C–C, C–O, and C–B Bond Formation by Pincer Complexes Including Asymmetric Catalysis

Catalytic Main‐Group Metal Complexes of Phosphine‐Based Pincer Ligands

“…This would become the first example of a large, and still growing, family of ligands widely known today as pincer ligands , a term coined by van Koten in 1989 [2,3] . Since Moulton and Shaw introduced their original PCP‐type ligand, [4] a vast array of pincer ligands have been developed, all showing the characteristic architecture depicted in Figure 1b [5,6] . Common donor atoms (D) include P, N, C, O and S, and the central donor is often part of an aromatic moiety, but pincer ligands are not limited to these exact structural components.…”

“…Moreover, the typically rigid framework of these ligands, coupled with their bischelating nature, often impart thermal stability to the resulting complexes. Combined together, these attributes – high tunability and stability – have made pincer complexes a highly attractive platform for the study of fundamental chemical processes, such as bond activation, [9] and established many of them as successful catalysts for a large variety of chemical transformations [5,10–16] …”

Sustainable catalysts for efficient triazole synthesis: an immobilized triazine-based copper-NNN pincer complex on TiO2

“…The unique properties of pincer complexes such as high thermal and mechanical stability, flexibility and high activity make them highly durable and efficient homogeneous catalysts in different types of reactions. 1–4 Triazine-based NNN pincer ligands, in contrast to their phosphine-based analogues, tend to be more tolerant to the presence of air and moisture, while coordinating favorably to most metals. 5–12 In particular, chemical transformations catalyzed by complexes with copper ions, an earth-abundant metal, have recently attracted much attention.…”

Design and Synthesis of a Palladium(II) Complex of a CNHCNN Pincer-Type N-Heterocyclic Carbene Ligand: Application towards the Oxidative Amidation of Aldehydes with 2-Aminopyridines

“…Pincer ligand coordinated transition-metal complexes are extensively used as a catalyst for various organic transformations due to their excellent thermal stability and unique chemical reactivities . The tridentate coordination pocket of the ligand offers tight coordination of metal with the ligand, which, in turn, induces stability and increases the electron density on metal precursors, making them better candidates for catalysis reactions .…”