Difluorophthaloyl fluoride
US4361521A · kind A · utility
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1Claims
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Assignee
Inventor
Key dates
| Filing date | Jan 26, 1981 |
| Grant date | Nov 30, 1982 |
| Priority date | — |
| Expiry date | Jan 26, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C63/68
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A novel fluorinated aromatic compound, 4,5-difluorophthaloyl fluoride, is prepared by reacting 4,5-dichlorophthalic anhydride with a stoichiometric excess of potassium fluoride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.