Toluene → 1-(4-(7-(5-Methylfuran-2-yl)-4-morpholino-quinazolin-2-yl)phenyl)-3-(4-(2-oxopyrrolidin-1-yl)phenyl)urea

참여 물질

반응 조건

반응 단계

To a 50 mL round bottom flask, 2-Chloro-7-(5-methyl-furan-2-yl)-4-morpholin-4-yl-quinazoline (0.12 g, 0.00036 mol; prepared as described in Example 2; Scheme 6B), 1-(4-(2-oxopyrrolidin-1-yl)phenyl)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)urea (0.184 g, 0.00043 mol; prepared according to the methods described in Scheme 9), cesium carbonate (0.296 g, 0.0009 mol), toluene (7 mL), EtOH (7 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 (0.0128 g, 0.000018 mol) was added and again degassed with nitrogen for 5-10 min. The reaction mixture was stirred at 95° C. for 3 h. The reaction mixture was cooled and diluted with chloroform. The organic layer was separated, washed with water, brine and dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure to afford the crude product. The crude product was purified by flash column chromatography using 230-400 silica gel, 2% MeOH in chloroform. The compound was further purified by prep TLC using 4% MeOH in chloroform to yield the title compound [0.015 g, 7%]. 1H NMR (300 MHz, DMSO-d6): δ 8.92 (s, 1H), 8.75 (s, 1H), 8.43 (d, J=7.2 Hz, 2H), 8.02 (d, J=8.1 Hz, 2H), 7.75 (d, J=8.4 Hz, 1H), 7.62 (t, J=8.7 Hz, 4H), 7.48 (d, J=9 Hz, 2H), 7.17 (d, J=3.3 Hz, 1H), 6.32 (d, J=2.4 Hz, 1H), 3.83 (m, 10H), 2.47 (d, J=8.4 Hz, 2H), 2.41 (s, 3H), 2.08 (m, 2H); LC-MS (ESI): Calculated mass: 588.2; Observed mass: 589.2 (RT: 0.13 min).

출처 및 근거