Ag+ Ion-selective lariat ethers: high pressure syntheses and cation recognition properties
Ag+ Ion-selective lariat ethers: high pressure syntheses and cation recognition properties
复制标题
银离子选择性套索醚：高压合成和阳离子识别特性
DOI：
10.1039/p19950002497
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
H. Tsukube
中科院分区：
文献类型：
--
作者：
K. Matsumoto,;M. Hashimoto;Mitsuo Toda;H. Tsukube
通过高压Snar反应，合成了一系列新的套索醚。在该反应中，各种杂环芳烃直接与氮杂冠醚中的氮原子相连。液膜传输研究表明，侧臂上含有噻唑、恶唑、吡嗪和哒嗪环的套索醚具有良好的Ag+离子选择性。~(13)C核磁共振结合实验表明，这些套索醚以不同于双臂冠醚的方式选择性地形成被包裹的Ag+络合物。杂芳族侧臂和氮杂冠环之间的协同作用提供了独特的阳离子识别。
A new series of lariat ethers have been prepared by a high pressure SNAr reaction, in which various heteroaromatics are directly connected to the nitrogens of 12-, 15- and 18-membered aza-crown ethers. Liquid membrane transport studies demonstrated that lariat ethers having thiazole, oxazole, pyrazine and pyridazine rings on their sidearms exhibited excellent Ag+ ion selectivity. 13C NMR binding experiments revealed that these lariat ethers selectively formed encapsulated Ag+ complexes in a different fashion from that of double armed crown ethers. Cooperative action between the heteroaromatic sidearm and the aza-crown ring afforded unique cation recognition.