Hydrochloric Acid → 1-(3-fluorophenyl)-1H-pyrazole-3-carboxylic acid

Participants

Reaction Steps

To a solution of ethyl 1-(3-fluorophenyl)pyrazole-3-carboxylate (234 mg, 1 mmol) in THF was added 3.0 mL of 1.0M of LiOH (3.0 mmol). The resulting mixture was stirred at room temperature for 3 h and then 1.0 M of HCl was added to adjust pH to 1.0. The organics were extracted with EtOAc (2×100 mL), followed by drying over MgSO4 and concentrated under reduced pressure to give a white solid (198 mg, 96%), which was used for next step without further purification.

Provenance & Evidence