Chemistry of Heterocyclic Compounds p. 1443 - 1450 (1999)
Update date:2022-08-02
Topics: Condensation Reactions Anhydrides
Neilands
Shebenina
Pukitis
Reaction of substituted phthalic acids or their anhydrides (including pyromellitic dianhydride) with salts of N-carboxymethylpyridinium and substituted N-carboxymethylpyridinium in the presence of acetic anhydride and triethylamine in acetonitrile or acetic acid solutions gave a series of novel N-(1H-indene-1,3(2H)-dion-2-yl)pyridinium betaines. Electron acceptor substitutents in the phthaloyl and pyridine rings were found to increase and electron donor substituents - to decrease the reactivity. 1999 Kluwer Academic/Plenum Publishers.
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