Hydrochloric Acid → 5-[4-fluoro-2-(trifluoromethyl)phenyl]-4-methyl-1H-pyrrole-3-carboxylic acid

Participants

Reaction Conditions

Reaction Steps

To a solution of methyl 5-[4-fluoro-2-(trifluoromethyl)phenyl]-4-methyl-1H-pyrrole-3-carboxylate (0.23 g, 0.77 mmol) in methanol (4.0 ml) was added 5N NaOH (3.0 ml) and the mixture was stirred at 80° C. for 2.0 h. The reaction mixture was cooled to room temperature and added 2N HCl (8.0 ml). The mixture was diluted with ethyl acetate and washed with water and brine, then dried over sodium sulfate and concentrated on a rotary evaporator. The resulting residue was purified by silica-gel column chromatography (1:1 to 1:9 hexane:ethyl acetate) to give the title compound (211 mg, 96%) as a white solid.

Provenance & Evidence