申请人:NIPPON SODA CO., LTD.
公开号:EP1146037A1
公开(公告)日:2001-10-17
3 process for the preparation of optically active β-amino alcohols represented by the general formula (2): Ra-C*H(OH)-C*H(Rb)-Rc, [wherein Ra and Rc are each independently hydrogen, optionally substituted alkyl, or the like; Rb is one member selected from among groups represented by the following general formulae: (3) R1CO(R2)N-, (4) R1CO(R1'CO)N-, (5) R1CO(R1'SO2)N-. (6) R1SO2(R2)N-(wherein R1,R1'and R2 are each independently hydrogen, optionally substituted alkyl, or the like, or alternatively R1 and R2 or R1 and R1' may be united to fain a five- to eight-membered nitrogenous heterocycle); and C* is an asymmetric carbon atom], characterized by reacting a racemic α-aminocarbonyl compound represented by the general formula (1): Ra-CO-CH(Rb)-Rc (wherein Ra, Rb and Rc are each as defined above) with hydrogen or a hydrogen donor in the presence of an optically active transition metal compound and a base.
3 通式(2)所代表的光学活性 β-氨基醇的制备工艺:Ra-C*H(OH)-C*H(Rb)-Rc,[其中 Ra 和 Rc 各自独立地为氢、任选取代的烷基或类似物;Rb 是选自下列通式所代表的基团中的一个成员:(3) R1CO(R2)N-, (4) R1CO(R1'CO)N-, (5) R1CO(R1'SO2)N-。(6) R1SO2(R2)N-(其中 R1、R1'和 R2 各自独立地为氢、任选取代的烷基或类似物,或者 R1 和 R2 或 R1 和 R1'可结合成五至八元含氮杂环);以及 C* 为不对称碳原子],其特征在于使通式(1)代表的外消旋α-氨基羰基化合物反应:Ra-CO-CH(Rb)-Rc(其中 Ra、Rb 和 Rc 各定义如上)与氢或氢供体在光学活性过渡金属化合物和碱存在下反应。