反应详情

[2-[(E)-2-[4-(Trifluoromethyl)phenyl]ethenyl]-1,3-oxazol-4-yl]methylmethanesulfonate (500 mg, 1.44 mmol), 4-[4-(1H-1,2,3-triazol-1-yl)butyl]phenol (344 mg, 1.58 mmol) and tetra(n-butyl) ammonium bromide (45 mg, 0.14 mmol) were added to THF (5 ml), and 1N-aqueous sodium hydroxide solution (3.0 mL, 3.00 mmol) was added. The mixture was stirred at room temperature for 5 hours. 10% Brine (10 ml) was added and the mixture was extracted with ethyl acetate (10 ml). The organic layer was washed with 10% brine (10 ml). The aqueous layers were combined and extracted with ethyl acetate (10 ml). The organic layers were combined and concentrated. Ethanol (15 ml) was added to the residue and the mixture was refluxed under heating for dissolution. After allowing to cool to room temperature and stirring, the mixture was stirred for 1 hour under ice-cooling. The precipitated crystals were collected by filtration, washed with cold-ethanol (2 ml) and dried under reduced pressure to give 1-[4-[4-[[2-[(E)-2-[4-(trifluoromethyl)phenyl]ethenyl]-1,3-oxazol-4-yl]methoxy]phenyl]butyl]-1H-1,2,3-triazole (556 mg, 1.19 mmol, yield 81%).

1. additionwas added
2. extractionthe mixture was extracted with ethyl acetate (10 ml)
3. washThe organic layer was washed with 10% brine (10 ml)
4. extractionextracted with ethyl acetate (10 ml)
5. concentrationconcentrated
6. additionEthanol (15 ml) was added to the residue
7. temperaturethe mixture was refluxed
8. temperatureunder heating for dissolution
9. temperatureto cool to room temperature
10. stirringstirring
11. stirringthe mixture was stirred for 1 hour under ice-
12. temperaturecooling
13. filtrationThe precipitated crystals were collected by filtration
14. washwashed with cold-ethanol (2 ml)
15. customdried under reduced pressure