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Picking up the thread: The macrocycle bis‐p‐xylyl[26]crown‐6 is capable of forming pseudorotaxane‐like structures with single, nonconjugated urea or amide moieties when assisted by templating Na+ ions (see example). By using this approach, rotaxanes were synthesized with glycine residues or the repeating unit of nylon‐6,6 as key components in the threadlike units.
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