2-p-Toluenesulfonyl(=tosyl)-1-alkenes were regioselectively prepared from 1-alkenes via iodosulfonization or sulfonylmercuration, respectively. Conversion of 1-tosyl-1-alkenes to the corresponding allylic sulfones, 1-tosyl-2-alkenes, was achieved by the treatment of their acetonitrile solution with DBU in high yield.
1 或 2-对
甲苯磺酰基(=
甲苯磺酰基)-1-烯烃分别通过
碘磺化或磺酰基
汞化从 1-烯烃区域选择性地制备。1-tosyl-1-烯烃转化为相应的烯丙基砜,1-tosyl-2-烯烃,是通过用
DBU 高产率处理它们的
乙腈溶液来实现的。