A BARIUM SELECTIVE MACROCYCLIC TETRALACTAM WITH DIMETHYLENEOXY MOIETIES

DOI: 10.1016/S0040-4039(00)99467-X

Source and publish data:

Tetrahedron Letters p. 1369 - 1372 (1989)

Update date:2022-08-04

Topics:

Authors:

Cazaux, Louis

Duriez, Marie-Christine

Picard, Claude

Tisnes, Pierre

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Article abstract of DOI:10.1016/S0040-4039(00)99467-X

Two new 18-membered tetralactams with two dimethyleneoxy moieties are synthesized by direct macrocyclization or steps reaction.In the latter case symmetrical or unsymmetrical compounds can be obtained.The unsymmetrical tetralactam shows a very high selectivity for barium vs.Na⁺ and Zn²⁺ and to a lesser extent vs.K⁺, Mg²⁺ and Ca²⁺ in the extraction procedure with picrates.In addition, the stability constants are determined for the two 1:1 tetralactam:Ba²⁺ complexes by UV spectrophotometry in THF solution.

Full text of DOI:10.1016/S0040-4039(00)99467-X

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