Applications of quinoxaline-bridged bis(benzimidazolium) salts as ligand sources for the palladium-catalyzed Suzuki and Heck cross-coupling reactions in an aqueous medium

被引：2

作者：

Dusunceli, Serpil Demir ^{[1
,2
,3
]}

Sahan, Mehmet Hanifi ^{[1
]}

Kaloglu, Murat ^{[1
,2
,3
]}

Ustun, Elvan ^{[4
]}

Ozdemir, Ismail ^{[1
,2
,3
]}

机构：

[1] Inonu Univ, Fac Sci & Arts, Dept Chem, TR-44280 Malatya, Turkey

[2] Inonu Univ, Catalysis Res & Applicat Ctr, Malatya, Turkey

[3] Inonu Univ, Drug Applicat & Res Ctr, Malatya, Turkey

[4] Ordu Univ, Fac Sci & Art, Dept Chem, Ordu, Turkey

来源：

JOURNAL OF THE CHINESE CHEMICAL SOCIETY | 2022年 / 69卷 / 11期

关键词：

bis(benzimidazolium) salt; Heck coupling; N-heterocyclic carbene; palladium; quinoxaline; Suzuki coupling; N-HETEROCYCLIC CARBENE; PALLADIUM/IMIDAZOLIUM SALT; ARYL BROMIDES; PRECURSORS SYNTHESIS; COMPLEXES SYNTHESIS; OLEFIN METATHESIS; KINETIC STABILITY; PHOSPHINE-LIGANDS; BOND FORMATION; BASIS-SETS;

D O I：

10.1002/jccs.202200304

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In the present work, quinoxaline-bridged bis(benzimidazolium) salts were prepared by the reaction of 2,3-bis(bromomethyl) quinoxaline and 1-substituted benzimidazole. The structures of the bis(benzimidazolium) salts were characterized by NMR, FT-IR, and elemental analysis techniques. Also, the photophysical properties of salts were investigated by UV-Vis absorption and fluorescence emission spectroscopy. Next, these quinoxaline bridged bis(benzimidazolium) salts were used as bidentate benzimidazol-2-ylidene ligand precursors in the palladium-catalyzed Suzuki-Miyaura and Mizoroki-Heck cross-couplings. These salts exhibited moderate-to-high activity in the palladium-catalyzed cross-coupling reactions.

引用

页码：1937 / 1953

页数：17

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