Chromogenic quinazolines

Details Chromogenic quinazolines Chromogenic quinazolines

1981-01-22

1984-10-30

Daus, Donald G.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

544116, 544284, C07D23991

Patent

active

044800967

ABSTRACT:
Chromogenic quinazolines of the formula ##STR1## wherein Y is an amino-substituted phenyl radical of the formula ##STR2## or a 3-carbazolyl radical of the formula ##STR3## and Z is hydrogen, R.sub.1, --OR.sub.1 ', --SR.sub.1 ' or --NR.sub.2 R.sub.3,
These compounds are particularly suitable for use as color formers in pressure-sensitive or heat-sensitive recording materials and give lightfast yellow, orange and red colorations.

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Bischler and Barad, "Zur Kenntnis der Phenmiazin derivate," Ber. 25, 3080-3097 (1892).
Bischler and Howell, "Zur Kenntnis der Phenmiazin derivate," Ber. 26, 1384-1399 (1893).
Armarego, "Quinazolines. Part Iv. Covalent Hydration in the Cations of Substituted Quinazolines," J. Chem. Soc. 1962, 561-572.

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