Reaktion #220924

Reaktionsgleichung

3-Methyl-4-nitrobenzonitrile

acetic acid

→

4-Amino-2-methylbenzonitrile

Lösungsmittel

Water

water

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturthe resulting mixture was heated for 1 hour
2. 2
   Temperaturto cool to room temperature
3. 3
   Extraktionextracted with ethyl acetate (4×40 ml)
4. 4
   WaschenThe organic phase was washed with 5% NaHCO3 (1×50 ml) and water (1×50 ml)
5. 5
   Trocknendried over Na2SO4
6. 6
   Sonstigeevaporated

Vorschrift

3-Methyl-4-nitrobenzonitrile (1.0 g, 6 mmol) was dissolved in acetic acid (15 ml). Water (3.75 ml) was added and the mixture was heated between 90-95° C. Iron powder (2.5 g) was added during 1.5 hours and the resulting mixture was heated for 1 hour. Other portion of water (3.75 ml) was added and the heating was continued for additional 2 hours. The solution was allowed to cool to room temperature and the mixture was diluted with water (100 ml) and extracted with ethyl acetate (4×40 ml). The organic phase was washed with 5% NaHCO3 (1×50 ml) and water (1×50 ml), dried over Na2SO4 and evaporated. The crude product was used without further purifications. 1H NMR (DMSO-d6): 2.28 (3H, s), 6.04 (2H, bs), 6.44 (1H, m), 6.48 (1H, m), 7.31 (1H, m).

Quelle