反应详情

LiOH (80 mg, 1.9 mmol) was added to a stirred solution of 1-phenyl-1H-[1,2,3]triazole-4-carboxylic acid ethyl ester (130 mg, 0.6 mmol) in THF:H2O (1:1, 4 mL), and the resulting mixture was stirred at room temperature for 45 min. The reaction mixture was concentrated under reduced pressure to get the residue. Cold water was then added and acidified it with 10% aqueous HCl, filtered the solid precipitated to afford 40 mg (35.4% yield) of 1-phenyl-1H-[1,2,3]triazole-4-carboxylic acid. 1H NMR (DMSO-d6): δ 13.4 (bs, 1H), 9.4 (s, 1H), 8.0 (d, 2H), 7.7 (t, 2H), 7.6 (t, 1H).

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. customto get the residue
3. filtrationfiltered the solid
4. customprecipitated