反应详情

温度

60 °C

Sodium hydride (60 wt %, 5.80 g) was added to dimethyl sulfoxide (40 ml). The mixture was stirred at 60° C. for 30 min and was then cooled to room temperature. Next, 4-amino-3-chlorophenol hydrochloride (13.05 g) was added thereto. The mixture was stirred at room temperature for 10 min. 4-Chloro-6,7-dimethoxyquinazoline (8.14 g), which is a chloroquinazoline derivative synthesized by a conventional method as described, for example, in J. Am. Chem. Soc., 68, 1299 (1946) or J. Am. Chem. Soc., 68, 1305 (1946), was then added thereto. The mixture was stirred at 110° C. for 30 min. Water was then added to the reaction solution, followed by extraction with chloroform. The chloroform layer was then washed with a saturated aqueous sodium hydrogencarbonate solution and was dried over anhydrous sodium sulfate. The solvent was removed by distillation under the reduced pressure, and methanol was added to the residue to prepare a suspension. The precipitated crystal was collected by suction filtration to give 9.13 g (yield 76%) of the title compound.

1. temperaturewas then cooled to room temperature
2. stirringThe mixture was stirred at room temperature for 10 min
3. customsynthesized by a conventional method
4. addition, 68, 1305 (1946), was then added
5. stirringThe mixture was stirred at 110° C. for 30 min
6. extractionfollowed by extraction with chloroform
7. washThe chloroform layer was then washed with a saturated aqueous sodium hydrogencarbonate solution
8. dry with materialwas dried over anhydrous sodium sulfate
9. customThe solvent was removed by distillation under the reduced pressure, and methanol
10. additionwas added to the residue
11. customto prepare a suspension
12. filtrationThe precipitated crystal was collected by suction filtration