| 摘要 |
PROBLEM TO BE SOLVED: To provide an industrially advantageous method for producing tetrafluoroterephthalic acid difluoride and a tetrafluoroterephthalic acid diester compound. SOLUTION: This method for producing tetrafluoroterephthalic acid difluoride is provided by reacting tetrachloroterephthalic acid dichloride with potassium fluoride in sulfolane in the presence of 0.3-0.6 fold moles of water based on the tetrachloroterephthalic acid dichloride. The method for producing tetrafluoroterephthalic acid diester expressed by formula (2) [wherein, R is a 1-6C alkyl] is provided by reacting the tetrafluoroterephthalic acid difluoride with an alcoholic compound expressed by formula (1) [wherein, R is the same as the above]. COPYRIGHT: (C)2007,JPO&INPIT
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