0000000000858193

AUTHOR

Bohmer

showing 2 related works from this author

Guest-Enhanced Kinetic Stability of Hydrogen-Bonded Dimeric Capsules of Tetraurea Calix[4]arenes

2000

Inclusion complexes of self-assembled molecular dimers composed of two tetratolylurea calix[4]arenes show strongly different kinetic stability for different guests. In cyclohexane-d12, half-life ti...

HydrogenchemistryComputational chemistryOrganic ChemistryOrganic chemistrychemistry.chemical_elementPhysical and Theoretical ChemistryInclusion (mineral)Kinetic energyBiochemistryOrganic Letters
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Calix Crowns Derived from para-Bridged Calix[4]arenes

2000

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.

chemistry.chemical_compoundChemistryOrganic ChemistryExtraction (chemistry)Organic chemistrychemistry.chemical_elementEtherPhysical and Theoretical ChemistryAlkali metalBiochemistryCarbonOrganic Letters
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