反应详情

A mixture of 5,8-dibromo-[1,2,4]triazolo[1,5-a]pyrazine (123 mg, 443 μmol), 4-(4-morpholino)aniline (118 mg. 0.664 mmol) and N-ethyldiisopropylamine (116 mL, 0.664 mmol) is heated at reflux in 2-propanol (3 mL) for 4.5 hours. The reaction mixture is evaporated to dryness and the residue partitioned between dichloromethane and citric acid (10%). The organic phase is washed once with water and brine, dried over MgSO4, filtered and evaporated to furnish the title compound (156 mg, 94%) as a yellow solid. 1H-NMR (400 MHz, d6-DMSO) δ (ppm) 3.11 (m, 4H), 3.78 (m, 4H), 6.97 (d, 2H), 7.82 (d, 2H), 7.87 (s, 1H), 8.71 (s, 1H), 9.93 (br s, 1H). LCMS, Rt 3.32 min (96.8%) m/z (APCI) 375 (M+H)+.

1. temperatureis heated
2. customThe reaction mixture is evaporated to dryness
3. customthe residue partitioned between dichloromethane and citric acid (10%)
4. washThe organic phase is washed once with water and brine
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. customevaporated