37567-35-4Relevant academic research and scientific papers
4. 4 '- dihydroxy - 3, 3' - diamino benzophenone preparation method
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, (2017/06/15)
The invention discloses a preparation method of 4,4'-dihydroxy-3,3'-diamino diphenyl ketone. The preparation method is characterized in that common organic reagents (chlorobenzene and parachlorobenzoyl chloride) are used as raw materials to prepare the target product through organic reactions in four steps. Particularly, pollution-free 4,4'-dichloro-3,3'-dinitro diphenyl ketone with high industrial application value is adopted to prepare 4,4'-dihydroxy-3,3'-dinitro diphenyl ketone which is a hydrolyzate, and 4,4'-dihydroxy-3,3'- diamino diphenyl ketone is prepared by using pollution-free hydrazine hydrate reducing method which is simple in process.
REACTION OF 1,1,1-TRICHLORO-2,2-BIS(CHLOROPHENYL)ETHANE AND ITS NITRO DERIVATIVES WITH ALKALI-METAL NITRITES
Kazin, V. N.,Sibrikov, S. G.,Kopeikin, V. V.,Mironov, G. S.
, p. 323 - 324 (2007/10/02)
3,3'-Dinitro-4,4'-dihydroxybenzophenone was obtained with a high yield by the reaction of 1,1,1-trichloro-2,2-bis(3-nitro-4-chlorophenyl)ethane with alkali-metal nitrites in aprotic dipolar solvents.The reaction of 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane with potassium nitrite and sodium nitrite under analogous conditions leads to dehydrochlorination of the substrate, while the 1,1,1-trichloro-2,2-bis(3,5-dinitro-4-chlorophenyl)ethane is converted into 1,1-dichloro-2,2-bis(3,5-dinitro-4-hydroxyphenyl)ethylene.
