| 摘要 |
PROBLEM TO BE SOLVED: To provide a new 1,1,3,3-tetrahalo-1,3-dihydroisobenzofuran compound which is useful as an intermediate for medicinal drugs, agricultural chemicals, functional materials and so on, and also provide a production method for the compound. SOLUTION: 1,1,3,3-tetrahalo-1,3-dihydroisobenzofuran compounds represented by general formula (1) (wherein, Y is H, F, Cl, Br, I or CN; X is F, Cl, Br or I). In the formula (1), a group -CH2 Y can be located at 4- or 5-position. The compound having the group -CH2 Y at its 4-position is obtained from 1,1,3,3- tetrafluoro-1,3-dihydroisobenzofuran, and the compounds having the group CH2 Y at its 5-position is induced by the fluorination of chloro radical of 5- methyl-1,1,3,3-tetrachloro-1,3-dibydroisobenzofuran obtained from 4-methylphthalic acid.
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