Palladium(II)-Phosphine Complexes Supported on Magnetic Nanoparticles: Filtration-Free, Recyclable Catalysts for Suzuki-Miyaura Cross-Coupling Reactions

摘要

An organic-inorganic hybrid heterogeneous nanocatalyst system was synthesized by covalent grafting a palladium dichloride complex of the type (L)2PdCl2 (L = trimethoxysilyl-functionalized triphe-nylphosphine) on silica-coated magnetic nanoparticles. It is a highly active and recyclable catalyst for the Suzuki-Miyaura cross-coupling reaction. The new catalyst can easily be separated from the reac-tion mixture by applying an external magnetic field and can be recycled many times without any loss of activity.