A PPh3 modified-chitosan supported Pd nanocatalyst for heterogeneous Suzuki-Miyaura cross coupling reactions

A PPh3 modified-chitosan support was synthesized by the acid-mediated addition reaction of the tris(4-vinylphenyl)phosphane ligand (3vPPh(3)) and chitosan (CS). The material was loaded with Pd(OAc)(2) to furnish a supported Pd catalyst (Pd/PPh3-CS), which was characterized by FT-IR, ICP-MS, TGA, XPS, SEM, TEM and N-2 adsorption-desorption analysis. The catalyst showed a high catalytic activity, wide substrate compatibility and good recyclability in heterogeneous Suzuki-Miyaura cross coupling reactions.