反应详情

1-(4-amino-2-methyl-3-quinolinyl)-ethanone (2 g) was added all at once as a solid to a stirred suspension of sodium borohydride (1.13 g) in isopropanol (50 ml). The mixture was refluxed for several hours until the reaction was complete based on thin-layer chromatography (silica gel, 10% methanol/dichloromethane). Methanol (10 ml) and water (5 ml) were added and the mixture was allowed to cool slowly to room temperature. Most of the solvent was evaporated under vacuum, and the concentrate partitioned between water and ethyl acetate. The ethyl acetate extract was dried (saturated sodium chloride wash, sodium sulfate) and the ethyl acetate removed under vacuum. The resulting solid was recrystallized from acetonitrile to give 1.5 g of crystals, mp 214°.

1. temperatureThe mixture was refluxed for several hours until the reaction
2. customMost of the solvent was evaporated under vacuum
3. customthe concentrate partitioned between water and ethyl acetate
4. extractionThe ethyl acetate extract
5. customwas dried
6. wash(saturated sodium chloride wash, sodium sulfate)
7. customthe ethyl acetate removed under vacuum
8. customThe resulting solid was recrystallized from acetonitrile