Process for Preparing Perfluoroalkenyl-Sulfonyl Fluorides

US Patent: 5103049 A

Date: Apr. 7 1992

Inventors: W. Navarrini, D. D. Desmarteu

ABSTRACT

Process for the synthesis of perfluoroalkenyl-sulfonyl fluorides of formula:

Rf-CF=CF-SO2F

wherein:

Rf is F or a perfluoroalkyl group of from 1 to 9 carbon atoms, consisting in bringing a perfluoroalkyl-(sulfonyl fluoride) monofluoroacetyl-fluoride of formula Rf-CF2-CF(COF)-SO2F into contact with a reactant constituted by a carbonate of a metal belonging to Groups IA, IIA and IIB of the Periodical Table of the Elements at a temperature comprised within the range of from 150 to 400 C, and then recovering the desired product. The process is run in continuous.

US5103049 – PDF

PERFLUORO OXAZIRIDINES, OXAZETIDINES, AND DIAZIRIDINES IN RING-OPENING COPOLYMERIZATION

Author(s): NAVARRINI, W (NAVARRINI, W); DESMARTEAU, DD (DESMARTEAU, DD)

Source: ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY.

Volume: 207 Pages: 12-FLUO Part: 1 Published: MAR 13 1994.

Process for the Preparation of Perfluoro-Amino Oxaziridine

US Patent: 5017709

Date: May 21 1991

Inventors: W. Navarrini, D. D. Desmarteu

ABSTRACT

Perfluoro-oxaziridines, characterized by the presence of an aminic group in position 3 of the oxaziridine ring, of the formula:

wherein each R is independently either F or a perfluoro-alkyl group, and a process for their preparation, consisting in reacting the corresponding perfluoroimine with H2O2, in the presence of a base in a dipolar aprotic solvent.

US5017709 – PDF

Perfluorodiaziridines and Process for Preparing Them

US Patent: 4948903

Date: Aug. 14 1990

Inventors: W. Navarrini, D. D. Desmarteu

ABSTRACT

The present invention relates to novel perfluorodiaziridines having the formula: wherein: R1 and R2, the same or different from each other, represent a perfluoroalkyl group of from 1 to 10 carbon atoms, and R3 represents a fluorine atom or a perfluoroalkyl group of from 1 to 9 carbon atoms. These perfluorodiaziridines are obtained by reacting perfluoroaminooxaziridines with a source of fluoride ions.

US4948903 – PDF

Perfluoro-Amino-Oxaziridines

US Patent: 4874875 A

Date: Oct. 17 1989

Inventors: W. Navarrini, D. D. Desmarteu

ABSTRACT

Perfluoro-oxaziridines, characterized by the presence of an aminic group in position 3 of the oxaziridine ring, of the formula: wherein each R is independently either F or a perfluoro-alkyl group, and a process for their preparation, consisting in reacting the corresponding perfluoroimine with H2O2, in the presence of a base in a dipolar aprotic solvent.

US4874875 – PDF