Reacción #586137

Ecuación de reacción

m-chloroperbenzoic acid

[2-difluoromethyl-5-(3-trifluoromethylpyrazolyl)phenyl] 2,2,2-trifluoroethyl sulfide

sodium sulfite

→

[2-difluoromethyl-5-(3-trifluoromethylpyrazolyl)phenyl] 2,2,2-trifluoroethyl sulfoxide

Rendimiento 97.4%

Disolventes

chloroform

chloroform

Condiciones de reacción

Tratamiento posterior

1. 1
   workup.STIRRINGthe reaction solution was stirred for 1 hour
2. 2
   workup.STIRRINGstirred at room temperature for 10 minutes
3. 3
   LavadoThe chloroform layer was washed with 20 ml of saturated aqueous sodium hydrogen carbonate three times
4. 4
   Secadodried over anhydrous magnesium sulfate
5. 5
   workup.DISTILLATIONthe chloroform was distilled off under reduced pressure

Procedimiento

To 0.37 g (1.0 mmol) of [2-difluoromethyl-5-(3-trifluoromethylpyrazolyl)phenyl] 2,2,2-trifluoroethyl sulfide (Compound No. V-295 of the present invention) in 5 ml of chloroform, 0.25 g (1.5 mmol) of m-chloroperbenzoic acid was added at 0° C. with stirring, and the reaction solution was stirred for 1 hour. The reaction solution was mixed with 10 ml of 10% aqueous sodium sulfite and stirred at room temperature for 10 minutes, and then 20 ml of chloroform was added. The chloroform layer was washed with 20 ml of saturated aqueous sodium hydrogen carbonate three times and dried over anhydrous magnesium sulfate, and the chloroform was distilled off under reduced pressure to obtain 0.38 g of [2-difluoromethyl-5-(3-trifluoromethylpyrazolyl)phenyl] 2,2,2-trifluoroethyl sulfoxide (yield 97.4%) as a yellow dough (nD2 1.4909).

Fuente