Sodium Hydroxide → 4'-[3-(2,6-Dichloro-phenyl)-5-isopropyl-3H-[1,2,3]triazol-4-ylmethoxy]-2'-methyl-biphenyl-4-carboxylic Acid

Participants

Reaction Steps

A solution of 4′-[3-(2,6-dichloro-phenyl)-5-isopropyl-3H-[1,2,3]triazol-4-ylmethoxy]-2′-methyl-biphenyl-4-carboxylic acid methyl ester (4.55 g, 1 equiv) and 1N NaOH (44.6 mL, 5 equiv) in MeOH (200 mL) is heated to 75° C. for 1 h. The reaction mixture is cooled to room temperature and is concentrated under reduced pressure. The residue is dissolved in water (200 mL) and the solution is acidified with 5N HCl. The resulting precipitate is filtered and dried under reduced pressure to give the title compound (4.21 g, 95%). ES/MS m/e (35Cl/37Cl) 496.3/498 (M+1).

Provenance & Evidence