Oxazaborolidine-Mediated Reduction of Prochiral 2-Alkylidene Cycloalkanones.

Abstract Asymmetric reduction of enones 1a-g using either a stoichiometric or catalytic amount of oxazaborolidine 3 proceeds to give the synthetically useful allylic cycloalkanols 2a-g in 83–96% e.e.