Synthesis, Structure, and Reactivity of a η3-1-Hydroxyallyl Complex: Protonation of an α,β-Unsaturated Carbonyl Compound Bound to Palladium(0) and Platinum(0)

The direct addition of a proton to a carbonyl oxygen in an eta2-enone complex of palladium and platinum led to the quantitative formation of eta3-1-hydroxyallyl complexes of palladium and platinum, of which X-ray diffraction analysis showed typical eta3-allyl structure.