US 7,297,815 B2 · Process for producing fluorinated sulfonyl fluoride compound

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. That is, the present invention provides a process which comprises reacting (FSO2—)nRA(-E-RB)m (1F) with fluorine in a liquid phase to form (FSO2—)nRAF(-EF-RBF)m (2), and decomposing this compound to obtain (FSO2—)nRAF(-EF1)m (3), provided that RA is a (n+m) valent organic group having at least two carbon atoms, RAF is a group having RA fluorinated, or the like, each of RB and RBF is a fluorinated monovalent organic group, or the like, E is —COOCH2— or the like, EF is —COOCF2— or the like, EF1 is —COF or the like, n is an integer of at least 2, and m is an integer of at least 1.

Claims15

Dependent claims

A process for producing a compound represented by the following formula (3a-1), which comprises oxidizing a compound represented by the formula (7-a) by reacting it with chlorine in a solvent comprising water to obtain a compound represented by the following formula (1-a), fluorinating the compound represented by the formula (1-a) to obtain a compound represented by the following formula (1F-a), reacting the compound represented by the formula (1F-a) with fluorine in a liquid phase to obtain a compound represented by the following formula (2-a), and carrying out a decomposition reaction of an ester bond in the compound represented by the formula (2-a):

(Y-S)pRC(—CH2OCOR—RBF)q (7-a)
(ClSO2—)pRC(—CH2OCO—RBF)q (1-a)
(FSO2—)pRC(—CH2OCO—RBF)q (1F-a)
(FSO2—)pRCF(—CF2OCO—RBF)q (2-a)
(FSO2—)pRCF(—COF))q (3a-1)
wherein Y is a hydrogen atom, a monovalent organic group or a —SO3−M+ group (wherein M is an alkali metal atom), RC is a (p+q)valent organic group having at least two carbon atoms and containing no fluorine atom, RCF is a group having RC perfluorinated and represents a perfluorinated (p+q)valent organic group having at least two carbon atoms, RBF is a perfluorinated monovalent organic group, p is 2 or 3, and q is 1 or 2.

3 more elements

Dependencies are inferred from the claim text.

Process for producing fluorinated sulfonyl fluoride compound

Life of this patent

Process for producing fluorinated sulfonyl fluoride compound

Life of this patent

Abstract

Claims15