Metal-Free Hydropyridylation of Thioester-Activated Alkenes via Electroreductive Radical Coupling
作者:Hehuan Xu、Jiayu Liu、Feiyun Nie、Xiaowei Zhao、Zhiyong Jiang
DOI:10.1021/acs.joc.1c01526
日期:2021.11.19
cathode surface, protonation, and radical cross-coupling process, resulting in a variety of valuable pyridine variants, which contain a tertiary and even a quaternary carbon at the α-position of pyridines, in high yields. The employment of thioesters to the conjugated alkenes enables no requirement of catalyst and high temperature, representing a highly sustainable synthetic method.
已经开发了用 4-氰基吡啶对硫酯活化的烯烃进行电化学加氢吡啶化。该反应经历了阴极表面上两种底物的串联电还原、质子化和自由基交叉偶联过程,产生了多种有价值的吡啶变体,在吡啶的 α 位含有叔碳甚至季碳,在高产。在共轭烯烃中使用硫酯使得不需要催化剂和高温,代表了一种高度可持续的合成方法。