%)是一种有效的催化剂,用于在pH 4.0的
水相中通过
硫苯醇对1,2-
环氧化物进行
硫解反应。在短反应时间内获得了多种β-羟基苯
硫醚,并且产率非常高。从
环己烯氧化物(1)出发,已经实现了在纯
水中进行的两步一锅法(
硫解/用
H2O2氧化),用于选择性合成相应的β-羟基亚砜19或相关的β-羟基磺酰20。