Sodium Carbonate → 5-(11-fluoro-5,6-dihydroindolo[1,2-h][1,7]naphthyridin-2-yl)-N-methyl-6-(N-methylmethylsulfonamido)-2-(2-methylthiazol-5-yl)benzofuran-3-carboxamide

Participants

Reaction Conditions

Reaction Steps

To a degassed solution of N-methyl-6-(N-methylmethylsulfonamido)-2-(2-methylthiazol-5-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzofuran-3-carboxamide (200 mg, 0.40 mmol), 2-chloro-11-fluoro-5,6-dihydroindolo[1,2-h][1,7]naphthyridine (113 mg, 0.41 mmol), Na2CO3 (84 mg, 0.79 mmol), K2CO3 (109 mg, 0.79 mmol) in 1,4-dioxane (5 mL) and H2O (0.1 mL) were added Pd2(dba)3 (10 mg) and X-Phos (10 mg) under N2. Then the mixture was stirred at 100° C. for 2 hours. The reaction mixture was cooled to RT and filtered. The filtrate was washed with H2O and dried over Na2SO4. After concentrated, the residue was purified by prep-HPLC to give the product (30 mg, yield: 12%). 1H-NMR (CDCl3, 400 MHz) δ 8.41 (s, 1H), 7.89 (s, 1H), 7.62˜7.68 (m, 2H), 7.45 (d, J=7.6 Hz, 1H), 7.24 (s, 1H), 7.12˜7.20 (m, 2H), 6.74˜6.81 (m, 1H), 6.22 (d, J=4.0 Hz, 1H), 4.32 (t, J=6.4 Hz, 2H), 3.32 (s, 3H), 3.27˜3.31 (m, 2H), 3.02 (d, J=4.8 Hz, 3H), 2.75 (s, 3H), 2.74 (s, 3H). MS (M+H)+: 616.

Provenance & Evidence