2-(4-Fluorophenyl)-1-(pyridin-4-yl)ethanone → HCID 72819808, Verbindung

Reaktionsgleichung

[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][C:9]([C:11]2[CH:16]=[CH:15][N:14]=[CH:13][CH:12]=2)=[O:10])=[CH:4][CH:3]=1.[N:17]([O-])=[O:18].[Na+]>C(O)(=O)C.O>[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8](=[N:17][OH:18])[C:9]([C:11]2[CH:16]=[CH:15][N:14]=[CH:13][CH:12]=2)=[O:10])=[CH:4][CH:3]=1

Komponenten

Versuchsvorschrift

2-(4-Fluorophenyl)-1-pyridin-4-ylethanone (0.04 mol/8.6 g) (prepared as described in example 20, steps (a) and (b)) was dissolved in 80 ml of glacial acetic acid. NaNO2 (0.04 mol/2.76 g), dissolved in the smallest amount of H2O possible, was then added dropwise with ice-cooling and stirring. The mixture was then stirred at 0° C. for another 2 h. 500 ml of H2O were then added, and the mixture was stirred at room temperature for another 1 h. The title compound precipitated as a white powder. The precipitate was filtered off, washed with H2O and dried over P2O5 under reduced pressure. Yield: 5.9 g (60%)