反应详情

A solution of ethyl 1-[(3,4-dichlorophenyl)methyl]-1H-1,2,3-triazole-4-carboxylate (Intermediate 10) (1.5 g, 5 mmol) and a 1N NaOH solution (7.5 mL, 1.5 eq) in ethanol (50 mL) was stirred at reflux for 48 hours. The solvent was evaporated and the residue was acidified with a 1N HCl solution (15 mL). The precipitate formed was filtered, washed with water and dried to give the title compound as a white solid (1.25 g, 92%). LC/MS: m/z 272 (M+H)+. Rt: 2.05 min.

1. temperatureat reflux for 48 hours
2. customThe solvent was evaporated
3. customThe precipitate formed
4. filtrationwas filtered
5. washwashed with water
6. customdried