反应详情

温度

110 °C

Sodium hydride (400 mg of an 80% suspension in paraffin oil, 13.3 mmol) was added to a solution of phenol (1.26 g, 13.3 mmol) in dry N-methylpyrrolidone (20 ml) and the mixture stirred for 10 minutes. 7-Benzyloxy-4-chloro-6-methoxyquinazoline hydrochloride (1.6 g, 4.7 mmol), (prepared as described for the starting material in Example 1), was then added and the reaction mixture heated at 110° C. for 2 hours. The mixture was allowed to cool, water was added and the mixture extracted with ethyl acetate (3×100 ml). The combined extracts were then washed with 2M sodium hydroxide solution, water and brine. Removal of the solvent under reduced pressure gave 7-benzyloxy-6-methoxy-4-phenoxyquinazoline (1.6 g, 95%) as a yellowish solid.

1. additionwas then added
2. temperatureto cool
3. extractionthe mixture extracted with ethyl acetate (3×100 ml)
4. washThe combined extracts were then washed with 2M sodium hydroxide solution, water and brine
5. customRemoval of the solvent under reduced pressure