P. Renouf et al., ASYMMETRIC HYDROLYSIS OF PRO-CHIRAL 3,3-DISUBSTITUTED 2,4-DIACETOXYCYCLOHEXA-1,4-DIENES, Journal of the Chemical Society. Perkin transactions. I, (11), 1997, pp. 1739-1745
Asymmetric enzymatic hydrolysis of pro-chiral 3,3-disubstituted 2,4-di
acetoxycyclohexa-1,4-dienes 2 affords in high yields optically pure 2,
2-disubstituted 3-acetoxycyclohex-3-enones 1 (>98% ee). Under mild con
ditions Candida cylindracea lipase (enzyme/substrate ratio = 2%) hydro
lyses specifically the pro-S enol ester function of the pro-chiral sta
rting material 2.