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Amino acid recognition of pyridine bis(oxazoline)–copper(II) complex in aqueous solvent

✍ Scribed by Hae-Jo Kim; Riaz Asif; Doo Soo Chung; Jong-In Hong

Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
273 KB
Volume
44
Category
Article
ISSN
0040-4039

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✦ Synopsis

Enantioselective recognition of amino acids has been studied with C 2 -symmetric chiral pyridine bis(oxazoline)-copper(II) complexes at physiological pH condition. UV-visible titration revealed strong binding of submillimolar dissociation constant between pyridine bis(oxazoline)-copper(II) complex and amino acids in aqueous solution. Moderate selectivity of up to 2:1 between D-and L-amino acids was achieved. The enantiomers were baseline resolved by capillary electrophoresis, using the bis(L-lysine)-copper(II) complex as a chiral selector.

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Stereoselective Formation of Ternary Copper(II) Complexes of (S)-amino-acid amides and (R)- or (S)-amino acids in aqueous solution
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