Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
The Selective Halogenation of Methylhydropolysiloxanes : Syntheses of Methylhalopolysiloxanes and Their Derivatives
Minoru SakiyamaYukinori NishizawaRokuro Okawara
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1965 Volume 38 Issue 12 Pages 2182-2186

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Abstract

Bromine was utilized in the presence of stoichiometric amount of pyridine to brominate silanic hydrogen of methylhydropolysiloxanes. Methylbromopolysiloxanes thus obtained and methylchloropolysiloxanes prepared from photo-chlorination of methylhydropolysiloxanes were hydrolyzed with or without methylchlorosilanes to yield new methylhydroxypolysiloxanes and branched methylpoly siloxanes. Preparation of methylhydrocyclopentasiloxanes was also reported.

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