Dibenzopyridino-18-couronnes-6 polyfonctionnelles: Synthèse extraction des cations alcalins et étude d’acidité
Written by sctunisie no commentsThis research is a contribution to the synthesis of functionalized dibenzo-pyridino-18-crown-6 (DB-P-18-C-6). The functions bromo and nitro were fixed on the aromatic rings. New di and tri substituted derivatives of DB-P-l8-C-6 were synthesized. The substituted crowns were characterized by 1H-NMR, IR, U.V, MS and elemental analysis. Likewise, we have tested these crowns for their complexing properties for alkali cations by the determination of extraction equilibrium constants (Ke) and the complexation constants (Kc). The determination of pKa for these compounds was realized by different methods and in different solvent systems.
A. Ben Hadj Amor, F. Meganem
Dibenzo-pyridino-18-crown-6, Synthesis, Fictionalisation, Extraction, Acidity
Pages 1551-1563
