A Route to Annulated Indoles via a Palladium-Catalyzed Tandem Alkylation/Direct Arylation Reaction

Abstract
A norbornene-mediated palladium-catalyzed tandem alkylation/C−H functionalization sequence is described, in which an alkyl−aryl bond and a heteroaryl−aryl bond are formed in one pot. A variety of highly substituted six- and seven-membered ring annulated indoles were synthesized in good yields from bromoalkyl indoles and aryl iodides.