反应详情

To a solution of 3-(4,6-difluoro-1-methyl-1H-indazol-5-ylmethyl)-6-{1-[2-(tetrahydro-pyran-2-yloxy)-ethyl]-1H-pyrazol-4-yl}-imidazo[1,2-b]pyridazine (Stage 285.1, 30 mg, 0.061 mmol) in dioxane (2 mL) stirred at 0° C. was added a solution of HCl in dioxane (4 M, 0.152 mL). The RM was stirred 1 h at rt, poured in a solution 10% NaHCO3, and the aqueous phase was extracted with DCM. The combined organic phases were dried over MgSO4 and concentrated under reduced pressure. The residue was purified by flash chromatography (CombiFlash® Companion System®, with RediSep® silica gel column, hexane/EtOAc=100:0->80:20) to afford the title compound as a white powder (tR 3.68 min (conditions 3), MH+=410.2, 1H-NMR in DMSO-d6: 8.38 (s, 1H); 8.19 (s, 1H); 8.06 (s, 1H); 8.04 (d, 1H); 7.53-7.46 (m, 3H); 4.97 (t, 1H); 4.40 (s, 2H); 4.18 (t, 2H); 3.97 (s, 3H); 3.76 (q, 2H)).

1. extractionthe aqueous phase was extracted with DCM
2. dry with materialThe combined organic phases were dried over MgSO4
3. concentrationconcentrated under reduced pressure
4. customThe residue was purified by flash chromatography (CombiFlash® Companion System®, with RediSep® silica gel column, hexane/EtOAc=100:0->80:20)