Low temperature capture of pseudorotaxanes |
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Authors: | Hassan Nurul Izzaty del Amo Vicente Calder Ewen Philp Douglas |
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Institution: | EaStCHEM and Centre for Biomolecular Sciences, School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9ST, United Kingdom. |
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Abstract: | Yields of a rotaxane can be improved by employing a two-step capture protocol. Cooling a solution of the linear and macrocyclic components required for the rotaxane increases the population of the target pseudorotaxane, which is then captured by a rapid capping reaction between an azide and PPh(3). The resulting iminophosphorane rotaxane can then be manipulated synthetically at elevated temperatures. |
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