反应详情

温度

0 °C

Under ice-cooling and an argon stream, to a mixture of ethyl 3-[3-methoxy-4-(2-methyl-1,3-oxazol-5-yl)phenyl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylate (1000 mg) in DMF (15 mL) was added sodium hydride (60%, 115 mg), and the mixture was stirred at 0° C. for 30 min. 1-Chloro-4-(chloromethoxy)benzene (694 mg) was added, and the mixture was stirred at 0° C. for 1 hr. Saturated aqueous ammonium chloride was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with saturated aqueous sodium hydrogen carbonate solution and brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (440 mg).

1. temperatureUnder ice-cooling
2. stirringthe mixture was stirred at 0° C. for 1 hr
3. extractionthe mixture was extracted with ethyl acetate
4. washThe extract was washed with saturated aqueous sodium hydrogen carbonate solution and brine
5. dry with materialdried over anhydrous magnesium sulfate
6. customthe solvent was evaporated under reduced pressure
7. customThe residue was purified by silica gel column chromatography (ethyl acetate/hexane)