Hydrochloric Acid → 3,5-diethoxy-4-(1-methyl-1H-pyrazol-4-yl)benzoic acid

Participants

Reaction Conditions

Reaction Steps

3,5-Diethoxy-4-(1-methyl-1H-pyrazol-4-yl)-benzoic acid methyl ester (895 mg) was dissolved in a mixed methanol/THF solution (16 mL, 5/3), aqueous 1 M NaOH solution (6 mL) was added to it, and stirred at 50° C. for 5 hours. The reaction liquid was cooled to room temperature, and aqueous 1 M HCl solution (6 mL) was added to it, and the solvent was evaporated away under reduced pressure. The resulting solid was taken out through filtration, washed with water and ether, and dried under reduced pressure to obtain the title compound as a pale yellow solid.

Provenance & Evidence