Preparation of a Highly Alkyl-Substituted Dicatechol Ligand and its Dinuclear Titanium(IV) Complex

Abstract

The highly alkyl-substituted dicatechol derivative 10-H₄ is prepared with a triphenyl phosphite activated amide bond formation and a trifluoroacetic acid promoted dioxolane cleavage as the crucial steps in the reaction sequence. Compound 10-H₄ forms an triple-stranded helicate-type titanium(IV) complex K₄[(10)₃Ti₂] with a polar central dinuclear complex unit and a nonpolar periphery.

amides - complexes - helical structures - ligands - supramolecular chemistry

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