Russian Chemical Bulletin

, 49:363 | Cite as

Generation and capture of alkylchlorosilanones

  • S. V. Basenko
  • M. G. Voronkov
  • I. A. Gebel
Organic Chemistry


Alkyltrichlorosilanes react with DMSO (molar ratio 1 : 1 0 °C) to give cyclic oligoalkylchlorosiloxanes of the general formula [R(Cl)SiO] n (where R=Me or Et;n=3–6). With an excess of alkyltrichlorosilane (2: 1), linear oligoalkylchlorosiloxanes Cl[R(Cl)SiO] m SiCl2R (where R=Me or Et;m=1–5) are also formed. In the presence of hexamethyldisiloxane (molar ratio Cl3SiR : DMSO: (Me3Si)2O=1:1:2, 20 °C), the reaction products are both cyclic and linear oligoalkyl(trimethylsilyloxy)siloxanes [R(Me3SiO)SiO] n (n=3–5) and Me3Si[OSi(OSiMe3)R] m OSiMe3 (m=1–3), respectively. The reaction of DMSO with trichloro(vinyl)silane and hexamethyldisiloxane occurs in a similar manner. A plausible scheme of formation of the final products via intermediate alkylchlorosilanones RClSi=O and alkyl(trimethylsilyloxy)silanones is discussed.

Key words

alkyltrichlorosilanes dimethyl sulfoxide chlorosilanones silanones oligosiloxanes 


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Copyright information

© Kluwer Academic/Plenum Publishers 2000

Authors and Affiliations

  • S. V. Basenko
    • 1
  • M. G. Voronkov
    • 1
  • I. A. Gebel
    • 1
  1. 1.Irkutsk Institute of ChemistrySiberian Branch of the Russian Academy of SciencesIrkutskRussian Federation

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