Rh(iii)-catalyzed sequential C-H activation and annulation: access to N-fused heterocycles from arylazoles and α-diazocarbonyl compoundsElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ra03262e

A mild and simple protocol has been developed for the synthesis of N-fused heterocycles from arylazoles and α-diazocarbonyl compounds via Rh( iii )-catalyzed sequential C-H activation and annulation. Three kinds of N-fused heterocycles derived from arylpyrazoles, arylbenzimidazoles and aryl 1,2,4-triazole were successfully obtained. The reactivity of the other four arylazole analogues was also investigated. Valuable N-fused heterocycles were successfully obtained via Rh( iii )-catalyzed sequential C-H activation and annulation.