- Study of Karstedt's Catalyst for Hydrosilylation of a Wide Variety of Functionalized Alkenes with Triethoxysilane and Trimethoxysilane
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The hydrosilylation is one of the most important methods for the synthesis of organosilicon compounds. Karstedt's catalyst [Ptn(H2C=CHSiMe2OSiMe2CH=CH2)m] is a kind of platinum catalyst which is widely used in the hydrosilylation. In this paper, we studied the catalytic activity of Karstedt's catalyst for the hydrogenation of olefins and especially aminated alkenes with trimethoxysilane and triethoxysilane, and demonstrated the excellent performance in terms of the yield and selectivity.
- Pan, Zhenhuan,Liu, Minglun,Zheng, Chaoyue,Gao, Deqing,Huang, Wei
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supporting information
p. 1227 - 1230
(2017/09/02)
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- Cleavage of cyclic organosilanes in the preparation of aminofunctional organoalkoxysilanes
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An aminofunctional organoalkoxysilane of formula I R2N—(CH2)y—Si(OR1)3?nR2n ??(I), wherein the R groups bonded to nitrogen are identical or different and each individual R group is hydrogen, an alkyl radical having from 1 to 4 carbon atoms, an aryl radical or an arylalkyl radical, R1 is an alkyl radical having from 1 to 8 carbon atoms or an aryl radical, R2 is an alkyl radical having from 1 to 8 carbon atoms or an aryl radical, y is 2, 3 or 4 and n is 0, 1 or 2, is prepared by a process comprising: reacting a chlorofunctional organoalkoxysilane of formula II Cl—(CH2)y—Si(OR1)3?nR2n ??(II), wherein R1, R2, y and n are as defined above, with ammonia or an organic amine of formula III HNR2 ??(III), wherein the two R groups are identical or different and each is defined as described above; separating organic amine hydrochloride or ammonium chloride by-product which is formed in the reaction; distilling the resulting crude product, thereby preparing an aminofunctional organoalkoxysilane or the product fraction of an aminofunctional organoalkoxysilane; and treating the aminofunctional organoalkoxysilane or the product fraction of an aminofunctional organoalkoxysilane with an alcohol.
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- Reactive silicone hair setting compositions
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Reactive silicone hair setting compositions composed of isopropanol solutions containing at least one aminoalkylalkoxysilane and a titanate ester. Optional ingredients include hair conditioners and tetraalkoxysilanes. The compositions provide high set holding levels at high humidities.
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- Azido-silane compositions
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Azido-containing silane compositions of matter useful as coupling agents in the production of polymer composite articles.
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- Azido-silane compositions
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Azido-containing silane compositions of matter useful as coupling agents in the production of polymer composite articles.
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