反应详情

An acetonitrile solution (20 ml) of 3-trifluoromethyl-1H-pyrazole (0.5 g), dicerium ammonium nitrate (1.0 g) and N-chlorosuccinimide (0.7 g) was refluxed for 3 hours. After cooling, the reaction solution was washed with saturated aqueous solution of sodium thiosulfate and saturated aqueous solution of sodium chloride. After drying an organic layer with magnesium sulfate, the solvent was distilled off under the reduced pressure to obtain 4-chloro-3-trifluoromethyl-1H-pyrazole (0.9 g).

1. temperatureAfter cooling
2. washthe reaction solution was washed with saturated aqueous solution of sodium thiosulfate and saturated aqueous solution of sodium chloride
3. dry with materialAfter drying an organic layer with magnesium sulfate
4. distillationthe solvent was distilled off under the reduced pressure