- Hydrosilylation of Allyl Ethers in the Presence of Platinum(II) Immobilized on Polymethylene Sulfide
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The reactions of allyl ethyl, allyl butyl, allyl glycidyl, allyl benzyl, and allyl phenyl ethers with 1,1,3,3-tetra-methyldisiloxane in the presence of platinum(II) immobilized on polymethylene sulfide have been studied.
- Il’ina, M. A.,de Vekki, D. A.
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- Copper-catalyzed formic acid synthesis from CO2 with hydrosilanes and H2O
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A copper-catalyzed formic acid synthesis from CO2 with hydrosilanes has been accomplished. The Cu(OAc)2?H 2O-1,2-bis(diphenylphosphino)benzene system is highly effective for the formic acid synthesis under 1 atm of CO2. The TON value approached 8100 in 6 h. The reaction pathway was revealed by in situ NMR analysis and isotopic experiments.
- Motokura, Ken,Kashiwame, Daiki,Miyaji, Akimitsu,Baba, Toshihide
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experimental part
p. 2642 - 2645
(2012/08/13)
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- Effect of catalyst structure on the reaction of α-methylstyrene with 1,1,3,3-tetramethyldisiloxane
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Reaction of α-methylstyrene with 1,1,3,3-tetramethyldisiloxane in the presence of the complexes of platinum(II), palladium(II) and rhodium(I) is explored. It is established that in the presence of platinum catalyst predominantly occurs hydrosilylation of α-methylstyrene leading to formation of β-adduct, on palladium catalysts proceeds reduction of α-methylstyrene, on rhodium catalysts both the processes take place. In the reaction mixture proceeds disproportion and dehydrocondensation of 1,1,3,3-tetramethyldisiloxane that leads to formation of long chain linear and cyclic siloxanes of general formula HMe2Si(OSiMe2) n H and (-OSiMe2-)m (n = 2-6, m = 3-7), respectively. Platinum catalysts promotes formation of linear siloxanes, while both rhodium and palladium catalysts afford linear and cyclic siloxanes as well. Structure of intermediate metallocomplexes is studied.
- De Vekki,Skvortsov
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body text
p. 762 - 777
(2009/09/26)
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- Composition for separating mixtures
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Therefore, there is provided herein in one specific embodiment a composition comprising: a) at least one silicone surfactant, and where silicone of silicone surfactant (a) has the general structure of: [in-line-formulae]Ma1Mb2Dc1Dd2Te1Tf2Qg; [/in-line-formulae][in-line-formulae]and, [/in-line-formulae][in-line-formulae]2≦(a+b+c+d+e+f+g)≦100; and, [/in-line-formulae] b) a mixture comprising an aqueous phase, a solid filler phase and optionally an oil phase that is substantially insoluble in said aqueous phase.
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Page/Page column 17
(2008/06/13)
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- PROCESS FOR MAKING SI-H FUNCTIONAL SILOXANE OLIGOMER
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The present invention relates to a method of making a Si-H functional siloxane oligomer from the reaction between silicon hydride compounds and cyclic siloxane oligomer in the presence of a Lewis acid that is capable of interacting with the hydrogen of th
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Page/Page column 8-9
(2008/06/13)
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- New syntheses with magnesium hydride part 2: Pathways to new complex hydrides and aluminium hydride
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The reaction between autocatalytically prepared magnesium hydride (Tego Magnan) and aluminium halides in ethers generates a new class of reducing agents, i.e. magnesium aluminium hydridohalides. By choosing dioxane-1,4 as solvent a route to an aluminium hydride dioxane complex is opened. The new reducing agents show outstanding selectivity especially in the field of organosilicones, combined with a maximum of safety in their application.
- Knott, Wilfried
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p. 629 - 634
(2007/10/03)
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