Direct Assembly of Benzo[a] carbazole-5-carboxylates via a Diels-Alder Reaction with Arynes and 3-Alkenylindoles

摘要

A concise and direct synthetic strategy for the construction of benzo[a] carbazole-5-carboxylates has been disclosed via the Diels-Alder reaction of arynes and 3-alkenylindoles. The reaction is highly selective and affords the benzo[a] carbazole-5-carboxylates in good-to-excellent yields.