Aniline derivatives useful as color formers

Details Aniline derivatives useful as color formers Aniline derivatives useful as color formers

1991-12-23

1994-05-24

Dees, Jose G.

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

Organic compounds

Phosphorus acids or salts thereof

558166, 560 43, 562 12, 562 14, 562 15, C07F 938

Patent

active

053150350

ABSTRACT:
The present invention is concerned with aniline derivatives of the general formula: ##STR1## wherein R.sub.1 is hydrogen or a lower alkyl or aryl, R.sub.2 is hydrogen or a lower alkyl which can be substituted by hydroxyl, amino carboxyl, lower alkoxycarbonyl, lower alkanoylamide lower alkyl or aryl or by a group of the structure ##STR2## is which R.sub.5 and R.sub.6 have the meanings given hereinafter, R.sub.3 is a hydrogen or halogen atom or a carboxyl group, R.sub.4 and R'.sub.4, which can be the same or different, are hydrogen or halogen, carboxyl or lower alkoxy or lower alkyl radicals which are preferably in the m-position, R.sub.5 is hydrogen or a lower alkyl and R.sub.6 is hydroxyl or a lower alkoxy, lower alkyl or aryl radical; and of the salts thereof with acids and bases useful as a color former in the Trinder reaction for the detection of hydrogen peroxide or hydrogen peroxide-forming systems or peroxidase or peroxidate-acting substances or together with an oxidation agent for the detection of aromatic amines or of systems forming such amines.

REFERENCES:
patent: 5084382 (1992-01-01), Frey et al.
Fredericks et al., Z. Naturforsch, 36c, pp. 242-245 (1981).

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