Ir-catalyzed hydrosilylation reaction of allyl acetate with octakis(dimethylsiloxy)octasilsesquioxane and related hydrosilanes

Hydrosilylation reaction of allyl acetate (AA) with octakis(dimethylsiloxy)octasilsesquioxane [(HSiMe2O)8(SiO1.5)8] was efficiently catalyzed by chloro(1,5-cyclooctadiene)iridium(I) dimer [Ir(μ-Cl)(COD)]2. The effects of the catalyst amounts and the reaction conditions on the conversion and the product selectivity were investigated. [Ir(μ-Cl)(COD)]2 catalyst was also applied to the hydrosilylation reaction of AA with other hydrosilanes such as pentamethyldisiloxane, 1,1,3,3-tetramethyldisiloxane, octahydridosilsesquioxane, triethoxysilane and tris(trimethylsiloxy)silane in order to compare their structure–reactivity relationship.