Potassium Carbonate → N-(4-((2-acetamidopyridin-4-yl)oxy)-2,5-difluorophenyl)-1-(4-fluorophenyl)-4-isopropoxy-2-oxo-1,2-dihydropyridine-3-carboxamide

Participants

Reaction Steps

A mixture of Example 1 (0.400 g, 0.743 mmol) and K2CO3 (0.400 g, 2.89 mmol) in isopropanol (10 mL) was heated at 120° C. for 1 h with microwave irradiation. The solids were removed by filtration and washed with THF. The filtrate was concentrated to dryness. The residue was stirred in water (15 mL) and the remaining solids were collected and crystallized from MeCN to provide N-(4-((2-acetamidopyridin-4-yl)oxy)-2,5-difluorophenyl)-1-(4-fluorophenyl)-4-isopropoxy-2-oxo-1,2-dihydropyridine-3-carboxamide, (0.295 g, 71.9% yield) as white solid. 1H NMR (400 MHz, DMSO-d6): δ 11.03 (s, 1H), 10.58 (s, 1H), 8.29 (dd, J=12.6, 7.2 Hz, 1H), 8.18 (d, J=5.7 Hz, 1H), 7.87 (d, J=7.8 Hz, 1H), 7.67 (s, 1H), 7.50-7.49 (m, 3H), 7.35 (t, J=8.7 Hz, 2H), 6.71 (dd, J=5.7, 2.4 Hz, 1H), 6.55 (d, J=7.9 Hz, 1H), 4.85 (m, 1H), 2.03 (s, 3H), 1.31 (d, J=6.0 Hz, 6H); MS (ESI) m/z: 553.1 (M+H+).

Provenance & Evidence