4-Amino-3-chlorobenzonitrile → 3-Chloro-4-nitrobenzonitrile

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

Sodium nitrite (6.78 g in water (40 mL) at 0° C.) was slowly added to a solution of 4-amino-3-chloro-benzonitrile (10.5 g) in water (30 mL) and concentrated hydrochloric acid (30 mL) also at 0° C. After 10 minutes the solution was poured onto a suspension of cuprous oxide (3.48 g) and sodium nitrite (31.69 g) in water (100 mL) at 0° C. The ensuing mixture was stirred at 0° C. for 1 hour then at 23° C. for 1 hour. The resulting mixture was extracted with dichloromethane and the organic layer washed with saturated sodium chloride. The separated organic layer was dried over sodium sulfate and then concentrated to give 3-chloro-4-nitro-benzonitrile (11.31 g).

Herkunft & Nachweise