Transition metal based catalysts in the aerobic oxidation of alcohols

Parmeggiani, Camilla; Cardona, Francesca

doi:10.1039/c2gc16344f

Cited by 626 publications

(314 citation statements)

References 193 publications

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“…Numerous transition metal-catalysed oxidations have been developed which can be achieved under mild conditions with high selectivity using benign oxidants such as oxygen or hydrogen peroxide. [2] Use of the Oppenauer oxidation usually leads to high selectivities. [3] As part of a study on the conversion of 5-hydroxymethyl-2-furfural, readily available from renewable resources, into caprolactam we wanted to investigate the dehydrogenative cyclisation of 1,6-hexanediol into caprolactone (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Ruthenium/1,1′‐Bis(diphenylphosphino)ferrocene‐Catalysed Oppenauer Oxidation of Alcohols and Lactonisation of α,ω‐Diols using Methyl Isobutyl Ketone as Oxidant

et al. 2013

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A number of ruthenium catalysts, made in situ from [RuA C H T U N G T R E N N U N G (p-cymene)Cl 2 ] 2 and various monodentate and bidentate phosphorus ligands were screened in the double Oppenauer oxidation of 1,6-hexanediol to caprolactone using methyl isobutyl ketone as oxidant and potassium carbonate as base. The catalyst based on 1,1'-bis(diphenylphosphinyl)ferrocene gave this lactone in excellent yield. The same catalyst was evaluated for the oxidation of other diols to their lactones, of primary alcohols to the corresponding aldehydes and of secondary alcohols to the ketones under the same reaction conditions. The products were obtained in moderate to excellent yields.

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Section: Introductionmentioning

confidence: 99%

Ruthenium/1,1′‐Bis(diphenylphosphino)ferrocene‐Catalysed Oppenauer Oxidation of Alcohols and Lactonisation of α,ω‐Diols using Methyl Isobutyl Ketone as Oxidant

et al. 2013

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“…Fine chemistry products, such as agro-chemicals, drugs and fragrances, require ketones and/or aldehydes as starting materials, which can be obtained by oxidation of alcohols [1][2][3]. Nowadays it is imperative to convert alcohol substrates into the desired more oxidized forms, to fulfill the demand of the market, in a sustainable manner.…”

Section: Introductionmentioning

confidence: 99%

First-Row-Transition Ion Metals(II)-EDTA Functionalized Magnetic Nanoparticles as Catalysts for Solvent-Free Microwave-Induced Oxidation of Alcohols

Martins

Amorim

et al. 2017

Catalysts

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A series of first-row transition-metals combined with ethylenediamine tetraacetic acid (EDTA), as metal-based N,O-chelating ligands, at the surface of ferrite magnetic nanoparticles (MNPs) was prepared by a co-precipitation method. Those EDTA functionalized MNPs with general formula Fe 3 O 4 @EDTA-M 2+ [M = Mn 2+ (1), Fe 2+ (2), Co 2+ (3), Ni 2+ (4), Cu 2+ (5) or Zn 2+ (6)] were characterized by FTIR (Fourier Transform Infrared) spectroscopy, powder XRD (X-ray Diffraction), SEM (Scanning Electron Microscope), EDS (Energy Dispersive Spectrometer), VSM (Vibrating Sample Magnetometer) and TGA (Thermal Gravity Analysis). The application of the magnetic NPs towards the microwave-assisted oxidation of several alcohol substrates in a solvent-free medium was evaluated. The influence of reaction parameters such as temperature, time, type of oxidant, and presence of organic radicals was investigated. This study demonstrates that these MNPs can act as efficient catalysts for the conversion of alcohols to the corresponding ketones or aldehydes with high selectivity and yields up to 99% after 2 h of reaction at 110 • C using t-BuOOH as oxidant. Moreover, they have the advantage of being magnetically recoverable catalysts that can be easily recycled in following runs.

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“…12 Therefore, most research on aerobic oxidations using heterogeneous catalysts has focused mainly on highly active noble metals such as platinum, palladium and gold. 13 Despite a hand full of reports on platinum and palladium as potential metals to catalyze oxidative dehydrogenation of alcohols, an 3 overshadowing focus has emerged on gold chemistry since the pioneering work by Bond et al, 14 Hutchings, 15 Haruta et al 16 and Prati and Rossi 17 utilizing supported gold nanoparticles. This abrupt interest is not only because gold is cheaper than its noble metal counterparts, but also that it circumvents most of the drawbacks associated with Pt and Pd.…”

mentioning

confidence: 99%

Copper oxide as efficient catalyst for oxidative dehydrogenation of alcohols with air

Poreddy

Engelbrekt

Riisager

2015

Catal. Sci. Technol.

140

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Transition metal based catalysts in the aerobic oxidation of alcohols

Cited by 626 publications

References 193 publications

Ruthenium/1,1′‐Bis(diphenylphosphino)ferrocene‐Catalysed Oppenauer Oxidation of Alcohols and Lactonisation of α,ω‐Diols using Methyl Isobutyl Ketone as Oxidant

Ruthenium/1,1′‐Bis(diphenylphosphino)ferrocene‐Catalysed Oppenauer Oxidation of Alcohols and Lactonisation of α,ω‐Diols using Methyl Isobutyl Ketone as Oxidant

First-Row-Transition Ion Metals(II)-EDTA Functionalized Magnetic Nanoparticles as Catalysts for Solvent-Free Microwave-Induced Oxidation of Alcohols

Copper oxide as efficient catalyst for oxidative dehydrogenation of alcohols with air

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