Perfluoroalkylation process
US4990699A · kind A · utility
3Cited by
3References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1988 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Oct 17, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C201/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Despite the instabity of perfluoralkyl anions, it is possible to perfluoroalkylate aromatic compounds if appropriately substituted by suitable electronegative substituents (e.g., nitro, trifluoromethylsulfonyl, etc.). Thus a novel Meisenheimer complex is formed by thermally decomposing a salt of a perfluoroalkanoic acid in the presence of an aromatic compound such as 1,3,5-trinitrobenzene. Oxidation with organic hypochlorite yields the corresponding perfluoroalkylated aromatic compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.