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|Title:||Variable ion selectivity in [n.3.3](1,3,5)crownophanes: The "breathing" process|
|Citation:||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|
|Appears in Collections:||Staff Publications|
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