Abstract
Palladium (II) oxidation of (±)-17α-vinyl-1,3,5(10)-estratriene derivatives 1 bearing a lactonic bridge on the β-face affords the expected acetyl derivatives. In contrast, when the lactonic bridge or a hydroxy group is present in the α-face (syn relationship), aldehydes resulting of an anti-Markovnikov hydration are obtained in appreciate yields.
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