Studies on Complexation of Alkaline Earth Metal Cations with Acyclic Polyether Dicarboxylic Acids
作者:Jong Seung Kim、Sang Chul Lee、Eun Tae Kim、Jae Hoon Cho、Moon Hwan Cho、Joung Hae Lee
DOI:10.1021/je980058h
日期:1998.11.1
Acyclic polyether dicarboxylicacids having butyl and tetradecyl side alkyl chains at the α-position of the carboxylic acid sidearm unit were prepared by the reaction of bisphenol and 2-bromoalkanoic acid in the presence of sodium hydride with quantitative yields. Complexation studies and solvent extraction on complexes of these ethers with alkalineearthmetal ions indicate that 1,2-bis((2-2‘-car
Novel Calix[4]arene Dibenzocrown Ethers Bearing Lipophilic Alkyl Groups Symmetrically Branched
作者:Jong Seung Kim、Jin Hyun Pang、Il Hwan Suh、Dae Whang Kim、Dong Won Kim
DOI:10.1080/00397919808005940
日期:1998.2
1,3-dialkyloxycalix[4]arene dibenzocrown ether in which two lipophilic butyl groups are symmetrically attached were successfully synthesized in the fixed 1,3-alternate conformation (12 and 13) of which structure was characterized by X-ray crystal structure.