Photo‐induced Cobalt‐catalyzed Aerobic N−N Coupling of Diarylamines at Room Temperature

Abstract We report herein a photo induced Co‐catalyzed aerobic N−N coupling of diarylamines to form the corresponding tetraarylhydrazines. In this protocol, the N−N coupling reactions could be realized under mild conditions in the presence of Co(OAc) 2 ⋅ 4H 2 O and BPhen with the irradiation of light (390–395 nm).