Demonstrates the formation of triazaspiro compounds in a chemical reaction, suggesting potential applications in organic synthesis.
1-Antipyryl-4-aroyl-5-methoxycarbonyl-1H-pyrrole-2,3-diones react with 1,3-diphenylguanidine to form 6-antipyryl-9-aroyl-8-hydroxy-2-imino-1,3-diphenyl-1,3,6-triazaspiro[4.4]non-8-en-4,7-diones, the structure of which was confirmed by 'H NMR and IR spectroscopy.
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V.A. Lyadov (2025) studied this question.
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