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.
Light-promoted photocatalyst-free and redox-neutral hydrosulfonylation of unactivated alkenes using sulfinic acid
作者:Yibo Song、Cheng Li、Xueyuan Hu、Hongdie Zhang、Yujian Mao、Xiachang Wang、Chen Wang、Lihong Hu、Jianming Yan
DOI:10.1039/d4gc00440j
日期:——
A hydrosulfonylation reaction of unactivated alkenes with sulfinicacids was realized under light irradiation. This reaction features photocatalyst- and additive-free conditions. A diverse set of unactivated alkenes can be transformed into alkyl-substituted sulfones with good yields and anti-Markovnikov regioselectivity. The present protocol was amenable to gram-scale synthesis, as well as late-stage