6533b86efe1ef96bd12cbc54

RESEARCH PRODUCT

Dendritic octa-CMPO derivatives of calix[4]arenes

Pingshan WangJean-françois DozolValéry HostMohamed SaadiouiVolker BöhmerChristian SchmidtJean F. Desreux

subject

Aqueous solutionLigandOrganic ChemistryInorganic chemistryEtherBiochemistryMetalchemistry.chemical_compoundchemistryNitric acidDendrimervisual_artDrug DiscoveryPolymer chemistryProton NMRvisual_art.visual_art_mediumTitration

description

Abstract Calix[4]arenes substituted at the narrow or wide rim by eight carbamoylmethyl-phosphine oxide (CMPO) functions in a dendritic manner were synthesised and studied in extraction of Eu 3+ and Am 3+ from aqueous nitric acid into o -nitrophenylhexyl ether. 1 H NMR relaxivity titrations for a wide rim octa-CMPO reveal the clear formation of a solvent-free 1:2 ligand/metal complex, while the wide rim tetra-CMPO formed oligomeric complexes under similar conditions.

https://doi.org/10.1016/j.tet.2004.01.057