Chromatographic Optical Resolution Based on the Chiral Discrimination between Ions of the Same Sign, Anionic Cobalt(III) Complex Racemates and Anionic Selector (Sb2(d-tart)2)2-.

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概要

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• Column chromatographic optical resolutions of twenty-six typical univalent anionic cobalt(III) complexes, e.g., [Co(edta)]<SUP>−</SUP> and <I>fac</I>-[Co(NO<SUB>2</SUB>)<SUB>3</SUB>(edma)]<SUP>−</SUP>, were carried out, using as a chiral eluent an aqueous solution of [Sb<SUB>2</SUB>(<I>d</I>-tart)<SUB>2</SUB>]<SUP>2−</SUP> on a strongly basic anion exchanger, where edta=ethylenediamine-<I>N</I>,<I>N</I>,<I>N</I>′,<I>N</I>′-tetraacetate(4-), edma=ethylenediamine-<I>N</I>-acetate(1-), and <I>d</I>-tart=<I>d</I>-tartrate(4-). The racemates were resolved with separation factors comparable to those obtained in conventional resolutions by use of cationic selectors. From a comparison of elution orders of enantiomers and separation factors obtained for the racemates, a chiral discrimination mechanism without direct contact between the racemate and selector was proposed.

• 公益社団法人 日本化学会の論文

著者

• Koine Norio

  Department Of Applied Chemistry Faculty Of Engineering Ehime University

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