Title: Preparation of substd. aromatic amine
Application Number: 00137430 Application Date: 1997.03.13
Publication Number: 1309084 Publication Date: 2001.08.22
Approval Pub. Date: 2004.07.21 Granted Pub. Date: 2004.07.21
International Classifi-cation: C01C3/12
Applicant(s) Name: Uniroyal Chemical Co., Ltd. Address:
Inventor(s) Name: E.L. Weller;R.E. Malse;Jr;M.W. Simon
Attorney & Agent: chen jizhuang
Abstract:
    The present invention discloses a method for producing aromatic amines such as N-phenyl-p-phenylenediamine, wherein an amine substituted aromatic such as aniline is oxidized with oxygen or hydrogen peroxide in the presence of a preferred trisodium pentacyano ferrate(II) complex containing various water soluble ligands, such as ammonia, mono alkyl amine, dialkyl amines, and trialkyl amines. The complex is subsequently catalytically reduced by hydrogenation using certain heterogeneous metal catalysts to yield the desired aromatic amine.
Time: 4