Chiral diastereomeric cavitand-salen macrocycles have been synthesized by the high-dilution condensationof a tris-(quinoxaline-bridged)-diformyl-calix[4]resorcarene with (1R,2R)-diphenylethylenediamine.The reaction produced a couple of diastereoisomers, consisting of two cavitand cavities bis-bridged bytwo chiral diimino moieties, which differ in a convergent (C-shaped) or divergent (S-shaped) orientationof the two cavities.
Synthesis and topology of [2+2] calix[4]resorcarene-based chiral cavitand-salen macrocycles
PAPPALARDO, ANDREA;AMATO, Maria Emanuela;BALLISTRERI, Francesco Paolo;TOMASELLI, Gaetano;TOSCANO, Rosa Maria;TRUSSO SFRAZZETTO, GIUSEPPE
2012-01-01
Abstract
Chiral diastereomeric cavitand-salen macrocycles have been synthesized by the high-dilution condensationof a tris-(quinoxaline-bridged)-diformyl-calix[4]resorcarene with (1R,2R)-diphenylethylenediamine.The reaction produced a couple of diastereoisomers, consisting of two cavitand cavities bis-bridged bytwo chiral diimino moieties, which differ in a convergent (C-shaped) or divergent (S-shaped) orientationof the two cavities.File in questo prodotto:
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