Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1999-01-26
2000-08-22
Richter, Johann
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
548452, 548512, 548186, 548240, 548243, 5483147, 5483167, 548406, 548412, 548398, 5482704, 548 14, 544361, 544255, 544129, 534560, 534561, 8552, 106 3146, 106499, C07D48702, C07D20940, C07D21306, C07D40104, C09B 6722
Patent
active
061074918
ABSTRACT:
Diketopyrrolopyrroles of formula I ##STR1## wherein R.sub.1 is a radical of formula II
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Derwent Abstr. 89-302657/42 for EP 0337951 (1989).
Derw. Abst. 97-387439 [36] of EP 787,731 (1997).
Chan, W-K et al.. J. Amer. Chem. Soc. vol. 115 (25) pp. 11735-11743 (1993).
Ciba Specialty Chemicals Corporation
Crichton David R.
Keating Dominic
Richter Johann
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