Pyridine → N-{4-chloro-3-[1-(propionylamino)ethyl]phenyl}-1-methyl-3-(pentafluoroethyl)-4-(trifluoromethyl)-1H-pyrazole-5-carboxamide

Participants

Reaction Steps

Propionyl chloride (21 mg, 0.22 mmol, 1.3 eq.) in THF (1 ml) was added to a solution of N-[3-(1-aminoethyl)-4-chlorophenyl]-1-methyl-3-(pentafluoroethyl)-4-(trifluoromethyl)-1H-pyrazole-5-carboxamide (80 mg, 0.17 mmol) and pyridine (18 mg, 0.22 mmol, 1.3 eq.) in THF (3 ml). After 28 h at room temperature, the mixture was concentrated under reduced pressure and purified by column chromatography (hexane/ethyl acetate) to give N-{4-chloro-3-[1-(propionylamino)ethyl]phenyl}-1-methyl-3-(pentafluoroethyl)-4-(trifluoromethyl)-1H-pyrazole-5-carboxamide (80 mg, 89%).

Provenance & Evidence