Abstract

N-Heterocyclic carbene ligands derived from <i>C</i> <sub>2</sub>-symmetric diamine with naphthyl side chains are introduced as chiral monodentate ligands, and their palladium complexes (NHC)Pd(cin)Cl are prepared. These compounds exist as a mixture of diastereomers, and the palladium complexes can be successfully separated. When used in the asymmetric Suzuki–Miyaura and ­Kumada coupling, chiral biaryls can be obtained in high yield and moderate selectivity.

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