| abstract |
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. n That is, the present invention provides a process which comprises reacting (FSO 2 -) n R A (-E-R B ) m (1F) with fluorine in a liquid phase to form (FSO 2 -) n R AF (-E F -R BF ) m (2), and decomposing this compound to obtain (FSO 2 -) n R 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 -COOCH 2 - or the like, E F is -COOCF 2 - or the like, E F1 is -COF or the like, n is an integer of at least 2, and m is an integer of at least 1. |