[F:1][C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][C:3]=1[OH:12].Br[CH2:14][C:15]1[CH:20]=[CH:19][C:18]([F:21])=[CH:17][CH:16]=1.C([O-])([O-])=O.[K+].[K+].C(O)C>O>[F:1][C:2]1[CH:11]=[CH:10][C:5]([C:6]([O:8][CH3:9])=[O:7])=[CH:4][C:3]=1[O:12][CH2:14][C:15]1[CH:20]=[CH:19][C:18]([F:21])=[CH:17][CH:16]=1Charge methyl 4-fluoro-3-hydroxybenzoate (519 mg, 3.05 mmol), 4-(bromomethyl)-1-fluorobenzene (577 mg, 3.05 mmol), K2CO3 (843 mg, 6.10 mmol) and ethanol (10 mL) to a flask. The mixture was then stirred at room temperature overnight. Water was added to the reaction mixture at 0° C., filtered, and the solid dried and purified by flash column chromatograph to give 571 mg of the title compound (67%). 1H NMR (400 MHz, CDCl3): δ 3.90 (3H, s), 5.13 (2H, s), 7.06-7.15 (3H, m), 7.41-7.45 (2H, m), 7.63-7.67 (1H, m), 7.71 (1H, dd, J=2.0 Hz, 8.4 Hz).
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