反应详情

温度

80 °C

In dimethylformamide (5 ml) was dispersed 60% sodium hydride in oil (0.23 g), to which was added triazole (0.59 g) under ice-cooling, followed by stirring for 15 minutes. To the resultant mixture was added a dimethylformamide solution (1 ml) of 2-[(1S)-1-(3,4,5,6-tetrahydro-2H-pyran-2-yloxy)ethyl]-2-(2,4-difluorophenyl)oxirane (0.40 g), which was heated for three hours at 80° C. The reaction mixture was cooled, after which were added cold water (1.0 ml) and ethyl aceate (50 ml), and the mixture was shaken. The aqueous layer was subjected to extraction with ethyl acetate twice. Ethyl acetate layers were combined, washed with a saturated aqueous sodium chloride solution and dried over anhydrous sodium sulfate, followed by distilling off the solvent under reduced pressure. The residue was purified by means of a silica gel chromatography (eluent, dichloromethane:ethyl acetate:acetone=6:1:1). The resultant waxy product was further subjected to reprecipitation twice from ethyl acetate-hexane to afford (3S)-2-(2,4-difluorophenyl)-3-(3,4,5,6-tetrahydro-2H-pyran-2-yloxy)-1-(1H-1,2,4-triazol-1-yl)-2-butanol (0.22 g) as a colorless waxy product.

1. temperaturecooling
2. temperatureThe reaction mixture was cooled
3. stirringthe mixture was shaken
4. extractionThe aqueous layer was subjected to extraction with ethyl acetate twice
5. washwashed with a saturated aqueous sodium chloride solution
6. dry with materialdried over anhydrous sodium sulfate
7. distillationby distilling off the solvent under reduced pressure
8. customThe residue was purified by means of a silica gel chromatography (eluent, dichloromethane:ethyl acetate:acetone=6:1:1)
9. customThe resultant waxy product was further subjected to reprecipitation twice from ethyl acetate-hexane