[Al+3].[Cl-].[Cl-].[Cl-].[C:5](Cl)(=[O:7])[CH3:6].[F:9][C:10]1[CH:11]=[CH:12][C:13]([O:17][CH3:18])=[C:14]([OH:16])[CH:15]=1.O>ClCCCl>[F:9][C:10]1[CH:15]=[C:14]([OH:16])[C:13]([O:17][CH3:18])=[CH:12][C:11]=1[C:5](=[O:7])[CH3:6]To a suspension of AlCl3 (1.17 g; 8.79 mmol) in 1,2-dichloroethane (2 mL) was added acetyl chloride (0.55 g; 7.03 mmol). After 10 min stirring was added dropwise a solution of 5-fluoro-2-methoxyphenol (0.50 g; 3.52 mmol) in 1,2-dichloroethane (2 mL). The reaction mixture was stirred overnight at 40° C. The mixture was then poured on iced water and extracted with diethylether. The organic phases were combined, washed with brine, dried (Na2SO4) and concentrated to afford 582 mg (90%) of the title compound as an off-white solid.
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