反应详情

Chloroform (13 ml) and triethylamine (2 ml) were added to 4-[(6,7-dimethoxy-4-quinazolinyl)oxy]-2-nitroaniline (100 mg) to prepare a solution. Triphosgene (96 mg) was added to the solution, and the mixture was stirred at room temperature for 30 min. 1-(Cyclohexylmethyl)-3-pyrrolidinamine (64 mg) was then added thereto, and the mixture was stirred at room temperature overnight. A saturated aqueous sodium hydrogencarbonate solution was added to the reaction solution, and the mixture was extracted with chloroform. The extract was washed with saturated brine and was then dried over anhydrous sodium sulfate. The solvent was removed by distillation under the reduced pressure. The residue was purified by thin-layer chromatography using chloroform/acetone for development. Diethyl ether was added to the purification product, and the precipitated crystal was collected by filtration and was washed to give the title compound (34 mg, yield 21%).

1. customto prepare a solution
2. stirringthe mixture was stirred at room temperature overnight
3. extractionthe mixture was extracted with chloroform
4. washThe extract was washed with saturated brine
5. dry with materialwas then dried over anhydrous sodium sulfate
6. customThe solvent was removed by distillation under the reduced pressure
7. customThe residue was purified by thin-layer chromatography
8. additionDiethyl ether was added to the purification product
9. filtrationthe precipitated crystal was collected by filtration
10. washwas washed