METHOD FOR THE NITRATION OF SUBSTITUTED BENZENES IN THE PRESENCE OF PROPIONIC ACID

METHOD FOR THE NITRATION OF SUBSTITUTED BENZENES IN THE PRESENCE OF PROPIONIC ACID

Substituted benzene nitration method involves carrying out nitration in presence of 50-5000 wt.% propionic acid, 1-20 wt.% of a strong mineral acid and 10-100 wt.% of a water bound substance from propionic acid anhydride, acetic anhydride, phosphorous pentoxide or sulfur trioxide in which substitute...

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Bibliographische Detailangaben
Hauptverfasser: KISSENER, WOLFRAM, HOELZER, BETTINA, LANGER, REINHARD, GOTTA, MATTHIAS
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:Substituted benzene nitration method involves carrying out nitration in presence of 50-5000 wt.% propionic acid, 1-20 wt.% of a strong mineral acid and 10-100 wt.% of a water bound substance from propionic acid anhydride, acetic anhydride, phosphorous pentoxide or sulfur trioxide in which substituted benzene is converted to substituted nitrobenzene. Substituted benzene having formula (I) and substituted nitrobenzene having formula (II), are new. R1, R2, R3, R4 : -H, -OR', -NHR'', -alkyl, -cycloalky aryl, -halogen, -trihalogen methyl, -COOR' , -COR' or -CN stand, where R' is -H, -alkyl, -aryl stands, with the same substituents as R1-R4, and R'' is -COR' stand. [Image] [Image].