Journal ArticleDOI
The oxidation of 2,6-xylenol catalysed by polymer supported copper complexes
P.C. Selvaraj,V. Mahadevan +1 more
TLDR
In this article, the synthesis and characterisation of copolymers containing tertiary nitrogen to which Cu(I) or Cu(II) species are anchored is described, and the anchored species function as catalysts for the oxidation of 2,6-xylenol by O 2 under basic conditions.About:
This article is published in Polymer.The article was published on 1998-01-01. It has received 7 citations till now. The article focuses on the topics: 2,6-Xylenol & Catalyst support.read more
Citations
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Journal ArticleDOI
Aerobic Copper-Catalyzed Organic Reactions
TL;DR: The chemistry of copper is extremely rich because it can easily access Cu0, CuI, CuII, and CuIII oxidation states allowing it to act through one-electron or two-Electron processes, which feature confer a remarkably broad range of activities allowing copper to catalyze the oxidation and oxidative union of many substrates.
Journal ArticleDOI
Selective Oxidation of Phenols to Hydroxybenzaldehydes and Benzoquinones with Dioxygen Catalyzed by Polymer-Supported Copper
TL;DR: In this paper, the molar ratio of the bipyridine unit of the polymer ligand to Cu was unity, i.e., N/Cu = 2, and the best results were obtained.
Journal ArticleDOI
Preparation of chitosan‐bound nitrobenzaldehyde metal complexes and studies on its catalytic oxidative activity and reactive mechanism
TL;DR: In this article, two chitosan-bound nitrobenzaldehyde metal complexes (m-CNBDM and o-NBMn) were characterized by infrared, X-ray photoelectron spectroscopy, solid-state 13C-NMR cross-polarity/magic-angle spinning, inductively coupled plasma, and elemental analysis.
Journal ArticleDOI
Catalysis by heterogenized metal polymers: Advances and prospects
TL;DR: In this paper, the effect of various factors on the catalysis of the main reactions used in organic synthesis (hydrogenation, polymerization, and redox processes) are analyzed.
Journal ArticleDOI
Oxidation of 2,6-di- tert -butylphenols to Diphenoquinones Catalysed by Schiff Base-Cu(II) Systems Immobilized on Polymer Support
TL;DR: In this paper, the catalytic activity of Cu(II) complexes with Schiff base immobilized on the synthesized supports were tested in the oxidation reaction of 2,6-di-tert-butylphenol (DTBP) to diphenoquinone (PQ) with tertbutylhydroperoxide.
References
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Journal ArticleDOI
Syntheses of new chelate‐polymers and its catalytic activities
TL;DR: In this paper, the catalytic effects of polymeric ligands of β-diketone type on the decomposition reaction of hydrogen peroxide and the oxidation reaction of ascorbic acid were measured in comparing with monomeric chelates of the same structure.
Journal ArticleDOI
Role of aliphatic diamine ligands in hydrogen peroxide decomposition with Dowex-50W resin as transition metal complex ions
TL;DR: In this paper, the rate constant, k (per g of dry resin) was evaluated over the temperature range 25-40°C with 1,6-hexamethylenediamine as a ligand, and the reaction was first order with respect to [H2O2 in all cases.
Journal ArticleDOI
Transition metal ions supported on hydrogels as hydrogenation catalysts
Jainamma Mathew,V. Mahadevan +1 more
TL;DR: In this article, the synthesis of new hydrogel polymers based on 2-hydroxyethyl methacrylate and other functional monomers is described, which are useful for anchoring palladium and rhodium species.
Journal ArticleDOI
Effect of nonpolar field formed by polymer ligand on the oxidation of 2,6-xylenol catalyzed by Cu complexes
TL;DR: In this paper, the effect of the nonpolar field formed by the polymer ligand on the catalysis was studied in dimethyl sulfoxide (DMSO) solvent, and the catalytic activity of the Cu complex increases in the following order; Cu-(styrene-vinylpyridine copolymer) (St·VP) complex > Cu-partially quarternized (by benzyl chloride) poly(vinyl pyridine)(BCQP) complex, etc.
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Studies on immobilized polymer-bound imidazole-copper(ii) complexes as catalysts: 1. Oxidative coupling polymerization of 2,6-dimethylphenol catalysed by copper(ii) complexes of poly(styrene-co-N-vinylimidazole)
Wei Chen,Ger Challa +1 more
TL;DR: In this article, the electron paramagnetic resonance spectra of these complexes indicate that the complex had a mononuclear structure Cu(PSIm)2+4 in solution for higher ligand/copper ratios, which was found to be more active catalyst for the reaction and more favourable for poly(2,6-dimethyl-1,4-phenylene oxide) formation than dinuclear complexes.