反应详情

温度

90 °C

To a degassed solution of 6-amino-5-bromo-2-(6-fluoropyridin-3-yl)-N-methylbenzofuran-3-carboxamide (500 mg, 1.41 mmol) and 4-fluorophenol (460 mg, 5.21 mmol) in DMF/THF (1 mL/7 mL) was added K2CO3 (260 mg, 5.62 mmol) under N2. The mixture was heated at 90° C. for 8 h. The reaction mixture was concentrated in vacuo and it was extracted with EtOAc. It was washed with H2O, brine and dried over Na2SO4. After being concentrated, the residue was purified by column chromatography (PE:EA=4:1) to give the product of 6-amino-5-bromo-2-(6-(4-fluorophenoxy)pyridin-3-yl)-N-methylbenzofuran-3-carboxamide (380 mg, yield: 61%). 1H-NMR (CDCl3, 400 MHz) δ 8.61 (d, J=2.4 Hz, 1H), 8.23˜8.25 (m, 1H), 7.74 (s, 1H), 7.02˜7.09 (m, 4H), 6.91 (d, J=8.8 Hz, 1H), 8.85 (d, J=4.8 Hz, 1H), 5.76 (s, 1H), 4.20 (s, 2H), 2.95 (d, J=5.2 Hz, 3H). (M+H)+: 456/458.

1. concentrationThe reaction mixture was concentrated in vacuo and it
2. extractionwas extracted with EtOAc
3. washIt was washed with H2O, brine
4. dry with materialdried over Na2SO4
5. concentrationAfter being concentrated
6. customthe residue was purified by column chromatography (PE:EA=4:1)