HCID 12736922, Verbindung → HCID 12736925, Verbindung
Reaktionsgleichung
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[O:14][C:13]3[C:12](=[O:15])[C:11]([C:16]([O:18]CC)=[O:17])=[CH:10][NH:9][C:8]=3[C:7](=[O:21])[C:6]=2[CH:22]=1>Cl>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[O:14][C:13]3[C:12](=[O:15])[C:11]([C:16]([OH:18])=[O:17])=[CH:10][NH:9][C:8]=3[C:7](=[O:21])[C:6]=2[CH:22]=1Komponenten
3
Edukt 1
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A suspension of ethyl 8-chloro-4,10-dihydro-4,10-dioxo-1H-1-benzopyrano[3,2-b]pyridine-3-carboxylate (3.0 g, 0.0094 mole) in 6N hydrochloric acid (100 ml ) was refluxed under nitrogen for 15 hrs., cooled and filtered. The residue was washed with water and with acetone. Recrystallization from DMF gave white crystals (2.4 g, 87%), m.p. 325°-327°.
Aufarbeitung
- temperaturewas refluxed under nitrogen for 15 hrs
- temperature, cooled