Process for introducing fluorine atoms into aromatic rings by nucleophilic exchange
US4978769A · kind A · utility
18Cited by
8References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 7, 1989 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Aug 7, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C201/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Aromatic, ring-fluorinated compounds are particularly advantageously prepared by nucleophilic exchange in the course of reaction wih potassium fluoride in the presence of phase transfer catalysts and, if desired, solvents by carrying out the reaction in the additional presence of metal salts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.