Process for preparing aminobenzoic acids from the...

C - Chemistry – Metallurgy – 25 – B

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C25B 3/04 (2006.01)

Patent

CA 1191811

BREVET D'INVENTION PROCEDE DE PREPARATION D'ACIDES AMINOBENZOIQUES A PARTIR DES NITROTOLUENES CORRESPONDANTS ELECTRICITE DE FRANCE (Service National) Invention de : CHAUSSARD Jacques LAHITTE Claude ABREGE DESCRIPTIF La présente invention concerne un procédé de préparation d'acides aminobenzoïques à partir des nitrotoluènes correspondants. Le procédé selon la présente invention est caractérisé en ce que l'agent oxydant utilisé pour la mise en oeuvre de la première étape, oxydation du nitrotoluène en acide nitrobenzoïque, est régénéré à l'anode d'un électrolyseur assurant simultanément la réduction électrochimique de la seconde étape, réduction de l'acide nitrobenzoïque en acide amino- benzoïque . . FIGURE UNIQUE

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