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    • 2. 发明授权
    • Process for the optical resolution of DL-p-hydroxy-phenylglycine
    • DL-对羟基苯基甘氨酸的光学拆分方法
    • US4309362A
    • 1982-01-05
    • US885804
    • 1978-03-13
    • Ichiro ChibataShigeki YamadaChikara Hongo
    • Ichiro ChibataShigeki YamadaChikara Hongo
    • C07C145/00
    • Seed crystals of an optically active enantiomer of any one of p-hydroxyphenylglycine benzenesulfonate, p-hydroxyphenylglycine p-ethylbenzenesulfonate, p-hydroxyphenylglycine o-toluenesulfonate or p-hydroxyphenylglycine sulfosalicylate are added to a supersaturated solution of the racemic modification of the corresponding p-hydroxyphenylglycine salt. Crystallization of the optically active enantiomer results. Then, the crystals are recovered. Alternatively, crystals of the optically active enantiomer may be added to a hot solution of the racemic modification of the corresponding p-hydroxyphenylglycine salt to produce a supersaturated solution thereof. The solution is then cooled to crystallize out the optically active enantiomer. Optically active p-hydroxyphenylglycine benzenesulfonate, optically active p-hydroxyphenylglycine p-ethylbenzenesulfonate, optically active p-hydroxyphenylglycine o-toluenesulfonate or optically active p-hydroxyphenylglycine sulfosalicylate is thereby obtained.
    • 将对羟基苯基甘氨酸苯磺酸盐,对羟基苯基甘氨酸对乙基苯磺酸盐,对羟基苯基甘氨酸邻甲苯磺酸盐或对羟基苯基甘氨酸磺基水杨酸盐​​的光学活性对映异构体的晶种加入到相应对羟基苯基甘氨酸的外消旋体的过饱和溶液 盐。 导致光学活性对映异构体的结晶。 然后,回收晶体。 或者,可将光学活性对映异构体的晶体加入相应对羟基苯基甘氨酸盐的外消旋体的热溶液中以产生其过饱和溶液。 然后将溶液冷却以使光学活性对映异构体结晶。 由此得到光学活性对羟基苯基甘氨酸苯磺酸盐,光学活性对羟基苯基甘氨酸对乙基苯磺酸盐,光学活性对羟基苯基甘氨酸邻甲苯磺酸盐或光学活性对羟基苯基甘氨酸磺基水杨酸盐​​。
    • 5. 发明授权
    • p-Hydroxyphenylglycine..alpha.-phenylethanesulfonate, process for
production thereof and utilization thereof in resolution of
p-hydroxyphenylglycine
    • 对羟基苯基甘氨酸。 α-苯基乙烷磺酸盐,其制备方法和在分离对羟基苯基甘氨酸中的应用
    • US4415504A
    • 1983-11-15
    • US416338
    • 1982-09-09
    • Ichiro ChibataShigeki YamadaChikara HongoRyuzo Yoshioka
    • Ichiro ChibataShigeki YamadaChikara HongoRyuzo Yoshioka
    • C07B57/00C07C143/26
    • C07C229/36C07C227/34C07C303/44C07C309/24C07B2200/07Y02P20/582
    • p-Hydroxyphenylglycine..alpha.-phenylethanesulfonate which is useful for the production of optically active p-hydroxyphenylglycine and optically active .alpha.-phenylethanesulfonic acid is disclosed. p-Hydroxyphenylglycine..alpha.-phenylethanesulfonate is produced by either reacting DL-p-hydroxyphenylglycine with optically active .alpha.-phenylethanesulfonic acid or reacting (.+-.)-.alpha.-phentylethanesulfonic acid with optically active p-hydroxyphenylglycine to form two diastereomers of DL-p-hydroxyphenylglycine optically active .alpha.-phenylethanesulfonate or optically active p-hydroxyphenylglycine (.+-.)-.alpha.-phenylethanesulfonate, and isolating one diastereomer according to the difference between solubilities of the diastereomers, optionally, combining selective crystallization of one diastereomer and epimerization of another diastereomer in the case of reaction of DL-p-hydroxyphenylglycine and optically active .alpha.-phenylethanesulfonic acid. This reaction is utilized in the resolution of p-hydroxyphenylglycine or .alpha.-phenylethanesulfonic acid by deacidifying the resulting diastereomer.
    • 对羟基苯基甘氨酸。 公开了可用于制备光学活性对羟基苯基甘氨酸和光学活性α-苯乙烷磺酸的α-苯基乙烷磺酸盐。 对羟基苯基甘氨酸。 α-苯基乙烷磺酸盐通过使DL-对羟基苯基甘氨酸与光学活性α-苯基乙烷磺酸反应或使(+/-) - α-正丁基乙磺酸与光学活性对羟基苯基甘氨酸反应形成DL-对羟基苯基甘氨酸光学活性的两种非对映异构体 α-苯基乙烷磺酸盐或光学活性对羟基苯基甘氨酸(+/-) - α-苯基乙烷磺酸盐,并根据非对映异构体的溶解度之间的差异分离一种非对映异构体,任选地,将一种非对映异构体的选择性结晶和另一种非对映异构体的差向异构化在另一种非对映异构体的情况下 DL-对羟基苯基甘氨酸和光学活性α-苯基乙烷磺酸的反应。 该反应用于通过使得到的非对映异构体脱酸来分离对羟基苯基甘氨酸或α-苯基乙烷磺酸。