Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/50799
Title: A simple halide-to-anion exchange method for heteroaromatic salts and ionic liquids
Author: Alcalde Pais, Ma. Ermitas (María de las Ermitas)
Dinarès Milà, M. Immaculada
Ibáñez Jiménez, Anna
Mesquida Estévez, Ma. Neus
Keywords: Sals
Solucions iòniques
Compostos heterocíclics
Salts
Ionic solutions
Heterocyclic compounds
Issue Date: 2-Apr-2012
Publisher: MDPI Publishing
Abstract: A broad and simple method permitted halide ions in quaternary heteroaromatic and ammonium salts to be exchanged for a variety of anions using an anion exchange resin (A− form) in non-aqueous media. The anion loading of the AER (OH− form) was examined using two different anion sources, acids or ammonium salts, and changing the polarity of the solvents. The AER (A− form) method in organic solvents was then applied to several quaternary heteroaromatic salts and ILs, and the anion exchange proceeded in excellent to quantitative yields, concomitantly removing halide impurities. Relying on the hydrophobicity of the targeted ion pair for the counteranion swap, organic solvents with variable polarity were used, such as CH3OH, CH3CN and the dipolar nonhydroxylic solvent mixture CH3CN:CH2Cl2 (3:7) and the anion exchange was equally successful with both lipophilic cations and anions.
Note: Reproducció del document publicat a: http://dx.doi.org/10.3390/molecules17044007
It is part of: Molecules, 2012, vol. 17, num. 4, p. 4007-4027
Related resource: http://dx.doi.org/10.3390/molecules17044007
URI: http://hdl.handle.net/2445/50799
ISSN: 1420-3049
Appears in Collections:Articles publicats en revistes (Farmacologia, Toxicologia i Química Terapèutica)

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