The hydroboration of some unsaturated organosilicon compounds

Article abstract of DOI:10.1021/ic50008a016

The hydroboration of allyltrimethylsilane resulted in the exclusive formation of tris-(γ-trimethylsilylpropyl)-borane. The direction of addition of the B-H linkages to the allylsilane was proven by oxidation of the borane obtained to give 3-trimethylsilylpropanol-1 as the only product alcohol. A possible explanation for this observed direction of addition is discussed. Trimethylvinylsilane was hydroborated and the product treated with methanol to produce a 59:41 mixture of (CH₃)₃SiCH(CH₃)B(OCH₃)₂ and (CH₃)₃SiCH₂CH₂B(OCH ₃)₂. This mixture was converted to a mixture of the corresponding dichloroboranes. Treatment of the latter with aniline and pyrolysis of the product resulted in B-tris-(trimethylsilylethyl)-N-triphenylborazine.