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A new chiral cyclophane incorporating the 4,4 -bipyridinium dication and a dipeptide subunit forms complexes with amino acid derivatives and allows for the preparation of combinatorial libraries of hydrogen bonding, π-acidic chiral selectors.
A new chiral cyclophane, with a binding cavity defined by the 1,1 -binaphthyl minor groove and a strongly π-accepting 4,4 -bipyridinium dication, has been synthesized. It self-associates in solution (K = (4.1 ± 1.6) 10 2 M -1 ), and forms charge-transfer complexes with strong π-electron donors.
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