Effect of structural variations within lipophilic dibenzocrown ether carboxylic acids on the selectivity and efficiency of competitive alkali-metal cation solvent extraction into chloroform
Huang, Xiaowu; Jang, Youngchan; Collier, James J., Journal of Heterocyclic Chemistry, 1996, vol. 33, # 2, p. 223 - 228
作者:Huang, Xiaowu、Jang, Youngchan、Collier, James J.、Hwang, Hong-Sik、Bartsch, Richard A.
DOI:——
日期:——
Synthesis of geminal-substituted, sterically congested, proton-ionizable dibenzo-14-crown-4, dibenzo-16-crown-5, dibenzo-19-crown-6 and dibenzo-22-crown-7 lariat ethers
作者:Dongmei Zhang、Xiaodong Liu、Sharon L. Williams、Chunkyung Park、Richard A. Bartsch
DOI:10.3998/ark.5550190.0011.704
日期:——
-16-crown-5, -19-crown-6 and -22-crown-7 lariatethers with different lipophilic geminal alkyl groups and different proton-ionizable groups are synthesized. For each lariatether platform, butyl, heptyl and decyl groups were incorporated as the geminal lipophilicgroups. Carboxylic acid, N-(trifluoromethane)sulfonylcarboxamide and sodium 3-propanesulfonate groups are incorporated on the platforms as proton-ionizable
Effect of structural variations within lipophilic dibenzocrown ether carboxylic acids on the selectivity and efficiency of competitive alkali-metal cation solvent extraction into chloroform
作者:Wladyslaw. Walkowiak、Witold A. Charewicz、Sang Ihn. Kang、Il Woo. Yang、Michael J. Pugia、Richard A. Bartsch