1982
DOI: 10.1002/chin.198202104
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ChemInform Abstract: REACTION OF DICARBOXYLIC ACID ANHYDRIDES OF SIX‐MEMBERED NITROGEN HETEROCYCLES WITH CH ACID COMPOUNDS

Abstract: Die Anhydride der Cinchomeronsäure (Ia) und der 2,3‐Pyrazindicarbonsäure (Ib) reagieren mit Malonsäurediethylester (II), Thiazolidindion (IVa), N‐Phenylthiazolidindion (IVb) und dem Rhodanin (VI) in Gegenwart von Triethylamin bzw. in Pyridin in Gegenwart von wenig Piperidin zu Aza‐ und Diazaphthalyliden‐Derivaten (III), (V) und (VII).

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