Stereoselectivity in Reactions of Metal Complexes. Part XI. 2,6‐Bis(pyrrolidin‐2‐yl)pyridine: Synthesis and resolution of the meso and the optically active isomers. Complex formation with copper(II) ion in aqueous solution

Abstract

AbstractThe new linear triamine 2,6‐bis(pyrrolidin‐2‐yl)pyridine (II) has been synthesized, and the (R, S)‐, (R, R)‐, and (S, S)‐isomers have been separated. Compared to other triamines showing a similar structure, these new ligands form very stable Cu2+ complexes. No significant difference is observed between the meso and the racemic forms for their binary or ternary mixed‐ligand complexes with the amino acids alanine and proline.