[OH-].[Na+].O[CH2:4][C:5]1[C:6]([CH2:11][OH:12])=[CH:7][CH:8]=[CH:9][CH:10]=1>>[CH2:11]1[O:12][CH2:4][C:5]2[C:6]1=[CH:7][CH:8]=[CH:9][CH:10]=2The procedure of Example 15 was performed except that the pH of the reaction mixture was regulated to 12 by use of sodium hydroxide. The reaction mixture was sampled for analysis. Formation of α,α′-dihydroxy-o-xylene was not observed. Instead, phthalan was formed at a yield of 96% based on α,α′-dichloro-o-xylene.
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