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Dr. Chenfeng Ke, Dr. Ronald A. Smaldone, Dr. Takashi Kikuchi, Hao Li, Prof. Anthony P. Davis and Prof. J. Fraser Stoddart Quantitative Emergence of Hetero[4]rotaxanes by Template-Directed Click Chemistry Angewandte Chemie International Edition 52

Article first published online: 13 SEP 2012 | DOI: 10.1002/anie.201205087

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In one fell swoop, polyrotaxanes comprising up to 64 rings can be synthesized as a result of cucurbit[6]uril-templated 1,3-dipolar azide-alkyne cycloadditions accelerated in the presence of cyclodextrins as a consequence of self-sorting and positive cooperativity, brought about by hydrogen bonding. Mixing six components (see picture) in one pot affords a hetero[4]rotaxane in one minute in quantitative yield.

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