H. Tsukube et al., ENANTIOSELECTIVE BINDING AND EXTRACTION OF ZWITTERIONIC AMINO-ACIDS BY CHIRAL LANTHANIDE COMPLEXES, Chemical communications, (4), 1996, pp. 477-478
Lanthanide complexes with chiral camphor-derived beta-diketonate ligan
ds extract zwitterionic amino acids from neutral aqueous solutions int
o CH2Cl2-media with high efficiency and in good enantioselectivity.