HCID 332828, Verbindung → 4-(1,3-Dioxaindan-5-yl)oxane-2,6-dione
Reaktionsgleichung
[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([CH:10]([CH2:15][C:16]([OH:18])=[O:17])[CH2:11][C:12]([OH:14])=O)=[CH:9][C:4]=2[O:3][CH2:2]1>C(OC(=O)C)(=O)C>[O:1]1[C:5]2[CH:6]=[CH:7][C:8]([CH:10]3[CH2:11][C:12](=[O:14])[O:18][C:16](=[O:17])[CH2:15]3)=[CH:9][C:4]=2[O:3][CH2:2]1Komponenten
3
Edukt 1
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
3-(1,3-benzodioxol-5-yl)pentanedioic acid (2 g, 7.9 mmoles) was suspended in acetic anhydride (50 ml) and refluxed for two hours. The reaction mixture was allowed to cool to room temperature and the solvent was removed under reduced pressure. The residue was triturated with ether to give the product (1.3 g, 70%). 1H NMR (DMSO-d6) δ 6.91 (m, 1H), 6.89 (m, 1H), 6.72 (m, 1H), 6.01 (s, 2H), 3.53–3.41 (m, 1H), 3.07–2.89 (m, 4H).
Aufarbeitung
- temperaturerefluxed for two hours