[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C(N(CC)CC)C.[Br:15][C:16]1[CH:17]=[C:18]([CH:22]=[CH:23][CH:24]=1)[C:19](Cl)=[O:20]>C(OCC)C>[Br:15][C:16]1[CH:17]=[C:18]([CH:22]=[CH:23][CH:24]=1)[C:19]([O:7][C:1]1[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1)=[O:20]To a solution of phenol (2.3 g, 24.4 mmol) and triethylamine (3.2 g, 32 mmol) in diethyl ether (150 mL) was slowly added 3-bromobenzoyl chloride (5 g, 22.8 mmol) and the mixture was heated to reflux for about 1 hour. The mixture was cooled, filtered, and the filtrate was successively washed with water, 0.2N hydrochloric acid, and saturated aqueous sodium carbonate. The organic layer was dried (MgSO4), filtered, and concentrated under vacuum. The residue was triturated with hexane and dried under vacuum to provide the desired product. 1H NMR (500 MHz, CDCl3) δ 7.22 (m, 3H), 7.42 (m, 3H), 7.79 (d, J=8 Hz, 1H), 8.15 (d, J=8 Hz, 1H), 8.37 (br s, 1H).
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