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Chia-Fong Chang, Chun-Ju Chuang, Prof. Chien-Chen Lai, Yi-Hung Liu, Prof. Shie-Ming Peng and Prof. Sheng-Hsien Chiu Using Host–Guest Complexation to Fold a Flexible Linear Organic String: Kinetically Controlled Syntheses of [3]Catenanes and a Five-Membered Molecular Necklace Angewandte Chemie International Edition 51

Version of Record online: 11 SEP 2012 | DOI: 10.1002/anie.201205498

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Rings and necklaces: Three [3]catenanes and a five-membered molecular necklace ([5]MN), with up to 60- and 92-membered rings as their centerpieces, respectively, have been synthesized. The synthesis started from the corresponding complexes in which the threaded flexible linear guests were bent at approximately right angles to facilitate kinetically controlled macrocyclizations.

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