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Several dicarbonyl compounds, e.g. the α‐keto aldehydes (I), the dialdehydes (III), and the diones (V), are treated with 2‐propanol and catalytic amounts of zirconocene or hafnocene dihydride, performing a Meerwein‐Ponndorf‐Verley‐type reduction to give selectively oxo alcohols such as (II), (IV), or (VI).

131ChemInform Abstract The cycloalkanones (I) are coupled with the aldehydes (II) or primary alcohols (IV) in the presence of a zirconocene complex and nickel dichloride to produce the unsaturated ketones (III) or (V). This reaction is applied to the synthesis of dihydrojasmone (VIIa). (Yields only partly given).