Production of DL-serine
US4304933A · kind A · utility
3Cited by
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8Claims
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Assignee
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Key dates
| Filing date | Dec 2, 1980 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | Dec 2, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D203/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Production of DL-serine by heating a strong acid type cation exchange resin having aziridine-2-carboxylic acid absorbed thereto. Specifically, an industrial process for producing DL-serine is provided which comprises treating an alpha-halogeno-beta-aminopropionitrile or its mineral acid salt in water or a water-containing organic solvent with an alkali or alkaline earth metal hydroxide to form an alkali or alkaline earth metal aziridine-2-carboxylate, treating the reaction mixture with a strong acid type cation exchange resin to cause adsorption of aziridine-2-carboxylic acid, and thereafter heating the cation-exchange resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.