反应详情

A mixture of 4A (1.7 g, 5.8 mmol), water (10 ml), ethanol (20 ml) and sodium hydroxide (0.5 g, 12.5 mmol) is heated under reflux with stirring. The reaction mixture is diluted with water (80 ml) and acidified with concentrated hydrochloric acid. The solid material is collected by filtration, washed with water and dried yielding white crystals, 1.3 g (85%), mp 186-188° C.

1. temperatureis heated
2. temperatureunder reflux
3. filtrationThe solid material is collected by filtration
4. washwashed with water
5. customdried
6. customyielding white crystals, 1.3 g (85%), mp 186-188° C.