tert-Butoxy bis(dimethylamino)methane → 6-[2-(dimethylamino)ethenyl]-5-(4-methoxybenzoyl)-2(1H)-pyridinone
Reaktionsgleichung
[CH3:1][O:2][C:3]1[CH:18]=[CH:17][C:6]([C:7]([C:9]2[CH:10]=[CH:11][C:12](=[O:16])[NH:13][C:14]=2[CH3:15])=[O:8])=[CH:5][CH:4]=1.[CH3:19][N:20]([CH:22](N(C)C)OC(C)(C)C)[CH3:21]>O1CCOCC1>[CH3:19][N:20]([CH3:22])[CH:21]=[CH:15][C:14]1[NH:13][C:12](=[O:16])[CH:11]=[CH:10][C:9]=1[C:7](=[O:8])[C:6]1[CH:5]=[CH:4][C:3]([O:2][CH3:1])=[CH:18][CH:17]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A mixture containing 50 g of 5-(4-methoxybenzoyl)-6-methyl-2(1H)-pyridinone, 400 ml of p-dioxane and 40 ml of bis(dimethyamino)-t-butoxymethane was refluxed with stirring for 5 and 1/2 hours. The reaction mixture was allowed to cool and the separated crystalline product was collected, washed with ethanol and dried in a vacuum oven at 80°-85° C., to yield 65.8 g of 6-[2-(dimethylamino)ethenyl]-5-(4-methoxybenzoyl)-2(1H)-pyridinone, m.p. 216°-218° C.