反应详情

温度

20 °C

To a mixture of N-[4-(2,4-difluorophenoxy)-3-[1-methyl-6-oxo-5-(2-trimethylsilylethynyl)pyridin-3-yl]phenyl]ethanesulfonamide (100 mg, 0.19 mmol) in EtOH (10 mL) was added K2CO3 (157 mg, 1.14 mmol). The reaction was stirred at 20° C. for 12 h and poured into H2O (30 mL) and extracted with DCM (20 mL×3). The organic phase was washed with brine (20 mL), dried over anhydrous MgSO4 and concentrated in vacuo. The residue was purified by prep-HPLC to afford the title compound (48 mg, 56%) as an off-white solid. 1H NMR (CDCl3, 400 MHz): δ 7.90 (d, J=2.4 Hz, 1H), 7.69 (d, J=2.4 Hz, 1H), 7.26 (d, J=2.8 Hz, 1H), 7.14-7.11 (m, 1H), 7.01-6.94 (m, 2H), 6.89-6.86 (m, 1H), 6.77 (d, J=8.8 Hz, 1H), 6.55 (s, 1H), 3.67 (s, 3H), 3.34 (s, 1H), 3.14 (q, J=7.2 Hz, 2H), 1.42 (t, J=7.2 Hz, 3H). LCMS (M+H)+=445.

1. extractionextracted with DCM (20 mL×3)
2. washThe organic phase was washed with brine (20 mL)
3. dry with materialdried over anhydrous MgSO4
4. concentrationconcentrated in vacuo
5. customThe residue was purified by prep-HPLC