Hypofluorites and bis-hypofluorites, and process for preparing same
AssigneeAusimont S.p.A.
InventorsAntonio Marraccini, Giorgio Guglielmo, Alessandro Malacrida, Lamberto Roberti
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Abstract
Mono- and bis-hypofluorites respectively of formula: FO.sub.2 S--R.sub.f --CF.sub.2 OF and FOCF.sub.2 --R'.sub.f --CF.sub.2 OF wherein R.sub.f is perfluoroalkylene or perfluorochloroalkylene and R'.sub.f is a perfluoroalkylene or perfluorooxyalkylene, and process for preparing them, which is conducted continuously, at a temperature from 0.degree. to 60.degree. C. and comprises starting from the respective acyl fluorides ##STR1## by reaction of fluorine in the gas phase in the presence of a catalyst consisting of K, Rb, Cs or Ba fluoride, preferably supported on a metal material.
Claims9
A process for preparing hypofluorites and bis-hypofluorites, respectively of formula:
- FSO.sub.2 --R.sub.f --CF.sub.2 OF (I)
- and
- FOCF.sub.2 --R'.sub.f --CF.sub.2 OF (II)
- wherein R.sub.f is a perfluoroalkylene or a perfluorochloroalkylene having from 1 to 4 carbon atoms and R' is a perfluoroalkylene or a perfluorooxyalkylene having from 1 to 10 carbon atoms, by reaction of the respective acid fluorides ##STR11## with fluorine, in the gas phase, conducted at 0.degree.-60.degree. C. in the presence of a catalyst composed of a K, Rb, Cs or a Ba fluoride, preferably supported on a metal material and arranged in the reactor in the form of a fixed catalytic bed, the process being conducted continuously.
The compound of formula (I) wherein R.sub.f is --CFCl--.
The compound of formula (I) wherein R.sub.f is R1 ? ##STR13##
The compound of formula (II) wherein R'.sub.f is --CF.sub.2 O--CF.sub.2 CF.sub.2 --.
The compound of formula (II) wherein R'.sub.f is (--CF.sub.2 O--CF.sub.2 CF.sub.2 --).sub.2.
Dependencies are inferred from the claim text.