CHROMOGEN PHTHALIDE AND AZA-PHTHALIDE

摘要

Chromogenic phthalides and azaphthalides of the formula (1) in which V1 and V2 are each, independently of the other, hydrogen, halogen, lower alkyl, lower alkoxy, (lower alkoxy)carbonyl or -NR1R2, at least one of the radicals V1 and V2 being lower alkoxy or -NR1R2, 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 (1a) (1b) or a 3-indolyl of the formula (1c) Q is -S- or -O-, R1, R2, R3 and R4 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 (R1 and R2) and (R3and R4) are each, independently of each other, together with the nitrogen atom joining them, a five- or six-membered, heterocyclic radical, Y1 is hydrogen, lower alkyl, cycloalkyl, phenalkyl or phenyl, Y2 is hydrogen, lower alkyl or phenyl, Z1 and Z2 are each, hydrogen, unsubstituted or halogen-, hydroxyl-, cyano- or (lower alkoxy)-substituted alkyl acyl or unsubstituted or substituted benzyl, X is hydrogen, halogen, lower alkyl, C1-C12-alkoxy, C1-C12-acyloxy, benzyl, phenyl, benzyloxy, phenyloxy, halogen-, cyano-, (lower alkyl)- or (lower alkoxy)-substituted benzyl or benzyloxy, or the group -NT1T2, T1 and T2 are each, independently of the other, hydrogen, lower alkyl, cycloalkyl, unsubstituted or substituted benzyl or acyl and T1 is also unsubstituted or substituted phenyl, and the benzene nucleus D is unsubstituted or substituted. These phthalides and azaphthalides are suitable in particular for use as color formers in pressure- or heat-sensitive recording materials and produce green, greenish blue, greyish blue, blue or violet-blue colors.