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Issue 15, 2017
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Helianthus-like cucurbit[4]uril and cucurbit[5]uril analogues

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Abstract

A new glycoluril-like molecule, cyclopentanopropanediurea (CyP-TD), was prepared by malonic ester synthesis. Its condensation with paraformaldehyde resulted in two Helianthus-like cucurbituril analogues, CyP4TD[4] and CyP5TD[5], with cyclopentano groups evenly distributed on the equators. The structures of the two macrocycles were confirmed by 1H-NMR, HRMS-ES and single-crystal X-ray diffraction. CyP4TD[4] and CyP5TD[5] both exhibit excellent thermal stability, and CyP5TD[5] has better solubility in water and organic solvents, while CyP4TD[4] can hardly dissolve in them.

Graphical abstract: Helianthus-like cucurbit[4]uril and cucurbit[5]uril analogues

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Publication details

The article was received on 10 May 2017, accepted on 21 Jun 2017 and first published on 22 Jun 2017


Article type: Letter
DOI: 10.1039/C7NJ01595J
Citation: New J. Chem., 2017,41, 6991-6994
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    Helianthus-like cucurbit[4]uril and cucurbit[5]uril analogues

    Y. Wu, L. Xu, Y. Shen, Y. Wang and Q. Wang, New J. Chem., 2017, 41, 6991
    DOI: 10.1039/C7NJ01595J

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