反应详情

Ethanesulfonyl chloride (25.4 mg, 0.198 mmol) was added to 4-[5-amino-2-(2,4-difluorophenoxyl)phenyl]-2-methyl-2,7-naphthyridin-1-one (25.0 mg, 0.066 mmol) and TEA (20.0 mg, 0.198 mmol) in DCM (5 mL) at 0° C. The mixture was stirred at room temperature for 18 h and then purified by preparative HPLC to give the title compound (8.5 mg, 27.4%) as yellow gum. 1H NMR (Methanol-d4, 400 MHz) δ 9.54 (s, 1H), 8.68 (d, J=4.4 Hz, 1H), 8.00 (s, 1H), 7.66 (d, J=8.4 Hz, 1H), 7.38-7.33 (m, 2H), 7.09-6.99 (m, 2H), 6.96-6.94 (d, J=8.4 Hz, 1H), 6.91-6.85 (m, 1H), 3.70 (s, 3H), 3.15 (q, J=7.6 Hz, 2H), 1.35 (t, J=7.6 Hz, 3H). LCMS: 472.1 (M+H)+

1. custompurified by preparative HPLC