Synthesis and uranyl(VI) extraction performance of a calix[4]pyrrole–tetrahydroxamic acid receptor

• Sara Karnib,
• Rana Baydoun,
• Wissam Zaidan,
• Nancy AlHaddad,
• Omar El Samad,
• Bilal Nsouli,
• Francine Cazier-Dennin and
• Pierre-Edouard Danjou

Beilstein J. Org. Chem. 2026, 22, 486–494, doi:10.3762/bjoc.22.36

• % yield. Its structure was confirmed by 1H NMR, 13C NMR, and HRMS. The uranium(VI) extraction efficiency of PCP HA was evaluated by solid–liquid extraction experiments, using uranyl acetate as the uranium source, with measurements performed by gamma spectroscopy. PCP HA demonstrated good performance

• supramolecular material for the removal of uranyl from aqueous media. Keywords: gamma spectroscopy; hydroxamic acid; phenoxycalix[4]pyrrole; solid–liquid extraction; uranyl(VI) extraction; Introduction Over the past few decades, supramolecular chemistry has advanced intensively establishing itself as a central

• . This time was estimated to be sufficient to reach equilibrium. The heterogeneous solution was centrifuged and the aqueous layer was filtered prior to gamma spectroscopy analysis. Uranium activity concentrations before and after extraction were determined, and extraction efficiencies were calculated