1. Aza-capped cyclodextrins for intra-cavity metal complexation.
- Author
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Sechet, D., Kaya, Z., Phan, T.-A., Jouffroy, M., Bentouhami, E., Armspach, D., Matt, D., and Toupet, L.
- Subjects
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AZA compounds , *CYCLODEXTRINS , *COMPLEXATION reactions - Abstract
Aza-capped, methylated cyclodextrins (CDs) were obtained in high yields by reacting the soft nitrogen nucleophile 2-nitrobenzenesulfonamide with either A,B-dimesylated CDs in basic media or their diol analogues under Mitsunobu reaction conditions followed by deprotection with thiophenol. A methyl pyridine substituent was grafted on the N atom of these secondary amines. When built on an α-CD scaffold, the resulting tertiary amine no longer undergoes nitrogen inversion at room temperature and behaves as a confining ligand, opening the way to intra-cavity metal complexation and promoting the formation of supramolecular helices. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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