Processes for preparing pentafluoroethoxy- and pentafluoroethylthiobenzene drivatives
US4837364A · kind A · utility
9Cited by
5References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1986 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Mar 28, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C319/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of (pentafluoroethoxy)- and (pentafluoroethylthio)benzene derivatives either from phenol, thiophenol or from halobenzene. A halobenzene is reacted with trifluoroethanol or a phenol or a thiophenol is reacted with a compound of the formula CF.sub.3 --CH.sub.2 --O--R'. The product is chlorinated and the chlorinated product is fluorinated in liquid hydrofluoric acid in the presence of a Lewis acid. The compounds obtained by the process of the present invention are used as synthesis intermediates in the phytosanitary, pharmaceutical and veterinary industries, and are used in lubricants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.