反应详情

To a solution of 2-chloro-6-methylbenzonitrile (2.0 g, 13 mmol) and N-bromosuccinimide (2.6 g, 15 mmol) in carbon tetrachloride (20 mL) was added azobisisobutyronitrile (0.20 g, 1.2 mmol). The mixture was refluxed for 3 h and then cooled, diluted with dichloromethane and washed with water and brine. The organic phase was dried over anhydrous sodium sulfate, filtered, and concentrated in vacuo. The resultant oil was purified via flash column chromatography (ethyl acetate:hexane, 0:100 to 30:70) to yield white solid product (1.4 g, 46%). 1H NMR (400 MHz, CDCl3) δ 7.43-7.59 (m, 3H), 4.64 (s, 2H).

1. temperatureThe mixture was refluxed for 3 h
2. temperaturecooled
3. washwashed with water and brine
4. dry with materialThe organic phase was dried over anhydrous sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. customThe resultant oil was purified via flash column chromatography (ethyl acetate:hexane, 0:100 to 30:70)