Base-free dehydrogenative coupling of enolizable carbonyl compounds with silanes
A dehydrogenative coupling between enolizable carbonyl compounds and equimolar amounts of triorganosilanes catalyzed by a tethered ruthenium complex with a Ru-S bond is reported. The complex is assumed to fulfill a dual role by activating the Si-H bond to release a silicon electrophile and by abstracting an α-proton from the intermediate silylcarboxonium ion, only liberating dihydrogen as the sole byproduct. Reaction rates are exceedingly high at room temperature with very low loadings of the ruthenium catalyst.
Koenigs, C. David F.,Klare, Hendrik F. T.,Ohki, Yasuhiro,Tatsumi, Kazuyuki,Oestreich, Martin
supporting information; experimental part
p. 2842 - 2845
(2012/08/07)
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