Samarium(III)-propylenediaminetetraacetate complex: A water-soluble chiral shift reagent for use in high-field NMR |
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| Authors: | Inamoto Ogasawara Omata Kabuto Sasaki |
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| Affiliation: | Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan, and Division of Chemistry, Graduate School of Science, Hokkaido University, Kita-ku, Sapporo 060-8010, Japan. |
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| Abstract: | Samarium(III)-(R)- or (S)-propylenediaminetetraacetate complex resolved the enantiomer signals of alpha-amino acids on high-field (1)H and (13)C NMR with remarkably less line broadening than was previously reported for the Eu(III) complex of the same ligand. A widely observed regularity between the absolute configuration of enantiomers and the relative shift of their NMR signals is useful for the assignment of absolute configuration. |
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