申请人:BASF SE
公开号:US10301244B2
公开(公告)日:2019-05-28
The present invention relates to a process for the preparation of an optically active carbonyl compound by asymmetric hydrogenation of a prochiral α,β-unsaturated carbonyl compound with hydrogen in the presence of at least one optically active transition metal catalyst that is soluble in the reaction mixture and which has rhodium as catalytically active transition metal and a chiral, bidentate bisphosphine ligand, wherein the reaction mixture during the hydrogenation of the prochiral α,β-unsaturated carbonyl compound additionally comprises at least one compound of the general formula (I):
in which
R1, R2: are identical or different and are C6- to C10-aryl which is unsubstituted or carries one or more, e.g. 1, 2, 3, 4 or 5, substituents which are selected from C1- to C6-alkyl, C3- to C6-cycloalkyl, C6- to C10-aryl, C1- to C6-alkoxy and amino;
Z is a group CHR3R4 or aryl which is unsubstituted or carries one or more, e.g. 1, 2, 3, 4 or 5, substituents which are selected from C1- to C6-alkyl, C3- to C6-cycloalkyl, C6- to C10-aryl, C1- to C6-alkoxy and amino, wherein R3 and R4 are as defined in the claims and the description.
本发明涉及一种光学活性羰基化合物的制备工艺,该工艺是在至少一种光学活性过渡金属催化剂(可溶于反应混合物中)的存在下,以铑作为催化活性过渡金属和手性双叉双膦配体,通过氢气对亲手性α,β-不饱和羰基化合物进行不对称氢化,其中亲手性α,β-不饱和羰基化合物氢化过程中的反应混合物包括至少一种光学活性过渡金属催化剂(可溶于反应混合物中)和一种手性双叉双膦配体、其中手性 α,β-不饱和羰基化合物氢化过程中的反应混合物还包括至少一种通式 (I) 的化合物:
其中
R1、R2:相同或不同,是未被取代的 C6 至 C10 芳基,或带有一个或多个(如 1、2、3、4 或 5 个)选自 C1 至 C6 烷基、C3 至 C6 环烷基、C6 至 C10 芳基、C1 至 C6 烷氧基和氨基的取代基;
Z 是未被取代的基团 CHR3R4 或芳基,或带有一个或多个(如 1、2、3、4 或 5 个)选自 C1 至 C6 烷基、C3 至 C6 环烷基、C6 至 C10 芳基、C1 至 C6 烷氧基和氨基的取代基,其中 R3 和 R4 如权利要求和说明中所定义。