中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (Z)-1-Brom-1-trimethylsilyl-1-penten | —— | C8H17BrSi | 221.212 |
Resinous compositions are prepared by polymerizing organo-silicon compounds of the general formula R-CC-Si(R1)3, wherein R represents a saturated alkyl radical and R1 represents a hydrocarbon radical free from olefinic or acetylenic unsaturation, in the presence of vinyl polymerization type catalysts, e.g. benzoyl peroxide. Copolymers may be prepared by polymerizing the above organo-silicon compounds with compounds such as styrene, butadiene, vinyl chloride, vinyl acetate, an acrylate or methacrylate or acrylonitrile.ALSO:The invention comprises organo-silicon compounds of the general formula R-C C-Si(R1)3, wherein R represents a saturated alkyl radical and R1 represents a hydrocarbon radical free from olefinic or acetylenic unsaturation, and the preparation thereof by reacting a Grignard reagent R-CC-Mg-X, where R has the above significance and X is a halogen, with an organohalogenosilane of the general formula (R1)3-Si-X1, wherein R1 has the above significance and X1 is a halogen. R and R1 may be the same or different and may represent methyl, ethyl, propyl, isopropyl, butyl and dodecyl radicals. R1 may also represent a cycloaliphatic radical, e.g. a cyclopentyl or cyclohexyl radical, an aryl radical, e.g. a phenyl, diphenyl or naphthyl radical, an alkaryl radical, e.g. a tolyl, xylyl or ethylphenyl radical, or an aralkyl radical, e.g. a benzyl, phenylethyl or phenylbutyl radical. X and X1 may represent chlorine, bromine or fluorine, X being preferably bromine and X1 being preferably chlorine. A suitable solvent for the reaction is ether. In the examples 1-hexynyltrimethylsilane, 1-pentynyltrimethylsilane and 1-pentynyltriphenylsilane are prepared. The following additional compounds are referred to: phenylethynyl trimethylsilane, 1-propynyl triethylsilane, 1-butyryl trimethylsilane, 1-pentynyl trioctylsilane and 1-hexynyl dimethylphenylsilane. The organosilicon compounds of the above general formula may be hydrogenated to give olefinic or paraffinic derivatives, halogenated with a halogen such as chlorine, fluorine or bromine whereby all or part of the unsatisfied bonds of the triple bond may be saturated with halogen, or submitted to reactions whereby hydrogen halide, organic acids, alcohols, acid chlorides, ammonia, amines, hydrogen sulphide, mercaptans, hydrogen cyanide or organic nitriles are added across the triple bond. Silicon compounds, particularly silicon compounds containing a silicon bonded hydrogen and a silicon bonded halogen, e.g. silicochloroform or methyldichlorosilane, may also be added across the triple bond to give additional silicon substitution. 1 - Pentenyltrimethylsilane is prepared by hydrogenating 1-pentynyltrimethylsilane in a pressure vessel. Organoethynyl magnesium halides of the general formula R-C C-MgX, wherein R represents a saturated alkyl radical, are prepared by reacting ethyl magnesium bromide and an acetylene compound of the formula RC CH.