[CH3:1][C:2]([CH3:4])=[O:3].[CH3:5][CH:6]([CH2:8][C:9]([CH3:11])=[O:10])[CH3:7].[CH3:12]C(C)=O>>[OH:3][C:2]1[CH:4]=[CH:7][C:6]2[C:5](=[CH:12][CH:11]=[C:9]([OH:10])[CH:8]=2)[CH:1]=1Sixty parts by weight of acetone was added to 100 parts by weight of the oily phase containing the oxidation product obtained in Example 8, (1) to prepare an MIBK/acetone mixed oily phase which was subjected to acid cleavage by the following method to obtain 2,6-dihydroxynaphthalene.
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