反应详情

25 mL of phosphorus oxychloride is added to 2.7 g (11.34 mmol) of 6-bromo-4-methyl-1H-quinolin-2-one (Example 1b) and the reaction mixture is refluxed for 2 hours. After cooling, the mixture is added batchwise to 250 mL of 10% NH3 solution, the precipitate formed is filtered off, washed with water, and dried in the circulating air dryer at 30° C. Yield: 2.7 g (93% of theoretical); C10H7BrClN (M=256.526); calc.: molpeak (M+H)+: 256/258/260 (BrCl); found: molpeak (M+H)+: 256/258/260 (BrCl); Rf value: 0.95 (silica gel, DCM/MeOH 9:1).

1. temperaturethe reaction mixture is refluxed for 2 hours
2. temperatureAfter cooling
3. customthe precipitate formed
4. filtrationis filtered off
5. washwashed with water
6. customdried in the circulating air dryer at 30° C