α′-acetoxy α,β-unsaturated cyclopentanone and cyclohexanone have been resolved into the corresponding enantiomericallyenriched α′-hydroxylated and acetoxylated compounds with 96–97% ee via PLE hydrolysis. Stereoselectivity in the palladium(II)-catalyzed reaction between the enantiomericallyenriched α′-acetoxylated compounds and diazomethane has been investigated. In the α′-acetoxylated cyclopentenone