Trichlorosilyl groups containing organochlorosilanes and their preparation methods by the double-silylation of olefins with trichlorosilane
申请人:KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
公开号:US20040082803A1
公开(公告)日:2004-04-29
The present invention provides organosilicon compounds containing two trichlorosilyl groups and their preparation methods. Organosilicon compounds of formula II are prepared by reacting linear chain or cyclic olefins of formula I with trichlorosilane in the presence of quaternary organophosphonium salt as a catalyst.
R
1
—HC═CH—R
2
(I)
1
In formulas I and II, R
1
and R
2
may be identical or different and represent a hydrogen atom, a linear or a cyclic C
1
-C
8
alkyl, a linear or a cyclic C
1
-C
8
alkenyl, benzyl, phenyl, a C
1
-C
8
alkyl substituted phenyl group, two functional groups between R
1
and R
2
may be covalently bonded to form a C
4
-C
8
ring with or without a carbon-carbon double bond.
By reacting 4-vinyl-1-cyclohexene with a hydrogenchlorosilane compound in the presence of a platinum catalyst to give a reaction solution containing a monosilyl compound, removing the residual 4-vinyl-1-cyclohexene and isomers thereof from the reaction solution, and reacting the monosilyl compound again with the hydrogenchlorosilane compound, an organic silicon compound in which the two double bonds in 4-vinyl-1-cyclohexene have been hydrosilylated is produced in high yields.