p-Toluenesulfonic acid → HCID 22241183, Verbindung
Reaktionsgleichung
[CH3:1][O:2][CH2:3][C:4]([NH:6][C:7]1[CH:15]=[CH:14][CH:13]=[C:12]2[C:8]=1[C:9](=[O:29])[N:10]([CH:17]1[CH2:22][CH:21]([O:23]C(=O)C)[C:20](=[O:27])[NH:19][C:18]1=[O:28])[C:11]2=[O:16])=[O:5].C1(C)C=CC(S(O)(=O)=O)=CC=1>CO>[CH3:1][O:2][CH2:3][C:4]([NH:6][C:7]1[CH:15]=[CH:14][CH:13]=[C:12]2[C:8]=1[C:9](=[O:29])[N:10]([CH:17]1[CH2:22][CH:21]([OH:23])[C:20](=[O:27])[NH:19][C:18]1=[O:28])[C:11]2=[O:16])=[O:5]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of 3-[4-methoxyacetylamino-1,3-dioxoisoindolin-2-yl]-2,6-dioxo-5-acetoxypiperidine (1.26 g, 3.5 mmol) and p-toluenesulfonic acid (0.33 g, 1.8 mmol) in methanol (20 mL) is heated at reflux for 5 hours. The solvent is removed in vacuo to give 3-[4-methoxyacetylamino-1,3-dioxoisoindolin-2-yl]-2,6-dioxo-5-hydroxypiperidine which is further purified by column chromatography.