CAS: 814-98-2; 1,1,2,2-Tetramethyldisilane

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📜二甲基硅烷置于2-丁炔体系中,化学反应生成 1,1,2,2-四甲基乙硅烷
参考文献:Mercury-Sensitized Photolysis Of Me2Sih2 The Disproportionation Reactions Of The Me2Sih Radical
标题:Mercury-Sensitized Photolysis Of Me2Sih2 The Disproportionation Reactions Of The Me2Sih Radical
摘要:Me 2 Sih 2 的汞敏化光解第一步产生一个 Me 2 Hsi 自由基和一个 H 原子,量子产率为 1.me 2 Hsi 自由基会发生一个结合反应[k(2)]以及两种歧化反应,最终反应生成二甲基硅烷基[k(3)]和 1-甲基硅烷基[k(4)].测定的支化率如下:K(3)/[k(2)+k(3)+k(4)]=0.64 +/-0.10,K(4)/[k(2)+k(3)+k(4)]0.007.对于 Me 3 Si 自由基,还测定了歧化支化率,结果为 0.063.
DOI:10.1039/a605762D

专利信息

专利号:US-4289890-A
优先权日:1979-02-12
标 题:Synthesis of chloromethyldisilanes
发明人：GORDON ROY G
权利人:GORDON ROY G
摘要:1,2 Dichloro-1,1,2,2-tetramethyldisilane is synthesized in high yield and good purity starting from a crude mixture of chloromethyldisilanes formed as by-products in the manufacture of silicones. The new method uses less than half as much Grignard reagent as previous methods required. The synthesis can also be used to produce other haloalkyldisilanes such as chloropentamethyldisilane or 1,1,2 trichloro-1,2,2-trimethyldisilane.

专利号:US-5247044-A
优先权日:1989-09-01
标题:Synthetic method for the synthesis of silicon polyether copolymers
发明人：CRIVELLO JAMES V; FAN MINGXIN
权利人:GEN ELECTRIC
摘要:The present invention is based on the discovery that various metal catalysts will catalyze the ring opening polymerization of epoxides to yield polyethers. The present invention therefore provides a method of making a polymeric product by ring-opening polymerization of heterocyclic epoxide monomer including the steps of preparing a mixture comprised of a catalyst; a Si--H containing compound; and at least one compound which is a heterocyclic epoxide containing monomer; and reacting the mixture at a temperature effective to promote ring-opening polymerization of the at least one compound to produce a polymeric product, preferably at room temperature. n The present invention additionally provides for the silicone-polyether compositions created by this method.

专利号:US-4461908-A
优先权日:1982-12-17
标 题:Method for the preparation of methyl hydrogensilanes
发明人：TAKAMIZAWA MINORU; UMEMURA MITSUO; KOBAYASHI TAISHI
权利人:SHINETSU CHEMICAL CO
摘要:The invention provides a novel and efficient method for the preparation of methyl hydrogensilanes, e.g. dimethyl silane, 1,1,2,2-tetramethyl disilane and 1,1,2,2,3,3-hexamethyl trisilane, with large demand in the industry of silicones as an intermediate for the synthesis of other valuable organosilicon compounds such as methyl hydrogenchlorosilanes. The inventive method comprises pyrolysis of a methyl polysilane composed of at least 60% by moles of dimethylsilicon units, the balance being monomethyl- and trimethylsilicon units, at a temperature in the range from 350 DEG to 800 DEG C.