期刊
NEW JOURNAL OF CHEMISTRY
卷 38, 期 1, 页码 338-347出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nj00863k
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资金
- CNRS
- Ministere de l'Enseignement Superieur et de la Recherche
- Institut Universitaire de France
- Agence Nationale de la Recherche [ANR-07-JCJC-0041]
We describe here the first examples of planar chiral ferrocenyl phosphane-benzimidazol-2-ylidene ligands and their coordination chemistry with palladium(II). All ligand precursors, namely enantiopure ferrocenyl phosphane-(benz)imidazolium salts, and all enantiopure palladium complexes have been fully characterised by H-1, P-31 and C-13 NMR, mass spectrometry and X-ray diffraction methods for seven examples. The potential of these very bulky bidentate ligands in catalysis was evaluated and compared to their imidazol-2-ylidene analogues. The influence of sterics was shown to be non-negligible as the bulkiest ligand gave the lowest activities in the asymmetric Suzuki-Miyaura reaction.
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