Electrooxidative Rhodium-Catalyzed C−H/C−H Activation: Electricity as Oxidant for Cross-Dehydrogenative Alkenylation
作者:Youai Qiu、Wei-Jun Kong、Julia Struwe、Nicolas Sauermann、Torben Rogge、Alexej Scheremetjew、Lutz Ackermann
DOI:10.1002/anie.201803342
日期:2018.5.14
Rhodium(III) catalysis has enabled a plethora of oxidative C−H functionalizations, which predominantly employ stoichiometric amounts of toxic and/or expensive metal oxidants. In contrast, we herein describe the first electrochemical rhodium‐catalyzed C−H activation that avoids hazardous chemical oxidants. Environmentally benign twofold C−H/C−H functionalizations were accomplished with weakly coordinating
铑(III)催化已实现大量的氧化CHH功能化,主要使用化学计量的有毒和/或昂贵的金属氧化剂。相反,我们在此描述了避免有害化学氧化剂的第一个电化学铑催化的CH活化。利用弱配位的苯甲酸和苯甲酰胺,利用电作为末端氧化剂,并生成H 2作为唯一的副产物,可以实现对环境无害的CH-H / CH官能化。