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Cesium-ion selective electrodes based on calix[4]arene dibenzocrown ethers

✍ Scribed by JongSeung Kim; Akira Ohki; Rina Ueki; Tomoko Ishizuka; Tomohiro Shimotashiro; Shigeru Maeda


Book ID
117224778
Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
111 KB
Volume
48
Category
Article
ISSN
0039-9140

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New Calix[4]arene Dibenzocrown Ethers fo
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Dialkoxycalix[4] arene dibenzocrown ethers (6-9) were successfully synthesized in the fixed 1,3-alternate conformation, with greater than 90% yields by reaction of the corresponding 1,3-dialkoxycalix[4]arenes 2-5 with dibenzodimesylate 13 in acetonitrile as a solvent in the presence of cesium carbo

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Two 1,3-alternate calix [4]arene-biscrowns with one proton-ionizable group and two dibenzocrown-6-ether units are synthesized. The compounds exhibit high Cs + extraction efficiency and selectivity. Cs + /Na + and Cs + /K + selectivities for the new N-(trifluoromethylsulfonyl)carbamoyl-substituted ca