Abstract
The tautomerism in 3-phenyl-4-arylazo-5-isoxazolones1 was examined by1H-NMR spectra of15N-labeled compound and by HMO method. Both spectra data (1H-NMR and IR) and bonding energies are in support of the assignment of the hydrazone structure to such compounds. It is further shown that intermolecular and intramolecular hydrogen bondings favor the hydrazone tautomer.
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Shawali, A.S., Alkaabi, S.S. & Abdallah, M.A. A study of azo-hydrazone tautomerism in 3-phenyl-4-arylazo-5-isozaolones by1H-NMR spectra of15N-labeled compounds and HMO method. Arch. Pharm. Res. 14, 237–241 (1991). https://doi.org/10.1007/BF02876862
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DOI: https://doi.org/10.1007/BF02876862