Addition of a stable dialkylsilylene to carbon-carbon unsaturated bonds

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The reactions of an isolable dialkylsilylene, 2,2,5,5- tetrakis(trimethylsilyl)silacyclopentan-1,1-diyl (1) with ethylene, (Z)-2-butene, acetylene, bis(trimethylsilyl)acetylene, and 2,3-dimethylbutadiene at room temperature gave the corresponding silacycles as isolable compounds. Because of the large steric hindrance, the reaction of 1 with (E)-2-butene gave a complex mixture, indicating no formation of the corresponding silirane. The reaction of 1 with 2,3-dimethylbutadiene afforded the corresponding [1 + 4] cycloadduct without contamination of the [1 + 2] cycloadduct. Stable C-unsubstituted silirane and silirene produced by the reactions of 1 with ethylene and acetylene were analyzed by X-ray crystallography.

Original languageEnglish
Pages (from-to)432-437
Number of pages6
JournalHeteroatom Chemistry
Issue number3-4
Publication statusPublished - 2011


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