Preparation of unsymmetrical diphenylamines

Details Preparation of unsymmetrical diphenylamines Preparation of unsymmetrical diphenylamines

1982-03-22

1984-11-27

Waltz, Thomas A.

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

Organic compounds

Amino nitrogen containing

564403, C07C 9144, C07C 8506

Patent

active

044852606

ABSTRACT:
There is disclosed a process for the production of unsymmetrical, substituted diarylamines by the reaction of a primary aromatic amine and a substituted phenol wherein the phenol is held in excess of the primary aromatic amine thereby minimizing by-product formation as a result of self-condensation of the primary arylamine. The desired secondary amine is produced in high yield and purity by recycling the unreacted phenol.

REFERENCES:
patent: 1885355 (1932-11-01), Jones
patent: 2000410 (1935-05-01), Morrell et al.
patent: 2013052 (1935-09-01), Horsley
patent: 3170956 (1965-02-01), Olin

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