GB1138421A - Preparation of optically active isomers of serine - Google Patents
Preparation of optically active isomers of serineInfo
- Publication number
- GB1138421A GB1138421A GB383867A GB383867A GB1138421A GB 1138421 A GB1138421 A GB 1138421A GB 383867 A GB383867 A GB 383867A GB 383867 A GB383867 A GB 383867A GB 1138421 A GB1138421 A GB 1138421A
- Authority
- GB
- United Kingdom
- Prior art keywords
- enantiomorph
- serine
- solution
- paratoluenesulphonate
- crystals
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,138,421. Resolving DL-serine paratoluenesulphonate. TANABE SEIYAKU CO. Ltd. 25 Jan., 1967 [25 Jan., 1966], No. 3838/67. Heading C2C. DL-Serine paratoluenesulphonate is resolved by preparing a supersaturated solution of DL- serine paratoluenesulphonate in an inert solvent therefor, adding crystals of the desired enantiomorph to the solution before and/or after the said solution reaches supersaturation so that the proportion of one enantiomorph becomes greater than that of the other, allowing crystallization to take place and recovering the separated crystals. In one embodiment a small quantity of crystals of the desired enantiomorph is used to inoculate the supersaturated solution and the mixture is stirred to induce crystallization. In another embodiment, a small quantity of one enantiomorph is dissolved in a hot solution of the racemic modification. A combination of these embodiments may also be used. Specified solvents are water, alkanols and ketones having up to 6 carbon atoms and mixtures thereof. After the first crop of enantiomorph is filtered off, the mother liquor may be used for separating the other enantiomorph. Free serine can be liberated by conventional methods.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP450666 | 1966-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1138421A true GB1138421A (en) | 1969-01-01 |
Family
ID=11585924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB383867A Expired GB1138421A (en) | 1966-01-25 | 1967-01-25 | Preparation of optically active isomers of serine |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE693041A (en) |
| CH (1) | CH475172A (en) |
| DE (1) | DE1543934A1 (en) |
| FR (1) | FR1508859A (en) |
| GB (1) | GB1138421A (en) |
| NL (2) | NL6701085A (en) |
-
0
- FR FR1508859D patent/FR1508859A/fr not_active Expired
- NL NL130967D patent/NL130967C/xx active
-
1967
- 1967-01-23 DE DE19671543934 patent/DE1543934A1/en active Pending
- 1967-01-23 BE BE693041D patent/BE693041A/xx unknown
- 1967-01-24 NL NL6701085A patent/NL6701085A/xx unknown
- 1967-01-25 GB GB383867A patent/GB1138421A/en not_active Expired
- 1967-01-25 CH CH107467A patent/CH475172A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BE693041A (en) | 1967-07-03 |
| CH475172A (en) | 1969-07-15 |
| NL6701085A (en) | 1967-07-26 |
| DE1543934A1 (en) | 1972-02-24 |
| NL130967C (en) | |
| FR1508859A (en) | 1968-03-20 |
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