Pyrrolo[3,4-c]pyrroles containing cyanimino groups

Details Pyrrolo[3,4-c]pyrroles containing cyanimino groups Pyrrolo[3,4-c]pyrroles containing cyanimino groups

1995-03-21

1996-06-18

Springer, David B.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548181, 548215, 546199, 546256, 5462701, 5462717, 5462734, 5462727, 5462754, 5462714, 5462724, 5462767, 546193, 546194, 546200, 546198, 544153, 544373, C07D48704

Patent

active

055279228

ABSTRACT:
The invention relates to pyrrolo[3,4-c]pyrroles of formula ##STR1## wherein D and E are each independently of the other hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.4 alkenyl, C.sub.7 -C.sub.10 aralkyl, unsubstituted phenyl or phenyl which is substituted by chloro, bromo, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.4 alkoxy, trifluoromethyl or nitro, or --COO--C.sub.1 -C.sub.5 alkyl or a group --COOR.sub.8,
wherein R.sub.8 is benzyl, piperidyl or a group ##STR2## and X and Y are N--CN or O, with the proviso that at least one of X or Y N--CN must be N--CN.
These pyrrolo[3,4-c]pyrroles are preeminently suitable for use as colorants, i.e. as pigments or as polymer-soluble dyes, for colouring high molecular weight organic material. They are distinguished by unexpectedly high solid-state fluorescence.
The substituents A and B are as defined in claim 1.

REFERENCES:
patent: 4415685 (1983-11-01), Iqbal et al.
patent: 4579949 (1986-04-01), Rochat et al.
patent: 4585878 (1986-04-01), Jost et al.
patent: 5017706 (1991-05-01), Rochat et al.
S. Hunig et al., Angew Chem. 96, 437 (1984).
S. Hunig, et al., Angew Chem. 102, 220 (1990).

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