反应详情

温度

140 °C

6-Methoxyquinolin-2(1H)-one (6.81 g, 38.9 mmol) was carefully added to POBr3 (18.9 g, 66.1 mmol) at 60° C., and the resulting solution was stirred at 140° C. for 2.5 h. The reaction mixture was cooled and poured onto crushed ice, and the solid was collected by filtration. Purification of this material on silica gel (gradient elution from 5 to 12% EtOAc in petroleum ether) afforded the title compound (4.57 g, 49.3%) as a solid. LCMS (ES+) m/z 238, 240 (M+H)+.

1. temperatureThe reaction mixture was cooled
2. additionpoured
3. customonto crushed ice
4. filtrationthe solid was collected by filtration
5. customPurification of this material on silica gel (gradient elution from 5 to 12% EtOAc in petroleum ether)