We report the template-free dynamic covalent self-assembly of a small orthoformate cryptand, which appears to be driven by the formation of two sets of intramolecular, four-centre hydrogen bonds. In contrast to their nitrogen-bridgehead counterparts, orthoformate cryptands do not spontaneously invert, but require dynamic covalent exchange to do so.
H. Löw, E. Mena-Osteritz and M. von Delius, Chem. Commun., 2019, 55, 11434 DOI: 10.1039/C9CC05968G
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