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METHOD FOR PREPARATION OF 4,4'-DINITRODIPHENYLAMINE AND 4,4'-BIS(ALKYLAMINO)DIPHENYLAMINE BY USING 4-NITROANILINE
METHOD FOR PREPARATION OF 4,4'-DINITRODIPHENYLAMINE AND 4,4'-BIS(ALKYLAMINO)DIPHENYLAMINE BY USING 4-NITROANILINE
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机译:4-硝基苯胺制备4,4'-二硝基二苯胺和4,4'-BIS(烷基酰胺基)二苯胺的方法
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摘要
Provided is a method of preparing 4,4′-dinitrodiphenylamine (4,4′-DNDPA) in high yield by reacting 4-nitroaniline with excess nitrobenzene via the NASH reaction, and a method of preparing 4,4′-bis(alkylamino)diphenylamine (4,4′BAADA) in high yield and purity by hydrogenating the resulting 4,4′-DNDPA with a ketone compound in the presence of hydrogen and hydrogenation catalyst. The disclosed process is simple, allows selective preparation of 4,4′-DNDPA without byproducts, and thus allows preparation of 4,4′-BAADA in high yield without a complicated purification procedure.
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