Process for producing fluorinated sulfonyl fluoride compound

摘要

It is an object of the present invention to solve difficulty in production and to provide a process to obtain fluorinated sulfonyl fluoride compound having various molecular structures efficiently at a low cost. That is, the present invention provides a process which comprises reacting (FSO₂-)_nR^A(-E-R^B)_m (1F) with fluorine in a liquid phase to form (FSO₂-)_nR^AF(-E^F-R^BF)_m (2), and decomposing this compound to obtain (FSO₂-)_nR^AF(-E^F1)_m (3), provided that R^A is a (n+m)valent organic group having at least two carbon atoms, R^AF is a group having R^A fluorinated, or the like, each of R^B and R^BF is a fluorinated monovalent organic group, or the like, E is -COOCH₂- or the like, E^F is -COOCF₂- or the like, E^Fl is -COF or the like, n is an integer of at least 2, and m is an integer of at least 1.