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Azolium-based systems: application of an anion exchange resin (A- form) method and 1H NMR analysis of the charged-assisted (C
H)+·anion hydrogen bonds
Dinarès Milà, M. Immaculada; Mesquida Estévez, Ma. Neus; Ibáñez Jiménez, Anna; Alcalde Pais, Ma. Ermitas (María de las Ermitas)
Universitat de Barcelona
The counteranion exchange of quaternary 1,2,3-triazolium salts was examined using a simple method that permitted halide ions to be swap for a variety of anions using an anion exchange resin (A¯ form). The method was applied to 1,2,3-triazolium-based ionic liquids and the iodideto- anion exchange proceeded in excellent to quantitative yields, concomitantly removing halide impurities. Additionally, an anion exchange resin (N3¯ form) was used to obtain the benzyl azide from benzyl halide under mild reaction. Likewise, following a similar protocol, bis(azidomethyl)arenes were also synthesized in excellent yields. The results of a proton NMR spectroscopic study of simple azolium-based ion pairs are discussed, with attention focused on the significance of the charged-assisted (C
H)+···anion hydrogen bonds of simple azolium systems such as 1-butyl-3-methylimidazolium and 1-benzyl-3-methyl-1,2,3-triazolium salts.
Sals
Imidazoles
Resines de bescanvi iònic
Hidrogen
Solucions iòniques
Compostos heterocíclics
Salts
Imidazoles
Ion exchange resins
Hydrogen
Ionic solutions
Heterocyclic compounds
cc-by-nc (c) Dinarès Milà, M. Immaculada et al., 2013
http://creativecommons.org/licenses/by-nc/3.0/es
Artículo
info:eu-repo/semantics/publishedVersion
Michigan Publishing
         

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