Aerobic oxidative dehydrogenation of N-heterocycles catalyzed by cobalt porphyrin

作者:Zhou, Weiyou; Chen, Dongwei; Sun, Fu'an; Qian, Junfeng; He, Mingyang*; Chen, Qun
来源:Tetrahedron Letters, 2018, 59(10): 949-953.
DOI:10.1016/j.tetlet.2018.01.094

摘要

An efficient catalytic procedure has been developed for the aerobic oxidative dehydrogenation of N-heterocycles by cobalt porphyrin in the absence of any additives. The catalytic system could tolerate various 1,2,3,4-tetrahydroquinoline derivatives and some other N-heterocycles. The corresponding N-heteroaromatics could be obtained in 59-86% yields. The mechanism investigation suggested that the aerobic oxidative dehydrogenation might proceed with imine intermediate through radical paths.