Synthesis of a Chiral Alkyl-Bridged Bis(catecholamide) Ligand for the Self-Assembly of Enantiomerically Pure Helicates

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Abstract
The chiral bis(catechol) ligand 4 can be synthesized starting with 1,2-bis(2,3-dimethoxyphenyl)ethane (1) and S-1-phenylethyl isocyanate (2). An enantiomerically pure binuclear triple-stranded helicate 5 is formed in a spontaneous self-assembly process from ligand 4 and titanium(IV) ions in the presence of potassium carbonate.

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