Process for production of 5-alkyl tetramic acids
US5008402A · kind A · utility
1Cited by
14References
16Claims
0Family size
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Key dates
| Filing date | Mar 22, 1990 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Mar 22, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S530/86
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production of 5-alkyl tetramic acids from 4-alkoxy-3-pyrrolin-2-ones and aldehydes or ketones. By basic catalysis, 5-alkylidene-4-alkoxy-3-pyrrolin-2-ones are first formed, which are converted into the target compounds by cleavage of the alkoxy group and catalytic hydrogenation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.