反应详情

温度

40 °C

To a solution of (E)-6-fluoro-4-(4-fluorobenzylideneamino)isobenzofuran-1(3H)-one (4 g, 14.6 mmol) and 1-methyl-1H-1,2,4-triazole-5-carbaldehyde (4.1 g, 36.9 mmol) in ethyl propionate (220 mL) was added EtONa ((sodium 940 mg, 40.9 mmol), in 70 mL ethanol) at 37° C., then the mixture was stirred at 40° C. for 6 hr. The resulting mixture was evaporated under reduced pressure and extracted with ethyl acetate (100 mL×4). The extract was concentrated to dryness to give a crude product, which was purified by column chromatography (silica gel, dichloromethane:methanol=200:1 to 100:1) to obtain a green solid (1.02 g, yield 14%). LC-MS (ESI) m/z: 413 (M+1)+.

1. customThe resulting mixture was evaporated under reduced pressure
2. extractionextracted with ethyl acetate (100 mL×4)
3. concentrationThe extract was concentrated to dryness
4. customto give a crude product, which
5. customwas purified by column chromatography (silica gel, dichloromethane:methanol=200:1 to 100:1)