Hydrochloric Acid → HCID 67981486, compound

Participants

Reaction Steps

DIAD (0.30 mL; 1.54 mmol; 2.3 eq.) was added dropwise over 1 min to a solution of tert-butyl 5-(hydroxymethyl)-3-{1-[4-(morpholin-4-ylcarbonyl)phenyl]-1H-1,2,3-triazol-4-yl}-1H-indazole-1-carboxylate (340 mg; 0.67 mmol; 1.0 eq.), 3(2H)-pyridazinone (100 mg; 1.04 mmol; 1.5 eq.) and triphenylphosphine (354 mg; 1.35 mmol; 2.0 eq.) in DCM (15 mL). The reaction mixture was stirred for 4 h at RT then poured into HCl (0.1N solution) and extracted with DCM. Combine organic phases were washed with brine, dried over magnesium sulfate, filtered and concentrated. The crude was purified by flash chromatography on silica (gradient 20:80 to 90:10, MeOH pure) to give the title compound as a yellow solid. 1H NMR (300 MHz, DMSO-d6) δ 9.61 (s, 1H), 8.52 (s, 1H), 8.19 (d, J=8.6 Hz, 2H), 8.13 (d, J=8.7 Hz, 1H), 7.98 (dd, J=1.6, 3.9 Hz, 1H), 7.77-7.61 (m, 3H), 7.45 (dd, J=3.9 Hz, 1H), 7.01 (dd, J=9.5 Hz, 1.6, 1H), 5.46 (s, 2H), 3.76-3.35 (m, 8H), 1.69 (s, 9H). HPLC (Condition A): Rt 3.74 min (purity 91.1%). MS (ESI−): 483.4.

Provenance & Evidence