Hydrosilylation catalyzed with Rh(PPh3)3Cl/ionic- liquid-functionalized SiO2
Ionic liquid-modified silica has been prepared by a one-pot reaction of activated silica, 3-chloropropyltriethoxysilane, and alkylimidazole or pyridine. It was found that the catalytic activity and β-adduct selectivity of the supported catalyst Rh(PPh3)3Cl/ionic-liquid-modified-SiO2 for the hydrosilylation reaction of alkenes with triethoxysilane was significantly improved. Furthermore, the catalyst system could be recovered easily.