6533b86ffe1ef96bd12ce6e7
RESEARCH PRODUCT
Calix Crowns Derived from para-Bridged Calix[4]arenes
Gloe KSaadioui MBohmerStephan HPaulus Efsubject
chemistry.chemical_compoundChemistryOrganic ChemistryExtraction (chemistry)Organic chemistrychemistry.chemical_elementEtherPhysical and Theoretical ChemistryAlkali metalBiochemistryCarbondescription
Two calix[4]arenes, bridged by aliphatic chains of five and eight carbon atoms spanning two opposite para positions, have been converted into their 1,3-crown ether derivatives by reaction with tetraethylene and pentaethylene glycol ditosylates. Of the two possible 1,3-crown derivatives, only the formation of those isomers is observed in which the phenolic units connected at the para positions are etherified. This has been established in one case by a single-crystal X-ray analysis. Preliminary results for the extraction of selected alkali and alkaline-earth metals are reported.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-02-17 | Organic Letters |