Hydrazine → 7-Bromoquinolin-3-amine
Reaktionsgleichung
[Br:1][C:2]1[CH:11]=[C:10]2[C:5]([CH:6]=[C:7]([N:12]3C(=O)C4C(=CC=CC=4)C3=O)[CH:8]=[N:9]2)=[CH:4][CH:3]=1.NN>C(O)C>[Br:1][C:2]1[CH:11]=[C:10]2[C:5]([CH:6]=[C:7]([NH2:12])[CH:8]=[N:9]2)=[CH:4][CH:3]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A suspension of 2-(7-bromoquinolin-3-yl)isoindoline-1,3-dione (10 g, 28.3 mmol) in ethanol (200 mL) was treated with hydrazine (1.777 mL, 56.6 mmol) then heated under reflux for 1 h. The mixture was allowed to cool, the precipitate was collected and washed with a little ethanol, and the filtrate was evaporated to a grey solid. The isolated solid was dissolved in warm ethanol and adsorbed onto silica gel. Purification of the solid by silica gel chromatography (50-100% ethyl acetate/hexanes) afforded the title compound (3.5 g, 56%). 1H NMR (400 MHz, DMSO-d6) δ ppm 5.83 (s, 2 H) 7.14 (d, J=2.53 Hz, 1 H) 7.49 (dd, J=8.84, 2.02 Hz, 1 H) 7.54-7.65 (m, 1 H) 7.94 (d, J=1.77 Hz, 1 H) 8.46 (d, J=2.78 Hz, 1 H).