Hydrochloric Acid → HCID 57513842, compound

Participants

Reaction Steps

A mixture of 0.54 g ethyl 5-(4-fluorophenyl)-1-(2,2,2-trifluoroethyl)-1H-pyrazole-3-carboxylate (1.7 mmol) and 0.21 g lithium hydroxide monohydrate (5.09 mmol) in 5 ml THF, 5 ml MeOH, and 2 mL water was stirred at room temperature for 2 h. The reaction was acidified with 1N HCl, was extracted with methanol/dichloromethane, dried over Na2SO4 and evaporated to provide 5-(4-fluorophenyl)-1-(2,2,2-trifluoroethyl)-1H-pyrazole-3-carboxylic acid as a white solid. LCMS (method A) 289.2 (M+H), 287.3 (M−H).

Provenance & Evidence