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RESEARCH PRODUCT

Special Calixarenes by Directed Syntheses

Volker Böhmer

subject

chemistry.chemical_compoundchemistryMetal ions in aqueous solutionOrganic ChemistryCalixareneMoleculeGeneral ChemistryPhysical and Theoretical ChemistryMethyleneX ray analysisInherent chiralityCombinatorial chemistrySingle crystal

description

The synthesis of special calixarenes and calixarene-like macrocyclic compounds via stepwise procedures and fragment condensation is reviewed. Among the compounds available are exo- and endo-calixarenes consisting of different phenolic units, having bridges other than methylene or showing inherent chirality (Cn-symmetry). Macrobi- and -tricyclic molecules such as bridged calixarenes, double calixarenes, bicyclocalixarenes and annelated calixarenes are also described. Single crystal X-ray structures are reported for several compounds. Some properties like conformational barriers, pKa values or the ability to complex metal ions are discussed, showing the potential of these compounds which may (only) be produced by directed synthesis.

https://doi.org/10.1002/jlac.199719971004