PHOTOLYSIS OF ORGANOPOLYSILANES. THE REACTION OF SILYLENES WITH ALLYL ETHYL ETHER

Article abstract of DOI:10.1016/S0022-328X(00)98707-2

The reactions of photochemically generated dimethylsilylene, methylphenylsilylene, phenyl(trimethylsilyl)silylene, and mesityl(trimethylsilyl)silylene with allyl ethyl ether have been investigated.Irradiation of dodecamethylcyclohexasilane in the presence of allyl ethyl ether at 10 deg C afforded 2-ethoxy-1,1-dimethyl-1-silacyclopropane, while similar photolysis at 35 deg C gave allylethoxydimethylsilane.The reaction of methylphenylsilylene and phenyl(trimethylsilyl)silylene at 10 deg C gave the respective silacyclopropanes, but at high temperature afforded the corresponding rearranged allylic silane derivatives.The photolysis of tris(trimethylsilyl)mesitylsilane in the presence of allyl ethyl ether resulted in formation of thermally stable 2-ethoxymethyl-1-mesityl-1-trimethylsilyl-1-silacyclopropane which did not afford the rearranged allylethoxydisilane at 200 deg C.