Process for the production of halogenated aromatic primary amine

Details Process for the production of halogenated aromatic primary amine Process for the production of halogenated aromatic primary amine

1974-09-06

1976-11-02

Curtis, Allen B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260689, C07C 8511

Patent

active

039897567

ABSTRACT:
Process for producing halogenated aromatic primary amines that may contain substituents such as methyl, ethyl, methoxy, and so on, by catalytic hydrogenation of halogenated aromatic nitro compounds in the presence both of a Raney nickel catalyst and of a dehalogenation inhibitor selected from the group consisting of dicyandiamide, cyanamide and calcium cyanamide, in an inert solvent at a temperature in the range from 40.degree. to 150.degree. C under an elevated hydrogen pressure, whereby any dehalogenated aromatic primary amine impurity in the halogenated aromatic primary amine product is held to an acceptable minimum so that the halogenated aromatic amines may be produced in a high state of purity.

REFERENCES:
patent: 2214067 (1940-09-01), Petersen
patent: 3145231 (1964-08-01), Kosak

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