Palladium(II) pyrazolyl-pyridyl complexes containing a sterically hindered N-heterocyclic carbene moiety for the Suzuki-Miyaura cross-coupling reaction

被引：25

作者：

Luconi, Lapo ^{[1
]}

Gafurov, Zufar ^{[2
]}

Rossin, Andrea ^{[1
]}

Tuci, Giulia ^{[1
]}

Sinyashin, Oleg ^{[2
]}

Yakhvarov, Dmitry ^{[2
,3
]}

Giambastiani, Giuliano ^{[1
,3
]}

机构：

[1] CNR, ICCOM, Inst Chem OrganoMetall Cpds, Via Madonna del Piano 10, I-50019 Florence, Italy

[2] Russian Acad Sci, AE Arbuzov Inst Organ & Phys Chem, Arbuzov Str 8, Kazan 420088, Russia

[3] Kazan Fed Univ, Kazan 420008, Russia

来源：

INORGANICA CHIMICA ACTA | 2018年 / 470卷

关键词：

NHC-containing ligand; Palladium complexes; Suzuki-Miyaura coupling; ORTHO-SUBSTITUTED BIARYLS; OXIDATIVE ADDITION; CATALYTIC-ACTIVITY; LIGANDS; POLYMERIZATION;

D O I：

10.1016/j.ica.2017.03.026

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Cationic palladium complexes stabilized by a tridentate neutral {N, N, C} ligand containing a sterically hindered N-heterocyclic carbene (NHC) moiety have been prepared and characterized. The nature of the anionic counterion in the palladium complex has been varied to get crystals suitable for X-ray diffraction. The square planar structure of one of these complexes along with the axial contribution of the sterically hindered NHC fragment has been confirmed by X-ray analysis. In addition, all the isolated [{kappa(3)-N, N, C} (PdCl)-Cl-II]X-+(-) [X- = Cl, PF6, BF4, B(C6H3Cl2)(4)] ion pairs have been scrutinized as catalysts in the cross-coupling Suzuki-Miyaura reaction between phenylboronic acid and variably substituted halo-aryl acceptors. Selected issues from this series have shown improved catalyst turn-over frequencies (TOFs) with respect to structurally related catalytic systems of the state-of-the-art. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：100 / 105

页数：6

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