Process for the production of aromatic primary amines
AssigneeMonsanto Company
InventorAbul F. M. Iqbal
Life of this patent
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Abstract
Aromatic primary amines, e.g., aniline, are prepared by reduction of an aromatic nitro compound, e.g., nitrobenzene with carbon monoxide and water in the presence of a basic nitrogen containing compound selected from the group consisting of tertiary amine and amide and a rhodium catalyst selected from the group consisting of rhodium oxide, rhodium hydroxide, rhodium carbonyl compound and rhodium salt which forms a rhodium carbonyl compound under reduction conditions.
Claims12
In a process for the preparation of aromatic primary amine which comprises reducing an aromatic nitro compound with carbon monoxide and water under reaction conditions, the improvement which comprises conducting the reaction in the presence of a basic nitrogen containing compound selected from the group consisting of a tertiary amine and an amide and a rhodium catalyst selected from the group consisting of rhodium oxide, rhodium hydroxide, a rhodium carbonyl compound and a rhodium salt which forms a rhodium carbonyl compound under reduction conditions.
In a process for preparing an aromatic primary amine by catalytic reduction of an aromatic nitro compound having a nitro group available for reduction to an amino group, using a metal carbonyl catalyst of Group VIII metal and carbon monoxide, the improvement which comprises heating said nitro compound in homogeneous liquid phase in the presence of a rhodium carbonyl compound as a catalyst, water as a hydrogen source and a basic tertiary amine or amide as a solvent.
Dependencies are inferred from the claim text.