Process for preparing fluorinated compounds
US5023377A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1989 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Aug 1, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C239/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing fluorinated compounds belonging to the classes: EQU XH--Y--CZ.sub.1 Z.sub.2 -(CF.sub.2).sub.n F (I) EQU and EQU YH--X--(CF.sub.2).sub.n --CZ.sub.1 Z.sub.2 F (II) wherein: PA0 X is NR.sub.x, O, S, CFR.sub.x, C(R.sub.x).sub.2, or CF.sub.2 ; PA0 Y is NR.sub.x, O, S, CFR.sub.x, C(R.sub.x).sub.2, or CF.sub.2 ; PA0 X is different from Y; PA0 R.sub.x is a perhalogenated alkyl group, containing from 1 to 4 carbon atoms; PA0 n is either 0 or 1; PA0 Z.sub.1 and Z.sub.2, which may be either equal to, or different from, each other, represent F, Cl, Br, H or R.sub.x. The process is characterized in that a fluorinated cyclic compound of the formula: ##STR1## is reacted, at a temperature within the range of from -80.degree. to +300.degree., with HF in the presence of a Lewis acid. Some of the so-obtained compounds per se are novel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.