Water → 1-(2,6-Dichloro-4-trifluoromethylphenyl)-3-cyano-5-(2-methoxyethylamino)-4-trifluoromethylsulfonylpyrazole

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-bromo-1-(2,6-dichloro-4-trifluoromethylphenyl)-3-cyano-4-trifluoromethylsulfonylpyrazole (2.5 g, 4.8 mmol) in 1,4-dioxane and N,N-dimethylformamide was added 2-methoxyethylamine (0.74 g, 9.7 mmol) and potassium carbonate (1.35 g, 9.7 mmol). The resulting mixture was stirred at 50° C. for 4 hours, left to stand overnight, then poured into a mixture of water and dichloromethane. The organic phase was washed with water, dried (sodium sulfate), evaporated. The crude product was recrystallised from diisopropylether to give 1-(2,6-dichloro-4-trifluoromethylphenyl)-3-cyano-5-(2-methoxyethylamino)4-trifluoromethylsulfonylpyrazole as a white solid (Compound number 1-3, 1.30 g), mp 164° C.

Provenance & Evidence