Process for producing fluorinated ketone

   
   

The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process. Namely, it is 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.sup.C COOCHR.sup.A R.sup.B (3) R.sup.CF COOCFR.sup.AF R.sup.BF (4) R.sup.AF R.sup.BF C.dbd.O (5) wherein each of R.sup.A and R.sup.AF are each a monovalent organic group such as an alkyl group, or R.sup.A and R.sup.B may be bonded to each other to form a bivalent organic group such as an alkylene group, R.sup.AF and R.sup.BF are a monovalent organic group such as a perfluoroalkyl group formed by fluorination of R.sup.A and R.sup.B, or they are bonded to each other to form a bivalent organic group such as a perfluoroalkylene group, and R.sup.C and R.sup.CF are each a monovalent organic group such as a perfluoroalkyl group which may contain an etheric oxygen atom.

 
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