Synthesis, structure and characterization of picolyl and benzyl linked biphenyl nickel NHC complexes and their catalytic activity in Suzuki-Miyaura cross-coupling reactions

Picolyl and benzyl linked biphenyl nickel NHC complexes [(NiLBr2)-Br-1] (1), [NiL2]Br-2 (2) [NiL3]Br-2 (3) and [NiL3(N-3)(2)] (4) were synthesized and characterized by CHN, ESI-MS, H-1, C-13 NMR and single crystal XRD. All complexes adopted distorted square planar structure. They were employed as catalysts in Suzuki-Miyaura cross-coupling reaction to afford different biphenyls in good to moderate yields. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

Several picolyl and benzyl linked biphenyl nickel NHC complexes were synthesized and characterized, and then utilized as catalysts in Suzuki-Miyaura cross-coupling reaction to achieve moderate to good yields of various biphenyls.