Mjsm. Moreno et al., SYNTHESIS OF SILYL ENOL AND SILYL DIENOL ETHERS OF 20-OXOSTEROIDS - THE EFFECT OF BETA-SUBSTITUENTS, Chemistry Letters, (6), 1997, pp. 529-530
efficient method to obtain regioselectively the title compounds is bet
a-substituents on the generation of beta-substituted silyl enol ethers
made feasible for the first time the isolation and identification of
the products resulting from the unstable thermodynamic silyl enol ethe
r.