Reactions of 1,2-dicarbonyls with metallic copper under argon and dioxygen. Oxidative C–C bond scission by metallic copper
- 1 January 1988
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 10,p. 2663-2667
- https://doi.org/10.1039/dt9880002663
Abstract
1,2-Diketones such as benzil, 2,2′-furil, and di(2-pyridyl) diketone react with metallic copper in pyridine under argon by electron transfer from the copper to the 1,2-diketones, giving semidionato copper(I) and µ-enediolato-dicopper(I) complexes in low equilibrium concentrations as detected by e.s.r. and visible absorption spectra. Under dioxygen with a 1 : 1 stoicheiometry of copper to 1,2-diketones, a facile oxidative C–C bond cleavage occurs to give well defined carboxylate copper(II) complexes with ligands such as pyridine, 2,2′-bipyridine, and NNN′N′-tetramethylethylenediamine.Keywords
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