反应详情

温度

70 °C

A solution of 1-butyl-4-piperidone (6.2 g, 40 mmole) and 1-aminopyrrole (3.3 g, 40 mmole) in 100 ml of toluene was stirred at reflux overnight (about 16 hours). The mixture was cooled and then evaporated to an oil, which in turn was dissolved in 75 ml of isopropanol, and 22 ml of ethanol. To the solution was added NaBH4 (3.8 g, 100 mole). The mixture was stirred at 70° C. for 2 hours and then evaporated, stirred with water and extracted with ethyl acetate-ether. The organic extract was washed with water and saturated NaCl solution, dried (anhydrous MgSO4), filtered and evaporated to 13 g of an oil. This oil was purified by high pressure liquid chromatography (silica, 1% diethylamine/ethyl acetate) to give 8.2 g of an oil of 1-(n-butyl)-4-(1H-pyrrol-1-yl)aminopiperidine.

1. temperatureat reflux overnight (about 16 hours)
2. temperatureThe mixture was cooled
3. customevaporated to an oil, which in turn
4. dissolutionwas dissolved in 75 ml of isopropanol
5. customevaporated
6. stirringstirred with water
7. extractionextracted with ethyl acetate-ether
8. extractionThe organic extract
9. washwas washed with water and saturated NaCl solution
10. dry with materialdried (anhydrous MgSO4)
11. filtrationfiltered
12. customevaporated to 13 g of an oil
13. customThis oil was purified by high pressure liquid chromatography (silica, 1% diethylamine/ethyl acetate)