Tetrahedron

The preparation and properties of neutral diamide ionophores for group IIa metal cations

IJ Borowitz, WO Lin, TC Wun, R Bittman, L Weiss…

文献索引：Borowitz,I.J. et al. Tetrahedron, 1977 , vol. 33, p. 1697 - 1705

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被引用次数: 21

摘要

The preparation of a series of neutral ligands featuring ether and N-methyl-N- carbethoxypentylamide groups is described. These ligands as well as related ones bearing other diamide groups are shown to selectively chelate Group IIA cations by picrate extraction from water to methylene chloride. The changes in UV absorption of aromatic rings and amide groups in the ligands upon titration with metal salts in methanol allow the ...