期刊
ARKIVOC
卷 -, 期 -, 页码 98-117出版社
ARKAT USA INC
DOI: 10.3998/ark.5550190.0011.708
关键词
Lariat ether; solvent extraction; alkali metal cations; crown ether
资金
- Division of Chemical Sciences, Geosciences and Biosciences of the Office of Basic Energy Sciences of the U.S. Department of Energy [DE-FG02-90ER14416]
Three series of proton-ionizable sym-dibenzo-16-crown-5 ethers with sterically demanding 1-naphthyl, 2-naphthyl, and 9-phenanthryl geminal groups are synthesized and characterized. Variation of the proton-ionizable group includes oxyacetic acid and N-(X) sulfonyl oxyacetamide units with X = Me, Ph, C6H4-4-NO2, and CF3. For the latter series, variation of X provides 'tunable' acidity of the ligand. The metal ion-complexing properties of the proton-ionizable sym-(aryl)dibenzo-16-crown-5 compounds are probed by competitive solvent extraction of alkali metal cations from aqueous solutions into chloroform.
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