Method for controlling hydrosilylation in a reaction mixture

Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing

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556453, 556456, 556460, 556461, 556462, C07F 708

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active

053591119

ABSTRACT:
This invention discloses a method of controlling hydrosilylations in a reaction mixture by controlling the solution concentration of oxygen in the reaction mixture, relative to any platinum present in the reaction mixture. This invention further discloses a method for controlling isomerization in linear or branched alkenyl compounds having at least 4 carbon atoms during a hydrosilylation reaction by introducing a controlled amount of oxygen into the alkenyl compounds during the hydrosilylation. This invention further discloses a method for producing dicycloalkylsubstituted silanes by reacting a halo-or alkoxy-silane with a unsaturated cycloalkenyl compound in the presence of oxygen and a hydrosilylation catalyst.

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Harrod, et al, Hydrosilation Catalyzed by Group VII Complexes, Org. Synth. Met. Carbonyls (1977)(2) 673-6704.
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Organosilicon Chemistry. Part 24, Homogeneous Rhodium-catalyzed Hydrosilation of Alkenes and Alkynes: The role of Oxygen or Hydroperoxides By: Hugh M. Dickers et al. (1985).
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