Catalyst- and additive-free chemoselective reduction of sulfoxides into sulfides using B2(OH)4 as a deoxygenative agent
作者:Jixia Fan、Yifan Du、Rongrong Zhao、Qixing Liu、Haifeng Zhou
DOI:10.1016/j.tet.2023.133411
日期:2023.6
An operationally simple and practical method for the reduction of sulfoxides into sulfides using tetrahydroxydiboron [B2(OH)4] as a deoxygenative agent in the absence of catalyst and additive is described. A wide range of diaryl-, dialkyl- and aryl/alkyl-sulfoxides was successfully converted into corresponding sulfides in 92–99% yields. The applicability and practicability were demonstrated by 36 examples
描述了一种在没有催化剂和添加剂的情况下使用四羟基二硼 [B 2 (OH) 4 ] 作为脱氧剂将亚砜还原为硫化物的操作简单实用的方法。多种二芳基亚砜、二烷基亚砜和芳基/烷基亚砜成功转化为相应的硫化物,收率为 92-99%。通过36个实例和克级合成证明了其适用性和实用性。该工作拓展了B 2 (OH) 4从芳环、羰基、烯烃、炔烃、亚胺、硝基化合物、卤化物到亚砜的还原反应的应用领域。