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P,N Ligand in Ni-Catalyzed Cross-Coupling Reactions: A Promising Tool for π-Functionalization

Journal

ACS CATALYSIS
Volume 13, Issue 20, Pages 13540-13560

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acscatal.3c03851

Keywords

nickel; P,N ligands; cross-coupling; alkene; alkyne; pi-functionalization

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Bidentate P,N ligands, integrating phosphine and nitrogen donors, have versatile characteristics and offer electronic and steric tunability. This Review focuses on Ni-catalyzed cross-coupling reactions mediated by P,N ligands, with their asymmetrical nature playing a crucial role in the catalytic cycle and providing control, stability, and unique regioselectivity in catalytic processes.
Bidentate P,N ligands, integrating phosphine and nitrogen donors, are highlighted for their versatile characteristics, offering both electronic and steric tunability. Their hemilabile nature, coupled with the ability to modulate both electronic and steric properties through the choice of donor atoms and substituents, has expanded the horizons of chemical transformations. This Review focuses on Ni-catalyzed cross-coupling reactions mediated by P,N ligands. The asymmetrical nature of P,N ligands, with each donor atom playing a specific role in the catalytic cycle, offers control, stability, and unique regioselectivity in catalytic processes. In particular, the Ni/P,N-catalytic system exhibits remarkable reactivity with pi-substrates including alkenes, alkynes, and allenes. A thorough mechanistic understanding of these processes offers insights into the trends and future directions in Ni/P,N-catalyzed cross-coupling reactions.

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