N-15 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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18470%2F18%3A50014359" target="_blank" >RIV/62690094:18470/18:50014359 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0143720817318429" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0143720817318429</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.dyepig.2017.10.023" target="_blank" >10.1016/j.dyepig.2017.10.023</a>

Result language

angličtina

Original language name

N-15 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

Original language description

The one- and two-dimensional N-15 NMR spectra of (E)- and (Z)-2-(2-(2-hydroxy-4-nitrophenyl)hydrazono)-1-phenylbutane-1,3-diones (1) were measured and analysed and N-15 chemical shifts and (1)J (N-15, H-1) coupling constants were used for characterization of these two compounds from the viewpoint of azo-hydrazo tautomerism. Both compounds exist completely in appropriate hydrazo forms in dimethyl sulfoxide. Advantages of N-15 NMR spectroscopy application in determination of acidic proton positions and azo-hydrazo content determination are discussed. We would like to propose the application of 15N NMR data measured at the natural abundance level of N-15 as the &quot;first glance&quot; and strongest evidence method for the existence of hydrazo form in azo dyes and for differentiation of E- and Z-isomers around C = N-beta double bond.

Czech name

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Czech description

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Type

J_imp - 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

Project

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Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Dyes and pigments

ISSN

0143-7208

e-ISSN

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Volume of the periodical

150

Issue of the periodical within the volume

March

Country of publishing house

GB - UNITED KINGDOM

Number of pages

4

Pages from-to

181-184

UT code for WoS article

000427332200024

EID of the result in the Scopus database

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