The possibility of the kinetic resohaion of the racemic C-chiral ligand in the course of its orthopalladation in the presence of an optically active base was shown Jbr the first time using a tertiary heterocyclic amine as the ligand. The absolute configuration of the C'-stereocenter in the predominant enantiomer of the dimeric complex was established by the X-ray diffraction of (S)-prolinate derivative.Asymmetric activation of C-H bonds seems a highly promising method for the synthesis of optically active metallacycles. However, this approach has remained little studied up to the present, and is only utilized for systems with planar chirality. After the pioneering investigations of Sokolov and coworkers on the asymmetric cyclopalladation of ot-ferrocenylalkylamines [ I-3] and their ruthenocenyl analogs [4] in the presence of optically active bases (as the external inductor of chirality), a series of publications on the diastereoselective cyclopalladation of optically active ferrocenylimines [5][6][7] and ferrocenylhydrazones [8,9], containing the C -stereocenter in the N-substituent as the internal inductor of chirality, appeared only recently.The present work presents preliminary results of investigation into the asymmetric cyclopalladation of racemic N-methyl-2-phenylpyrrolidine (I) in the presence of optically active bases, as well as the determination of the absolute configuration of the enantiomer formed preferentially on account of kinetic resolution using the method of X-ray diffraction analysis. It should be noted that only one case of kinetic resolution in the course of cyclopalladation of a racemic ligand has been described until now, using the example of the system containing elements of planar and central chirality simultaneously [2].We previously published [10] the synthesis of the racemic dimeric ortho-palladated complex di-~t-chlorobis[2-(l-methylpyrrolidin-2-yl)phenyl-C,N]dipailadium(II) (1I) and its optical resolution using (S)-prolinate as the auxiliary chiral ligand.
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