Imidazolium-based frameworks:: Imidazolium salt-oxazoline/palladium(II) acetate in situ catalyst systems

被引：2

作者：

Alcalde, Ermitas ^{[1
]}

Dinares, Immaculada ^{[1
]}

Mesquida, Neus ^{[1
]}

Rodriguez, Sandra ^{[1
]}

机构：

[1] Univ Barcelona, Fac Farm, Lab Quim Organ, E-08028 Barcelona, Spain

来源：

SYNTHESIS-STUTTGART | 2007年 / 06期

关键词：

bidentate ligands; carbenes; cross-coupling; catalysis; N-heterocyclic carbenes;

D O I：

10.1055/s-2007-965938

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

New simple imidazolium-based bidentate ligand precursors were prepared by a three-step protocol and bis(oxazoline) ligands were prepared in two steps. A Suzuki-Miyaura reaction was utilized to ascertain the activity of a palladium(11) catalyst system generated in situ from an oxazolinyl-imidazolium cation, a bis(oxazoline), and palladium(II) acetate. Among them, two sterically hindered N-arylimidazolium cations demonstrated their efficiency with both aryl bromides and chlorides in low catalyst-system loading.

引用

页码：865 / 872

页数：8

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