Synergistic Effect of Alkaline-Earth Metal (Pyro) Phosphates and Aluminum Trichloride on the Hydrosilylation of Olefins

Phosphate and pyrophosphate can advance green chemistry as nontoxic and sustainable catalysts. This study presents the development of a novel series of solid composite catalysts, comprising AlCl 3 and alkaline-earth metal (pyro)phosphates. The efficacy of these catalysts in facilitating the hydrosilylation of olefins with hydrosilanes has been thoroughly examined. Adding aluminum chloride enhances the catalytic activity of calcium phosphate for the catalysis hydrosilylation reaction, enabling efficient conversion of various linear alkenes into corresponding adducts with excellent yields. Furthermore, this catalytic system exhibits remarkable stability, maintaining its activity over 15 cycles without significant decrease.