Hydrochloric Acid → Methyl 2-amino-3-nitro-4-(trifluoromethyl)benzoate
反応式
C([NH:4][C:5]1[C:14]([N+:15]([O-:17])=[O:16])=[C:13]([C:18]([F:21])([F:20])[F:19])[CH:12]=[CH:11][C:6]=1[C:7]([O:9][CH3:10])=[O:8])(=O)C.Cl>CO>[NH2:4][C:5]1[C:14]([N+:15]([O-:17])=[O:16])=[C:13]([C:18]([F:19])([F:20])[F:21])[CH:12]=[CH:11][C:6]=1[C:7]([O:9][CH3:10])=[O:8]参加物
4
反応条件
- 温度
- 55 °C
実験手順
A mixture of methyl 2-(acetylamino)-3-nitro-4-(trifluoromethyl)benzoate (1.00 g, 3.27 mmol) and 10% hydrochloric acid in methanol solution (10 ml) was heated at 55° C. for 16 h. The reaction mixture was concentrated in vacuo. The residue was diluted with aqueous saturated sodium bicarbonate and extracted with ethyl acetate. The extracts were washed with water, dried over magnesium sulfate and concentrated in vacuo. The residue was purified by column chromatography on silica gel with a 30% ethyl acetate/n-hexane to give 780 mg (0.030 mol 90%) of the title compound as a yellow powder.