of electron-deficient alkenes with disilanes in acetonitrile gave silylated alkanes in high yields. The photosilylation occurred in a highly regioselective manner at the position β to the electron-withdrawing groups of the alkenes. With asymmetrically substituted disilanes and polysilanes, silyl groups bearing more bulky substituents were preferentially introduced to the alkenes. The photoreactions were
Photolysis of aryl-substituted disilanes in the presence of dimethyl sulfoxide
作者:Hiroshige Okinoshima、William P. Weber
DOI:10.1016/s0022-328x(00)90392-9
日期:1978.4
The photolysis of aryl-substituted disilanes in the presence of dimethyl sulfoxide has been studied. The products are found to be disiloxanes, aryl-substituted silanes, dimethylsilanone [(CH3)2Si=O], and dimethyl sulfide. Possible mechanisms for these reactions are discussed.
已经研究了在二甲亚砜存在下芳基取代的乙硅烷的光解作用。发现产物为二硅氧烷,芳基取代的硅烷,二甲基硅酮[(CH 3)2 Si = O]和二甲基硫。讨论了这些反应的可能机制。
Silicon–Carbon Unsaturated Compounds. XVI. Photorearrangement of an Adduct Derived from Reaction of a Silicon–Carbon Unsaturated Compound with<i>t</i>-Butyl Alcohol
Photolysis of pentamethylphenyldisilane in the presence of t-butyl alcohol gave a mixture of adducts which were readily oxidized to 1-(t-butoxydimethylsilyl)-2-(trimethylsilyl)benzene by oxygen. Photolysis of p-tolylpentamethyldisilane in the presence of t-butyl alcohol afforded 4-(t-butoxydimethylsilyl)-1-methyl-5-trimethylsilyl-1,3-cyclohexadiene (4) as a primary photoproduct. The UV-irradiation