Chromogenic phthalides and azaphthalides

Details Chromogenic phthalides and azaphthalides Chromogenic phthalides and azaphthalides

1989-08-24

1991-04-02

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544 79, 544 80, 544126, 544127, 544130, 544143, 544146, 544153, 544345, 544350, 546 89, 546116, 546187, 546196, 546201, 546203, 548456, 549 51, 549 57, 549307, 549310, C07D40504, C07D40704

Patent

active

050048139

ABSTRACT:
Chromogenic phthalides and azaphthalides of the formula ##STR1## in which V.sub.1 and V.sub.2 are each, independently of the other, hydrogen, halogen, lower alkyl, lower alkoxy, (lower alkoxy)carbonyl or --NR.sub.1 R.sub.2, at least one of the radicals V.sub.1 and V.sub.2 being lower alkoxy or --NR.sub.1 R.sub.2, A is an unsubstituted or halogen-, cyano-, nitro-, (lower alkyl)-, (lower alkoxy)-, (lower alkyl)thio-, (lower alkyl)amino- or di(lower alkyl)amino-substituted benzene, naphthalene, pyridine, quinoline, pyrazine or quinoxaline ring, B is a substituted phenyl radical of the formula ##STR2## or a 3-indolyl of the formula ##STR3## Q is ##STR4## --S-- or --O--, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each, independently of the others, hydrogen, unsubstituted or halogen-, hydroxy-, cyano- or (lower alkoxy)-substituted alkyl, cycloalkyl or unsubstituted or ringsubstituted phenalkyl or phenyl, or the substituent pairs (R.sub.1 and R.sub.2) and (R.sub.3 and R.sub.4) are each, independently of each other, together with the nitrogen atom joining them, a five- or six-membered, heterocyclic radical,

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