Hydrochloric Acid → 5-(3-Methanesulfonyl-[1,2,4]triazol-4-yl)-2-methoxy-benzoic acid

Participants

Reaction Steps

Stir a mixture of 5-(3-methanesulfonyl-[1,2,4]triazol-4-yl)-2-methoxy-benzoic acid methyl ester (1.0 g, 3.2 mmol), lithium hydroxide (0.042 g, 3.6 mmol), and 25% water in tetrahydrofuran (30 mL) at reflux overnight. Cool and add 1N hydrochloric acid (3.6 mL) dropwise via syringe. Concentrate to remove the tetrahydrofuran and collect the precipitate by vacuum filtration. Wash the filter cake twice with water and hexane, and dry in vacuo overnight to give 0.79 g of 5-(3-methanesulfonyl-[1,2,4]triazol-4-yl)-2-methoxy-benzoic acid as a solid.

Provenance & Evidence