| abstract |
PROBLEM TO BE SOLVED: To provide a method for producing a fluoroalkylsulfonyl group-containing compound which does not substantially require a water removing step and contains almost no impurity ionic compound. SOLUTION: The following formula: (Wherein, R f is each independently a linear or branched fluorinated alkyl group having 1 to 12 carbon atoms, X is oxygen, nitrogen or carbon, and when X is oxygen, n is 1; n is 2 when X is nitrogen; n is 3 when X is carbon; and M is an alkali metal). A method for producing an alkali metal salt, comprising mixing a corresponding acid with an alkali metal compound in a non-aqueous solvent and neutralizing the mixture. |