3-hydroxy-8-oxoquinazolo[3,2-a]-quinolines

Details 3-hydroxy-8-oxoquinazolo[3,2-a]-quinolines 3-hydroxy-8-oxoquinazolo[3,2-a]-quinolines

1984-11-19

1986-04-08

Berch, Mark L.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D47104

Patent

active

045814503

ABSTRACT:
Pigments that can be used to color plastics, paints, and printing inks have the structural formula ##STR1## wherein each R.sup.1, each R.sup.3, and R.sup.7 represent hydrogen, halogen, nitro, or lower alkyl and each R.sup.2, each R.sup.4, each R.sup.5, and R.sup.6 represent hydrogen or halogen.

REFERENCES:
patent: 4474952 (1984-10-01), Iqbal
patent: 4508899 (1985-02-01), Chamberlain
Bose et al., Chemical Abstracts, vol. 26, 12863 (1932).
Zeide et al., Chemical Abstracts, vol. 32, 5723 (1938).
Stephen et al., Chemical Abstracts, vol. 51, 6647h-6649a (1957).
Khalifa et al., Chemical Abstracts, vol. 99, 175560d (1983).

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