Facile syntheses of [3]-, [4]- and [6]catenanes templated by orthogonal supramolecular interactions. Issue 4 (22nd January 2016)

• Record Type: Journal Article
• Authors: Wang, Kai; Yee, Chi-Chung; Au-Yeung, Ho Yu
• Is Part Of: Chemical science. Volume 7:Issue 4(2016:Apr.)
• Page Start: 2787
• Page End: 2792
• Publication Date: 2016-01-22
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5sc04774a
• Languages: English
• ISSNs: 2041-6520

Abstract

Abstract : A branched [6]catenane was synthesised under aqueous conditions in high yield using orthogonal supramolecular interactions as a template. Abstract : A water soluble [6]catenane consisting of two interlocking [3]catenanes was synthesised in 91% yield using readily accessible precursors. The new strategy features the simultaneous use of orthogonal Cu + –phenanthroline and CB[6]–ammonium interactions for preorganising the precursors and the efficient CB[6]-catalysed azide–alkyne cycloaddition as bond forming reactions for ring closing, resulting in high structural complexity and fidelity of the products without compromising interlocking efficiency. A related [4]catenane with three different types of macrocycles was also obtained in good yield.