反应详情

Azetidine (27.0 μL, 0.400 mmol) and cesium carbonate (97%, 202 mg, 0.601 mmol) were added to a solution of 7-methyl-5-[1-methyl-5-(4-methylphenyl)-1H-pyrazol-4-yl]-4-(1H-1,2,4-triazol-1-yl)imidazo[5,1-f][1,2,4]triazine (material from the previous reaction, ≦0.16 mmol) in N,N-dimethylformamide (3.0 mL), and the reaction mixture was stirred for 1 hour at room temperature. The reaction was diluted with ethyl acetate, washed with water, washed with saturated aqueous sodium chloride solution, dried over sodium sulfate, filtered, and concentrated under reduced pressure. Purification using silica gel chromatography (Gradient: 0% to 5% methanol in dichloromethane), followed by azeotroping with heptane, provided the product as a white solid. Yield: 35 mg, 0.097 mmol, 61% over 2 steps. LCMS m/z 360.2 (M+1). 1H NMR (400 MHz, CDCl3) δ 2.20-2.28 (m, 2H), 2.35 (s, 3H), 2.64 (s, 3H), 3.5-3.9 (v br m, 2H), 3.90 (s, 3H), 3.9-4.3 (v br m, 2H), 7.21 (AB quartet, JAB=8.1 Hz, ΔvAB=32.1 Hz, 4H), 7.64 (s, 1H), 7.78 (s, 1H).

1. washwashed with water
2. washwashed with saturated aqueous sodium chloride solution
3. dry with materialdried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customPurification
7. customby azeotroping with heptane