Method for preparation of 4,4′-dinitrodiphenylamine and 4,4′-bis(alkylamino)diphenylamine by using 4-nitroaniline
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...
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| creator | PARK SANG HEE KIM SEOUNG-IL KWAG HAN JIN KIM JIN-EOK |
| description | 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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| title | Method for preparation of 4,4′-dinitrodiphenylamine and 4,4′-bis(alkylamino)diphenylamine by using 4-nitroaniline |
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