A process of preparing an optically active halohydrin compound characterized by comprising asymmetric hydrogen transfer reduction of an &agr;-haloketone compound in the presence of a group 9 transition metal compound having a substituted or unsubstituted cyclopentadienyl group and an optically active diamine compound. The asymmetric hydrogen transfer reduction is preferably conducted in the presence of a base.
一种制备光学活性卤代醇化合物的方法,其特征在于在存在具有取代或未取代
环戊二烯基基团和光学活性二胺化合物的9族过渡
金属化合物的情况下进行α-卤代酮化合物的不对称氢转移还原。最好在碱存在下进行不对称氢转移还原。