Diketopyrrolopyrroles

Details Diketopyrrolopyrroles Diketopyrrolopyrroles

1992-04-20

1993-04-06

Springer, David B.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544106, 544373, 546199, 546271, C07D48700, C07D48702

Patent

active

052005283

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: 4791204 (1988-12-01), Jost et al.
Chem. Abstract 111:196751y, 1987.
Chem. Abstract 113:61388f, 1988.

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