Author/Authors :
Pappalardo، نويسنده , , Andrea and Amato، نويسنده , , Maria E. and Ballistreri، نويسنده , , Francesco P. and Notti، نويسنده , , Anna and Tomaselli، نويسنده , , Gaetano A. and Toscano، نويسنده , , Rosa M. and Sfrazzetto، نويسنده , , Giuseppe Trusso، نويسنده ,
Abstract :
Chiral diastereomeric cavitand-salen macrocycles have been synthesized by the high-dilution condensation of 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 by two chiral diimino moieties, which differ in a convergent (C-shaped) or divergent (S-shaped) orientation of the two cavities.
