Journal of Organic Chemistry p. 420 - 425 (1990)
Update date:2022-08-04
Topics:
Tarrago, Georges
Marzin, Claude
Najimi, Ouafa
Pellegrin, Valdo
Ten new tetraheterocyclic macrocyclic ligands 2-4 in the porphyrinogen series were prepared.Their structures differ from 1 in (1) the type of junction between heterocycles (NCH2C or CCH2C), (2) the donor nature of the complexation sites, (3) the five- or six-membered geometry of the included heterocycles, and (4) their symmetry.The capabilities of 2-4 for extraction and transport of alkali metal and NH4+ cations were less than those of 1.The rigid dipyrazole ditriazole macrocycles 3 extract Na+ selectively, whereas the more flexible dipyrazole monotriazole monopyridine macrocycles 2 have the best transport selectivity for Na+.
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