Process for preparing dinitrotoluenes

C - Chemistry – Metallurgy – 07 – C

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260/610.9

C07C 201/08 (2006.01) C07C 205/06 (2006.01)

Patent

CA 2008161

BREVET D'INVENTION PROCEDE DE PREPARATION DE DINITROTOLUENES Société dite RHONE-POULENC CHIMIE INVENTEURS GUBELMANN Michel POPA Jean-Michel TIREL Philippe-Jean QUEMERE Eric DOUSSAIN Claude ABREGE DU CONTENU TECHNIQUE DE L'INVENTION La présente invention concerne un procédé de préparation du dinitrotoluène par réaction du mononitrotoluène et de l'acide nitrique en phase liquide. Le procédé est caractérisé en ce que la réaction est conduite en présence d'un sulfate métallique et le cas échéant en présence d'un diluant choisi parmi les (poly) cycloalcanes perfluorés comportant de 5 à 12 atomes de carbone et le perfluorotoluène.

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