Process for the preparation of 4-nitrodiphenylamines

Details Process for the preparation of 4-nitrodiphenylamines Process for the preparation of 4-nitrodiphenylamines

1986-01-09

1987-05-12

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C07C 8504

Patent

active

046652329

ABSTRACT:
The reaction of 4-nitrohalobenzenes with primary aromatic amines in the presence of potassium carbonate and copper compounds to produce 4-nitrodiphenylamine results in products with improved purity and yield if (1) carbonic acid amides or their derivatives are added, (2) 3 to 5 mol of amine are used per mole of halonitrobenzene and (3) 1.2 to 2 mol of the amine are added before the beginning of the reaction and the remainder during the reaction at such a rate that the molar excessive amine over halonitrobenzene is always from 100 to 400%.

REFERENCES:
patent: 3313854 (1967-04-01), Levy
patent: 3435074 (1969-03-01), Terao et al.
patent: 4042627 (1977-08-01), Kalopissis et al.
patent: 4122118 (1978-10-01), George et al.
patent: 4209463 (1980-06-01), Maender et al.
patent: 4404400 (1983-09-01), Heise et al.
patent: 4614817 (1986-09-01), Maender et al.

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