4-Carboxyl-2,6-dinitrophenylazohydroxynaphathalenes tautomerism NMR re-explained

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18470%2F17%3A50005558" target="_blank" >RIV/62690094:18470/17:50005558 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0143720817300955" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0143720817300955</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.dyepig.2017.03.003" target="_blank" >10.1016/j.dyepig.2017.03.003</a>

Result language
angličtina
Original language name
4-Carboxyl-2,6-dinitrophenylazohydroxynaphathalenes tautomerism NMR re-explained
Original language description
(1Z)-1-[2-(2-Nitrophenyl)hydrazinylidene]naphthalen-2(1H)-one (1), (4Z)-5-methyl-2-phenyl-4-(2-phenylhydrazinylidene)-2,4-dihydro-3H-pyrazol-3-one (2), (4Z)-5-methyl-4-[2-(2-nitrophenyl)hydrazinylidene]-2-phenyl-2,4-dihydro-3H-pyrazol-3-one (3) and 3,5-dinitro-4-[(2Z)-2-(2-oxonaphthalen-1(2H)-ylidene)hydrazinyl]benzoic acid (4) were prepared and one- and two-dimensional 15N, 13C and 1H NMR spectra were measured and analysed. Results obtained were used in characterization of these compounds from viewpoint of azo-hydrazo tautomerism. All these compounds exist almost completely in appropriate hydrazo forms in dimethyl sulfoxide. Advantages of NMR spectroscopy application in determination of acidic proton positions and azo-hydrazo content determination are discussed.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10401 - Organic chemistry

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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