AN ACTIVE AND STABLE HYDROSILYLATION CATALYST: A SILICA SUPPORTED POLY-γ-MERCAPTOPROPYLSILOXANE-PLATINUM COMPLEX

Article abstract of DOI:10.1016/0022-328X(83)80241-1

A silica-supported poly-γ-mercaptopropylsiloxane-platinum complex was prepared and used as hydrosilylation catalyst with 1-hexene and acetylene.When it was used as the catalyst for addition of triethoxysilane to 1-hexene at 80 deg C or room temperature, the product was n-hexyltriethoxysilane only, and the catalyst could be reused over twenty times (turnover numbers achieved were about 10.000) without any appreciable loss in the catalytic activity.The addition of triethoxysilane to acetylene by this catalyst at 80 deg C or room temperature under an atmospheric pressure gave vinyltriethoxysilane and bis(triethoxysilyl)ethane in good yields.