Synthesis and resolution of an alpha-phenyl substituted ortho-palladated matrixстатья
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Аннотация:A novel ortho-palladated benzylaminate matrix bearing phenyl substituent at the alpha-carbon stereocenter was prepared in the racemic state by direct intramolecular palladation of tertiary diphenylmethylamine with palladium(II) acetate; its structure and palladacycle conformation were determined by H-1 NMR studies of the mononuclear triphenylphosphine adduct. The resolution of the dimeric complex was performed via recrystallization of its diastereomeric (S)-prolinate derivatives. The absolute configuration (R-C,R-C) of the enantiopure dimer thus obtained was determined by an X-ray diffraction investigation of the less soluble (R-C,SCSN)-diastereomer of its (S)-prolinate adduct. (C) 1999 Elsevier Science Ltd. All rights reserved.