Palladium‐Catalyzed Electrophilic Functionalization of Pyridine Derivatives through Phosphonium Salts
作者:Yuan‐Yuan Che、Yanni Yue、Ling‐Zhi Lin、Bingbing Pei、Xuezu Deng、Chao Feng
DOI:10.1002/anie.202006724
日期:2020.9.14
Herein, we report a highly efficient and practical method for pyridine‐derived heterobiaryl synthesis through palladium‐catalyzed electrophilic functionalization of easily available pyridine‐derived quaternary phosphonium salts. The nice generality of this reaction was goes beyond arylation, enabling facile incorporation of diverse carbon‐based fragments, including alkenyl, alkynyl, and also allyl
本文中,我们报告了一种通过钯催化的易得的吡啶衍生的季phospho盐的亲电官能团合成吡啶衍生的杂二芳基化合物的高效实用方法。该反应的通用性超出了芳基化的范围,从而可以轻松地将各种碳基片段(包括烯基,炔基以及烯丙基片段)掺入吡啶核中。值得注意的是,银盐添加剂被发现对于成功实现这种转化至关重要,并且还描述了其作为金属转移介质的关键作用,该介质可确保吡啶基向钯中间体的平稳转移。