Published in
Elsevier, Tetrahedron Letters, 22(56), p. 2922-2926
DOI: 10.1016/j.tetlet.2015.04.092
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Enantiomeric recognition of α-amino acid derivatives by chiral uranyl-salen receptors
Journal article published in 2015 by
Giuseppe Forte,
Alessandro D’Urso,
Francesco P. Ballistreri,
Rosa M. Toscano 
,
Gaetano A. Tomaselli,
Giuseppe Trusso Sfrazzetto,
Giuseppe Trusso Sfrazzetto,
Andrea Pappalardo
,
Gaetano A. Tomaselli,
Giuseppe Trusso Sfrazzetto,
Giuseppe Trusso Sfrazzetto,
Andrea Pappalardo
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Abstract
Enantioselective molecular recognition of α-amino acid derivatives by two chiral uranyl-salen hosts was investigated by NMR data. The receptors differ for the presence of two tert-butyl groups in the salen backbone. The uranyl hosts have shown high binding constant values and excellent enantioselectivities for the selected guests (up to 100 for the tryptophan derivative).