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Chiral PEPPSI Complexes: Synthesis, Characterization, and Application in Asymmetric Suzuki–Miyaura Coupling Reactions

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posted on 2014-01-13, 00:00 authored by Laure Benhamou, Céline Besnard, E. Peter Kündig
PEPPSI complexes incorporating chiral N-heterocyclic carbene (NHC) ligands based on 2,2-dimethyl-1-(o-substituted aryl)­propan-1-amines were synthesized. Two complexes, with one saturated and one unsaturated NHC ligand, were structurally characterized. The chiral PEPPSI complexes were used in asymmetric Suzuki–Miyaura reactions, giving atropisomeric biaryl products in modest to good enantiomeric ratios.