Palladium catalyzed Suzuki cross-coupling reactions using N,O-bidentate ligands

被引:99
作者
Lai, YC [1 ]
Chen, HY [1 ]
Hung, WC [1 ]
Lin, CC [1 ]
Hong, FE [1 ]
机构
[1] Natl Chung Hsing Univ, Dept Chem, Taichung 40227, Taiwan
关键词
Suzuki reaction; palladium complex; Schiff-base; bidentate ligand;
D O I
10.1016/j.tet.2005.08.005
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Palladium-catalyzed Suzuki cross-coupling reactions employing Schiff-bases as ligands toward a series of substituted arylbromides and boronic acids were pursued. In the presence of a N,O-bidentate ligand, 2-[1-(2,4,6-trimethyl-phenylimino)-ethyl] -phenol 5, the catalytic reactions could be carried out efficiently at room temperature with a wide array of arylbromides, even with electronically deactivated arenes. A deprotonated 5, 5', chelated palladium acetate complex, [5'Pd(II)(OAc)(solv)] 8, was proposed as a precursor of a genuine catalytically active species. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:9484 / 9489
页数:6
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