Process for producing keto nitrile derivative
    1.
    发明授权
    Process for producing keto nitrile derivative 失效
    制备酮腈衍生物的方法

    公开(公告)号:US5688985A

    公开(公告)日:1997-11-18

    申请号:US590177

    申请日:1996-01-23

    CPC分类号: C07C221/00 C07C253/30

    摘要: A process for producing a (4S)-4-(N,N-dibenzyl)amino-5-phenyl-3-oxo-pentanenitrile derivative which comprises reacting a (2S)-2-(N,N-dibenzyl)aminophenylalanine ester derivative with acetonitrile in the presence of a lithium compound or a magnesium compound is disclosed, and a process for producing a (2S)-2-(N,N-dibenzyl)amino-5-amino-1,6-diphenyl-4-hexen-3-one derivative which comprises adding a benzylmagnesium halide or a benzyllithium to a reaction solution containing the (4S)-4-(N,N-dibenzyl)amino-5-phenyl-3-oxo-pentanenitrile derivative and reacting the derivative with the benzylmagnesium halide or the benzyllithium is also disclosed. According to these processes, optically pure (4S)-4-(N,N-dibenzyl)amino-5-phenyl-3-oxo-pentanenitrile derivative and (2S)-2-(N,N-dibenzyl)amino-5-amino-1,6-diphenyl-4-hexen-3-one derivative can be produced in a good yield on an industrial scale.

    摘要翻译: 一种(4S)-4-(N,N-二苄基)氨基-5-苯基-3-氧代 - 戊腈衍生物的制备方法,其包括使(2S)-2-(N,N-二苄基)氨基苯丙氨酸酯衍生物 公开了在锂化合物或镁化合物存在下的乙腈,以及(2S)-2-(N,N-二苄基)氨基-5-氨基-1,6-二苯基-4-己烯的制备方法 -3-(N,N-二苄基)氨基-5-苯基-3-氧代 - 戊腈衍生物的反应溶液中加入苄基镁卤化物或苄基锂,并将该衍生物与 还公开了苄基镁卤化物或苄基锂。 根据这些方法,将光学纯的(4S)-4-(N,N-二苄基)氨基-5-苯基-3-氧代 - 戊腈衍生物和(2S)-2-(N,N-二苄基)氨基-5- 氨基-1,6-二苯基-4-己烯-3-酮衍生物可以以工业规模以良好的产率制备。

    Process for producing optically active alcohols
    3.
    发明授权
    Process for producing optically active alcohols 失效
    光学活性醇的制造方法

    公开(公告)号:US4962242A

    公开(公告)日:1990-10-09

    申请号:US66164

    申请日:1987-06-25

    IPC分类号: C07C29/17

    CPC分类号: C07C29/172 C07B2200/07

    摘要: A process for producing an optically active alcohol represented by formula (I): ##STR1## wherein R.sub.1 is an alkyl group having from 2 to 11 carbon atoms, an alkenyl group having from 3 to 11 carbon atoms, an alkadienyl group having from 6 to 11 carbon atoms, a cyclohexyl group, an cyclohexylmethyl group, or a cyclohexylethyl group, provided that the olefin in the alkenyl group or alkadienyl group is not conjugated to the olefin at the 2-position thereof; and * means an asymmetric carbon atom,is disclosed, comprising subjecting an olefinic alcohol represented by formula (II): ##STR2## wherein R.sub.1 is the same as defined above to asymmetric hydrogenation in the presence of, as a catalyst, a ruthenium-optically active phosphine complex.According to the process of the invention, the desired optically active alcohols which are useful not only as intermediates for the manufacture of perfumes and vitamin E but also as liquid crystal materials can be produced with high optical purities.

    摘要翻译: 一种制备由式(I)表示的光学活性醇的方法:其中R1是具有2至11个碳原子的烷基,具有3至11个碳原子的链烯基,具有 环己基,环己基甲基或环己基乙基,条件是烯基或链二烯基中的烯烃在2-位没有与烯烃共轭; 和*表示不对称碳原子,包括使式(II)表示的烯属醇:其中R 1与上述定义相同,在作为催化剂的存在下进行不对称氢化 钌 - 光学活性膦配合物。 根据本发明的方法,不仅可用于制造香料和维生素E,而且用作液晶材料的中间体所需的光学活性醇可以以高光学纯度生产。