Palladium-catalyzed aerobic alcohol oxidation supported by a new type of α-diimine ligands

2008 ◽  
Vol 86 (8) ◽  
pp. 782-790 ◽  
Author(s):  
Jin Zhou ◽  
Xiaoyan Li ◽  
Hongjian Sun
Keyword(s):  
Catalytic Activity ◽  
Electronic Properties ◽  
Steric Hindrance ◽  
Aerobic Oxidation ◽  
Alcohol Oxidation ◽  
Palladium Complexes ◽  
Benzylic Alcohols ◽  
Diimine Ligands ◽  
Palladium Catalyzed ◽  
New Type

A series of new ionic sulfonated α-diimine ligands were prepared and employed as supporting ligands for the palladium-catalyzed aerobic alcohol oxidation. The electronic properties, rigidity, and steric hindrance of ligands have remarkable influences upon the catalytic activity of the palladium complexes. The best catalytic result could be achieved using ligand 9 with an electron-withdrawing sulfonyl substituent together with bulky groups (iso-propyl in 2,6-positions). This diimine/palladium-catalyzed system is highly efficient for the oxidation of various benzylic alcohols, and showed moderate yields for the secondary aliphatic alcohols and cyclic alcohols.Key words: α-diimine, palladium, aerobic oxidation, alcohol.

AIBN/NaBr-promoted aerobic oxidation of benzylic alcohols via a radical process

2016 ◽  
Vol 14 (2) ◽  
pp. 577-581 ◽  
Author(s):  
Chengkou Liu ◽  
Zheng Fang ◽  
Zhao Yang ◽  
Qingwen Li ◽  
Shiyu Guo ◽  
...  
Keyword(s):  
Aerobic Oxidation ◽  
Alcohol Oxidation ◽  
Radical Mechanism ◽  
Radical Process ◽  
Benzylic Alcohols ◽  
First Time ◽  
Oxidation System

A new aerobic alcohol oxidation system of AIBN/NaBr was described for the first time. Moreover, a radical mechanism was assumed and confirmed.

Highly practical sodium(i)/azobenzene catalyst system for aerobic oxidation of benzylic alcohols

RSC Advances ◽  
2015 ◽  
Vol 5 (97) ◽  
pp. 79699-79702 ◽  
Author(s):  
Chengkou Liu ◽  
Zheng Fang ◽  
Zhao Yang ◽  
Qingwen Li ◽  
Shiyu Guo ◽  
...  
Keyword(s):  
Carbonyl Compounds ◽  
Aerobic Oxidation ◽  
Alcohol Oxidation ◽  
Catalyst System ◽  
Benzylic Alcohols ◽  
Oxidation System

An aerobic alcohol oxidation system was described firstly. The corresponding carbonyl compounds and acids were obtained respectively in good yields.

Porous Ru/RuOx/LDH as highly active heterogeneous catalysts for the aerobic oxidation of alcohols

2016 ◽  
Vol 40 (10) ◽  
pp. 8364-8370 ◽  
Author(s):  
Yu Tan ◽  
Dalei Sun ◽  
Libao Chen ◽  
Cheng Chao Li
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalysts ◽  
Aerobic Oxidation ◽  
Alcohol Oxidation ◽  
Highly Active ◽  
Oxidation Of Alcohols

Porous LDH supported Ru/RuOx nanocatalysts exhibited much better catalytic activity and stability than conventional Ru-based catalysts for alcohol oxidation.

Controlled Aerobic Oxidation of Primary Benzylic Alcohols to Aldehydes Catalyzed by Polymer-Supported Triazine-Based Dendrimer–Copper Composites

Synlett ◽  
2018 ◽  
Vol 29 (09) ◽  
pp. 1152-1156 ◽  
Author(s):  
Shiguang Pan ◽  
Shuo Yan ◽  
Takao Osako ◽  
Yasuhiro Uozumi
Keyword(s):  
Catalytic Activity ◽  
Ethylene Glycol ◽  
Copper Complexes ◽  
Aerobic Oxidation ◽  
Catalytic Amount ◽  
Significant Loss ◽  
Atmospheric Conditions ◽  
Benzylic Alcohols ◽  
Simple Filtration ◽  
Polymer Supported

A controlled aerobic oxidation of primary benzylic alcohols to the corresponding benzaldehydes by using polystyrene–poly­(ethylene glycol) (PS–PEG) resin-supported triazine-based polyethyleneamine dendrimer–copper complexes [PS–PEG-TD2–Cu(II)] was developed. In particular, PS–PEG-TD2–Cu(OAc)2 efficiently catalyzed the aerobic oxidation of benzylic alcohols in the presence of a catalytic amount of TEMPO under atmospheric conditions to give the corresponding aldehydes in up to quantitative yield. The catalyst was readily recovered by simple filtration and reused four times without significant loss of its catalytic activity.

Synthesis and characterization of copper(ii) 4′-phenyl-terpyridine compounds and catalytic application for aerobic oxidation of benzylic alcohols

2014 ◽  
Vol 43 (10) ◽  
pp. 4048-4058 ◽  
Author(s):  
Zhen Ma ◽  
Lijuan Wei ◽  
Elisabete C. B. A. Alegria ◽  
Luísa M. D. R. S. Martins ◽  
M. Fátima C. Guedes da Silva ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Aerobic Oxidation ◽  
Synthesis And Characterization ◽  
Benzylic Alcohols ◽  
Mild Conditions ◽  
Catalytic Application ◽  
Alkaline Aqueous Solution

Cu(ii)-terpyridine complexes in combination with TEMPO exhibit catalytic activity, under mild conditions and in alkaline aqueous solution, for the aerobic oxidation of benzylic alcohols.

The design and catalytic performance of molybdenum active sites on an MCM-41 framework for the aerobic oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran

2019 ◽  
Vol 9 (3) ◽  
pp. 811-821 ◽  
Author(s):  
Zhao-Meng Wang ◽  
Li-Juan Liu ◽  
Bo Xiang ◽  
Yue Wang ◽  
Ya-Jing Lyu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Active Sites ◽  
Aerobic Oxidation ◽  
Catalytic Performance ◽  
Mcm 41

The catalytic activity decreases as –(SiO)3Mo(OH)(O) > –(SiO)2Mo(O)2 > –(O)4–MoO.

Monodisperse-porous cerium oxide microspheres as a new support with appreciable catalytic activity for a composite catalyst in benzyl alcohol oxidation

2021 ◽  
Author(s):  
Kadriye Özlem Hamaloğlu ◽  
Rukiye Babacan Tosun ◽  
Serap Ulu ◽  
Hakan Kayi ◽  
Cengiz Kavaklı ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Cerium Oxide ◽  
Sol Gel ◽  
Alcohol Oxidation ◽  
Pd Nanoparticles ◽  
Composite Catalyst ◽  
Benzyl Alcohol Oxidation ◽  
Supported Pd

A synergistic catalyst in the form of monodisperse-porous CeO2 microspheres supported Pd nanoparticles (Pd NPs) was synthesized. CeO2 microspheres 4 μm in size were obtained by a newly developed “sol-gel...

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