Reacción #586134

Ecuación de reacción

water

2-chloro-4-(4-trifluoromethylpyrazolyl)benzonitrile

2,2,2-trifluoroethanthiol

potassium carbonate

→

2-(2,2,2-trifluoroethylthio)-4-(4-trifluoromethylpyrazolyl)benzonitrile

Rendimiento 57.1%

Disolventes

N,N-dimethylformamide

Condiciones de reacción

Tratamiento posterior

1. 1
   OtroThe resulting reaction mixture
2. 2
   Extracciónthe organic matters were extracted with 20 ml of ethyl acetate twice
3. 3
   Lavadowashed with 30 ml of water twice
4. 4
   Secadodried over anhydrous magnesium sulfate
5. 5
   workup.DISTILLATIONthe ethyl acetate was distilled off under reduced pressure
6. 6
   OtroPurification of the residue by silica gel column chromatography

Procedimiento

0.65 g (2.4 mmol) of 2-chloro-4-(4-trifluoromethylpyrazolyl)benzonitrile, 0.33 g (2.9 mmol) of 2,2,2-trifluoroethanthiol and 0.40 g (2.9 mmol) of potassium carbonate were stirred in 5 ml of N,N-dimethylformamide at room temperature overnight. The resulting reaction mixture was poured into 50 ml of water, and the organic matters were extracted with 20 ml of ethyl acetate twice. The ethyl acetate layers were combined, washed with 30 ml of water twice and dried over anhydrous magnesium sulfate, and the ethyl acetate was distilled off under reduced pressure. Purification of the residue by silica gel column chromatography afforded 0.48 g of 2-(2,2,2-trifluoroethylthio)-4-(4-trifluoromethylpyrazolyl)benzonitrile (yield 57.1%) as a milk-white powder (m.p. 90-91° C.).

Fuente