Regio- and enantioselective hydrosilylation of 1-arylalkenes by use of palladium-MOP catalyst

Hydrosilylation of styrenes bearing β-substituents with trichlorosilane was catalyzed by a palladium complex (0.1 mol %) coordinated with (R)- 2-methoxy-2′-diphenylphosphino-1,1′-binaphthyl ((R)-MeO-MOP) to give high yields of optically active 1-aryl-1-silylalkanes (80–85% ee) as single regioisomers. The resulting silanes were readily converted into the corresponding optically active alcohols (80–99% yield).