在两份200毫升二氯甲烷中分别溶解62.0克(1.0摩尔)的甲硫醚和160克(1.0摩尔)的溴。将甲硫醚溶液置于冰浴中冷却,然后在搅拌下滴加溴溶液,历时30分钟。滴加开始时即有二甲基锍盐的橘黄色晶体析出。经过抽滤、用己烷洗涤并在真空下干燥后,得到180克(收率81%)产物,熔点为80℃。此产物在避光条件下可稳定保存数周而不变质。
β-Haloalkoxysulfonium ions generated by the reaction of electrogenerated Br+ and I+ ions stabilized by dimethyl sulfoxide (DMSO) reacted with sodium hydroxide and sodium methoxide to give the corresponding halohydrins and epoxides, respectively, whereas the treatment with triethylamine gave α-halocarbonyl compounds.