A process of preparing an optically active halohydrin compound characterized by comprising asymmetric hydrogen transfer reduction of an α-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化合物的工艺,其特征在于包括在具有取代或未取代
环戊二烯基团的第9族过渡
金属化合物和光学活性二胺化合物存在下,对α-卤代酮化合物进行不对称氢转移还原。不对称氢转移还原最好在碱存在下进行。