反应详情

At RT, 1.40 g (20.16 mmol, 2.2 eq.) of hydroxylammonium chloride and 2.81 ml (20.16 mmol, 2.2 eq.) of triethylamine were added to a solution of 2.0 g (9.16 mmol) of tert-butyl-(4-cyanophenyl)carbamate in 45 ml of ethanol. The reaction mixture was heated under reflux for 4 h and concentrated under reduced pressure. The residue was stirred with 100 ml of water at RT for 1 h. The reaction mixture was filtered and the filter cake was washed with water. The residue was dissolved in ethyl acetate. The aqueous phase that remained was separated off and the organic phase was dried (sodium sulphate), filtered and concentrated under reduced pressure. The crude product was used for the next step without purification. Yield: 2.10 g (purity 95%, 87% of theory)

1. temperatureThe reaction mixture was heated
2. temperatureunder reflux for 4 h
3. concentrationconcentrated under reduced pressure
4. filtrationThe reaction mixture was filtered
5. washthe filter cake was washed with water
6. dissolutionThe residue was dissolved in ethyl acetate
7. customThe aqueous phase that remained was separated off
8. dry with materialthe organic phase was dried (sodium sulphate)
9. filtrationfiltered
10. concentrationconcentrated under reduced pressure
11. customThe crude product was used for the next step without purification