Process for the preparation of para-amino- diphenylamine

Details Process for the preparation of para-amino- diphenylamine Process for the preparation of para-amino- diphenylamine

C - Chemistry, Metallurgy

07

C

260/597.9

C07C 87/58 (1980.01)

Patent

CA 1127666

GW 31822 Process for the Preparation of Para-Amino Diphenylamine Abstract of the Disclosure An improved process for the preparation of para-amino diphenylamine in which para-nitroso-diphenylhydroxylamine is catalytically hydrogenated in the presence of an organic solvent and one or more metal components selected from the group consist- ing of rutheniurll, rhodium, palladium, osmium, iridium, and platinum, and their sulfidic compounds, at temperatures from 20 to 200°C, is disclosed. The improvement comprises utilizing as the organic solvent one or more members of the group consistiny of aniline and aniline derivatives containing ring-alkyl groups, N-alkyl groups, or a combination thereof, wherein the ring-alkyl groups contain a total of 1 to 6 carbon atoms and the N-alkyl groups contain from 1 to 6 carbon atoms.

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