Selective binding and extraction of aqueous dihydrogen phosphate solutions via three-armed thiourea receptors

Evgeny V. Beletskiy, Steven R. Kass

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

A series of neutral anion receptors with one to three thiourea arms were synthesized and their binding to tetrabutylammonium chloride, acetate, and dihydrogen phosphate salts in aqueous DMSO mixtures was examined. The three-armed thiourea host was found to strongly and selectively bind H2PO4- even in DMSO solutions containing up to 30% water. This enabled the dihydrogen phosphate salt to be extracted from water into chloroform in its dibasic form despite the high heat of the hydration of HPO42-.

Original languageEnglish (US)
Pages (from-to)9844-9849
Number of pages6
JournalOrganic and Biomolecular Chemistry
Volume13
Issue number38
DOIs
StatePublished - Aug 10 2015

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