3-(9-Julolidinyl)-3-(diphenylamino)phthalides

Details 3-(9-Julolidinyl)-3-(diphenylamino)phthalides 3-(9-Julolidinyl)-3-(diphenylamino)phthalides

1977-08-04

1979-09-18

Daus, Donald G.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

2603434, 282 275, C07D21538

Patent

active

041683781

ABSTRACT:
3-[4-Disubstituted-amino)phenyl] or (9-julolidinyl)-3-(diphenylamino)phthalides useful as color formers in pressure-sensitive and thermal marking systems are prepared by reaction of 2-[4-disubstituted-amino)benzoyl] or (9-julolidinyl-carbonyl)benzoic acids with diphenylamines.

REFERENCES:
patent: 3920667 (1975-11-01), Idelson
patent: 4032527 (1977-06-01), Crounse et al.
patent: 4046776 (1977-09-01), Gaucher et al.

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