Patent ID: 6969776

Claim:
A process for producing a fluorinated ketone of the following formula (5), which comprises: reacting a compound of the following formula (3) having a fluorine content of at least 30 mass %, with fluorine in a liquid phase to obtain a compound of the following formula (4), and then, subjecting the ester linkage of the compound of the formula (4) to a dissociation reaction: R C COOCHR A R B (3) R CF COOCFR AF R BF (4) R AF R BF Câ•Oâ€ƒâ€ƒ(5) wherein each of R A and R AF which may be the same or different, is a monovalent organic group, provided that when R A and R AF are different, R AF is a monovalent organic group formed by fluorination of R A , and each of R B and R BF which may be the same or different, is a monovalent organic group, provided that when R B and R BF are different, R BF is a monovalent organic group formed by fluorination of R B , and at least one of R AF and R BF is a fluorinated monovalent organic group; or R A and R B may be bonded to each other to form a bivalent organic group, and in such a case, R AF and R BF are bonded to each other to form a bivalent organic group, the bivalent organic group formed by R AF and R BF is a fluorinated bivalent organic group, the bivalent organic group formed by R A and R B and the bivalent organic group formed by R AF and R BF may be the same or different, provided that when they are different, the bivalent organic group formed by R AF and R BF is a group formed by fluorination; and each of R C and R CF which may be the same or different, is a monovalent organic group, provided that when R C and R CF are different, R CF is a monovalent organic group formed by fluorination of R C , and provided that at least one of R A , R B and R C is a group having an atom or an atomic group which can be substituted by a fluorine atom, and at least one of R A , R B and R C is a group having a fluorine atom, wherein the dissociation reaction of the ester linkage is carried out in the absence of a solvent, using a solid nucleophilic agent.