期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 15, 期 40, 页码 10585-10592出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.200901014
关键词
click chemistry; coordination polymer; copper; N-arylation; tetradentate ligands
资金
- Agency for Science, Technology Research [R143-000-364-305]
- Ministry of Education [R-143-000361-112]
Five new tetradentate ligands [NNNN] with benzimidazolyl-imine or amine nitrogen donors have been synthesized in good yields under mild conditions from easily available substrates. trans-N,N'-bis(1-Ethyl-2-benzimidazolylmethylene) cyclohexane-1,2-diimine is the best accelerating ligand in this series that supports the Cu-I-catalyzed Ullmann N-arylation and the direct three-component azide-alkyne cycloaddition reaction to give the corresponding substituted imidazole, pyrazole, and triazole in high yields. Single-crystal Xray diffraction analysis of its complex with CuI reveals a novel one-dimensional coordination polymer of the metal chain bridged alternately by the [NNNN] ligand and diiodides.
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