反应详情

In a 20 mL flask, 2-(5-(1H-pyrazol-4-yl)imidazo[1,2-c]pyrimidin-7-yl)-5-methyl-1,3,4-thiadiazole (17.4 mg, 0.0614 mmol) and 3-cyclopropylacrylonitrile (Preparation B; 17.2 mg, 0.184 mmol) were dissolved in DMF (614 μL, 0.0614 mmol). To this was added DBU (23.0 μA, 0.154 mmol) and stirred at ambient temperature for 40 h. The reaction was incomplete, so another portion of DBU (23.0 μA, 0.154 mmol) and 3-cyclopropylacrylonitrile (17.2 mg, 0.184 mmol) were added. After 4 hours, the reaction mixture was diluted in EtOAc, and washed with water and brine. The organic layer was dried with MgSO4, filtered and concentrated down to a yellow oil. The crude material was purified by silica chromatography using a 0-10% MeOH/EtOAc gradient to afford 3-cyclopropyl-3-(4-(7-(5-methyl-1,3,4-thiadiazol-2-yl)imidazo[1,2-c]pyrimidin-5-yl)-1H-pyrazol-1-yl)propanenitrile (7.2 mg, 31% yield). MS (apci) m/z=377.2 (M+H).

1. waitAfter 4 hours
2. washwashed with water and brine
3. dry with materialThe organic layer was dried with MgSO4
4. filtrationfiltered
5. concentrationconcentrated down to a yellow oil
6. customThe crude material was purified by silica chromatography