Abstract

A new catalytic route for the synthesis of unsaturated organosilicon compounds with vinylic functionality based on cross-metathesis of vinyltrialkoxy- and vinyltris(trimethylsiloxy)-silanes with allyl esters of carboxylic acids catalyzed by ruthenium carbenes (Grubbs catalysts): [Cl 2(PCy 3) 2Ru(CHPh)] ( I), [Cl 2(PCy) 3(1,3-dimesityl-4,5-dihydroimidazol-2-ylidene)Ru(CHPh)] ( II) is reported. The efficient reaction can be extended to alkyl esters of unsaturated acids, e.g., of methyl 3-butenoate.

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