Synthesis and physicochemical evaluation of phosphorus(III) and phosphorus(V) substituted benzoxaboroles.

Authors

Elisa Ospanow, Mirele Barsoum, David L Jakeman

Published in

Organic & biomolecular chemistry. Aug 29, 2025. Epub Aug 29, 2025.

Abstract

This study presents a one-pot synthesis of phosphorus(III) benzoxaboroles using hypophosphorous acid to yield H-phosphinates. These H-phosphinates, together with their phosphonate congeners, were systematically evaluated for their physicochemical properties, including pK_a, diol-binding affinity, and oxidative stability in buffer. The presence of the phosphorus atom as either phosphorus(III) or phosphorus(V) provided high aqueous water solubility. The results demonstrated that the nature of the phosphorus substituent significantly influenced the acidity and binding behavior of the benzoxaborole core. Notably, the phosphorus(III) derivatives exhibited strong diol binding and exceptional oxidative resistance. Overall, this work introduces new H-phosphinyl and phosphoryl substituents to tune organoboron properties for use as sensors, therapeutics, or chemical probes.

PMID:
40878628
Bibliographic data and abstract were imported from PubMed on 29 Aug 2025.

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