反应详情

4-Methyl-5,6-dimethoxy-8-nitroquinoline (6.21 g, 25 mmol) was dissolved in ethanol (100 mL) containing concentrated hydrochloric acid (4.7 mL). The mixture was heated under reflux for 21 hours, then cooled to 10° and filtered. The solid was washed with cold (10°) ethanol (18 mL) followed by petroleum ether (15 mL) and air-dried to yield 5.41 g (92%) of the title compound, mp 253°-257° (dec).

1. temperatureThe mixture was heated
2. temperatureunder reflux for 21 hours
3. temperaturecooled to 10°
4. filtrationfiltered
5. washThe solid was washed with cold (10°) ethanol (18 mL)
6. customair-dried