Synthetic pathways to disilylmethane, H3SiCH2SiH3, and methyldisilane, CH3SiH2SiH3

Joachim Zech, Hubert Schmidbaur

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Disilylmethane is available in a four‐step synthesis starting with phenylsilane. This is converted into chlorophenylsilane by HCl/AlCl3. The reaction of PhSiH2Cl and dibromomethane with magnesium in tetrahydrofuran affords bis(phenylsilyl)‐methane, which yields bis(bromosilyl)methane by treatment with anhydrous hydrogen bromide. (BrH2Si)2CH2 is converted into disilylmethane by reduction with LiAlH4 in a two‐phase system using a phase‐transfer catalyst. ‐ Methyldisilane is available by alkylation of a monohalodisilane, XSi2H5 (X  Cl, Br), with methyllithium in a high‐boiling ether or by silylation of bromomethylsilane with silylpotassium. Due to secondary silylation reactions the overall yields of methyldisilane are low in all cases.

Original languageEnglish
Pages (from-to)2087-2091
Number of pages5
JournalChemische Berichte
Volume123
Issue number11
DOIs
StatePublished - Nov 1990
Externally publishedYes

Keywords

  • Disilylmethane
  • Methyldisilane
  • Silanes
  • Silicon carbide, hydrogenated, amorphous (a‐SiC:H)

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