Diketopyrrolopyrroles

Details Diketopyrrolopyrroles Diketopyrrolopyrroles

1992-12-16

1994-08-30

Springer, David B.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

106493, 5482672, 5483644, 5483051, 5483054, 5483117, 5483647, C07D40314, C09B 700

Patent

active

053429559

ABSTRACT:
1,4-Diketopyrrolo[3,4-c]pyrroles of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen, Cl, Br, CH.sub.3, OCH.sub.3, CN or phenyl, and at least one of the substituents R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is a group

REFERENCES:
patent: 4585878 (1986-04-01), Jost et al.
patent: 4666455 (1987-05-01), Jost et al.
patent: 4791204 (1988-12-01), Jost et al.
patent: 4931566 (1990-05-01), Surber et al.
Chem. Abstr. 111: 196751y (1988).
Chem. Abstr. 113: 61388f (1990).

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