反应详情

温度

23 °C

To a stirred solution of 4-methyl-2-[4-(trifluoromethyl)phenyl]-2H-1,2,3-triazole 1-oxide (i.e. the product of Step A, 5.22 g, 21.5 mmol) in dichloromethane (100 mL) was added trimethyloxonium tetrafluoroborate (4.13 g, 27.9 mmol). The reaction mixture was stirred at 23° C. for 65 h, then concentrated under reduced pressure to afford a crude mixture of the title compound as a brown oil which was used directly in the next step without further purification.

1. concentrationconcentrated under reduced pressure
2. customto afford a crude