Palladium-Mediated Bis-Arylation of Inactivated and Activated Arenes
摘要:
A simple synthetic protocol has been developed for the bis-arylation of unactivated and activated arenes by the implementation of a palladium-catalyzed intramolecular cyclization strategy. The activated arenes give either linearly fused or angularly fused bis-cyclized product depending upon the substitutent present on the nitrogen atom, whereas inactivated arenes give only linearly fused product. The reaction has been carried out in two steps under ligand-free conditions.