反应详情

温度

80 °C

Combine (1H-benzimidazol-2-yl)(1-(t-butoxycarbonyl)piperidin-4-yl)amine (2.76 g, 8.72 mmol), and sodium hydride (0.38 g, 9.5 mmol) in dimethylformamide (30 mL). After 30 minutes, add 2-(isopropoxy)ethyl mesylate (0.51 g, 5.5 mmol). Heat to 80° C. After 2.5 hours, cool the reaction mixture to ambient temperature and partition between dichloromethane and a saturated aqueous sodium bicarbonate solution. Separate the layers and extract the organic layer with water and then brine. Dry the organic layer over MgSO4, filter, and evaporate in vacuo to give (1-(2-(isopropoxy)ethyl)-1H-benzimidazol-2-yl)(1-(t-butoxycarbonyl)piperidin-4-yl)amine: Rf=0.73 (silica gel, dichloromethane/methanol/concentrated ammonium hydroxide, 90/10/0.1).

1. waitAfter 2.5 hours
2. temperaturecool the reaction mixture to ambient temperature
3. custompartition between dichloromethane
4. customSeparate the layers
5. extractionextract the organic layer with water
6. dry with materialDry the organic layer over MgSO4
7. filtrationfilter
8. customevaporate in vacuo