Hydrochloric Acid → (2-Amino-5-benzoylphenyl)acetic acid
Reaktionsgleichung
[C:1]([C:9]1[CH:10]=[C:11]2[C:15](=[CH:16][CH:17]=1)[NH:14][C:13](=[O:18])[CH2:12]2)(=[O:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[OH-:19].[Na+].Cl>>[NH2:14][C:15]1[CH:16]=[CH:17][C:9]([C:1](=[O:8])[C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[CH:10][C:11]=1[CH2:12][C:13]([OH:18])=[O:19]Komponenten
4
Versuchsvorschrift
A mixture of 1.0 g. (0.004 mole) of 5-benzoylindolin-2-one and 30 ml. of 3 N sodium hydroxide was refluxed for 0.5 hour. The reaction mixture was cooled, acidified to pH 6 with 3 N hydrochloric acid and slightly acidic solution was extracted with chloroform. The chloroform extracts were dried (magnesium sulfate) and concentrated to a solid. Recrystallization from ethanol-water gave 0.9 g. (84.5%) of pure product which melted at 143°-145° C.