Abstract
Abstract Ten new crown ethers incorporating a ferrocene unit at 1,2- or 1,3-positions are reported. These crown ethers were synthesized by the reaction of 1,2- or 1,3-bis(hydroxymethyl)ferrocene with oligoethylene glycol ditosylate (n=1–5) with potassium t-butoxide by a high-dilution method. These new types of ferrocene crown ethers were examined for complexation behavior with alkali, alkaline earth, and transition-metal cations by solvent extraction. It was found to extract thallium ions most effectively.
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