Diphenylamino and indolyl substituted pyromellitides

Details Diphenylamino and indolyl substituted pyromellitides Diphenylamino and indolyl substituted pyromellitides

1981-08-19

1983-11-22

Daus, Donald G.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549299, C07D40504, C07D40514

Patent

active

044170599

ABSTRACT:
This invention relates to 3,7-bis(disubstituted aminophenyl- or indolyl)-3,7-bis(diphenylamino)pyromellitides, 3,5-bis(disubstituted aminophenyl- or indolyl)-3,5-bis(diphenylamino)pyromellitides and mixtures thereof useful as color formers, particularly in carbonless duplicating and thermal marking systems, which are prepared by the interaction of 2,5-bis(disubstituted aminophenyl- or indolyl)carbonyl-1,4-benzenedicarboxylic acids or 2,4-bis(disubstituted aminophenyl- or indolyl)carbonyl-1,5-benzenedicarboxylic acids and mixtures thereof with diphenylamines.

REFERENCES:
patent: 3268537 (1966-08-01), Gosnell et al.
patent: 3491117 (1970-01-01), Lin
patent: 4168378 (1979-09-01), Schmidt et al.
patent: 4182714 (1980-01-01), Schmidt et al.
Fawcett, Cassidy and Lin, Journal of Organic Chemistry, vol. 42, No. 17, 2929-2930, (1977).

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