Process for transition metal-catalyzed asymmetric hydrogenation of acrylic acid derivatives, and a novel catalyst system for asymmetric transition metal catalysis
    1.
    发明授权
    Process for transition metal-catalyzed asymmetric hydrogenation of acrylic acid derivatives, and a novel catalyst system for asymmetric transition metal catalysis 有权
    用于过渡金属催化的丙烯酸衍生物的不对称氢化方法,以及用于不对称过渡金属催化的新型催化剂体系

    公开(公告)号:US07473792B2

    公开(公告)日:2009-01-06

    申请号:US11666922

    申请日:2005-12-05

    IPC分类号: C07F15/00 B01J31/00 C07C57/02

    摘要: A process for transition metal-catalyzed, asymmetric hydrogenation of acrylic acid derivatives of the formula (I) in which R1 is H or an optionally substituted alkyl, aryl or heteroaryl radical, R2 is an optionally substituted alkyl, aryl or heteroaryl radical, and R3 is H or a C1-C6-alkyl radical, which comprises hydrogenating compounds of the formula (I), optionally in a solvent, in the presence of one or more hydrogen donors, using a catalyst system which comprises a transition metal from the group of ruthenium, rhodium and iridium and a combination of a chiral phosphorus ligand of the formula (II) in which Cn, together with the two oxygen atoms and the phosphorus atom, forms an optionally substituted ring having from 2 to 6 carbon atoms and R4 is an optionally substituted alkyl, aryl, alkoxy or aryloxy radical or NR5R6 where R5 and R6 may each independently be H or an optionally substituted alkyl, aryl, aralkyl or alkaryl radical, or, together with the nitrogen atom, may form a ring, and an achiral phosphine ligand of the formula (III) in which R is an optionally substituted alkyl or aryl radical, to the corresponding compounds of the formula (IV) in which R1, R2 and R3 are each as defined above, and also a novel catalyst system for asymmetric transition metal catalysis.

    摘要翻译: R 1为H或任选取代的烷基,芳基或杂芳基的式(I)的丙烯酸衍生物的过渡金属催化不对称氢化的方法,R 2为任选取代的烷基,芳基或杂芳基,R 3为 是H或C 1 -C 6烷基,其包括在一个或多个氢供体存在下,任选地在溶剂中使式(I)化合物氢化,使用包含过渡金属 钌,铑和铱以及式(II)的手性磷配体的组合,其中Cn与两个氧原子和磷原子一起形成任选取代的具有2至6个碳原子的环,R 4是 任选取代的烷基,芳基,烷氧基或芳氧基或NR5R6,其中R5和R6各自独立地为H或任选取代的烷基,芳基,芳烷基或烷芳基,或与氮原子一起形成 g和其中R是任选取代的烷基或芳基的式(III)的非手性膦配体与相应的式(IV)化合物反应,其中R 1,R 2和R 3各自如上所定义,以及 一种用于不对称过渡金属催化的新型催化剂体系。