Abstract
Reactions between a tripodal trithiaether-triamine and the monomethoxycarbonylmethyl ether of p-tert-butylcalix[4]arene led to the ready isolation of both di- and triamides, namely di- and tricalixaryl derivatives of the tripod. These molecules, designed as dendrimer precursors, retain a core capable of acting as a multidentate ligand for metal ions. Studies of complex formation with Zn(II) and Co(III) by these new ligands show that indeed there is preferential binding to the core (rather than to the phenolic sites of the calixarene units), suggesting new mechanisms for the control of the structure and stereochemistry of dendrimer species.
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