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Chiral cryptates derived from a hexaazamacrocycle.
Autorzy
Rok wydania
2018
Czasopismo
Numer woluminu
83
Strony
6748-6753
DOI
10.1021/acs.joc.8b00670
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The reactions of hexaazamacrocycle 1 with 2,6-bis(bromomethyl)pyridine or 2,6-bis[(tosyloxy)methyl)]pyridine in the presence of appropriate carbonates result in the formation of derivatives of cryptand 6: enantiopure azacryptates of sodium and potassium. Crystal structures of these compounds indicate interaction of a metal ion with four pyridine nitrogen atoms and four tertiary amine atoms. The competition reactions monitored by NMR spectroscopy indicate preferential binding of Na+ over K+ as well as higher affinity of 6 for Na+ in comparison with the [2.2.1] cryptand.
Adres publiczny
https://doi.org/10.1021/acs.joc.8b00670
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