Process for the preparation of 4-aminodiphenylamine

Details Process for the preparation of 4-aminodiphenylamine Process for the preparation of 4-aminodiphenylamine

C - Chemistry, Metallurgy

07

C

C07C 211/55 (2006.01) C07C 209/36 (2006.01) C07C 209/38 (2006.01)

Patent

CA 2244391

4-aminodiphenylamines are prepared by hydrogenating nitrosobenzene or mixtures of nitrosobenzene and nitrobenzene with hydrogen in the presence of bases containing hydroxide, oxide and/or alkoxide groups and heterogeneous catalysts in inert aprotic solvents at temperatures of from 0 to 200°C and at pressures of from 0.1 to 150 bar.

On prépare des 4-aminodiphénylamines en hydrogénant un nitrosobenzène, ou des mélanges de nitrosobenzène et de nitrobenzène, avec de l'hydrogène, en présence de bases contenant des groupements hydroxyles, oxydes et/ou alcoxy, et en présence de catalyseurs hétérogènes dans des solvants aprotiques inertes, à une température allant de 0 à 200 .degré.C et à une pression allant de 0,1 à 150 bars.

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