Highly efficient and practical aerobic oxidation of alcohols by inorganic-ligand supported copper catalysis

Wei, Zheyu; Shi, Ruizhi; Zhao, Qixin; Han, Yizhuo; Zhang, Gang; Wei, Yongge

doi:10.1039/c9gc01248f

Cited by 63 publications

(35 citation statements)

References 64 publications

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“…Controlling the size of metallic nanoparticles is critical for their potential applications in energy storage, pharmaceutical, , and environmental remedies. , Silver nanoparticles (Ag NPs), enjoying high commercial relevance, have been utilized in numerous fields as catalysts, biosensors, and antimicrobials, , thanks to their good catalytic activity, physicochemical performance, electrical conductivity, and antibacterial properties . Similar to other nanoparticles, Ag NPs readily form aggregation .…”

Section: Introductionmentioning

confidence: 99%

Lignin-Directed Control of Silver Nanoparticles with Tunable Size in Porous Lignocellulose Hydrogels and Their Application in Catalytic Reduction

Zhang

Chu

et al. 2020

ACS Sustainable Chem. Eng.

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Inspired by its unique porous structure, high value-added functional hydrogels combined with metal nanoparticles can lead to applications in different areas, including environmental catalysis. For this purpose, controlling the metal nanoparticle size is paramount. Herein, the porous lignocellulose hydrogel (LCG) with different lignin contents served as the matrix for in situ-synthesizing silver–lignin nanoparticles (Ag-L NPs), with lignin in the LCG as the reducing and capping agent of Ag-L NPs and the lignin content to control the size of Ag-L NPs. The well-dispersed lignin in the LCG network ensures immobilization and dispersion of Ag-L NPs. The particle size of Ag-L NPs is tailored by adjusting the lignin content (0.5, 6.5, 11.6, and 18.4%) of the LCG: the higher the lignin content, the smaller the Ag-L NPs. The smallest Ag-L NPs obtained were of 9.5 nm. The as-prepared Ag-L NPs/LCG composite samples showed outstanding catalytic reduction capability, with superior stability/reusability when applied for the catalytic reduction of 4-nitrophenol. Moreover, the Ag-L NPs/LCG composites exhibited high antibacterial activity, thus contributing to long-term storage stability.

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Section: Introductionmentioning

confidence: 99%

Lignin-Directed Control of Silver Nanoparticles with Tunable Size in Porous Lignocellulose Hydrogels and Their Application in Catalytic Reduction

Zhang

Chu

et al. 2020

ACS Sustainable Chem. Eng.

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“…First, benzyl alcohol or benzyl methyl ether ( III ) is converted to benzaldehyde ( IV ) in the presence of Fe(III)/DDQ. 16 , 17 , 25 − 28 Then, NH 4 OA attacks benzaldehyde for imine intermediate ( V ) formation. 21 − 24 The reaction of radical intermediate ( II ) generated from substrate ( I ) reacted with intermediate ( V ), leading to the formation of imine intermediate ( VI ).…”

Section: Resultsmentioning

confidence: 99%

One-Pot Multicomponent Coupling Reaction of Catechols, Benzyl Alcohols/Benzyl Methyl Ethers, and Ammonium Acetate toward Synthesis of Benzoxazoles

2021

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“…Anderson-type POMs are a kind of classic structure and can be grafted tris (trihydroxyl organic compounds) to obtain functional derivatives, which allow them to have good application prospects in many aspects. For example, Wei’s group has done a lot of research on Anderson structural oxidation-catalyzed organic small molecules, and Rompel’s group has made a great contribution to the biological applications of Anderson-type POMs . Nevertheless, the application of Anderson POMs is still lacking in some aspects, such as photocatalysis, CO 2 fixation, etc.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Synthesis of Tris-Anderson Polyoxometalates for Facile CO₂ Cycloaddition

Zhang

Han

et al. 2021

Inorg. Chem.

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Four new tris-Anderson polyoxometalates (POMs), ( N H 4 ) 4 [ Z n M o 6 O 1 8 ( C 4 H 8were synthesized by a microwave-assisted method. Single-crystal X-ray diffraction revealed that 1 and 2 contained a tris (trihydroxyl organic compounds) ligand grafted on one side, while two tris ligands were grafted on two sides to form χ/δ and δ/δ isomers in 3 and 4, respectively. 1 H and 13 C NMR spectra of the χ/δ isomer 3 were obtained for the first time, with six methylenes showing six peaks in the 1 H NMR spectrum and only four peaks in the 13 C NMR spectrum. Mass spectrometry monitoring revealed that during the microwave-assistant process the tris ligand can graft onto POMs to form 1, while tris directly coordinates with metallic heteroatoms to form isopolymolybdates during the conventional reflux synthesis process. In addition, 1−4 can catalyze CO 2 with epoxides into cyclic carbonates with high selectivity and yields at an atmospheric pressure of CO 2 , which is lower than the pressure of CO 2 in other catalysis using POMs as catalysts. Furthermore, 1−4 showed good catalytic stability and cycling properties. Mechanism studies substantiated POMs cocatalyzed with Br − to improve the catalytic yields.

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Highly efficient and practical aerobic oxidation of alcohols by inorganic-ligand supported copper catalysis

Abstract: An inorganic-ligand supported copper catalyst which can effectively catalyze the aerobic oxidation of alcohols to afford aldehydes or ketones with excellent selectivity and yields.

Cited by 63 publications

References 64 publications

Lignin-Directed Control of Silver Nanoparticles with Tunable Size in Porous Lignocellulose Hydrogels and Their Application in Catalytic Reduction

Lignin-Directed Control of Silver Nanoparticles with Tunable Size in Porous Lignocellulose Hydrogels and Their Application in Catalytic Reduction

One-Pot Multicomponent Coupling Reaction of Catechols, Benzyl Alcohols/Benzyl Methyl Ethers, and Ammonium Acetate toward Synthesis of Benzoxazoles

Microwave-Assisted Synthesis of Tris-Anderson Polyoxometalates for Facile CO₂ Cycloaddition

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Highly efficient and practical aerobic oxidation of alcohols by inorganic-ligand supported copper catalysis

Abstract: An inorganic-ligand supported copper catalyst which can effectively catalyze the aerobic oxidation of alcohols to afford aldehydes or ketones with excellent selectivity and yields.

Cited by 63 publications

References 64 publications

Lignin-Directed Control of Silver Nanoparticles with Tunable Size in Porous Lignocellulose Hydrogels and Their Application in Catalytic Reduction

Lignin-Directed Control of Silver Nanoparticles with Tunable Size in Porous Lignocellulose Hydrogels and Their Application in Catalytic Reduction

One-Pot Multicomponent Coupling Reaction of Catechols, Benzyl Alcohols/Benzyl Methyl Ethers, and Ammonium Acetate toward Synthesis of Benzoxazoles

Microwave-Assisted Synthesis of Tris-Anderson Polyoxometalates for Facile CO2 Cycloaddition

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Microwave-Assisted Synthesis of Tris-Anderson Polyoxometalates for Facile CO₂ Cycloaddition