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The triazepine structure, previously reported for the products obtained when hydrazine reacted with the compounds formed in a Friedel–Crafts reaction of phthalanthranilic acid with various nucleophiles, has been shown to be incorrect. The correct structures for these compounds, verified by X-ray studies, are reported, and a mechanism for their formation is suggested.
M. Lamchen, J. Chem. Soc. C, 1966, 573 DOI: 10.1039/J39660000573
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