Phenylacetyl chloride → HCID 2759000、化合物

反応式

[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]

参加物

反応条件

温度: 0 °C

実験手順

In a 500 mL, 3-neck round-bottom flask, equipped with a pressure equalizing dropping funnel, thermometer, gas inlet tube and provisions for magnetic stirring, 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, then 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, 12.9 g (90%) of 1-(3-fluoro-4 methoxyphenyl)-2-phenyl-ethan-1-one 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).