Homo‐ and Heterobimetallic Complexes Bearing NHC Ligands: Applications in α‐Arylation of Amide, Suzuki–Miyaura Coupling Reactions, and Tandem Catalysis

Abstract

A heterobimetallic Ir III /Pd II complex from a dicarbene donor ligand featuring cyclometalated Ir III and PEPPSI type Pd II is presented along with a homodinuclear PEPPSI type Pd II complex starting from the same bis‐imidazolium salt. All the Pd II complexes are active precatalyst in both α‐arylation and Suzuki–Miyaura coupling reactions. The heterobimetallic Ir III /Pd II complex shows much higher yields in tandem C–C coupling/transfer hydrogenation reactions compared to the equimolar mixture of their mononuclear Pd II and Ir III counterparts.