4089-59-2

Basic information

• Product Name: Acetyl fluoride, 2,2-difluoro-2-[1,1,2,2-tetrafluoro-2-(fluorosulfonyl)ethoxy]-
• CAS NO: 4089-59-2
• Molecular Formula: C4F8O4S
• Molecular Weight: 296.095
• Mol File: 4089-59-2.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: Acetyl fluoride, 2,2-difluoro-2-[1,1,2,2-tetrafluoro-2-(fluorosulfonyl)ethoxy]-(CAS DataBase Reference)
• NIST Chemistry Reference: Acetyl fluoride, 2,2-difluoro-2-[1,1,2,2-tetrafluoro-2-(fluorosulfonyl)ethoxy]-(4089-59-2)
• EPA Substance Registry System: Acetyl fluoride, 2,2-difluoro-2-[1,1,2,2-tetrafluoro-2-(fluorosulfonyl)ethoxy]-(4089-59-2)

Safety Data

• Hazardous Substances Data: 4089-59-2(Hazardous Substances Data)

Upstream product

• 433935-96-7 2,3,3,3-tetrafluoro-2-heptafluoropropyloxy-propionic acid 2-(2-fluorosulfonyl-ethoxy)-ethyl ester 
• 34805-58-8 perfluoro-(5-methyl-3,6-dioxa-7-octene)-sulfonyl fluoride 
• 84329-62-4 perfluoro-5,6-epoxy-3-oxahexanesulfonyl fluoride 

Relevant articles and documents

An entirely new methodology for synthesizing perfluorinated compounds: Synthesis of perfluoroalkanesulfonyl fluorides from non-fluorinated compounds

A new synthetic procedure for the preparation of perfluoroalkanesulfonyl fluorides utilizing liquid-phase direct fluorination with elemental fluorine has been developed. Direct fluorination of a partially fluorinated ester, which has alkanesulfonyl fluoride in the end, was synthesized from non-fluorinated counterparts and perfluorinated acid fluoride according to the PERFECT process, gave the desired perfluorinated product in moderate yield as well as by-products arising from CS bond cleavage. The results of the direct fluorination of some model substrates suggest that the CS bond cleavage occurred due to radical formation at the α-position rather than the β-position.

Process for producing a fluorine atom-containing sulfonyl fluoride compound

The present invention provides a process whereby fluorine atom-containing sulfonyl fluoride compound(s) useful as e.g. materials for ion-exchange membranes, can be produced efficiently and at low cost without structural limitations while solving the difficulties in production. Namely, the present invention provides a process which comprises reacting XSO2RA-E1 (1) with RB-E2 (2) to form XSO2RA-E—RB (3), then reacting (3) with fluorine in a liquid phase to form FSO2RAF-EF-RBF (4), and further, decomposing the compound to obtain FSO2RAF-EF1 (5), wherein RA is a bivalent organic group, E1 is a monovalent reactive group, RB is a monovalent organic group, E2 is a monovalent reactive group which is reactive with E1, E is a bivalent connecting group formed by the reaction of E1 with E2, RAF is a bivalent organic group formed by the fluorination of RA, etc., RBF is the same group as RB, etc., EF is a bivalent connecting group formed by the fluorination of E, etc., EF1 is a monovalent group formed by the decomposition of EF, and X is a halogen atom.