HUT45476A - Process for producing optical isomers of transchrysantemic acid - Google Patents
Process for producing optical isomers of transchrysantemic acidInfo
- Publication number
- HUT45476A HUT45476A HU330286A HU330286A HUT45476A HU T45476 A HUT45476 A HU T45476A HU 330286 A HU330286 A HU 330286A HU 330286 A HU330286 A HU 330286A HU T45476 A HUT45476 A HU T45476A
- Authority
- HU
- Hungary
- Prior art keywords
- acid
- optical purity
- fraction
- optical isomers
- transchrysantemic
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title abstract 6
- 239000002253 acid Substances 0.000 title 1
- XLOPRKKSAJMMEW-SFYZADRCSA-N (+)-trans-chrysanthemic acid Chemical class CC(C)=C[C@@H]1[C@@H](C(O)=O)C1(C)C XLOPRKKSAJMMEW-SFYZADRCSA-N 0.000 abstract 2
- 239000003960 organic solvent Substances 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
HUT045476 In order to obtain optical isomers of trans-chrysanthemumic-acid, an enantiomer of 3-40% optical purity is agitated in an organic solvent at a temp. between -10 and +30 deg.C. The resulting crystalline trans-chrysanthemumic acid is removed and the optically active fraction is extracted from the liq. phase. If needed, the process is repeated once or a number of times. Conversely, an enantiomer mixt. of at least 40% optical purity is allowed to stand between -15 deg.C and 35 deg.C and the fluid fraction of greater optical purity is sepd. from the solid crystalline fraction of lower optical purity. This process can be repeated one or more times, using the melt as the starting point. The solid crystalline fraction is reagitated with the aid of an organic solvent in order to separate the racemic and optically pure parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU330286A HU203715B (en) | 1986-07-31 | 1986-07-31 | Process for separating optically active isomeres of cys-free trans chrisanthemic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU330286A HU203715B (en) | 1986-07-31 | 1986-07-31 | Process for separating optically active isomeres of cys-free trans chrisanthemic acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| HUT45476A true HUT45476A (en) | 1988-07-28 |
| HU203715B HU203715B (en) | 1991-09-30 |
Family
ID=10963487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HU330286A HU203715B (en) | 1986-07-31 | 1986-07-31 | Process for separating optically active isomeres of cys-free trans chrisanthemic acid |
Country Status (1)
| Country | Link |
|---|---|
| HU (1) | HU203715B (en) |
-
1986
- 1986-07-31 HU HU330286A patent/HU203715B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| HU203715B (en) | 1991-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| HMM4 | Cancellation of final prot. due to non-payment of fee |