Organic Chemistry

Easily-Prepared Hydroxy-Containing Receptors Recognise Anions in Aqueous Media

Authors

Abstract

Despite their readily availability, O–H groups have received relatively little attention as anion recognition motifs. Here, we report two simple hydroxy-containing anion receptors that are prepared in two facile steps followed by anion exchange, without the need for chromatographic purification at any stage. These receptors contain a pyridinium bis(amide) motif as well as hydroxyphenyl groups, and bind mono- and divalent anions in 9:1 CD3CN:D2O, showing a selectivity preference for sulfate. Notably, a “model” receptor that does not contain hydroxy groups shows only very weak sulfate binding in this competitive solvent mixture.

Content

Thumbnail image of Morshedi et al OH anion receptors.pdf

Supplementary material

Thumbnail image of Morshedi et al OH anion receptors Supp Info.pdf
Morshedi et al OH anion receptors Supp Info