HYDROGENATION OF HALONITROAROMATIC COMPOUNDS

Disclosed is an improved process for the preparation of haloaromatic amines by the catalytic hydrogenation of halonitroaromatic compounds in the presence of a chromium-containing Raney cobalt catalyst. The catalyst gives good hydrogenation rates while minimizing formation of dehalogenated by-product...

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Bibliographic Details
Main Authors MULLINS, EDWARD, TIPTON, LENTZ, CARL, MICHAEL, GIBSON, CHARLES, LLOYD
Format Patent
LanguageEnglish
Published 10.08.1989
Edition4
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:Disclosed is an improved process for the preparation of haloaromatic amines by the catalytic hydrogenation of halonitroaromatic compounds in the presence of a chromium-containing Raney cobalt catalyst. The catalyst gives good hydrogenation rates while minimizing formation of dehalogenated by-products. Un procédé amélioré permet la préparation d'amines haloaromatiques par l'hydrogénation catalytique de composés halonitroaromatiques, en présence d'un catalyseur de cobalt de Raney contenant du chrome. Le catalyseur procure de bonnes vitesses d'hyrogénation tout en réduisant au minimum la formation de produits secondaires déshalogénés.
Bibliography:Application Number: WO1989US00381