Process for producing N-formylleucine of high purity
US6294692A · kind A · utility
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11Claims
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Key dates
| Filing date | Dec 15, 1999 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Dec 15, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C231/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing N-formylleucine includes reacting leucine with formamide, precipitating the N-formylleucine, once the reaction is complete, at a temperature of approximately 0.degree. to 40.degree. C., by mixing the reaction medium with water and an acid, so that the final pH of the mixture is approximately 2 to 3, wherein the amount of water used in between approximately 1.5 and 5 parts per part by weight of starting formamide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.