Abstract:Decarboxylative C–H functionalization reactions are highly attractive methods for forging carbon‐carbon bonds considering their inherent step‐ and atom‐economical features and the pervasiveness of carboxylic acids and C–H bonds. An ideal approach to achieve these dehydrogenative transformations is through hydrogen evolution without using any chemical oxidants. However, effective coupling of decarboxylative carbon‐carbon bond formation with proton reduction remains an unsolved challenge. Herein, we report an electrophotocatalytic approach that merges organic electrochemistry with photocatalysis to achieve efficient direct decarboxylative C–H alkylation and carbamoylation of heteroaromatic compounds through hydrogen evolution. The electrophotocatalytic method, which combines the high efficiency and selectivity of photocatalysis in promoting decarboxylation and electrochemistry in effecting proton reduction, allows efficient coupling of a wide range of heteroaromatic bases with a variety of carboxylic acids and oxamic acids. Advantageously, this method is scalable to decagram scale and applicable to the late‐stage functionalization of drug molecules.
Source:https://pcss.xmu.edu.cn/en/info/1095/1880.htm
Full-Link:https://onlinelibrary.wiley.com/doi/10.1002/anie.202002900
