GB705711A - Process for splitting dl-threo-1-p-nitrophenyl-2-amino-1,3-propanediol into its optical isomers - Google Patents
Process for splitting dl-threo-1-p-nitrophenyl-2-amino-1,3-propanediol into its optical isomersInfo
- Publication number
- GB705711A GB705711A GB20144/51A GB2014451A GB705711A GB 705711 A GB705711 A GB 705711A GB 20144/51 A GB20144/51 A GB 20144/51A GB 2014451 A GB2014451 A GB 2014451A GB 705711 A GB705711 A GB 705711A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tartrate
- threo
- nitrophenyl
- amino
- propanediol
- 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
- C07B2200/00—Indexing scheme relating to specific properties of organic compounds
- C07B2200/07—Optical isomers
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
DL-Threo- 1- p-nitrophenyl- 2- amino -1:3-propandiol is resolved into its optically active isomers by subjecting a solution of its d-tartrate in water first to an extremely slow crystallization with continuous agitation at a temperature not below 30 DEG C. to precipitate the d-tartrate of the D-(-)-aminodiol, filtering, and cooling the filtrate to 25 DEG C. to crystallize the d-tartrate of the L- (+)- aminodiol. The mother liquor from the second crystallization may be recycled for dissolving new portions of the racemic product. Both salts may be purified by recrystallization and then treated with alkali metal hydroxide or ammonia to liberate the optically active aminodiols, which are then further purified. A detailed example is given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT705711X | 1950-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB705711A true GB705711A (en) | 1954-03-17 |
Family
ID=11314085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20144/51A Expired GB705711A (en) | 1950-12-09 | 1951-08-27 | Process for splitting dl-threo-1-p-nitrophenyl-2-amino-1,3-propanediol into its optical isomers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB705711A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5336664A (en) * | 1990-04-24 | 1994-08-09 | Zambon Group S.P.A. | Compositions having herbicidal activity containing N-alkyl-amides as active ingredient |
-
1951
- 1951-08-27 GB GB20144/51A patent/GB705711A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5336664A (en) * | 1990-04-24 | 1994-08-09 | Zambon Group S.P.A. | Compositions having herbicidal activity containing N-alkyl-amides as active ingredient |
| US5556829A (en) * | 1990-04-24 | 1996-09-17 | Zambon Group S.P.A. | Compositions having herbicidal activity containing N-alkyl-amides as active ingredient |
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