H. Pellissier et al., REGIOCHEMISTRY OF WACKER-TYPE OXIDATION OF VINYL GROUP IN THE PRESENCE OF NEIGHBORING OXYGEN FUNCTIONS, Tetrahedron letters, 35(35), 1994, pp. 6481-6484
Palladium (II) oxidation of (+/-)-17 alpha-vinyl-1,3,5(10)-estratriene
derivatives 1 bearing a lactonic bridge on the beta-face affords the
expected acetyl derivatives. In contrast, when the lactonic bridge or
a hydroxy group is present in the alpha-face (syn relationship), aldeh
ydes resulting of an anti-Markovnikov hydration are obtained in apprec
iate yields.