反应详情

温度

0 °C

2-(2,4-Difluorophenyl)-5-methyl-2H-1,2,3-triazole-4-methanol (i.e. the product of Step B, 0.70 g, 3.1 mmol) was suspended in 48% hydrobromic acid in water (16 mL). The mixture was heated to reflux with stirring for 2 h. The reaction mixture was diluted with water, cooled to 0° C. and basified with 50% aqueous sodium hydroxide solution. The reaction mixture was extracted with ethyl acetate, dried (MgSO4) and concentrated under reduced pressure to obtain the title compound (0.75 g) as a pale yellow oil. The title compound was used directly in the next step without further purification.

1. temperatureThe mixture was heated
2. temperatureto reflux
3. extractionThe reaction mixture was extracted with ethyl acetate
4. dry with materialdried (MgSO4)
5. concentrationconcentrated under reduced pressure