发明授权
- 专利标题: Preparation of substituted aromatic amines
- 专利标题(中): 取代芳族胺的制备
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申请号: US09334252申请日: 1999-06-16
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公开(公告)号: US06229035B1公开(公告)日: 2001-05-08
- 发明人: Edward L. Wheeler , Mark W. Simon
- 申请人: Edward L. Wheeler , Mark W. Simon
- 主分类号: C07F1502
- IPC分类号: C07F1502
摘要:
A method for producing aromatic amines such as N-phenyl-p-phenylenediamine is disclosed wherein an amine substituted aromatic such as aniline is oxidized with oxygen or hydrogen peroxide in the presence of a preferred alkali metal pentacyano ferrate(II) complex made using water soluble ferrous salts with a non-oxidizing anion, preferably, ferrous sulfate, and 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.
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