Ethylene Glycol → HCID 50877447, Verbindung

Reaktionsgleichung

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

Komponenten

Versuchsvorschrift

To a suspension of sodium hydride (60% suspension, 40 mg, 0.99 mmol) in DMF (3 mL) under nitrogen atmosphere was added ethylene glycol dropwise. The reaction mixture was stirred for 20 min before adding 4-chloro-6-bromoquinoline (200 mg, 0.825 mmol) in one portion. The reaction mixture was stirred at 90° C. for 22 h. Another 20 mg of sodium hydride was added after 16 h. The mixture was cooled to room temperature and concentrated in vacuo. The residue was dissolved in methanol and the solution was adsorbed on silica gel. Purification by flash chromatography on silica gel using a gradient of 0-10% methanol/dichloromethane afforded 127 mg of 2-(6-bromo-quinolin-4-yloxy)-ethanol as a white solid (57% yield): 1H NMR (DMSO-d6) δ 3.93 (q, 2H), 4.32 (t, 2H), 5.21 (t, 1H), 7.14 (d, 1H), 7.94 (m, 2H), 8.50 (d, 1H), 8.82 (d, 1H); MS (m/z) 268, 270 [M+H]+.