Phenylacetyl chloride → HCID 2759000, 화합물

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[Cl-].[Al+3].[Cl-].[Cl-].[F:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][C:7]=1[O:12][CH3:13].[C:14]1([CH2:20][C:21](Cl)=[O:22])[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1>C(Cl)(Cl)Cl>[F:5][C:6]1[CH:11]=[C:10]([C:21](=[O:22])[CH2:20][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[CH:9]=[CH:8][C:7]=1[O:12][CH3:13]

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온도: 0 °C

실험 절차

A suspension of aluminum chloride (9.4 g, 70.5 mmol) in a solution of 2-fluoroanisole (6.6 mL, 58.8 mmol) and anhydrous chloroform (200 mL) was cooled to 0° C. under a blanket of dry nitrogen. A solution of phenylacetyl chloride (8.6 mL, 64.7 mmol) in anhydrous chloroform (50 mL) was added to the vigorously stirred suspension over 20 minutes keeping the reaction temperature <5° C. The yellowish solution was stirred at 0° C. for 1 hour, poured into ice (200 mL) and stirred without temperature control for 16 hours. The layers were separated, and the aqueous layer was extracted with dichloromethane (2×100 mL). The combined organic solution was dried over magnesium sulfate, filtered, and the solvent was evaporated under reduced pressure. The resulting solid was recrystallized from boiling hexane to yield, upon filtration and drying, 1-(3-fluoro-4 methoxyphenyl)-2-phenyl-ethan-1-one (12.9 g, 90%) as white crystals: 1H NMR (CDCl3 /300 MHz) δ 7.82-7.72 (m, 2H), 7.35-7.24 (m, 5H), 6.98 (dd, J=8.46, 8.26 Hz, 1H), 4.22 (s, 2H), 3.94 (s, 3H). 19F NMR (CDCl3 /282.2 MHz) -134.875 (m).