Substituent-Guided Palladium-Ene Reaction for the Synthesis of Carbazoles and Cyclopenta[b]indoles

An efficient palladium-catalyzed intramolecular Trost–Oppolzer type Alder-ene strategy was developed for the synthesis of carbazoles and cyclopenta­[b]­indoles from easily accessible­(3-allyl-1H-indol-2-yl)­methyl acetates. This strategy was extended for the synthesis of naphthalenes and dibenzobenzofurans as well. In addition, a short synthesis of antibacterial and antifungal natural product glycozoline and its analogues was also achieved.