| 摘要 |
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: <?in-line-formulae description="In-line Formulae" end="lead"?>R<SUP>C</SUP>COOCHR<SUP>A</SUP>R<SUP>B</SUP> (3)<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>R<SUP>CF</SUP>COOCFR<SUP>AF</SUP>R<SUP>BF</SUP> (4)<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>R<SUP>AF</SUP>R<SUP>BF</SUP>C-O (5)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein each of R<SUP>A </SUP>and R<SUP>AF </SUP>are each a monovalent organic group such as an alkyl group, or R<SUP>A </SUP>and R<SUP>B </SUP>may be bonded to each other to form a bivalent organic group such as an alkylene group, R<SUP>AF </SUP>and R<SUP>BF </SUP>are a monovalent organic group such as a perfluoroalkyl group formed by fluorination of R<SUP>A </SUP>and R<SUP>B</SUP>, or they are bonded to each other to form a bivalent organic group such as a perfluoroalkylene group, and R<SUP>C </SUP>and R<SUP>CF </SUP>are each a monovalent organic group such as a perfluoroalkyl group which may contain an etheric oxygen atom.
|
