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    • 1. 发明申请
    • Process for producing optically active carboxylic acid
    • 光学活性羧酸的制备方法
    • US20050065368A1
    • 2005-03-24
    • US10934724
    • 2004-09-07
    • Masanobu YatagaiMasafumi MinomuraShigekatsu Tsuchiya
    • Masanobu YatagaiMasafumi MinomuraShigekatsu Tsuchiya
    • C07C51/41C07C51/43C07C51/487C07C61/04
    • C07C51/43C07B2200/07C07C51/412C07C51/487C07C2601/02C07C61/04
    • The invention provides a process for producing optically active 2,2-dimethylcyclopropanecarboxylic acid by reacting an optical isomer mixture of 2,2-dimethylcyclopropanecarboxylic acid with an optically inactive amine to form (precipitate, crystallize or the like) an ammonium salt of optically active 2,2-dimethylcyclopropanecarboxylic acid, for example, optically active (S)-(+)-2,2-dimethylcyclopropanecarboxylic acid. The production (optical resolution, separation of an optically active substance, purification of an optically active substance or the like) of optically active 2,2-dimethylcyclopropanecarboxylic acid which is important as an intermediate for production of agricultural chemicals, medications and the like can easily be conducted at low cost. Further, the invention provides an intermediate therefor (an ammonium salt of optically active 2,2-dimethylcyclopropanecarboxylic acid, especially preferably an ammonium salt of optically active (S)-(+)-2,2-dimethylcyclopropanecarboxylic acid, or the like), and an optical resolution agent (optically inactive amine) for separation of optically active 2,2-dimethylcyclopropanecarboxylic acid.
    • 本发明提供一种通过使2,2-二甲基环丙烷羧酸的光学异构体混合物与光学活性胺反应形成(沉淀,结晶等)光学活性2的铵盐的光学活性2,2-二甲基环丙烷羧酸的方法 ,2-二甲基环丙烷羧酸,例如光学活性(S) - (+) - 2,2-二甲基环丙烷甲酸。 作为农药,药物等的生产中间体重要的光学活性2,2-二甲基环丙烷羧酸的制造(光学拆分,光学活性物质的分离,光学活性物质的纯化等)容易 以低成本进行。 此外,本发明提供了其中间体(光学活性2,2-二甲基环丙烷羧酸的铵盐,特别优选光学活性(S) - (+) - 2,2-二甲基环丙烷甲酸等的铵盐), 和用于分离光学活性的2,2-二甲基环丙烷羧酸的光学拆分剂(光学惰性胺)。
    • 5. 发明授权
    • Process for producing optically active carboxylic acid
    • 光学活性羧酸的制备方法
    • US07592480B2
    • 2009-09-22
    • US10934724
    • 2004-09-07
    • Masanobu YatagaiMasafumi MinomuraShigekatsu Tsuchiya
    • Masanobu YatagaiMasafumi MinomuraShigekatsu Tsuchiya
    • C07B57/00C07C61/04
    • C07C51/43C07B2200/07C07C51/412C07C51/487C07C2601/02C07C61/04
    • The invention provides a process for producing optically active 2,2-dimethylcyclopropanecarboxylic acid by reacting an optical isomer mixture of 2,2-dimethylcyclopropanecarboxylic acid with an optically inactive amine to form (precipitate, crystallize or the like) an ammonium salt of optically active 2,2-dimethylcyclopropanecarboxylic acid, for example, optically active (S)-(+)-2,2-dimethylcyclopropanecarboxylic acid. The production (optical resolution, separation of an optically active substance, purification of an optically active substance or the like) of optically active 2,2-dimethylcyclopropanecarboxylic acid which is important as an intermediate for production of agricultural chemicals, medications and the like can easily be conducted at low cost. Further, the invention provides an intermediate therefor (an ammonium salt of optically active 2,2-dimethylcyclopropanecarboxylic acid, especially preferably an ammonium salt of optically active (S)-(+)-2,2-dimethylcyclopropanecarboxylic acid, or the like), and an optical resolution agent (optically inactive amine) for separation of optically active 2,2-dimethylcyclopropanecarboxylic acid.
    • 本发明提供一种通过使2,2-二甲基环丙烷羧酸的光学异构体混合物与光学活性胺反应形成(沉淀,结晶等)光学活性2的铵盐的光学活性2,2-二甲基环丙烷羧酸的方法 ,2-二甲基环丙烷羧酸,例如光学活性(S) - (+) - 2,2-二甲基环丙烷甲酸。 作为农药,药物等的生产中间体重要的光学活性2,2-二甲基环丙烷羧酸的制造(光学拆分,光学活性物质的分离,光学活性物质的纯化等)容易 以低成本进行。 此外,本发明提供了其中间体(光学活性2,2-二甲基环丙烷羧酸的铵盐,特别优选光学活性(S) - (+) - 2,2-二甲基环丙烷羧酸的铵盐等), 和用于分离光学活性的2,2-二甲基环丙烷羧酸的光学拆分剂(光学惰性胺)。