Light-Induced Cyclization of A [c2]Daisy-Chain Rotaxane to Form a Shrinkable Double-Lasso Macrocycle
ASIAN JOURNAL OF ORGANIC CHEMISTRY(2018)
Abstract
A pH-responsive double-lasso macrocycle has been successfully obtained directly from a [c2] daisy chain rotaxane via a photodimerization reaction of two terminal coumarin ligands. The size of the double-lasso macrocycle could be tuned by acid/base stimuli with the reversible muscle-like extension/contraction of the [c2] daisy chain unit.
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Key words
cyclization,daisy chain,macrocycles,photodimerization,rotaxanes
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