JPS5515437A - Preparation of purified mephenamic acid - Google Patents
Preparation of purified mephenamic acidInfo
- Publication number
- JPS5515437A JPS5515437A JP8792978A JP8792978A JPS5515437A JP S5515437 A JPS5515437 A JP S5515437A JP 8792978 A JP8792978 A JP 8792978A JP 8792978 A JP8792978 A JP 8792978A JP S5515437 A JPS5515437 A JP S5515437A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- mephenamic
- xylidine
- adsorbent
- halobenzoic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To prepare the title compound useful as a non-narcotic analgesic, etc. by condensing an o-halobenzoic acid with 2,3-xylidine, dissolveing the resulting crude mephenamic acid in a specific hot organic solvent, and treating the solution with a specific adsorbent.
CONSTITUTION: o-Halobenzoic acid or its alkali metal salt is condensed with 2,3- xylidine, and the obtained crude mephenamic acid or roughly purified mephenamic acid is dissolved in an organic solvnet such as benzene, toluene, xylene, ethylbenzene, anisole, chlorobenzene, etc., by heating, and treated with an adsorbent such as Japanese acid clay, active earth, silica gel, synthetic silica alumina, solid phosphoric acid, etc. to remove the color components.
EFFECT: Shortened purification process, simplified operations, and reduced solvent consumption and waste water.
USE: Antiphlogistic agent.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8792978A JPS5515437A (en) | 1978-07-19 | 1978-07-19 | Preparation of purified mephenamic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8792978A JPS5515437A (en) | 1978-07-19 | 1978-07-19 | Preparation of purified mephenamic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5515437A true JPS5515437A (en) | 1980-02-02 |
Family
ID=13928597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8792978A Pending JPS5515437A (en) | 1978-07-19 | 1978-07-19 | Preparation of purified mephenamic acid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5515437A (en) |
-
1978
- 1978-07-19 JP JP8792978A patent/JPS5515437A/en active Pending
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