反应详情

温度

40 °C

A mixture of 4-(4-chloro2-fluoroanilino)-7-(3-ethoxycarbonylpropoxy)6-methoxyquinazoline (220 mg, 0.5 mmol) in aqueous sodium hydroxide solution (4 ml of a 2M solution, 8 mmol), water (2 ml) and methanol (0.5 ml) was stirred and heated at 40° C. for 3 hours. The mixture was allowed to cool and was then acidified with 2M hydrochloric acid. The resulting white precipitate was collected by filtration and washed with acetone and water to give 7-(3carboxypropoxy)-4-(4-chloro-2-fluoroanilino)-6-methoxyquinazoline (170 mg, 83%).

1. temperatureto cool
2. filtrationThe resulting white precipitate was collected by filtration
3. washwashed with acetone and water