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Chiral Tetraamines Based on (S)-2-(Aminomethyl)pyrrolidine: Template synthesis and properties of copper(II) complexes

✍ Scribed by Paul V. Bernhardt; Peter Comba; Trevor W. Hambley; Lisandra L. Martin; Katalin Várnagy; Luc Zipper

Publisher: John Wiley and Sons
Year: 1992
Tongue: German
Weight: 497 KB
Volume: 75
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19920750111

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✦ Synopsis

The template reaction of (bis[(S)-2-(am1noniethyl)pyrrolidine]}copper(II) with formaldehyde, nitroethane, and base in MeOH yields optically pure { 1,7-bis[(S)-pyrrolidin-2-yl]-4-methyl-4-nitro-2,6-diazaheptane}copper(I1) ([Cu((S,S)-mnppm)12+) in high yield. The same reaction with ruc-2-(aminomethyl)pyrrolidine is also dcscribed. Preparative details and spectroscopic and electrochemical properties of the Cu" complexes and of the free ligands are reported and compared with structural, spectroscopic, and electrochemical data of the Cu" complex of the unsubstituted parent ligand 1,7-bis[(S)-pyrrolidin-2-yl]-2,6-diamheptane (ppm). The crystal structure of [Cu(ppm)]CI 'Clod has been determined by X-ray diffraction methods.

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