Journal of the American Chemical Society p. 7729 - 7734 (1984)
Update date:2022-08-05
Topics:
Gelber, Loren R.
Karger, Barry L.
Neumeyer, John L.
Feibush, Binyamin
A new method for enantiomeric resolution of primary amino alcohols by HPLC is described involving derivatization to the salicylaldehyde Schiff base followed by ligand exchange chromatography (LEC) with chiral L-proline-bonded stationary phases.All of the α-amino alcohols with a hydroxyl substituent on the asymmetric carbon examined were resolved, including catecholamines and other β-hydroxyphenethylamines.The copper(II) ion employed in LEC serves to stabilize the Schiff base, whereas the derivative permits complexation in a manner favorable for resolution and enhanced detection.A possible structure for the mixed complex responsible for separation is suggested.From this structure, a correlation between elution order and configuration is proposed.
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