Efficient synthesis of 1,2-benzisothiazoles from o-haloarylamidines and elemental sulfur via N–S/C–S bond formation under transition-metal-free conditions
Efficient synthesis of 1,2-benzisothiazoles from o-haloarylamidines and elemental sulfur via N–S/C–S bond formation under transition-metal-free conditions
Electrochemical Synthesis of Benzimidazoles via Dehydrogenative Cyclization of Amidines
作者:Huai‐Bo Zhao、Jin‐Liang Zhuang、Hai‐Chao Xu
DOI:10.1002/cssc.202100254
日期:2021.4.9
sustainable methodologies for the synthesis of N‐heterocycles is a constant focus of organic synthesis. Herein an electrochemical method is reported for the synthesis of benzimidazoles through dehydrogenative cyclization of easily available N‐aryl amidines. The reactions were conducted under simple constant current conditions in an undivided cell without need for catalysts, chemical oxidants, or additives, and