Synthesis of 1,2-disubstituted benzimidazoles using an aza-Wittig-equivalent process
作者:Yuan Chen、Fanghui Xu、Zhihua Sun
DOI:10.1039/c7ra09010b
日期:——
A synthetic approach for 1,2-disubstituted benzimidazoles has been successfully designed based on effective C–N bond construction, which demonstrated mild reaction conditions and excellent yields. The method involves treating derivatives of o-phenylenediamine with tert-butanesulfoxide and NBS under acidic conditions, which undergoes an aza-Wittig-equivalent process to afford the desired products. Using
基于有效的C–N键结构,已成功设计了1,2-二取代苯并咪唑的合成方法,该方法显示出温和的反应条件和出色的收率。该方法包括在酸性条件下用叔丁烷亚砜和NBS处理邻苯二胺的衍生物,该产物经过氮杂-维蒂希当量法得到所需产物。使用此方法,已成功构建了一系列含有多个具有不同电子效应的官能团的苯并咪唑。