Aniline → Suberanilic Acid
反応式
[C:1]([OH:12])(=O)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][C:8]([OH:10])=[O:9].[NH2:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1>C1(C)C=CC=CC=1>[C:8]([OH:10])(=[O:9])[CH2:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2][C:1]([NH:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)=[O:12]参加物
4
実験手順
Suberic acid (Compound 1, 174.2 g, 1.0 mole), aniline (Compound 2, 85.8-94.9 g), and toluene (0.1-0.2 L) are combined, heated to reflux and refluxed for a minimum of 60 hours. The reaction is quenched at reflux by adjusting the pH to ≧11 with 10% sodium hydroxide solution. The aqueous phase is separated. The organic layer is combined with toluene (0.11-0.13 L) and water (0.3-0.4 L), and the aqueous layer is separated. The aqueous layers from the extractions and toluene (0.11-0.13 L) are combined, settled, and then separated. The aqueous layer is extracted twice with toluene (0.2-0.3 L) at 60-70° C. The aqueous layer is adjusted at 20-30° C. to a pH of 5.8-6.2, using hydrochloric acid and 10% sodium hydroxide solution as needed. The batch is filtered, washed with chilled water (0.2-0.3 L) and then washed with chilled isopropanol. The wet cake is dried at a maximum of 65° C. under vacuum to yield suberanilic acid.