Synthesis of dibenzo[a,c]carbazoles from 2-(2-halophenyl)-indoles and iodobenzenes via palladium-catalyzed dual C-H functionalization

An efficient palladium-catalyzed strategy for the synthesis of dibenzo[a,c] carbazole derivatives has been developed. In the presence of Pd(OAc)(2), 2-(2-halophenyl)-indoles and iodobenzenes proceeded smoothly to obtain the corresponding dibenzo[a,c] carbazoles in moderate to good yields. This methodology constructs two new C-C bonds via a palladium-catalyzed dual C-H functionalization.