反应详情

温度

40 °C

To a solution of (5)-1-(5-tert-butylisoxazol-3-yl)-3-{3-[6-methoxy-7-(pyrrolidin-3-yloxy)quinazolin-4-yloxy]phenyl}urea (0.198 g, 0.38 mmol) and N,N-diisopropylethylamine (0.5 mL) in CH2Cl2 (10 mL) was added 2,2-difluoroethyl trifluoromethanesulfonate (0.128 g. 0.6 mmol) and it was stirred at 40° C. for 1 hour. It was quenched with saturated NaHCO3 and extracted with CH2Cl2. Extracts were dried over MgSO4 and concentrated under reduced pressure. It was purified by silica gel chromatography with 70-85% EtOAc/hexane as eluants to afford (S)-1-(5-tert-Butylisoxazol-3-yl)-3-(3-{7-[1-(2,2-difluoroethyl)pyrrolidin-3-yloxy]-6-methoxyquinazolin-4-yloxy}phenyl)urea as solid (0.098 g, 44%). 1H NMR (300 MHz, CDCl3) δ 9.4 (s, 1H), 8.62 (s, 1H), 7.81 (s, 1H), 7.65 (t, 1H), 7.54 (s, 1H), 7.40 (t, 1H), 7.33 (m, 1H), 7.19 (s, 1H), 7.00 (d, 1H), 5.93 (tt, 1H), 5.87 (s, 1H), 5.05 (m, 1H), 4.03 (s, 3H), 3.20 (m, 1H), 3.89-3.09 (m, 4H), 2.8 (m, 1H), 2.5 (m, 1H), 2.15 (m, 1H), 1.33 (s, 9H); LC-MS (ESI) m/z 583 (M+H)+.

1. customIt was quenched with saturated NaHCO3
2. extractionextracted with CH2Cl2
3. dry with materialExtracts were dried over MgSO4
4. concentrationconcentrated under reduced pressure
5. customIt was purified by silica gel chromatography with 70-85% EtOAc/hexane as eluants