Preparation of N-substituted-N'-phenyl p-phenylenediamines

Details Preparation of N-substituted-N'-phenyl p-phenylenediamines Preparation of N-substituted-N'-phenyl p-phenylenediamines

1993-03-22

1994-12-06

Hollinden, Gary E.

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

Organic compounds

Amino nitrogen containing

564434, C07C20922

Patent

active

053712897

ABSTRACT:
The present invention relates to a process for the preparation of a N-substituted-N'-phenyl-p-phenylenediamine of the formula: ##STR1## comprising reacting (a) a mixture of (1) N-phenyl-p-quinoneimine of the formula: ##STR2## and (2) p-hydroxydiphenylamine in a mole ratio of N-phenyl-p-quinoneimine to p-hydroxydiphenylamine of from 1.5:1 to 1:1.5 with (b) a primary amine of the formula:

REFERENCES:
patent: 4968843 (1990-11-01), Cottman
patent: 5053540 (1991-10-01), Cottman
Radel et al, Industrial Engineering Chemical Products Res. Dev. 1982, 21, 566-570.
Gelling et al, Plastics and Rubber:Processing, Sep. 1977, pp. 83-86.
Chemical Abstracts FR 2659-650-A, week 9148 (1991).
Chemical Abstracts FR 2659-651-A, week 9148 (1991).
Chemical Abstracts EP 452-168-A, week 9142 (1991).

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