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Hydrazones derived from thiooxamohydrazides and 3-formyl-4-hydroxycoumarin: synthesis, structures, and fragmentation |
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| Authors: | B. G. Milevsky N. P. Solov’eva T. A. Chibisova V. N. Yarovenko E. S. Zayakin V. V. Chernyshev M. M. Krayushkin V. F. Traven |
| Affiliation: | 1. D. I. Mendeleyev University of Chemical Technology of Russia, 9 Miusskaya pl., 125047, Moscow, Russian Federation 2. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991, Moscow, Russian Federation 3. Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 119991, Moscow, Russian Federation 4. A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991, Moscow, Russian Federation |
| Abstract: | Novel hydrazones were obtained from thiooxamohydrazides and 3-3-formyl-4-hydroxycoumarin. According to data from NMR spectroscopy and X-ray diffraction, the coumarin fragment in the compounds obtained exists as 4-hydroxycoumarin or chromane-2,4-dione. When dissolved in dimethyl sulfoxide, these hydrazones undergo fragmentation into derivatives of 1,3,4-thiadiazole and 4-hydroxycoumarin. |
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