A lipophilic lariat ether with different intraannular and pendent acidic functions: synthesis and metal ion extraction
作者:Bronislaw P. Czech、Hwang Huh、Richard A. Bartsch
DOI:10.1021/jo00028a058
日期:1992.1
A novel resorcinol-based, 25-crown-8 compound with an intraannular oxyacetic acid group and a pendent, lipophilic phosphonic acid monoethyl ester function has been synthesized. Competitive solvent extractions of alkali-metal, alkaline-earth, and mixed alkali-metal and alkaline-earth cations from aqueous solutions into chloroform by this lipophilic lariat ether with two different proton-ionizable groups were investigated. The lipophilic diionizable lariat ether exhibits markedly different efficiencies in the extraction of alkali-metal cations and of alkaline-earth cations from basic aqueous solutions.