Dimethylformamide → 4-(3-(4-(7-(5-cyanofuran-2-yl)-4-morpholino-quinazolin-2-yl)-3-fluorophenyl)ureido)-N,N-dimethyl-benzamide

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a 50 mL round bottom flask, 5-(2-chloro-4-morpholino-quinazolin-7-yl)furan-2-carbonitrile (0.12 g, 0.00035 mol), 4-(3-(3-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ureido)-N,N-dimethyl-benzamide (0.144 g, 0.00053 mol), cesium carbonate (0.228 g, 0.0007 mol), DMF (3 mL) and water (3 mL) were added. The reaction mixture was degassed with nitrogen for 5-10 min. To the same reaction flask, Pd(PPh3)2Cl2 (0.013 g, 0.0000175 mol) was added and again degassed with nitrogen for 5-10 min. The reaction mixture was stirred at 95° C. for 2 h. To the cooled reaction mixture, water was added and extracted with ethyl acetate. The organic layer was separated, washed with water, brine and dried over anhydrous sodium sulfate. The organic layer was evaporated under reduced pressure to afford the crude product. The crude product was purified by column chromatography using 60-120 silica gel and 2-5% MeOH in chloroform to obtain the title compound [0.013 g, 6%]. 1H NMR (400 MHz, DMSO-d6): δ 9.21 (s, 1H), 9.04 (s, 1H), 8.27 (d, J=2.0 Hz, 1H), 8.19-8.13 (m, 2H), 7.93 (dd, J′=1.6, J″=8.4 Hz, 1H), 7.82 (d, J=4.0 Hz, 1H), 7.64 (d, J=3.6 Hz, 2H), 7.61 (d, J=2.0 Hz, 1H), 7.54 (d, J=8.4 Hz, 2H), 7.28 (dd, J′=8.8 Hz, J″=2.0 Hz, 2H), 3.83 (s, 8H), 2.96 (s, 6H). LC-MS (ESI): Calculated mass: 605.2; Observed mass: 606.2 (RT: 1.17 min).

Herkunft & Nachweise