Pure crystalline methyl 2-acryloylamino-2-methoxy acetate and a process for preparing IT
US4960923A · kind A · utility
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Key dates
| Filing date | Nov 2, 1988 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Nov 2, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C233/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The process for preparing a novel product, pure crystalline methyl 2-acryloylamino-2-methoxyacetate, involves reacting pure crystalline, anhydrous acrylamido-glycolic acid in an anhydrous medium with methanol in the presence of hydrogen chloride. This is subsequently neutralized with an alkali metal bicarbonate, and then the mineral salts are filtered off. Finally, pure crystalline methyl 2-acryloylamino-2-methoxyacetate is obtained by taking up the concentrated reaction medium in 1,1,1-trichloroethane under vacuum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.