Ethanol → 4-(3-Phenyl-2,3,4,8-tetrahydrochromeno[6,7-e][1,3]oxazin-7-yl)phenol
Reaktionsgleichung
[OH:1][C:2]1[CH:18]=[CH:17][C:5]([C:6]2[CH2:7][O:8][C:9]3[C:14]([CH:15]=2)=[CH:13][CH:12]=[C:11](O)[CH:10]=3)=[CH:4][CH:3]=1.[NH2:19][C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1.[CH2:26]=[O:27].[CH2:28](O)C>>[C:20]1([N:19]2[CH2:28][C:12]3[CH:13]=[C:14]4[C:9](=[CH:10][C:11]=3[O:27][CH2:26]2)[O:8][CH2:7][C:6]([C:5]2[CH:17]=[CH:18][C:2]([OH:1])=[CH:3][CH:4]=2)=[CH:15]4)[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1Komponenten
5
Versuchsvorschrift
4′,7-Dihydroxyisoflav-3-ene (501 mg, 2.09 mmol) was dissolved in ethanol (15 ml). Aniline (0.25 ml, 2.74 mmol) was added followed by formaldehyde solution (2 ml, 0.03 mol, 37% wt.). The reaction was stirred at room temperature for 3 days. The white precipitate was collected to afford the title compound (53 mg, 7%).