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Synthesis and properties of bifunctional decaorganylcyclohexasiloxanes

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Conclusions

  1. 1.

    Stepwise condensation of organyltrichlorosilanes with 1,3-dihydroxytetraorganyldisiloxanes affords 2,8-dichlorodecaorganylcyclohexasiloxanes, the dihydroxy derivatives of which have been separated into the cis and trans isomers.

  2. 2.

    All the cis-2,8-dihydroxydecaorganylcyclohexasiloxanes, irrespective of the substituants on the silicon atoms either in the diorganylsiloxane moiety or bonded to the functional group, undergo intramolecular cyclization to give decaorganylbicyclo[5.5.1]hexasiloxanes as a result of transannular interaction of the substituants at silicon atoms 2 and 8.

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Literature cited

  1. 1.

    N. N. Makarova, I. M. Petrova, and A. A. Zhdanov, Dokl. Akad. Nauk SSSR,262, 619 (1982).

  2. 2.

    N. N. Makarova, I. M. Petrova, Yu. K. Godovskii, B. D. Lavrukhin, and A. A. Zhdanov, Dokl. Akad. Nauk SSSR,269, 1369 (1983).

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    K. A. Andrianov, A. I. Chernyavskii, and N. N. Makarova, Izv. Akad. Nauk SSSR, Ser. Khim., 1835 (1979).

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    V. E. Shklover, Yu. T. Struchkov, N. N. Makarova, and A. A. Zhdanov, Cryst. Struct. Commun.,9, 1 (1980).

  8. 8.

    T. V. Timofeeva, N. N. Makarova, I. L. Dubchak, and Yu. T. Struchkov, Izv. Akad. Nauk SSSR, Ser. Khim., 1871 (1984).

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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1114–1121, May, 1985.

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Makarova, N.N., Lavrukhin, B.D., Timofeeva, T.V. et al. Synthesis and properties of bifunctional decaorganylcyclohexasiloxanes. Russ Chem Bull 34, 1017–1023 (1985). https://doi.org/10.1007/BF01142794

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Keywords

  • Silicon
  • Silicon Atom
  • Trans Isomer
  • Dihydroxy
  • Intramolecular Cyclization