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
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF OBTAINING 3,3'-DINITRO-4,4'-BIS(N,N-DIMETHYLAMINO)BENZOPHENONE | 2012 |
|
RU2522551C1 |
| METHOD OF OBTAINING 1,1-DICHLORO-2,2-BIS(3-NITRO-4-N, N-DIMETHYLAMINOPHENYL)ETHYLENE | 2012 |
|
RU2522553C1 |
| METHOD FOR PREPARING 3,4'-DIAMINO-4-R-BENZOPHENONES | 2006 |
|
RU2318799C1 |
| METHOD OF SYNTHESIS OF 1-(PARA-R-PHENYLAZO)-3-NITRONAPHTHALENES | 1998 |
|
RU2163611C2 |
| SUBSTITUTED [(3,4-DINITRO-1H-PYRAZOLE-1-YL)-NNO-AZOXY]FURAZANS AND METHOD FOR SYNTHESIS THEREOF | 2020 |
|
RU2756321C1 |
| METHOD OF PRODUCING 3,3Ъ-DINITRO-4Ъ4Ъ-DIHYDROXYBENZPHENONE | 0 |
|
SU1606507A1 |
| BIS(2-PHENYLPYRIDINATO-N,C){2-[2'-(4-ALKYLBENZOLE SULPHONAMIDO)PHENYL]BENZOXAZOLATO-N,N'}IRIDIUM(III) AND ELECTROLUMINESCENT DEVICE BASED THEREON | 2015 |
|
RU2602236C1 |
| METHOD OF OBTAINING SIMPLE POLYFLUOROALKYL ETHERS | 2007 |
|
RU2346926C1 |
| METHOD OF PREPARING FLUORINE-CONTAINING 3-AZABICYCLO [3 | 1999 |
|
RU2174118C2 |
| METHOD OF OBTAINING BIS(4-NITROPHENYLYTHIO) ARYLENES | 0 |
|
SU1139726A1 |
