Process for the preparation of dimethylmaleic anhydride
US4644069A · kind A · utility
6Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1985 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Aug 6, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/567
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The reaction of maleic acid, fumaric acid and/or maleic anhydride in the presence of N-acylated heterocyclic amidines and at elevated temperature affords dimethylmaleic anhydride in good yield. Catalytic amounts of the amidine employed are sufficient for said reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.