| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for purification by which a high-purity objective substance can efficiently be obtained from a fluoro-β-dicarbonyl compound containing a by-product such as a difluoro derivative without emitting an acidic gas, or the like, by decomposition. SOLUTION: This method for purifying a fluoro-β-dicarbonyl compound is characterized as follows. A mixture containing the fluoro-β-dicarbonyl compound represented by the formula (1) R<SP>1</SP>COC R<SP>2</SP>FCOR<SP>3</SP>(wherein, R<SP>1</SP>is hydrogen atom, a substituted or an unsubstituted alkyl group or a substituted or an unsubstituted aryl group; R<SP>2</SP>is hydrogen atom, a halogen atom, a substituted or an unsubstituted alkyl group or a substituted or an unsubstituted aryl group; R<SB>3</SB>is hydrogen atom, a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted aryl group, a substituted or an unsubstituted alkoxy group or a substituted or an unsubstituted aryloxy group; or at least two of R<SP>1</SP>, R<SP>2</SP>and R<SP>3</SP>together may form a part of a cyclic structure with or without interposition of a heteroatom) and a polyfluoro compound in which hydrogen atoms bound to the carbon atom of the fluoro-β-dicarbonyl compound are further substituted with≥1 fluorine atoms is brought into contact with an acid-receiving agent. COPYRIGHT: (C)2005,JPO&NCIPI
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