Mild and efficient rhodium-catalyzed deoxygenation of ketones to alkanes
Abstract
A new and simple method for the deoxygenation of ketones to alkanes is presented. Most substrates are reduced under mild conditions by triethylsilane in the presence of catalytic amounts of [Rh(-Cl)(CO)2]2. This system selectively provides the methylene hydrocarbons in good to excellent yields starting from acetophenones and diaryl ketones. A rapid examination of the reaction pathway suggests that the ketone is first converted in alcohol which then undergoes hydrogenolysis to give the alkane.
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