C(=O)([O-])[O-].[K+].[K+].C([O:10][C:11]1[C:16]([F:17])=[CH:15][CH:14]=[CH:13][C:12]=1[CH:18]1[CH2:20][CH2:19]1)(=O)C.Cl>CO>[CH:18]1([C:12]2[CH:13]=[CH:14][CH:15]=[C:16]([F:17])[C:11]=2[OH:10])[CH2:20][CH2:19]1Potassium carbonate (911 mg, 6.60 mmol) was added to a solution of 2-cyclopropyl-6-fluorophenyl acetate (640 mg, 3.30 mmol) in methanol (4 ml), and the mixture was stirred at room temperature for 1 hour. After 1M hydrochloric acid was added to the reaction mixture to adjust pH to 2, this was extracted with acetic acid. The organic layer was combined and washed with a saturated aqueous NaCl solution, followed by drying with anhydrous sodium sulfate. After the solid was removed by filtration, the filtrate was concentrated to obtain 497 mg of 2-cyclopropyl-6-fluorophenol.
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