Journal
DALTON TRANSACTIONS
Volume 40, Issue 14, Pages 3677-3682Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0dt01740j
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Funding
- EPSRC [EP/F037864]
- EPSRC [EP/F037864/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F037864/1] Funding Source: researchfish
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In this paper we report the synthesis and solid-state structures for a series of pyridine based Cu(II) complexes and preliminary data for the asymmetric Henry reaction. Interestingly, the solid-state structures indicate the incorporation of an alcohol into one of the imine groups of the ligand, forming a rare a-amino ether group. The complexes have been studied via single crystal X-ray diffraction, EPR spectroscopy and mass spectrometry. Intriguingly, it has been observed that the alcohol only adds to one of the imine moieties. Density functional theory (DFT) calculations have also been employed to rationalise the observed structures. The Cu(II) complexes have been tested in the asymmetric Henry reaction (benzaldehyde + nitromethane or nitroethane) with ee's up to 84% being achieved as well as high conversions and modest diastereoselectivities.
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