Direct β-Arylation of Furans with Aryl Iodides Catalyzed by Dinuclear Palladium Complexes
摘要:
Dinuclear palladium complexes formed by a chelate-bridging ligand showed beta-selectivity in the direct arylation of furans with iodoarenes. In contrast, the arylation using PPh3, or bpy as ligands gave alpha-arylfurans as major products. The arylation can be applied to several furans bearing functional groups except electron-withdrawing groups.