Abstract

Palladium(II) oxidation of (±)-17α-vinyl-1,3,5(10)-gonatriene 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 on the α-face (syn relationship), aldehydes resulting from an anti-Markovnikov hydroxypalladation are obtained in appreciable yields.

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