Rh-Catalyzed Reactions of 3‑Diazoindolin-2-imines: Synthesis of Pyridoindoles and Tetrahydrofuropyrroloindoles
datasetposted on 18.09.2015, 00:00 by Chen Wang, Haojie Zhang, Bo Lang, Anni Ren, Ping Lu, Yanguang Wang
The rhodium-catalyzed reactions of 3-diazoindolin-2-imines with furans and dihydrofuran furnished 9H-pyrido[2,3-b]indoles and tetrahydrofuro[3′,2′:4,5]pyrrolo[2,3-b]indoles, respectively. A cascade reaction mechanism involving an α-imino rhodium carbene intermediate is proposed. The starting materials are readily available, and the procedure is facile and efficient.