申请人:Johnson Matthey PLC
公开号:EP1849792A1
公开(公告)日:2007-10-31
A chiral catalyst suitable for asymmetric hydrogenation reactions is described comprising the reaction product of a ruthenium compound, a chiral bis(phosphine) and a chiral diamine of formula (I)
in which R1, R2, R3 or R4 are independently hydrogen, a saturated or unsaturated alkyl, or cycloalkyl group, an aryl group, a urethane or sulphonyl group, R1 and R2 may be linked or R3 and R4 may be linked so as to form a 4 to 7-membered ring structure incorporating the nitrogen atom, at least one of R1, R2, R3 or R4 is hydrogen; A is a linking group comprising one or two substituted or unsubstituted carbon atoms; R5, R6, R7 or R8 are independently hydrogen, a saturated or unsaturated alkyl or cycloalkyl group, or an aryl group, wherein one or more of R5, R6 R7 or R8 forms one or more ring structures with linking group A, and the chiral bis(phosphine) is selected from the group consisting of BINAP, DUPHOS, BIPHEP, TMBTP, BITIANAP, BIBFUP, bppm, CARBOPHOS, JOSIPHOS, BPE, DEGPHOS, DIOP, BIPNOR, PHANEPHOS, SELKE AND BINAPAN.
描述了一种适用于不对称氢化反应的手性催化剂,该催化剂由钌化合物、手性双膦和手性二胺的反应产物组成,其式为(I)
其中 R1、R2、R3 或 R4 独立地为氢、饱和或不饱和烷基或环烷基、芳基、氨基甲酸酯或磺酰基,R1 和 R2 可连接或 R3 和 R4 可连接以形成包含氮原子的 4 至 7 元环结构,R1、R2、R3 或 R4 中至少有一个为氢;A 为包含一个或两个取代或未取代碳原子的连接基团;R5、R6、R7 或 R8 独立地为氢、饱和或不饱和烷基或环烷基或芳基,其中一个或多个 R5、R6、R7 或 R8 与连接基团 A 形成一个或多个环结构、手性双膦选自 BINAP、DUPHOS、BIPHEP、TMBTP、BITIANAP、BIBFUP、bppm、CARBOPHOS、JOSIPHOS、BPE、DEGPHOS、DIOP、BIPNOR、PHANEPHOS、SELKE 和 BINAPAN 所组成的组。