Second generation of calix[6]aza-Cryptands: synthesis of heteroditopic receptors for organic ion pairs.
Identifieur interne : 000A23 ( France/Analysis ); précédent : 000A22; suivant : 000A24Second generation of calix[6]aza-Cryptands: synthesis of heteroditopic receptors for organic ion pairs.
Auteurs : Stéphane Le Gac [France] ; Mickaël Ménand ; Ivan JabinSource :
- Organic letters [ 1523-7052 ] ; 2008.
English descriptors
- KwdEn :
- MESH :
- chemical , chemical synthesis : Calixarenes, Ethers, Cyclic.
- chemical , chemistry : Methenamine.
- Magnetic Resonance Spectroscopy.
Abstract
The efficient syntheses of calix[6]azacryptands decorated with anion-binding groups on the narrow rim have been achieved from an 1,3,5-tris-protected calix[6]hexa-amine. These heteroditopic receptors can bind ammonium ions or organic ion pair salts with a positive cooperativity. In regard to their functionalization at the 1,3,5-phenolic positions, these compounds constitute the first examples of a second generation of C3 v symmetrical calix[6]azacryptands.
DOI: 10.1021/ol8021726
PubMed: 18939804
Affiliations:
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pubmed:18939804Le document en format XML
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<front><div type="abstract" xml:lang="en">The efficient syntheses of calix[6]azacryptands decorated with anion-binding groups on the narrow rim have been achieved from an 1,3,5-tris-protected calix[6]hexa-amine. These heteroditopic receptors can bind ammonium ions or organic ion pair salts with a positive cooperativity. In regard to their functionalization at the 1,3,5-phenolic positions, these compounds constitute the first examples of a second generation of C3 v symmetrical calix[6]azacryptands.</div>
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