反应详情

To a solution the product of Step 2 (1.01 g, 1.964 mmol) in methanol (9.8 mL), 4M HCl in Dioxane (1.97 mL, 7.86 mmol) was added. The mixture was stirred at room temperature for 15 minutes. The mixture was diluted with ethyl acetate, washed with saturated NaHCO3, followed by brine, dried (Na2SO4), filtered and concentrated. The residue was purified by column chromatography on silica (40-100% ethyl acetate in hexanes) to afford N-{3-[2-(3-aminooxetan-3-yl)-1,3-thiazol-5-yl]-5-methylphenyl}-4-(trifluoromethyl)pyrimidin-2-amine (386.6 mg, 0.954 mmol, 53.5% yield) as a pale yellow solid. MS ESI: [M+H]+ m/z 408.0. 1H NMR (500 MHz, DMSO-d6) δ 10.26 (s, 1H), 8.83 (d, J=4.8, 1H), 8.07 (s, 1H), 7.97 (s, 1H), 7.47 (s, 1H), 7.28 (d, J=4.9, 1H), 7.17 (s, 1H), 4.87 (d, J=5.6, 2H), 4.58 (d, J=5.7, 2H), 2.32 (s, 3H).

1. washwashed with saturated NaHCO3
2. dry with materialdried (Na2SO4)
3. filtrationfiltered
4. concentrationconcentrated
5. customThe residue was purified by column chromatography on silica (40-100% ethyl acetate in hexanes)