Process for the preparation of 4-nitrodiphenylamines

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

1987-02-09

1988-11-01

Hollrah, Glennon H.

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

Organic compounds

Amino nitrogen containing

564414, 564435, C07C 8504

Patent

active

047821850

ABSTRACT:
With a far shorter reaction time, azeotropic distillation of the water in the condensation of 4-nitrohalogenobenzenes and primary aromatic amines or formyl derivatives thereof in the presence of potassium carbonate and, if appropriate, copper compounds can be dispensed with if the reaction is carried out in the presence of Al metal, Mg metal or Zn metal or mixtures or alloys of these metals.

REFERENCES:
patent: 4435599 (1984-03-01), Sturm
patent: 4683332 (1987-07-01), Sturm
Szmadja, J. et al., Chemical Abstracts, vol. 91, No. 192970q, (1979).

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