Preparation of a PEG-Supported Ligand as Highly Stable Palladium Catalyst and Its Efficient Recyclability in the Heck Reaction

摘要

A reagent of NNN ligands immobilized on PEG has been prepared and coordinated to Pd(OAc)2 to provide a highly efficient and recyclable catalysis system for the Heck reaction.The reaction works very well with this catalysis system,and no palladium black is observed during the reaction.The reagent and palladium can be recycled easily and do not show significant activity decay after being reused 10 times.