Abstract
A selective hydrogenation of carbon-carbon double bond of α,β-unsaturated ketones are obtained when a mixture of limonene, α,β-unsaturated ketone and 10% Pd/C is refluxed with vigorous stirring for 15–45 min. The best results are obtained when a molar ratio limonene:α,β-unsaturated ketone of 3:1 and 4 molar % palladium/ketone are used. The stereoselectivity is similar to the results obtained when H 2 and Pd/C have been used in neutral solvent.
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