Process for producing fluorobenzophenone derivatives
US4453009A · kind A · utility
5Cited by
1References
5Claims
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Assignee
Inventors
Key dates
| Filing date | Oct 8, 1982 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Oct 8, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C201/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
4-Fluorobenzophenone derivatives of 4,4'-difluorobenzophenone are produced by effecting a halogen-fluorine exchanging reaction between the corresponding 4-halogenobenzophenone derivatives or 4,4'-dihalogenobenzophenone and an alkali fluoride. The reaction is carried out by heating in an organic solvent. After distilling off the solvent from the reaction product mixture, the end product is isolated by extracting with a solvent. Alternatively the end product is isolated by distillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.