Microwave‐Assisted Palladium‐catalyzed double C−H Activation: One‐pot Synthesis of Benzo[a]imidazo[5,1,2‐cd]indolizines from 2‐Phenylimidazo[1,2‐a]pyridines and 1,2‐Diiodobenzene

Abstract

A facile synthetic strategy has been established for the microwave‐assisted construction of two C−C bond via regioselective double arylation of imidazo[1,2‐a]pyridines with 1,2‐diiodobenzene by employing Pd(OAc)2 as a catalyst. The current protocol exhibited a simple, efficient and ligands free synthesis of 1‐phenylbenzo[a]imidazo[5,1,2‐cd]indolizine derivatives in good to excellent yields. This Pd‐catalyzed dual arylation provided a valuable tool for the discovery of fluorescent materials.