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https://doi.org/10.1021/ol034424k
Title: | Variable ion selectivity in [n.3.3](1,3,5)crownophanes: The "breathing" process |
Authors: | Xu, J. Lai, Y.-H. Wang, W. |
Issue Date: | 7-Aug-2003 |
Source: | Xu, J., Lai, Y.-H., Wang, W. (2003-08-07). Variable ion selectivity in [n.3.3](1,3,5)crownophanes: The "breathing" process. Organic Letters 5 (16) : 2781-2784. ScholarBank@NUS Repository. https://doi.org/10.1021/ol034424k |
Abstract: | (Matrix presented) A series of dithia[n.3.3](1.3.5)crownophanes were synthesized by cesium carbonate-assisted intramolecular cyclization reactions in 10-31% yields. Their complexation behavior exhibits an unusual ion-selectivity preference due to the presence of a "breathing" process of the dithia[3.3]metacyclophane moiety, which indirectly controls the ion selectivity through the adjustment of the cavity size of the crown unit. This breathing mechanism is also supported by observation made in X-ray crystallographic analysis. |
Source Title: | Organic Letters |
URI: | http://scholarbank.nus.edu.sg/handle/10635/77347 |
ISSN: | 15237060 |
DOI: | 10.1021/ol034424k |
Appears in Collections: | Staff Publications |
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