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  • Title: Chiral shift reagent for amino acids based on resonance-assisted hydrogen bonding.
    Author: Chin J, Kim DC, Kim HJ, Panosyan FB, Kim KM.
    Journal: Org Lett; 2004 Jul 22; 6(15):2591-3. PubMed ID: 15255698.
    Abstract:
    [structure: see text] A chiral aldehyde that forms resonance-assisted hydrogen bonded imines with amino acids has been developed. This hydrogen bond not only increases the equilibrium constant for imine formation but also provides a highly downfield-shifted NMR singlet for evaluating enantiomeric excess and absolute stereochemistry of amino acids.
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