3-[(2-Methyl-4-oxo-4H-chromen-8-yl)methylene]pentane-2,4-dione → 6-Acetyl-7-methyl-5-(2-methyl-4-oxo-4H-chromen-8-yl)-5,8-dihydropyrido[2,3-d]pyrimidin-4(3H)-one
Reaktionsgleichung
[CH3:1][C:2]1[O:3][C:4]2[C:9]([C:10](=[O:12])[CH:11]=1)=[CH:8][CH:7]=[CH:6][C:5]=2[CH:13]=[C:14]([C:18](=[O:20])[CH3:19])[C:15](=O)[CH3:16].[NH2:21][C:22]1[N:27]=[CH:26][NH:25][C:24](=[O:28])[CH:23]=1>C(O)(C)C>[C:18]([C:14]1[CH:13]([C:5]2[CH:6]=[CH:7][CH:8]=[C:9]3[C:4]=2[O:3][C:2]([CH3:1])=[CH:11][C:10]3=[O:12])[C:23]2[C:24](=[O:28])[NH:25][CH:26]=[N:27][C:22]=2[NH:21][C:15]=1[CH3:16])(=[O:20])[CH3:19]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
500 mg (1.85 mmol) of 3-[(2-methyl-4-oxo-4H-chromen-8-yl)methylene]pentane-2,4-dione are mixed with 308 mg (2.77 mmol) of 6-aminopyrimidin-4(3H)-one, dissolved in 10 ml of isopropanol and heated under reflux under argon for 2 days. The mixture is then concentrated and the residue is recrystallized from methanol. 341 mg (51% of theory) of the title compound are obtained as a yellow solid.