Pseudo-cyclic Face-to-face Rigid Structure Caused by the Intramolecular Ion Pair Effect

Six 3-methylpyridine zwitterions and six quinoline zwitterions were synthesized through the reaction of 4-hydroxycoumarins, p-benzoquinone and the corresponding N-aromatics. The novel pseudo-cyclic face-to-face rigid structure of the zwitterion was elucidated by (1)H-NMR at different temperatures, a...

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Detalles Bibliográficos
Autores principales: Zhang, Sheng-Ling, Huang, Zhi-Shu, Gu, Lian-Quan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2009
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6254276/
https://www.ncbi.nlm.nih.gov/pubmed/19384284
http://dx.doi.org/10.3390/molecules14041546
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author Zhang, Sheng-Ling
Huang, Zhi-Shu
Gu, Lian-Quan
author_facet Zhang, Sheng-Ling
Huang, Zhi-Shu
Gu, Lian-Quan
author_sort Zhang, Sheng-Ling
collection PubMed
description Six 3-methylpyridine zwitterions and six quinoline zwitterions were synthesized through the reaction of 4-hydroxycoumarins, p-benzoquinone and the corresponding N-aromatics. The novel pseudo-cyclic face-to-face rigid structure of the zwitterion was elucidated by (1)H-NMR at different temperatures, and assumed to be caused by both the intramolecular ion pair attraction and the steric interaction.
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spelling pubmed-62542762018-11-30 Pseudo-cyclic Face-to-face Rigid Structure Caused by the Intramolecular Ion Pair Effect Zhang, Sheng-Ling Huang, Zhi-Shu Gu, Lian-Quan Molecules Article Six 3-methylpyridine zwitterions and six quinoline zwitterions were synthesized through the reaction of 4-hydroxycoumarins, p-benzoquinone and the corresponding N-aromatics. The novel pseudo-cyclic face-to-face rigid structure of the zwitterion was elucidated by (1)H-NMR at different temperatures, and assumed to be caused by both the intramolecular ion pair attraction and the steric interaction. Molecular Diversity Preservation International (MDPI) 2009-04-14 /pmc/articles/PMC6254276/ /pubmed/19384284 http://dx.doi.org/10.3390/molecules14041546 Text en © 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland. 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
Zhang, Sheng-Ling
Huang, Zhi-Shu
Gu, Lian-Quan
Pseudo-cyclic Face-to-face Rigid Structure Caused by the Intramolecular Ion Pair Effect
title Pseudo-cyclic Face-to-face Rigid Structure Caused by the Intramolecular Ion Pair Effect
title_full Pseudo-cyclic Face-to-face Rigid Structure Caused by the Intramolecular Ion Pair Effect
title_fullStr Pseudo-cyclic Face-to-face Rigid Structure Caused by the Intramolecular Ion Pair Effect
title_full_unstemmed Pseudo-cyclic Face-to-face Rigid Structure Caused by the Intramolecular Ion Pair Effect
title_short Pseudo-cyclic Face-to-face Rigid Structure Caused by the Intramolecular Ion Pair Effect
title_sort pseudo-cyclic face-to-face rigid structure caused by the intramolecular ion pair effect
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6254276/
https://www.ncbi.nlm.nih.gov/pubmed/19384284
http://dx.doi.org/10.3390/molecules14041546
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AT huangzhishu pseudocyclicfacetofacerigidstructurecausedbytheintramolecularionpaireffect
AT gulianquan pseudocyclicfacetofacerigidstructurecausedbytheintramolecularionpaireffect

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