Palladium catalyzed Suzuki cross-coupling reactions using N,O-bidentate ligands |
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Authors: | Yi-Chun Lai |
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Institution: | Department of Chemistry, National Chung Hsing University, Taichung 40227, Taiwan |
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Abstract: | 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. |
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Keywords: | Suzuki reaction Palladium complex Schiff-base Bidentate ligand |
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