发明授权
US4016205A Process for the optical resolution of DL-2-(4-hydroxyphenyl)glycine
失效
DL-2-(4-羟基苯基)甘氨酸的光学拆分方法
- 专利标题: Process for the optical resolution of DL-2-(4-hydroxyphenyl)glycine
- 专利标题(中): DL-2-(4-羟基苯基)甘氨酸的光学拆分方法
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申请号: US612660申请日: 1975-09-12
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公开(公告)号: US4016205A公开(公告)日: 1977-04-05
- 发明人: Kazuo Kariyone , Hideo Yagi , Kazuhiko Yoshida
- 申请人: Kazuo Kariyone , Hideo Yagi , Kazuhiko Yoshida
- 申请人地址: JA Osaka
- 专利权人: Fujisawa Pharmaceutical Co., Ltd.
- 当前专利权人: Fujisawa Pharmaceutical Co., Ltd.
- 当前专利权人地址: JA Osaka
- 优先权: JA49-105805 19740912
- 主分类号: C07C227/34
- IPC分类号: C07C227/34 ; C07B57/00 ; C07C67/00 ; C07C227/00 ; C07C227/16 ; C07C227/18 ; C07C229/36 ; C07C101/30
摘要:
This invention relates to a process of resolving D and L-2-(4-hydroxyphenyl) glycine. DL-2-(4-hydroxyphenyl) glycine is treated with d-3-bromo-2-oxo-10-bornanesulfonic acid to form a mixture of d-3-bromo-2-oxo-10-bornanesulfonic acid salts of D- and L-2-(4-Hydroxyphenyl) glycine. This mixture is treated with a solvent selected from the group consisting of isobutyl alcohol, a mixture of a lower alkanol and chloroform, or a mixture of a lower alkanol and toluene. The precipitate containing the d-3-bromo-2-oxo-10 bornanesulfonic acid salt of L-2-(4-hydroxyphenyl) glycine is collected. The corresponding acid salt of D-2-(hydroxyphenyl) glycine is collected from the mother liquor. D- and L-2-(4-hydroxyphenyl) glycine are then recovered by conventional means.
公开/授权文献
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