METHOD OF CO-PRODUCTION OF 3,3'-DINITRO-4,4'-BIS(N,N-DIMETHYLAMINO)BENZOPHENONE AND 3,3'-DINITRO-4-HYDROXY-4'-(N, N-DIMETHYLAMINO)BENZOPHENONE

摘要

FIELD: chemistry.SUBSTANCE: invention relates to an improved method of co-production of 3,3'-dinitro-4,4'-bis(N,N-dimethylamino)benzophenone and 3,3'-dinitro-4-hydroxy-4'-(N,N-dimethylamino)benzophenone. The method includes processing 3,3'-dinitro-4,4'-dichlorobenzophenone in N,N-dimethylformamide or N,N-dimethylacetamide with hydroxides of alkali metals in the form of 20-50% water solution at a temperature of 30-60°C and a molar ratio 3,3'-dinitro-4,4'-dichlorobenzophenone:NaOH (KOH):DMFA (DMAA)= 1:4÷10:20÷30.EFFECT: method makes it possible to obtain each of the said compounds with the high output and high degree of purity.1 tbl, 8 ex