作者:Hanumanthu, Roshini、Weaver, Jimmie D.
DOI:10.1021/acs.orglett.4c01413
日期:——
we have employed a strategy of nucleophilic cooperative catalysis in which catalytic lutidine undergoes halide substitution, which decreases and levels the reduction potential. This allows a general set of photocatalytic conditions to transform a broad range of benzyl halides into radicals that can be used in the synthesis of more complex molecules, exemplified here by Giese coupling with electron-deficient
苄基是一类重要的中间体。使用可见光直接从各自的卤化物生成它们是一种理想的合成策略。与直接单电子还原(光或电)相关的主要障碍在于其高度可变且结构依赖的还原电位,这使得识别一组一般条件变得困难。在这里,我们采用了亲核协同催化策略,其中催化二甲基吡啶发生卤化物取代,从而降低并平衡还原电位。这使得一组通用的光催化条件能够将多种苄基卤转化为可用于合成更复杂分子的自由基,例如吉斯与缺电子烯烃的偶联。