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TAUTOMERIC FORMS OF ARYLHYDRAZONES OF 3-FORMYL-4-HYDROXYCOUMARIN

В. С. Лебедев, Б. Г. Милевский, Н. П. Соловьёва, Т. А. Чибисова, О. Н. Кажева, О. А. Дьяченко, Г. Г. Александров, В. Ф. Травень
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Abstract


Tautomericforms of arylhydrazones of 3-formyl-4-hydroxycoumarin were studied by 1Hand 13CNMR spectroscopy, X-Ray analysis and mass-spectrometry. These compounds existmainly as 4-hydroxycoumarin tautomeric form both in solution (DMSO) and in gasphase; chromane-2,4-dione is a minor form of these compounds. 4-hydroxycoumarintautomeric form has been only detected in solid state.

How to Cite
Lebedev, V. S.; Milevskii, B. G.; Solov'eva, N. P.; Chibisova, T. A.; Kazheva, O. N.; Dyachenko, O. A.; Alexandrov, G. G.; Traven, V. F. Chem. Heterocycl. Compd. 2014, 50, 1081. [Khim. Geterotsikl. Soedin. 2014, 1174.]

For this article in the English edition see DOI 10.1007/s10593-014-1567-3

Keywords


hydrazones, 3-formyl-4-hydroxycoumarin, 1H and 13C NMR spectroscopy, X-Ray analysis, mass-spectrometry, tautomeric forms, 15N nitrogen isotope

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