PROCESS FOR PRODUCTION OF FLUORINATED SULFONYL FLUORIDES

WIPO Patent Application WO2005003062

A3

The invention aims at providing a process by which fluorinated sulfonyl fluorides having various molecular structures can be obtained efficiently and inexpensively with production problems solved. The invention provides a process which comprises reacting a compound of the general formula (1F): (FSO2-)nR(-E-R)m with fluorine in a liquid phase to obtain a compound of the general formula (2): (FSO2-)nR(-E-R)m and decomposing this compound into a compound of the general formula (3): (FSO2-)nR(-E)m, wherein R is a (n+m) valent organic group having two or more carbon atoms; R is a group derived from R through fluorination or the like; Rand R are each a monovalent fluorinated organic group or the like; E is -COOCH2- or the like; E is -COOCF2- or the like; E is -COF or the like; n is an integer of 2 or above; and m is an integer of 1 or above.