N-substituted 1,4-diketopyrrolo-[3,4-c]-pyrroles

Details N-substituted 1,4-diketopyrrolo-[3,4-c]-pyrroles N-substituted 1,4-diketopyrrolo-[3,4-c]-pyrroles

1984-06-18

1986-04-29

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548455, C07D48704

Patent

active

045858780

ABSTRACT:
Compounds of the formula ##STR1## in which R.sub.1 and R.sub.2 are unsubstituted or substituted phenyl or naphthyl, and R.sub.3 and R.sub.4 are alkyl, alkoxycarbonyl, phenyl, benzoyl or benzyl, are suitable for dyeing high molecular weight organic material.

REFERENCES:
patent: 4415685 (1983-11-01), Iqbal et al.
patent: 4490542 (1984-12-01), Iqbal et al.
J. M. Sprake et al., J. Chem. Soc., 1976, pp. 5-8.
D. G. Farnum et al., Tetrahedron Letters, 29, 2549 (1974).

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