1-[4-bromo-2-(pyridine-2-carbonyl)-phenyl]-5-chloromethyl-1H-[1,2,4]triazole-3-carboxylic acid ethyl ester 、
sodium hydroxide 以to give 1-[4-bromo-2-(2-pyridinecarbonyl)-phenyl]-5-chloromethyl-1H-1,2,4-triazole-3-carboxylic acid as crystals的产率得到1-[4-bromo-2-(pyridine-2-carbonyl)-phenyl]-5-chloromethyl-1
H-[1,2,4]triazole-3-carboxylic acid