Self-assembly of dynamic orthoester cryptates

René-Chris Brachvogel, Frank Hampel and Max von Delius ()
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René-Chris Brachvogel: Friedrich-Alexander-University Erlangen-Nürnberg (FAU)
Frank Hampel: Friedrich-Alexander-University Erlangen-Nürnberg (FAU)
Max von Delius: Friedrich-Alexander-University Erlangen-Nürnberg (FAU)

Nature Communications, 2015, vol. 6, issue 1, 1-7

Abstract: Abstract The discovery of coronands and cryptands, organic compounds that can accommodate metal ions in a preorganized two- or three-dimensional environment, was a milestone in supramolecular chemistry, leading to countless applications from organic synthesis to metallurgy and medicine. These compounds are typically prepared via multistep organic synthesis and one of their characteristic features is the high stability of their covalent framework. Here we report the use of a dynamic covalent exchange reaction for the one-pot template synthesis of a new class of coronates and cryptates, in which acid-labile O,O,O-orthoesters serve as bridgeheads. In contrast to their classic analogues, the compounds described herein are constitutionally dynamic in the presence of acid and can be induced to release their guest via irreversible deconstruction of the cage. These properties open up a wide range of application opportunities, from systems chemistry to molecular sensing and drug delivery.

Date: 2015
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DOI: 10.1038/ncomms8129

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