Trifluoroacetic acid → HCID 178511615, compound

Participants

Reaction Conditions

Reaction Steps

To 23C (0.464 mmol, 260 mg) in NMP (2 mL) was added TFA (0.2 mL). The resulting reaction mixture was heated at 100° C. for 24 hrs. The reaction mixture was diluted with MeOH and purified by HPLC Phenomenex Axia Luna 5 micron 30×100 mm) with 20% to 100% MeOH (0.1% TFA) in water (0.1% TFA) to isolate 6-((trans)-4-aminocyclohexylamino)-N-(2-chloropyridin-4-yl)-8-(cyclopropylamino)imidazo[1,2-b]pyridazine-3-carboxamide (107 mg, 0.243 mmol, 52.3% yield) as white solid. LC/MS (Phenomenex Luna 5 micron C18 4.6×30 mm, 0 to 100 B in 2 min with 1 min hold time, Flow rate=5 mL/min, detection at 254 nm, Solvent A: 10% methanol/90% water/0.1% TFA; Solvent B: 10% water/90% methanol/0.1% TFA). Rt=1.500 minutes. [M+H]=441.12. 1H NMR (400 MHz, MeOD) δ ppm 8.21-8.35 (1H, m), 8.01 (1H, s), 7.96 (1H, d, J=1.76 Hz), 7.33-7.51 (1H, m), 6.07 (1H, s), 3.60-3.85 (1H, m), 3.08-3.27 (1H, m), 2.49-2.66 (1H, m), 2.25-2.45 (2H, m), 2.06-2.28 (2H, m), 1.35-1.69 (4H, m), 0.77-0.97 (2H, m), 0.50-0.73 (2H, m).

Provenance & Evidence