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Abstract: 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. [Copyright &y& Elsevier]

Abstract: Hydrosilylation of allyl esters with octahydridosilsesquioxane (T8H8) in the presence of platinum-based catalysts was studied. The effects of the catalysts and the reaction conditions on the conversion and the selectivity of the products were investigated. Karstedt''s catalyst with two equivalents of PPh3 was found to be a superior hydrosilylation catalyst in terms of conversion and selectivity, compared with other Pt catalysts examined. An octasilsesquioxane functionalized with epoxy substituents was synthesized using the optimized reaction system, which was converted to a thermosetting polymer and its properties were investigated. [Copyright &y& Elsevier]

By hydrosilylation of 1-O-allyl-2,3,4,6-tetra-O-acetyl-β-D-glucopyranose and 1-O-allyl-2,3,4,6-tetra-O-acetyl-β-D-galactopyranose with 1,3-bis(dimethylsilyl)-2,2,4,4-tetramethylcyclodisilazane in the presence of the catalyst Co2(CO)8, we have obtained 1,3-di[3-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxy)propyldimethylsilyl]-2,2,4,4-tetramethylcyclodisilazane and 1,3-di[3-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyloxy)propyldimethylsilyl]-2,2,4,4-tetramethylcyclodisilazane. By deacetylation, we obtained 1,3-di[3-(β-D-glucopyranosyloxy)propyldimethylsilyl]-2,2,4,4-tetramethylcyclodisilazane. [ABSTRACT FROM AUTHOR]