Fluorination process
US5900502A · kind A · utility
4Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1996 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Oct 25, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C231/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
According to the present invention there is provided a process for the selective introduction of one or more fluorine atoms into a disubstituted aromatic compound in an acid medium with fluorine gas characterized in that the acid medium has a dielectric constant of at least 20 and a pH of less than 3. The present process provides a cost effective means of selectively introducing one or more fluorine atoms into an aromatic compound in good overall yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.