Formamide → Acetamide, N-(2-(2-(2-cyano-4,6-dinitrophenyl)diazenyl)-5-(diethylamino)phenyl)-

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

2-Bromo-4,6-dinitro-2'-acetylamino-4'-(N,N-diethylamino)azobenzene (2.4 parts), copper (II) chloride (0.67 parts), anhydrous sodium acetate (1.2 parts), formamide (1.8 parts), acetic anhydride (2.0 parts) and n-butyl acetate (44 parts) are mixed together and heated, with stirring, to 110° C. during 15 minutes. The temperature is maintained for 5 hours after which time the reaction is complete. The mixture is cooled to room temperature and poured into petroleum-ether (boiling range 60-80°) (400 parts). The precipitate is collected, washed with petroleum-ether (100 parts) and dried. 2-Cyano-4,6-dinitro-2'-acetylamino-4'-(N,N-diethylamino)azobenzene is obtained in 96% yield.

Herkunft & Nachweise