1-Methylpyrrolidine → 1-(2-fluoro-4-(2-(1-methyl-1H-pyrazol-4-yl)pyridin-4-yloxy)phenyl)-3-(2-oxo-5-(trifluoromethyl)-1,2-dihydropyridin-3-yl)urea

Participants

Reaction Steps

3-Amino-5-(trifluoromethyl)pyridin-2(1H)-one (44 mg, 0.247 mmol), prop-1-en-2-yl 2-fluoro-4-(2-(1-methyl-1H-pyrazol-4-yl)pyridin-4-yloxy)phenylcarbamate from Example 21 (85 mg, 0.231 mmol) and N-methylpyrrolidine (7.5 mg, 0.088 mmol) were combined in 1,4-dioxane (0.8 mL). The resultant mixture was heated to 80° C. After 13 h, the mixture was cooled to RT and diluted with ethyl acetate (3 mL). The resultant precipitate was collected by filtration, washed with ethyl acetate and dried in vacuo to provide 1-(2-fluoro-4-(2-(1-methyl-1H-pyrazol-4-yl)pyridin-4-yloxy)phenyl)-3-(2-oxo-5-(trifluoromethyl)-1,2-dihydropyridin-3-yl)urea as an off-white solid (65 mg, 58% yield). 1H NMR (400 MHz, DMSO-d6): δ 12.47 (s, 1 H), 9.56 (s, 1 H), 9.35 (s, 1 H), 8.36 (d, J=5.3 Hz, 1 H), 8.25 (br s, 2 H), 8.17 (t, J=9.4 Hz, 1 H), 7.96 (s, 1 H), 7.59 (s, 1 H), 7.25-7.22 (m, 2 H), 7.00 (d, J=8.5 Hz, 1 H), 6.68 (m, 1 H), 3.84 (s 3 H); MS (ESI) m/z: 489.1 (M+H+).

Provenance & Evidence