3-(Pyrrolo and 3-indolyl)-3-diphenylamino substituted phthalides

Details 3-(Pyrrolo and 3-indolyl)-3-diphenylamino substituted phthalides 3-(Pyrrolo and 3-indolyl)-3-diphenylamino substituted phthalides

1980-04-28

1984-02-14

Daus, Donald G.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548525, 549303, C07D40504, C07D40514, C07D30783

Patent

active

044318197

ABSTRACT:
3-Heteroaryl-3-(diphenylamino)phthalides useful as color formers in pressure-sensitive carbonless duplicating systems, thermal marking systems and hectographic copying systems are prepared by reacting 2-(heteroarylcarbonyl)benzoic acids with diphenylamines.

REFERENCES:
patent: 2997481 (1961-08-01), Wheeler et al.
patent: 4186134 (1980-01-01), Garner et al.
patent: 4191690 (1980-03-01), Burri
Miyazawa, Chem. Abstracts, vol. 85, (1976), p. 22774n.

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