Front Cover: One‐Pot Conversion of Cyclohexane to Adipic Acid Using a µ<sub>4</sub>‐Oxido‐Copper Cluster as Catalyst Together with Hydrogen Peroxide (Eur. J. Inorg. Chem. 3/2020)

Gawlig, Christopher; Schindler, Siegfried; Becker, Jonathan

doi:10.1002/ejic.202000009

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[13,14,16] Additionally, mixtures of Cu II salts and dimethylglyoxime have been applied in catalytic reactions such as the N-arylation of imidazole derivatives [20] and the decomposition of hydrogen peroxide with subsequent oxidation of benzyl alcohol and ethylbenzene (zeolite encapsulated). [21] Due to our interest in multinuclear copper complexes and their reactivity, [12,22] we focused on the dinuclear complex [Cu 2 (H 2 dmg)(Hdmg)(dmg)] + (1) and its mononuclear analogue [Cu(Hdmg) 2 ] (2) as comparison (Figure 1). Two of the possible three isomers of 1 have been reported, whereas isomer I is predominant in literature [13,14,16] and favored with increasing pH value.…”

Section: Introductionmentioning

confidence: 99%

Cooperativity‐Driven Reactivity of a Dinuclear Copper Dimethylglyoxime Complex

Petrikat¹,

Steiger²,

Barani

et al. 2023

Chemistry A European J

View full text Add to dashboard Cite

In this report, we present the dinuclear copper(II) dimethylglyoxime (H2dmg) complex [Cu2(H2dmg)(Hdmg)(dmg)]+ (1), which, in contrast to its mononuclear analogue [Cu(Hdmg)2] (2), is subject to a cooperativity‐driven hydrolysis. The combined Lewis acidity of both copper centers increases the electrophilicity of the carbon atom in the bridging μ2‐O−N=C‐group of H2dmg and thus, facilitates the nucleophilic attack of H2O. This hydrolysis yields butane‐2,3‐dione monoxime (3) and NH2OH that, depending on the solvent, is then either oxidized or reduced. In ethanol, NH2OH is reduced to NH4+, yielding acetaldehyde as the oxidation product. In contrast, in CH3CN, NH2OH is oxidized by CuII to form N2O and [Cu(CH3CN)4]+. Herein are presented the combined synthetic, theoretical, spectroscopic and spectrometric methods that indicate and establish the reaction pathway of this solvent‐dependent reaction.

show abstract