反应详情

To a solution of 4-(2-bromoethoxy)-3-fluorobenzoyl chloride (1.07 g, 3.80 mmol) and anhydrous AlCl3 (1.01 g, 7.60 mmol) in dry dichloromethane (18 mL) was added anisole (822 mg, 7.60 mmol) in 2 mL dichloromethane at 0° C. After stirring at rt for 6 h, the mixture was poured into 3 N HCl and extracted with dichloromethane twice. The extracts were combined, washed with sat. NaHCO3 and brine, dried over Na2SO4, filtered, concentrated, and purified by column chromatography over silica gel (eluent: petroleum ether/ethyl acetate=10/1 to 5/1) to give 1.05 g (77% yield) of the subtitle compound as a white solid. 1H NMR (400 MHz, CDCl3) δ 7.79 (d, J=8.8 Hz, 2H), 7.58 (d, J=11.6 Hz, 1H), 7.55 (d, J=8.4 Hz, 1H), 7.03 (dd, J=8.0 Hz, 8.4 Hz, 1H), 6.98 (d, J=9.2 Hz, 2H), 4.44 (t, J=6.4 Hz, 2H), 3.90 (s, 3H), 3.70 (t, J=6.4 Hz, 2H).

1. extractionextracted with dichloromethane twice
2. washwashed with sat. NaHCO3 and brine
3. dry with materialdried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated
6. custompurified by column chromatography over silica gel (eluent: petroleum ether/ethyl acetate=10/1 to 5/1)