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.
本发明提供了含有两个三
氯硅基团的
有机硅化合物及其制备方法。通过在四元有机
磷盐存在下,将式I的线性链或环烯烃与三
氯硅烷反应,可以制备出式II的
有机硅化合物。在式I和式II中,R1和R2可以相同也可以不同,代表氢原子、线性或环状的C1-C8烷基、线性或环状的C1-C8烯基、苄基、苯基、一个C1-C8烷基取代的苯基团,R1和R2之间的两个功能基团可以共价键合形成一个C4-C8环,有或没有碳-碳双键。