Abstract
Double bonds in some αβ-unsaturated ketones are reduced by propan-2-ol in the presence of soluble iridium–sulphoxide catalysts. Chalcone gives (2-benzoyl-1-phenylethyl-O)dichlorobis(dimethyl sulphoxide)iridium as a crystalline intermediate, which is converted into dihydrochalcone on treatment with acids.
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