Light‐Induced Cyclization of A [c2]Daisy‐Chain Rotaxane to Form a Shrinkable Double‐Lasso Macrocycle,Asian Journal of Organic Chemistry

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Light‐Induced Cyclization of A [c2]Daisy‐Chain Rotaxane to Form a Shrinkable Double‐Lasso Macrocycle
Asian Journal of Organic Chemistry ( IF 2.8 ) Pub Date : 2018-04-06 , DOI: 10.1002/ajoc.201800114
Si‐Jia Rao ₁ , Xu‐Hao Ye ₁ , Qi Zhang ₁ , Chuan Gao ₁ , Wen‐Zhi Wang ₁ , Da‐Hui Qu ₁

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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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