Pyridine → HCID 67252911, compound

Participants

Reaction Steps

1-(5-(6-aminopyridin-3-yloxy)-2-fluorophenyl)-3-(3-isopropyl-1-(quinolin-6-yl)-1H-pyrazol-5-yl)urea (0.0495 g, 0.099 mmol) was dissolved in DCM (1.0 mL), to which pyridine (0.49 mL, 6.0 mmol) and acetic anhydride (0.066 mL, 0.65 mmol) were added. The reaction mixture was stirred at RT for 12 h. The completed reaction was quenched with 2M NaHCO3 (12 mL) and extracted with EtOAc (25 mL). The organic layer was washed with H2O (15 mL) and brine (10 mL), dried (MgSO4), concentrated in vacuo and purified by chromatography to afford 1-(5-(6-acetamidopyridin-3-yloxy)-2-fluorophenyl)-3-(3-isopropyl-1-(quinolin-6-yl)-1H-pyrazol-5-yl)urea (0.0234 g, 44% yield) as a yellow foam. It was converted to corresponding mesylate salt by reacting with MsOH (1.0 eq.). 1H NMR (400 MHz, DMSO-d6) δ 10.54 (s, 1H), 9.09 (s, 1H), 9.07-9.04 (m, 2H), 8.65 (d, J=8.0 Hz, 1H), 8.25 (d, J=2.0 Hz, 1H), 8.21 (d, J=8.8 Hz, 1H), 8.11-8.07 (m, 2H), 8.02 (dd, J=8.8, 2.4 Hz, 1H), 7.85 (m, 1H), 7.75 (m, 1H), 4.48 (dd, J=8.8, 3.2 Hz, 1H), 7.24 (m, 1H), 6.67 (m, 1H), 6.40 (s, 1H), 2.92 (m, 1H), 2.31 (s, 3H), 2.08 (s, 3H), 1.24 (d, J=7.2 Hz, 6H); MS (ESI) m/z: 540.0 (M+H+).

Provenance & Evidence