[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:12]2[NH:13][C:14]([CH2:17][C:18]([O:20]CC)=[O:19])=[N:15][N:16]=2)[CH:6]=[CH:7][C:8]=1[N+:9]([O-:11])=[O:10].[OH-].[Na+]>CO>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:12]2[NH:13][C:14]([CH2:17][C:18]([OH:20])=[O:19])=[N:15][N:16]=2)[CH:6]=[CH:7][C:8]=1[N+:9]([O-:11])=[O:10]The mixture of 140 mg of ethyl [5-(3-methoxy-4-nitrophenyl)-4H-[1,2,4]triazol-3-yl]acetate, 5 ml of methanol and 1 ml of 1N sodium hydroxide was stirred at room temperature for 2 hours. Afterwards, the volatile fractions are removed on a rotary evaporator, the residue is diluted with 10 ml of water and adjusted to pH 5 using 1N hydrochloric acid. The solid was filtered off with suction after the stirring.
Loading…