Isoindoline dyes, their preparation and use

Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system

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542421, 544 63, 544 80, 544 96, 544114, 544121, 544122, 544129, 544130, 544137, 544139, 544140, 544238, 544333, 544364, 544373, 546200, 548215, 548240, 548300, 548356, 8649, 8657, 106288Q, 544232, 544243, 544337, 548470, C07D20944, C07D40110, C07D40310, C07D41310

Patent

active

043731023

ABSTRACT:
Novel dyes of the formula ##STR1## where A is cyano, carbo-C.sub.1 -C.sub.4 -alkoxy, carbamyl, N-C.sub.1 -C.sub.4 -alkylcarbamyl, N-phenylcarbamyl, acetyl, benzoyl, 4-nitrophenyl or 4-cyanophenyl,

REFERENCES:
patent: 3646033 (1972-02-01), Leister et al.
patent: 3706525 (1972-12-01), Blackwell et al.
patent: 4051099 (1977-09-01), von der Crone
Micheel et al., Chem. Ber. 94, 1749 (1961).
Elser et al., Chem. Abs. 79, 20304m (1973).

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