Whereas photolysis of acylsilanes in carbon tetrachloride has been shown to generate silyl radicals which yield chlorosilanes exclusively, and photolyses in alcohols yield siloxycarbenes which yield "mixed acetal" insertion products, it is shown that photolysis of acylsilanes in non-polar, non-halogenated solvents such as cyclohexane give complex mixtures of products which result primarily from the attack of silyl radicals on the carbonyl oxygen of an acylsilane, followed by conventional disproportionation or recombination reactions. Under some circumstances silyl radicals add to carbon–carbon double bonds. The structures of the products formed and the mechanism of their formation are described.
在碳四氯化物中,酰硅烷的光解已被证明会产生硅基自由基,其仅生成氯硅烷;而在醇中的光解会产生硅氧卡宾,从而生成“混合缩醛”插入产物。结果表明,在非极性、非卤代溶剂(如环己烷)中,酰硅烷的光解会产生复杂的产物混合物,主要是由硅基自由基对酰硅烷的羰基氧发起攻击,随后进行传统的不均化或重组反应。在某些情况下,硅基自由基会加成到碳-碳双键上。描述了所形成产物的结构和形成机制。