反应详情

To a stirred solution of 5-(4-aminophenyl)-2,2-dimethyl-4-(4-(quinolin-2-ylmethoxy)phenyl)furan-3(2H)-one (0.07 g, 0.16 mmol) in DCM (5 mL) were added Ac2O (0.018 mL, 0.19 mmol) and TEA (0.04 mL, 0.32 mmol) at 0° C. under N2 atmosphere. The reaction mixture was stirred at RT for 14 h. The reaction mixture was diluted with water and extracted with DCM (2×15 mL). Combined organic layers were washed with water (2×5 mL), brine and dried over anhydrous Na2SO4. After filtration and evaporation, the crude material was purified by silica gel column chromatography to afford N-(4-(5,5-dimethyl-4-oxo-3-(4-(quinolin-2-ylmethoxy)phenyl)-4,5-dihydrofuran-2-yl) phenyl)acetamide (20 mg, 26%), as an off white solid. 1H NMR (500 MHz, CDCl3): δ 8.22 (d, J=8.5 Hz, 1H), 8.08 (d, J=7.9 Hz, 1H), 7.84 (d, J=8.4 Hz, 1H), 7.74 (t, J=8.2 Hz, 1H), 7.68 (d, J=8.2 Hz, 1H), 7.64 (d, J=8.2 Hz, 2H), 7.56 (t, J=8.5 Hz, 1H), 7.48 (d, J=7.4 Hz, 2H), 7.22 (d, J=7.5 Hz, 2H), 7.08 (d, J=8.9 Hz, 2H), 5.42 (s, 2H), 2.22 (s, 3H), 1.58 (s, 6H). MS: [M+Na]: m/z=501.3, [M+H]: m/z=479.3. HPLC: 95.9% (RT-2.32 min), Column: Acquity BEH-C-18, 50×2.1 mm, 1.7 um. Mobile Phase: 0.025% TFA in Water (A), ACN (B), Flow rate: 0.5 ml/min (Gradient).

1. extractionextracted with DCM (2×15 mL)
2. washCombined organic layers were washed with water (2×5 mL), brine
3. dry with materialdried over anhydrous Na2SO4
4. filtrationAfter filtration and evaporation
5. customthe crude material was purified by silica gel column chromatography