反应详情

To a 20 mL scintillation vial which contained tert-butyl 5-(3-(4-amino-6-methyl-1,3,5-triazin-2-yl)-5-methoxypyridin-2-ylamino)-2-chloropyridin-3-ylcarbamate (0.210 g, 0.458 mmol) in DCM (5 mL) was added trifluoroacetic acid (Aldrich) (0.170 mL, 2.288 mmol). The resulting mixture was capped and stirred at rt in closed system for 1 h. The reaction mixture was first neutralized with sat. NaHCO3 then extracted with CHCl3 (3×10 mL). The combined organic layers were dried over MgSO4 and concentrated. The crude product was purified using the column chromatography (40 g, 3% to 5% MeOH in DCM) to afford the desired product as a yellow solid (135 mg). MS (ESI pos. ion) m/z: 359.0. Calc'd exact mass for C15H15Cl N8O: 358.1. 1H NMR (400 MHz, DMSO-d6) δ ppm 2.45 (s, 3H) 3.84 (s, 3H) 5.43 (s, 2H) 7.78 (br. s., 1H) 7.86 (br. s., 1H) 7.89 (d, J=2.35 Hz, 1H) 7.94 (d, J=2.15Hz, 1H) 8.16 (d, J=3.13 Hz, 1H) 8.40 (d, J=3.13 Hz, 1H) 11.75 (s, 1H).

1. customThe resulting mixture was capped
2. extractionthen extracted with CHCl3 (3×10 mL)
3. dry with materialThe combined organic layers were dried over MgSO4
4. concentrationconcentrated
5. customThe crude product was purified