Reaction Steps
To a stirred solution of dicyclohexyl(2′,4′,6′-triisopropylbiphenyl-2-yl)phosphine (27.0 mg, 0.056 mmol), 2,5-dimorpholinopyridin-3-amine (37.0 mg, 0.140 mmol), 2,5-dimorpholinoaniline (55.0 mg, 0.21 mmol), 4-chloro-5-fluoro-3,8-dimethyl-2-(pyridin-2-yl)quinoline (100.0 mg, 0.35 mmol) and Pd2dba3 (13.0 mg, 0.014 mmol) in toluene (3.5 mL) was added sodium t-butoxide (84.0 mg, 0.87 mmol). The reaction mixture was heated to 120° C. and stirred for 45 min. The reaction was cooled to rt and diluted with water (25 mL). The mixture was extracted with EtOAc (3×10 mL) and DCM (1×10 mL). The organic layers were dried over magnesium sulfate, filtered and concentrated in vacuo. The crude product was purified by column chromatography on silica gel (0 to 100% EtOAc in DCM) to give the desired products N-(2,5-di-4-morpholinylphenyl)-5-fluoro-3,8-dimethyl-2-(2-pyridinyl)-4-quinolinamine. 1H NMR (400 MHz, CDCl3) δ ppm 8.69 (1H, br. m.), 8.22 (1H br m), 8.02-8.12 (1H, m), 7.89 (1H, br. m.), 7.40 (2H, m), 7.28 (1H, m), 6.98-7.15 (2H, m), 6.24 (1H, br. s.), 3.87-4.00 (4H, br m), 3.80 (4H, br m), 3.09 (8H, br. m.), 2.77 (3H, s), 2.32 (3H, s); Mass Spectrum (ESI) m/e=514.3 (M+1). Further elution gave N-(2,5-di-4-morpholinyl-3-pyridinyl)-5-fluoro-3,8-dimethyl-2-(2-pyridinyl)-4-quinolinamine. 1H NMR (400 MHz, CDCl3) δ ppm 8.68 (1H, ddd, J=4.9, 1.8, 1.0 Hz), 8.08 (1H, d, J=7.8 Hz), 7.90 (1H, m), 7.82 (1H, br d), 7.60 (1H, d, J=2.5 Hz), 7.40-7.48 (1H, m), 7.37 (1H, m), 7.07 (1H, dd, J=13.6, 7.9 Hz), 6.47 (1H, br. s.), 3.88-4.00 (4H, m), 3.75-3.85 (4H, m), 3.23 (4H, br. s.), 3.03-3.13 (4H, m), 2.78 (3H, s), 2.31 (3H, s); Mass Spectrum (ESI) m/e=515.2 (M+1).
