N-Heterocyclic Carbene-Catalyzed Chemoselective S–O Bond Cleavage of Benzenesulfonic Carbamate
作者:Zijun Wu、Jian Wang
DOI:10.1021/acs.orglett.8b03338
日期:2018.12.7
An unprecedented example of NHC-catalyzed chemoselective S–O bondcleavage of dinitrobenzenesulfonic carbamates is described. This protocol features several advantages, including mild reaction conditions, broad substrate scope, and operational simplicity, which allows it to be an attractive synthetic method for hydroxylamine synthesis. Notably, dinitrobenzenesulfonic carbamates not only work as “O”
An efficient amination reaction of 3-substituted benzofuran-2(3H)-ones promoted by cesium carbonate was developed. A putative mechanism involving a single-electron-transfer event was proposed, which represents a new reactivity for benzofuran-2(3H)-ones.