PREPARATION OF ESCITALOPRAM
    1.
    发明申请
    PREPARATION OF ESCITALOPRAM 审中-公开
    编制ESCITALOPRAM

    公开(公告)号:US20100249438A1

    公开(公告)日:2010-09-30

    申请号:US12749569

    申请日:2010-03-30

    IPC分类号: C07D307/79

    CPC分类号: C07D307/87

    摘要: A substantially pure (S)-4-[4-(dimethylamino)-1-(4′-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)benzonitrile intermediate for preparing escitalopram is prepared by:a) combining racemic (±)-4-[4-(dimethylamino)-1-(4′-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)benzonitrile with (−)-di-p-toluoyltartaric acid, in a solvent;b) separating a solid phase comprising a salt of (−)-di-p-toluyltartaric acid with (R)-4-[4-(dimethylamino)-1-(4′-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)benzonitrile enantiomer, and a liquid phase comprising a salt of (−)-di-p-toluoyltartaric acid with (S)-4-[4-(dimethylamino)-1-(4′-fluorophenyl)-1-hydroxy-butyl]-3-(hydroxymethyl)benzonitrile enantiomer;c) reacting the liquid phase with a base and isolating enantiomerically enriched (S)-4-[4-(dimethylamino)-1-(4′-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)benzonitrile enantiomer;d) combining enantiomerically enriched (S)-enantiomer obtained in c) with (+)-di-p-toluoyltartaric acid, in a solvent; ande) reacting a precipitate from d) with a base.

    摘要翻译: 制备用于制备依他普仑的基本上纯的(S)-4- [4-(二甲基氨基)-1-(4'-氟苯基)-1-羟基丁基] -3-(羟甲基)苄腈中间体是通过以下步骤制备的:a)将外消旋 )-4- [4-(二甲基氨基)-1-(4'-氟苯基)-1-羟基丁基] -3-(羟甲基)苄腈与( - ) - 二 - 对甲苯甲酰酒石酸在溶剂中; b)将( - ) - 二 - 对 - 甲苯基酒石酸盐与(R)-4- [4-(二甲基氨基)-1-(4'-氟苯基)-1-羟基丁基] -3- (羟甲基)苄腈对映异构体,以及包含( - ) - 二对甲苯甲酰酒石酸与(S)-4- [4-(二甲基氨基)-1-(4'-氟苯基)-1-羟基 - 丁基] -3-(羟甲基)苄腈对映异构体; c)使液相与碱反应并分离对映异构体富集的(S)-4- [4-(二甲基氨基)-1-(4'-氟苯基)-1-羟基丁基] -3-(羟甲基)苄腈对映异构体; d)将c)中得到的对映异构体富集的(S) - 对映体与(+) - 对 - 甲苯甲酰酒石酸在溶剂中组合; 和e)使来自d)的沉淀物与碱反应。