反应详情

2-Chloro-4-(2-chloro-4-difluoromethoxy-phenyl)-3-nitro-2,3-dihydro-pyridine (0.176 g, 0.53 mmol) was dissolved in acetonitrile (20 mL), followed by the addition of sec butylamine (106 μL, 1.06 mmol) and Hunig's base (184 μL, 1.06 mmol). The reaction was stirred at reflux for 64 h. The solution was cooled to room temperature, extracted with EtOAc/H2O, organic layer was then washed with 1N HCl and made basic with 1N NaOH. The organic layer was washed with brine, dried Na2SO4, filtered and concentrated to yield 0.163 g (83%) of sec-butyl-[4-(chloro-4-difluoromethoxy-phenyl)-3-nitro-2,3-dihydro-pyridin-2-yl]-amine as a yellow oil; MS (AP) 413.0 [(M+H+CH3CN)+, 50].

1. temperatureat reflux for 64 h
2. extractionextracted with EtOAc/H2O, organic layer
3. washwas then washed with 1N HCl
4. washThe organic layer was washed with brine, dried Na2SO4
5. filtrationfiltered
6. concentrationconcentrated