Chelating N-heterocyclic carbene ligands in palladium-catalyzed Heck-type reactions

摘要

A novel synthesis of palladium complexes with chelating N-heterocyclic carbene ligands is reported and direct proof is presented by X-ray diffraction. These catalyst precursors are efficiently applied in palladium-catalyzed Heck-, Suzuki-and alkyne coupling reactions, demonstrating the versatility of our ligand concept in homogeneous catalysis. (C) 1998 Elsevier Science S.A. All rights reserved. [References: 25]