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    • 1. 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。