928-65-4Relevant articles and documents
PROCESS FOR THE STEPWISE SYNTHESIS OF SILAHYDROCARBONS
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Page/Page column 63, (2021/12/08)
The invention relates to a process for the stepwise synthesis of silahydrocarbons bearing up to four different organyl substituents at the silicon atom, wherein the process includes at least one step a) of producing a bifunctional hydridochlorosilane by a redistribution reaction, selective chlorination of hydridosilanes with an ether/HCI reagent, or by selective chlorination of hydridosilanes with SiCI4, at least one step b) of submitting a bifunctional hydridochloromonosilane to a hydrosilylation reaction, at least one step c) of hydrogenation of a chloromonosilane, and a step d) in which a silahydrocarbon compound is obtained in a hydrosilylation reaction.
Silicon-hydrogen addition reaction (by machine translation)
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Paragraph 0064; 0065, (2018/04/21)
The invention relates to the field of organic chemistry, in order to solve the addition reaction catalyst with hydrogen in the presence of the problem, the invention provides a method for addition reaction, in order to olefin and three b oxygen radical hydrogen silicane as raw materials, in order to b [(1 - mPEG - 3 - alkyl 2 - diphenyl [...] halide) rhodium chloride] as the catalyst, heating 50 - 90 °C stirring for 4 - 6 hours, filtration, vacuum distillation fraction of, hydrogen addition product is obtained. This method of mild reaction conditions, security, high reaction conversion rate, β addition product selectivity is strong, it is convenient to separate the products and the catalyst, the catalyst can be recycled. (by machine translation)
Thermal hydrosilylation of olefin with hydrosilane. Preparative and mechanistic aspects
Jung, Dong Euy,Han, Joon Soo,Yoo, Bok Ryul
experimental part, p. 3687 - 3692 (2011/11/29)
The reaction of trichlorosilane (1a) at 250 °C with cycloalkenes, such as cyclopentene (2a), cyclohexene (2b), cycloheptene (2c), and cyclooctene (2d), gave cycloalkyltrichlorosilanes [CnH2n-1SiCl3: n = 5 (3a), 6 (3b), 7 (3c), 8 (3d)] within 6 h in excellent yields (97-98%), but the similar reactions using methyldichlorosilane (1b) instead of 1a required a longer reaction time of 40 h and afforded cycloalkyl(methyl)dichlorosilanes [CnH2n-1SiMeCl2: n = 5 (3e), 6 (3f), 7 (3g), 8 (3h)] in 88-92% yields with 4-8% recovery of reactant 2. In large (2, 0.29 mol)-scale preparations, the reactions of 2a and 2b with 1a (0.58 mol) under the same condition gave 3a and 3b in 95% and 94% isolated yields, respectively. The relative reactivity of four hydrosilanes [HSiCl3-mMem: m = 0-3] in the reaction with 2a indicates that as the number of chlorine-substituent(s) on the silicon increases the rate of the reaction decreases in the following order: n = 3 > 2 > 1 ? 0. In the reaction with 1a, the relative reactivity of four cycloalkenes (ring size = 5-8) decreases in the following order: 2d > 2a > 2c > 2b. Meanwhile linear alkenes like 1-hexene undergo two reactions of self-isomerization and hydrosilylation with hydrosilane to give a mixture of the three isomers (1-, 2-, and 3-silylated hexanes). In this reaction, the reactivity of the terminal 1-hexene is higher than the internal 2- and 3-hexene. The redistribution of hydrosilane 1 and the polymerization of olefin 2 occurred rarely under the thermal reaction condition.
