Palladium(II) complexes bearing 2-(1H-imidazol/oxazol-2-yl)-pyridines: Synthesis, structures and ligand effects in Suzukie-Miyaura cross-coupling

doi:10.1016/j.jorganchem.2013.12.041

CORC > 化学研究所 > 中国科学院化学研究所

	Palladium(II) complexes bearing 2-(1H-imidazol/oxazol-2-yl)-pyridines: Synthesis, structures and ligand effects in Suzukie-Miyaura cross-coupling
	Eseola, Abiodun Omokehinde 1; Geibig, Daniel 1; Goerls, Helmar 1; Sun, Wen-Hua4 ; Hao, Xiang 2,3; Woods, Joseph Anthony Orighomisan 4; Plass, Winfried 1
刊名	JOURNAL OF ORGANOMETALLIC CHEMISTRY
	2014-03-15
卷号	754 页码:39-50
关键词	Palladium Carbon-carbon Cross-coupling Suzuki-miyaura Catalysis Azole Ligands
ISSN号	0022-328X
DOI	10.1016/j.jorganchem.2013.12.041
英文摘要	A series of dichloropalladium(II) complexes (Pd1-Pd4ox) based on derivatives of the hemilabile 2-(1H-imidazol- 2-yl) pyridine and 2-(oxazol-2-yl) pyridine ligands were synthesized and characterized. The ligands were designed to introduce a variety of electronic and structural features and crystal structures of Pd1, Pd1Me, Pd3, and Pd3Me were determined. Pd1 and Pd1Me both crystallize in the monoclinic space group C2/c. Pd3 crystallizes in the monoclinic space group P2(1)/c while Pd3Me crystallizes in the orthorhombic space group P2(1)2(1)2(1). All complexes were utilized as pre-catalysts in a comparative study to probe relevant features of the palladium active species during high temperature Suzuki-Miyaura cross-coupling catalysis. Relatively higher catalytic activities were obtained for complexes bearing the bidentate ligands that possess weaker azole donor arms. Results obtained suggest that ligand dissociation steps may be important for generating active species with high efficiency. In particular, the observed ligand effects in the investigated series indicate that higher catalyst efficiencies were observed with complexes for which the coordination of the ligand at the palladium center could readily be converted into a monodentate mode. (C) 2013 Elsevier B. V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000331190100007
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/52333]
专题	中国科学院化学研究所化学研究所_工程塑料实验室
通讯作者	Eseola, Abiodun Omokehinde
作者单位	1.Univ Jena, Inst Anorgan & Analyt Chem, Lehrstuhl Anorgan Chem 2, D-07743 Jena, Germany 2.Chinese Acad Sci, Key Lab Engn Plast, Inst Chem, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China 4.Univ Ibadan, Dept Chem, Inorgan Chem Unit, Ibadan, Nigeria
推荐引用方式 GB/T 7714	Eseola, Abiodun Omokehinde,Geibig, Daniel,Goerls, Helmar,et al. Palladium(II) complexes bearing 2-(1H-imidazol/oxazol-2-yl)-pyridines: Synthesis, structures and ligand effects in Suzukie-Miyaura cross-coupling[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY,2014,754:39-50.
APA	Eseola, Abiodun Omokehinde.,Geibig, Daniel.,Goerls, Helmar.,Sun, Wen-Hua.,Hao, Xiang.,...&Plass, Winfried.(2014).Palladium(II) complexes bearing 2-(1H-imidazol/oxazol-2-yl)-pyridines: Synthesis, structures and ligand effects in Suzukie-Miyaura cross-coupling.JOURNAL OF ORGANOMETALLIC CHEMISTRY,754,39-50.
MLA	Eseola, Abiodun Omokehinde,et al."Palladium(II) complexes bearing 2-(1H-imidazol/oxazol-2-yl)-pyridines: Synthesis, structures and ligand effects in Suzukie-Miyaura cross-coupling".JOURNAL OF ORGANOMETALLIC CHEMISTRY 754(2014):39-50.