PREPARATION OF SUBSTITUTED AROMATIC AMINES

摘要

A method for the preparation of aromatic amines such as N-phenyl-p- phenylenediamine wherein an aromatic amine such as aniline is oxidized with oxygen or hydrogen peroxide in the presence of a metal pentacyno ferrated(II ) complex, includes subsequent catalytic reduction of the complex by hydrogenation in the presence of a metal catalyst having at least two Group VIII metals, preferably platinum in combination with ruthenium either togeth er on a single carbon support or each metal separately on carbon supports.