Periodic mesoporous silica-immobilized palladium(II) complex as an effective and reusable catalyst for water-medium carbon-carbon coupling reactions

A novel Pd(II) organometallic catalyst with periodic ordered mesoporous structure was prepared by covalent-bonding Pd(II) complex on PPh2-funtionalized PMOs obtained via EISA method. The uniformly chelated ligands ensured high dispersion of active sites and the PMOs support enhanced the surface hydrophobicity, leading to the high catalytic efficiency in water-medium coupling reaction.