Potassium Carbonate → HCID 9888801, compound

Participants

Reaction Conditions

Reaction Steps

Oxalyl chloride (8.7 ml) was added to a mixture of 4,6-dimethylnicotinic acid (15.1 g) and dichloromethane (150 ml) under ice cooling, followed by stirring at 15 to 20° C. for one hour. A mixture of 4-[3,5-bis(trifluoromethyl)-1H-pyrazol-1-yl]aniline (23.59 g) and dichloromethane (300 ml) was added to the resulting reaction solution, followed by stirring at room temperature for 18 hours. An aqueous 20% potassium carbonate solution (about 200 ml) was added to the reaction solution, from which the organic layer was separated. Subsequently, the aqueous layer was extracted with dichloromethane (about 50 ml). The organic layer and the extract solution were combined together and subsequently concentrated under reduced pressure. The resulting residue was recrystallized from a mixed solvent (270 ml) of ethanol and water (2:1, respectively), to obtain 4,6-dimethyl-4′-[3,5-bis(trifluoromethyl)-1H-pyrazol-1-yl]nicotinanilide (26.70 g) as bluish white solid.

Provenance & Evidence