反应详情

温度

20 °C

To a degassed solution of 6-amino-5-bromo-2-(6-(4-fluorophenoxy)pyridin-3-yl)-N-methylbenzofuran-3-carboxamide (100 mg, 0.22 mmol) and DMAP (10 mg, 0.02 mmol) in Pyridine (5 ml) under N2 was added MsCl (32 mg, 0.38 mmol) at 0° C. Then it was stirred at 20° C. for 15 h. The reaction mixture was concentrated and extracted with DCM. After it was washed with brine, dried over Na2SO4 and concentrated, the residue was purified by prep-TLC to give 5-bromo-2-(6-(4-fluorophenoxy)pyridin-3-yl)-N-methyl-6-(methylsulfonamido)benzofuran-3-carboxamide (100 mg, yield: 85%). 1H-NMR (CDCl3, 400 MHz) δ 9.65 (s, 1H), 8.73 (s, 1H), 8.54 (d, J=4.8 Hz, 1H), 8.39 (d, J=2.8 Hz, 1H), 8.03 (s, 1H), 7.84 (s, 1H), 7.33˜7.38 (m, 4H), 7.28 (d, J=8.8 Hz, 1H). (M+H)+: 534/536.

1. concentrationThe reaction mixture was concentrated
2. extractionextracted with DCM
3. washAfter it was washed with brine
4. dry with materialdried over Na2SO4
5. concentrationconcentrated
6. customthe residue was purified by prep-TLC