A Pd complex of a NNN pincer ligand supported on γ-Fe2O3@SiO2 as the first magnetically recoverable heterogeneous catalyst for C–P bond forming reactions

Abstract

A Pd complex of a NNN pincer ligand supported on γ-Fe₂O₃@SiO₂ as a new phosphine-free Pd catalyst was synthesized and characterized by different methods such as SEM, TEM, FT-IR, TGA, ICP, XRD, XPS and elemental analysis. The synthesized catalyst was successfully used as the first magnetically recoverable heterogeneous catalyst for the synthesis of arylphosphonates via C–P bond formation by a cross-coupling reaction of different electrophilic benzenes with phosphite esters under solvent-free conditions.