Oxalyl chloride → 1-(3-chloro-2-pyridinyl)-3-(trifluoromethyl)-1H-pyrazole-5-carbonyl Chloride

Participants

Reaction Steps

To a solution of 268 mg (0.92 mmol) of 1-(3-chloro-2-pyridinyl)-3-(trifluoromethyl)-1H-pyrazole-5-carboxylic acid (which can be prepared according to Example 6) in 5 mL of dichloromethane was added 160 μL (1.84 mmol) of oxalyl chloride and two drops of DMF in sequence at room temperature. The mixture was then stirred at the same temperature for about 1 hour. The crude mixture was then concentrated in vacuo. The title material is typically used without additional purification or characterization.

Provenance & Evidence