Spectroscopic Studies of Amino Acid Ionic Liquid-Supported Schiff Bases

Amino acid ionic liquid-supported Schiff bases, derivatives of salicylaldehyde and various amino acids (l-threonine, l-valine, l-leucine, l-isoleucine and l-histidine) have been investigated by means of various spectroscopic techniques (NMR, UV-Vis, IR, MS) and deuterium isotope effects on (13)C-NMR...

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Autores principales: Ossowicz, Paula, Janus, Ewa, Schroeder, Grzegorz, Rozwadowski, Zbigniew
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2013
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6269710/
https://www.ncbi.nlm.nih.gov/pubmed/23629755
http://dx.doi.org/10.3390/molecules18054986
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author Ossowicz, Paula
Janus, Ewa
Schroeder, Grzegorz
Rozwadowski, Zbigniew
author_facet Ossowicz, Paula
Janus, Ewa
Schroeder, Grzegorz
Rozwadowski, Zbigniew
author_sort Ossowicz, Paula
collection PubMed
description Amino acid ionic liquid-supported Schiff bases, derivatives of salicylaldehyde and various amino acids (l-threonine, l-valine, l-leucine, l-isoleucine and l-histidine) have been investigated by means of various spectroscopic techniques (NMR, UV-Vis, IR, MS) and deuterium isotope effects on (13)C-NMR chemical shifts. The results have shown that in all studied amino acid ionic liquid-supported Schiff bases (except the l-histidine derivative) a proton transfer equilibrium exists and the presence of the COO(−) group stabilizes the proton transferred NH-form.
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spelling pubmed-62697102018-12-14 Spectroscopic Studies of Amino Acid Ionic Liquid-Supported Schiff Bases Ossowicz, Paula Janus, Ewa Schroeder, Grzegorz Rozwadowski, Zbigniew Molecules Article Amino acid ionic liquid-supported Schiff bases, derivatives of salicylaldehyde and various amino acids (l-threonine, l-valine, l-leucine, l-isoleucine and l-histidine) have been investigated by means of various spectroscopic techniques (NMR, UV-Vis, IR, MS) and deuterium isotope effects on (13)C-NMR chemical shifts. The results have shown that in all studied amino acid ionic liquid-supported Schiff bases (except the l-histidine derivative) a proton transfer equilibrium exists and the presence of the COO(−) group stabilizes the proton transferred NH-form. MDPI 2013-04-29 /pmc/articles/PMC6269710/ /pubmed/23629755 http://dx.doi.org/10.3390/molecules18054986 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland. http://creativecommons.org/licenses/by/3.0/ This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Ossowicz, Paula
Janus, Ewa
Schroeder, Grzegorz
Rozwadowski, Zbigniew
Spectroscopic Studies of Amino Acid Ionic Liquid-Supported Schiff Bases
title Spectroscopic Studies of Amino Acid Ionic Liquid-Supported Schiff Bases
title_full Spectroscopic Studies of Amino Acid Ionic Liquid-Supported Schiff Bases
title_fullStr Spectroscopic Studies of Amino Acid Ionic Liquid-Supported Schiff Bases
title_full_unstemmed Spectroscopic Studies of Amino Acid Ionic Liquid-Supported Schiff Bases
title_short Spectroscopic Studies of Amino Acid Ionic Liquid-Supported Schiff Bases
title_sort spectroscopic studies of amino acid ionic liquid-supported schiff bases
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6269710/
https://www.ncbi.nlm.nih.gov/pubmed/23629755
http://dx.doi.org/10.3390/molecules18054986
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