Pyridine → N-(6-(3-(Isoquinoline-5-sulfonamido)phenyl)imidazo[1,2-b]pyridazin-2-yl)acetamide

Participants

Reaction Conditions

Reaction Steps

To a 10-mL, round-bottomed flask was added N-(6-(3-aminophenyl)imidazo[1,2-b]pyridazin-2-yl)acetamide (Example 5) (0.032 g, 0.12 mmol), DMF (2.0 mL), pyridine (0.015 mL, 0.180 mmol), and isoquinoline-5-sulfonyl chloride hydrochloride (0.0395 g, 0.150 mmol, Toronto Research Chemicals, Ottawa, Ontario). The mixture was stirred at 25° C. for 5 h then concentrated under reduced pressure. The residue was purified by preparative HPLC (Phenomenex Synergi 4μ MAX-RP 150×21.2 mm, 2 to 100% CH3CN/H2O, 0.1% TFA, over 15 min) (Phenomenex, Torrance, Calif.) to afford the title compound as a light-yellow solid. MS (ESI positive ion) m/z: 459 (M+1). 1H NMR (400 MHz, DMSO-d6): δ ppm 11.03 (s, 1H), 10.91 (s, 1H), 9.50 (s, 1H), 8.75 (d, J=6.5 Hz, 1H), 8.58 (d, J=6.0 Hz, 1H), 8.53 (d, J=7.0 Hz, 1H), 8.45 (d, J=8.0 Hz, 1H), 8.25 (s, 1H), 8.02 (d, J=9.5 Hz, 1H), 7.84 (t, J=7.8 Hz, 1H), 7.71 (s, 1H), 7.62 (d, J=7.5 Hz, 1H), 7.56 (d, J=9.5 Hz, 1H), 7.34 (t, J=7.8 Hz, 1H), 7.16 (d, J=8.0 Hz, 1H), 2.11 (s, 3H).

Provenance & Evidence