Method for the preparation of a halogenated aromatic amine

Details Method for the preparation of a halogenated aromatic amine Method for the preparation of a halogenated aromatic amine

1973-02-12

1978-01-24

Brust, Joseph Paul

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260518A, 260575, C07C 8511

Patent

active

040704017

ABSTRACT:
A method for the preparation of a halogenated aromatic amine, wherein a halogenated aromatic nitro compound is hydrogenated in liquid phase in the presence of a platinum-base catalyst to obtain a corresponding halogenated aromatic amine, the hydrogenation being carried out in the presence of an alkylmonoamine, an alicyclic amine or a polyalkylenepolyamine. The presence of the amine well suppresses a dehalogenation reaction which would otherwise be involved, so that not only a high purity halogenated aromatic amine is obtained, but also corrosion of a reactor is prevented.

REFERENCES:
patent: 3361819 (1968-01-01), Kosak et al.
patent: 3499034 (1970-03-01), Gonzalez
patent: 3546297 (1970-12-01), Kosak

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