Dimethylformamide → 4-Dimethylamino-2-nitrobenzaldehyde

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

720 parts of phosphorus oxychloride is added at 25°C to a solution of 498 parts of m-nitrodimethylaniline in 1800 parts by volume of dimethylformamide. The mixture is then heated within 1 hour to 75° to 80°C and stirred at this temperature for six hours. After the solution has cooled it is poured into 6000 parts of ice-water. The precipitate is suction filtered, washed and recrystallized from acetone. 385 parts (66% of theory) of 2-nitro-4-dimethylaminobenzaldehyde having a melting point of 115° to 116°C is obtained. ##SPC14##

Herkunft & Nachweise