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C2-symmetric Bis-hydrazones As Ligands In The Asymmetric Suzuki-Miyaura Cross-coupling.

A. Bermejo, A. Ros, Rosario Fernández, J. M. Lassaletta
Published 2008 · Medicine, Chemistry

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Glyoxal bis-hydrazone derived from (S,S)-1-amino-2,5-diphenylpyrrolidine behaves as an excellent ligand for phosphine-free, asymmetric Suzuki-Miyaura cross couplings, thereby affording a variety of enantiomerically enriched biaryls with different substitution patterns. The high catalytic activity of the [PdCl2(bis-hydrazone)] complex allows reactions to be performed at room temperature, affording products with excellent enantioselectivities in all cases.



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