PROCESS FOR THE MANUFACTURE OF MEMANTINE AND INTERMEDIATE PRODUCT.
    4.
    发明申请
    PROCESS FOR THE MANUFACTURE OF MEMANTINE AND INTERMEDIATE PRODUCT. 有权
    制造和中间产品的过程。

    公开(公告)号:US20110082317A1

    公开(公告)日:2011-04-07

    申请号:US12736198

    申请日:2009-03-19

    IPC分类号: C07C209/62 C07C231/12

    摘要: The present invention relates to a process for manufacturing N-Formyl-1-amino-3,5-dimethyladamantane, an intermediate product in the overall process of producing 1-Amino-3,5-dimethyladamantane hydrochloride (Memantine). Therein, the process comprises the following steps: (a) reacting 1,3-dimethyladamantane with an acid mixture comprising concentrated sulfuric acid and concentrated nitric acid, wherein 1 to 6 volume parts of sulfuric acid (measured in ml) are used per weight part of 1,3-dimethyladamantane (measured in g); (b) reacting the solution from step (a) with an amount of formamide varying from 1 to 5 molar equivalents per mole of deprotonated 1,3-dimethyladamantane from step (a) to obtain N-Formyl-1-amino-3,5-dimethyladamantane. In step (b), the molar ratio of total acid, i.e. the molar amount of sulfuric acid and the molar amount of nitric acid taken together versus the molar amount of formamide is at least 1.5 and that the temperature is at least 50° C. The present invention also relates to the overall process of manufacturing Memantine from 1,3-dimethyladamantane by means of hydrolyzing the intermediate NFORM.

    摘要翻译: 本发明涉及N-甲酰基-1-氨基-3,5-二甲基金刚烷的制备方法,该方法是制备1-氨基-3,5-二甲基金刚烷盐酸盐(美金刚)的总体方法中的中间产物。 其中,该方法包括以下步骤:(a)使1,3-二甲基金刚烷与包含浓硫酸和浓硝酸的酸混合物反应,其中每重量份使用1至6体积份硫酸(以ml计) 的1,3-二甲基金刚烷(以g计); (b)使来自步骤(a)的溶液与从步骤(a)中每摩尔脱质子化的1,3-二甲基金刚烷的1至5摩尔当量变化的甲酰胺反应得到N-甲酰基-1-氨基-3,5 二甲基金刚烷 在步骤(b)中,总酸的摩尔比,即硫酸的摩尔量和硝酸的摩尔量与甲酰胺的摩尔量的摩尔比至少为1.5,温度至少为50℃。 本发明还涉及通过水解中间体NFORM从1,3-二甲基金刚烷制造美金刚的整个方法。

    PREPARATION OF NALMEFENE HYDROCHLORIDE FROM NALTREXONE
    6.
    发明申请
    PREPARATION OF NALMEFENE HYDROCHLORIDE FROM NALTREXONE 有权
    从NALTREXONE制备NALMEFENE HYDROCHLORIDE

    公开(公告)号:US20120123123A1

    公开(公告)日:2012-05-17

    申请号:US13321597

    申请日:2010-05-21

    IPC分类号: C07D489/08

    CPC分类号: C07D489/08

    摘要: Method for producing nalmefene hydrochloride from naltrexone, which method is particular well adapted for large-scale industrial application, and has been found to be efficient, to give a high yield and to afford highly pure nalmefene hydrochloride salt.

    摘要翻译: 从纳曲酮生产盐酸纳美芬的方法,该方法特别适用于大规模工业应用,并且已经被发现是有效的,以获得高产率并提供高纯度的纳美芬盐酸盐。

    Method for manufacture of escitalopram
    7.
    发明授权
    Method for manufacture of escitalopram 有权
    依他普仑的制备方法

    公开(公告)号:US08022232B2

    公开(公告)日:2011-09-20

    申请号:US12202522

    申请日:2008-09-02

    IPC分类号: A61K31/34 C07D307/00

    摘要: This patent discloses a method for resolution of 4-[4-(dimethylamino)-1-(4′-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)-benzonitrile as a racemic or non-racemic enantiomer mixture into its isolated enantiomers, said method comprising the step of fractionally crystallizing 4-[4-(dimethylamino)-1-(4′-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)-benzonitrile as a salt with the (+)-(S,S)- or (−)-(R,R)-enantiomer of O,O′-di-p-toluoyl-tartaric acid in a solvent system comprising 1-propanol, ethanol or acetonitrile.

    摘要翻译: 该专利公开了将4- [4-(二甲基氨基)-1-(4'-氟苯基)-1-羟基丁基] -3-(羟基甲基) - 苄腈作为外消旋或非外消旋对映异构体混合物分离成其分离的方法 所述方法包括将4- [4-(二甲基氨基)-1-(4'-氟苯基)-1-羟基丁基] -3-(羟甲基) - 苄腈与(+) - ( S,S) - 或( - ) - (R,R) - 对映体在包含1-丙醇,乙醇或乙腈的溶剂体系中的O,O-二对甲苯酰 - 酒石酸。

    METHOD FOR MANUFACTURE OF ESCITALOPRAM
    9.
    发明申请
    METHOD FOR MANUFACTURE OF ESCITALOPRAM 有权
    制造方法

    公开(公告)号:US20090069582A1

    公开(公告)日:2009-03-12

    申请号:US12202522

    申请日:2008-09-02

    IPC分类号: C07D307/87 C07C209/86

    摘要: This patent discloses a method for resolution of 4-[4-(dimethylamino)-1-(4′-fluorophenyl)-1-hydroxybutyl]-3-(hydroxymethyl)-benzonitrile as a racemic or non-racemic enantiomer mixture into its isolated enantiomers, said method comprising the step of fractionally crystallizing 4-[4-(dimethylamino)-1-(4′-fluoro-phenyl)-1-hydroxybutyl]-3-(hydroxymethyl)-benzonitrile as a salt with the (+)—(S,S)— or (−)—(R,R)-enantiomer of O,O′-di-p-toluoyl-tartaric acid in a solvent system comprising 1-propanol, ethanol or acetonitrile.

    摘要翻译: 该专利公开了将4- [4-(二甲基氨基)-1-(4'-氟苯基)-1-羟基丁基] -3-(羟基甲基) - 苄腈作为外消旋或非外消旋对映异构体混合物分离成其分离的方法 所述方法包括将4- [4-(二甲基氨基)-1-(4'-氟 - 苯基)-1-羟基丁基] -3-(羟甲基) - 苄腈以(+) - - 在包含1-丙醇,乙醇或乙腈的溶剂体系中的O,O-二对甲苯酰 - 酒石酸的(S,S) - 或( - ) - (R,R) - 对映异构体。