GB899023A - Resolving optically active ª--phenoxy alkanoic acids - Google Patents
Resolving optically active ª--phenoxy alkanoic acidsInfo
- Publication number
- GB899023A GB899023A GB4333060A GB4333060A GB899023A GB 899023 A GB899023 A GB 899023A GB 4333060 A GB4333060 A GB 4333060A GB 4333060 A GB4333060 A GB 4333060A GB 899023 A GB899023 A GB 899023A
- Authority
- GB
- United Kingdom
- Prior art keywords
- optically active
- lysine
- alkanoic acids
- phenoxy alkanoic
- separating
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B57/00—Separation of optically-active compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A process for separating an optically active a -phenoxy alkanoic acid of from 9 to 11 carbon atoms from a mixture with its antipode comprises treating a solution of said mixture in an inert organic solvent with an optically active lysine, separating the lysine salt of one of said antipodes by fractional crystallization and recovering the desired optically active acid. In examples is described the resolution of DL-a - isovaleric - and - a - methyl - butyric acids with L-lysine and of DL-a -phenoxypropionic-and -butyric acids with D-lysine. Optically active lysines may be prepared by passing an aqueous solution of optically active lysine hydrochlorides through a bed of an anion-exchange resin.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5392960A | 1960-09-06 | 1960-09-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB899023A true GB899023A (en) | 1962-06-20 |
Family
ID=21987516
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4333060A Expired GB899023A (en) | 1960-09-06 | 1960-12-16 | Resolving optically active ª--phenoxy alkanoic acids |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB899023A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3431295A (en) * | 1964-11-12 | 1969-03-04 | Stamicarbon | Process for the preparation of optically active lysine |
EP0204911A2 (en) * | 1985-04-18 | 1986-12-17 | ALFA WASSERMANN S.p.A. | A new process for the optical resolution of racemic mixtures of alpha-naphthylpropionic acids |
WO1994003457A1 (en) * | 1992-07-30 | 1994-02-17 | Laboratorio Chimico Internazionale S.P.A. | A process for the preparation of (-)-eserethole from mixtures of (-) and (+)-eserethole |
US5332834A (en) * | 1992-12-02 | 1994-07-26 | Hoechst Celanese Corporation | Racemization of an enantomerically enriched α-aryl carboxylic acid |
US5380867A (en) * | 1992-12-02 | 1995-01-10 | Hoechst Celanese Corporation | Selective precipitation of α-aryl carboxylic acid salts |
-
1960
- 1960-12-16 GB GB4333060A patent/GB899023A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3431295A (en) * | 1964-11-12 | 1969-03-04 | Stamicarbon | Process for the preparation of optically active lysine |
EP0204911A2 (en) * | 1985-04-18 | 1986-12-17 | ALFA WASSERMANN S.p.A. | A new process for the optical resolution of racemic mixtures of alpha-naphthylpropionic acids |
EP0204911A3 (en) * | 1985-04-18 | 1988-08-03 | Alfa Chemicals Italiana S.P.A. | A new process for the optical resolution of racemic mixtures of alpha-naphthylpropionic acids |
WO1994003457A1 (en) * | 1992-07-30 | 1994-02-17 | Laboratorio Chimico Internazionale S.P.A. | A process for the preparation of (-)-eserethole from mixtures of (-) and (+)-eserethole |
US5610316A (en) * | 1992-07-30 | 1997-03-11 | Laboratorio Chimico Internazionale S.P.A. | Process for the preparation of (-)-eserethole from mixtures of (-) and (+)-eserethole |
US5332834A (en) * | 1992-12-02 | 1994-07-26 | Hoechst Celanese Corporation | Racemization of an enantomerically enriched α-aryl carboxylic acid |
US5380867A (en) * | 1992-12-02 | 1995-01-10 | Hoechst Celanese Corporation | Selective precipitation of α-aryl carboxylic acid salts |
EP0672029A1 (en) * | 1992-12-02 | 1995-09-20 | Hoechst Celanese Corporation | SELECTIVE PRECIPITATION OF $g(a)-ARYL CARBOXYLIC ACID SALTS |
EP0672029A4 (en) * | 1992-12-02 | 1996-02-07 | Hoechst Celanese Corp | SELECTIVE PRECIPITATION OF -g(a)-ARYL CARBOXYLIC ACID SALTS. |
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