反应详情

A mixture of 5,7-dibromo-6-(2,4,6-trifluorophenyl)[1,2,4]triazolo[1,5-a]pyrimidine (320 mg, 0.78 mmol), (1S)-2,2,2-trifluoro-1-methylethylamine hydrogen chloride (235 mg, 1.57 mmol), and diisopropylethylamine (260 mg, 2.0 mmol) in 5 mL of N,N-dimethylformamide is stirred at room temperature for 18 h. Water is added to quench the reaction, and the product is extracted with ethyl acetate. The combined organic extracts are washed with saturated sodium chloride (x3), dried over magnesium sulfate, and concentrated to a residue. The residue is chromatographed over silica gel, eluting with a gradient of 9:1 hexanes/ethyl acetate to 2:1 hexanes/ethyl acetate. Concentration provides 5-bromo-6-(2,4,6-trifluorophenyl)-N-[(1S)-2,2,2-trifluoro-1-methylethyl][1,2,4]triazolo[1,5-a]pyrimidin-7-amine as a light tan solid (60 mg, mp 95-97° C.). MS: m/z 440.0, 442.0 (M+H).

1. customto quench
2. customthe reaction
3. extractionthe product is extracted with ethyl acetate
4. washThe combined organic extracts are washed with saturated sodium chloride (x3)
5. dry with materialdried over magnesium sulfate
6. concentrationconcentrated to a residue
7. customThe residue is chromatographed over silica gel
8. washeluting with a gradient of 9:1 hexanes/ethyl acetate to 2:1 hexanes/ethyl acetate
9. concentrationConcentration