Method for the preparation of organosilicon compounds

Details Method for the preparation of organosilicon compounds Method for the preparation of organosilicon compounds

C - Chemistry, Metallurgy

07

F

C07F 7/18 (2006.01) C07F 7/08 (2006.01) C08G 77/48 (2006.01) C08G 77/50 (2006.01)

Patent

CA 2291205

A method for preparing organosilicon compounds comprises: 1) converting the Si-bonded alkoxy in an Si-bonded alkoxy-functional organosilicon compound to the diorganosilyl group by reacting the Si-bonded alkoxy-functional organosilicon compound with organodisiloxane with the general formula HR2Si-O-SiR2H, where R is a monovalent hydrocarbyl group of 1 to 10 carbon atoms, in alcohol-containing acidic aqueous solution; and subsequently 2) treating with a sulfonic acid catalyst and carboxylic acid. This method is able to convert all the alkoxy groups in the alkoxy-functional organosilicon compound to diorganosilyl. This method can be used to synthesize a high-purity carbosiloxane dendrimer having a narrow molecular weight distribution.

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