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    • 1. 发明授权
    • Process for optically resolving 2-(3-benzoylphenyl) propionic acid
    • 光学拆分2-(3-苯甲酰基苯基)丙酸的方法
    • US5852209A
    • 1998-12-22
    • US897500
    • 1997-06-09
    • Hiroyuki NohiraShigeya SaijoMasafumi MoriwakiShunji KamiyamaKazutoshi ToyodaJun MatsumotoKohichi MaruoTaizo Fujimoto
    • Hiroyuki NohiraShigeya SaijoMasafumi MoriwakiShunji KamiyamaKazutoshi ToyodaJun MatsumotoKohichi MaruoTaizo Fujimoto
    • C07B57/00C07C51/487C07C57/38
    • C07C51/487
    • Provided is a process for separating (S)- or (R)-2-(3-benzoylphenyl)propionic acid from a mixture of (S)- and (R)-2-(3-benzoylphenyl)propionic acid, which comprises (1) reacting the mixture of (S)- and (R)-2-(3-benzoylphenyl)propionic acid with (S)- or (R)-3-methyl-2-phenylbutylamine in a suitable solvent to form a diastereomer salt of (S)-2-(3-benzoylphenyl)propionic acid with (S)-3-methyl-2-phenylbutylamine or a diastereomer salt of (R)-2-(3-benzoylphenyl)propionic acid with (R)-3-methyl-2-phenylbutylamine; (2) separating the diastereomer salt from the reaction mixture; and (3) liberating the separated diastereomer salt to give (S)- or (R)-2-(3-benzoylphenyl)propionic acid. According to the present process, it is possible to obtain optically active (S)- or (R)-2-(3-benzoylphenyl)propionic acid having 99% or more of high optical purity in a high yield. Thus, the present process is a practical and efficient process which can simplify purification steps and can be applied for an industrial production process.
    • 提供了从(S) - 和(R)-2-(3-苯甲酰基苯基)丙酸的混合物中分离(S) - 或(R)-2-(3-苯甲酰基苯基)丙酸的方法,其包括 1)使(S) - 和(R)-2-(3-苯甲酰基苯基)丙酸的混合物与(S) - 或(R)-3-甲基-2-苯基丁胺在合适的溶剂中反应以形成非对映异构体盐 (S)-2-(3-苯甲酰基苯基)丙酸与(S)-3-甲基-2-苯基丁胺或(R)-2-(3-苯甲酰基苯基)丙酸的非对映异构体盐与(R)-3 - 甲基-2-苯基丁胺; (2)从反应混合物中分离非对映异构体盐; (3)释放分离出的非对映体盐得到(S) - 或(R)-2-(3-苯甲酰基苯基)丙酸。 根据本方法,可以以高收率得到具有99%以上的光学纯度的光学活性(S) - 或(R)-2-(3-苯甲酰基苯基)丙酸。 因此,本方法是一种实用且有效的方法,可简化纯化步骤,可应用于工业生产过程。