Palladium(II) complexes with R<inf>2</inf>edda-derived ligands. Part V. Reaction of O,O′-diethyl-(S,S)-ethylenediamine-N,N′-di-2-(3-methyl) butanoate with K<inf>2</inf>[PdCl<inf>4</inf>]

Abstract

The reaction of K2[PdCl4] with [(S,S)-H 2(Et)2eddv]Cl2 diester (O,O′-diethyl-(S, S)-ethylenediamine-N,N′-di-2-(3-methyl)butanoate) (1) resulted in [PdCl2{(S,S)-(Et)eddv-κ2 N,N′,κO}] (2) complex with one hydrolyzed ester group. The compound was characterized by spectroscopic methods and it was found that the reaction is diastereoselective (1H and 13C NMR; one diastereoisomer of four possible). In addition, the structure of 2 was confirmed by X-ray diffraction analysis, indicating that the product is the (R,R)-N,N′-configured isomer. DFT calculations support the formation of one diastereoisomer of 2. © 2011 Springer Science+Business Media B.V.