Resolution of N-acyl-DL (+)-phenylalanines
US4151198A · kind A · utility
8Cited by
4References
6Claims
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Assignee
Inventor
Key dates
| Filing date | Jun 2, 1978 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Jun 2, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B57/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The treatment of N-acyl-DL(+)-phenylalanines with D(-)-2-(2,5-dimethylbenzylamino)-1-butanol results in the formation of the D(-)-2-(2,5-dimethylbenzylamino)-1-butanol salt which is obtained as a crystallizate of the N-acyl-L(+)-phenylalanine and from which the desired N-acyl-L(+)-phenylalanine, an intermediate useful for the preparation of artificial sweetening agents, can be recovered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.