反应详情

温度

115 °C

To a stirred solution of 2-amino-4,6-difluoro-benzamide (1.03 g, 6.00 mmol) and 2,6-dimethyl-pyridine-4-carbaldehyde (0.81 g, 6.00 mmol) in N,N-dimethyl acetamide (15 mL), sodium hydrogen sulfite (58.5 wt %, 1.31 g, 7.20 mmol) and p-toluenesulfonic acid monohydrate (0.11 g, 0.60 mmol) were added and the reaction mixture was stirred at 115° C. for 16 hours. The solvent was evaporated in vacuo, water was added, and the precipitated solid was filtered to give 2-(2,6-dimethyl-pyridin-4-yl)-5,7-difluoro-3H-quinazolin-4-one as a yellow solid, which was used in the next step without further purification. Yield: 0.72 g (42%).

1. customThe solvent was evaporated in vacuo, water
2. additionwas added
3. filtrationthe precipitated solid was filtered