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Collect. Czech. Chem. Commun. 1987, 52, 727-735
https://doi.org/10.1135/cccc19870727

13C and 15N NMR spectra of 3-methyl-1-phenylpyrazole-4,5-dione 4-(4'-substituted phenyl)hydrazones

Antonín Lyčkaa, Tibor Liptajb and Josef Jirmana

a Research Institute of Organic Syntheses, 532 18 Pardubice-Rybitví
b Department of Physical Chemistry, Slovak Institute of Technology, 812 37 Bratislava

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  • Burgart Yanina V., Elkina Natalia A., Shchegolkov Evgeny V., Krasnykh Olga P., Makhaeva Galina F., Triandafilova Galina A., Solodnikov Sergey Yu., Boltneva Natalia P., Rudakova Elena V., Kovaleva Nadezhda V., Serebryakova Olga G., Ulitko Mariya V., Borisevich Sophia S., Gerasimova Natalia A., Evstigneeva Natalia P., Kozlov Sergey A., Korolkova Yuliya V., Minin Artem S., Belousova Anna V., Mozhaitsev Evgenii S., Klabukov Artem M., Saloutin Victor I.: Powerful Potential of Polyfluoroalkyl-Containing 4-Arylhydrazinylidenepyrazol-3-ones for Pharmaceuticals. Molecules 2022, 28, 59. <https://doi.org/10.3390/molecules28010059>
  • Deneva V., Lyčka A., Hristova S., Crochet A., Fromm K.M., Antonov L.: Tautomerism in azo dyes: Border cases of azo and hydrazo tautomers as possible NMR reference compounds. Dyes and Pigments 2019, 165, 157. <https://doi.org/10.1016/j.dyepig.2019.02.015>
  • Lyčka Antonín: 15 N NMR study of ( E )- and ( Z )-2-(2-(2-hydroxy-4-nitrophenyl)hydrazono)-1-phenylbutane-1,3-diones. A suitable method for analysis of hydrazone isomers. Dyes and Pigments 2018, 150, 181. <https://doi.org/10.1016/j.dyepig.2017.10.023>
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  • Lyčka A., Mustroph H.: 1H, 13C and 15N NMR spectra of the reaction product of benzenediazonium fluoroborates with 1-phenyl-3-methyl-4-(α-acet-ethylidene)-pyrazol-5-one. J Dye Pig 1997, 34, 101. <https://doi.org/10.1016/S0143-7208(96)00069-1>
  • Kessenikh A. V., Shmelev L. V.: 15N NMR spectroscopy of 5-(2-heteroaryl)formazans and their zinc and cadmium chelates. Chem Heterocycl Compd 1995, 31, 1112. <https://doi.org/10.1007/BF01165059>
  • Lyčka Antonin: 19F-NMR study of azo-hydrazone tautomerism of some fluorine-containing azo dyes. J Dye Pig 1990, 12, 179. <https://doi.org/10.1016/0143-7208(90)85010-L>
  • Lyčka Antonín, Mustroph Heinz: 15N‐ and 13C‐N.M.R. Study of Azo‐hydrazone Tautomerism of 3‐methyl‐1‐phenylpyrazole‐4,5‐dione 4‐phenylhydrazone in dimethyl sulphoxide and pyridine. J. Prakt. Chem. 1989, 331, 11. <https://doi.org/10.1002/prac.19893310103>
  • Mustroph Heinz: Blaue Azofarbstoffe auf der Basis von 3‐Cyano‐6‐hydroxy‐2‐pyridonen. Zeitschrift fuer Chemie 1989, 29, 422. <https://doi.org/10.1002/zfch.19890291120>
  • Lyčka Antonín, Jirman Josef, Podstata Jiří: Two-dimensional 1H- and 13C-NMR and 15N-NMR spectra of three azo dyes derived from J-acid and 4-nitroaniline. Dyes and Pigments 1987, 8, 465. <https://doi.org/10.1016/0143-7208(87)85038-6>