Category: 13395-16-9

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.name: Bis(acetylacetone)copper, Name is Bis(acetylacetone)copper, molecular formula is C10H16CuO4, name: Bis(acetylacetone)copper. In a Article, authors is Syroezhko，once mentioned of name: Bis(acetylacetone)copper

Kinetic features of catalytic decomposition of cyclohexyl hydroperoxide and 1-methylcyclohexyl hydroperoxide

Catalytic decomposition of cyclohexyl and 1-methylcyclohexyl peroxides in the presence of 3d-metal acetylacetonates was studied.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

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A Copper-Catalyzed Tandem C?H ortho-Hydroxylation and N?N Bond-Formation Transformation: Expedited Synthesis of 1-(ortho-Hydroxyaryl)-1H-indazoles

A facile, one-pot synthesis of 1H-indazoles featuring a Cu-catalyzed C?H ortho-hydroxylation and N?N bond-formation sequence with the use of pure oxygen as the terminal oxidant was developed. The reaction of readily available 2-arylaminobenzonitriles with various organometallic reagents led to ortho-arylamino N?H ketimine species. Subsequent Cu-catalyzed hydroxylation at the ortho position of the aromatic ring followed by N?N bond formation in DMSO under a pure-oxygen atmosphere afforded a wide variety of 1-(ortho-hydroxyaryl)-1H-indazoles in good to excellent yields. This efficient method does not require the utilization of noble-metal catalysts, elaborate directing groups, or privileged ligands.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

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Synthesis and characterization of bis (acetylacetonato kappa-O, O?) [zinc(ii)/copper(ii)] hybrid organic-inorganic complexes as solid metal organic precursors

We have synthesized novel metal organic hybrid mixed compounds of bis (acetylacetonato kappa-O, O?) [zinc(ii)/copper(ii)]. Taking C10H14O4Zn0.7Cu0.3 (Z0.7C0.3AA) as an example, the crystals are composed of Z0.7C0.3AA units and uncoordinated water molecules. Single-crystal X-ray diffraction results show that the complex Z0.7C0.3AA crystallizes in the monoclinic system, space group P21/n. The unit cell dimensions are a = 10.329(4) A, b = 4.6947(18) A, and c = 11.369(4) A; the angles are alpha = 90, beta = 91.881(6), and gamma = 90, the volume is 551.0(4) A3, and Z = 2. In this process, the M(ii) ions of Zn and Cu mix and occupy the centers of symmetrical structural units, which are coordinated to two ligands. The measured bond lengths and angles of O-M-O vary with the ratio of metal species over the entire series of the complexes synthesized. The chemistry of the as-synthesized compounds has been characterized using infrared spectroscopy, mass spectroscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy analysis, and the morphology of the products has been characterized using scanning electron microscopy. The thermal decomposition of the Z0.7C0.3AA composites measured by thermogravimetric analysis suggests that these complexes are volatile. The thermal characteristics of these complexes make them attractive precursors for metal organic chemical vapor deposition.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Safety of Bis(acetylacetone)copper, Name is Bis(acetylacetone)copper, belongs to copper-catalyst compound, is a common compound. Safety of Bis(acetylacetone)copperIn an article, authors is Balkan, Timucin, once mentioned the new application about Safety of Bis(acetylacetone)copper.

One-pot synthesis of monodisperse copper?silver alloy nanoparticles and their composition-dependent electrocatalytic activity for oxygen reduction reaction

Development of an economical, well-defined and efficient electrocatalyst having a potential to replace Pt/C is crucial for oxygen reduction reaction (ORR). In this respect, we report herein one-pot wet-chemical protocol for the composition-controlled synthesis of monodisperse CuAg alloy nanoparticles (NPs) and their composition-dependent electrocatalytic activities in ORR for the first time under an alkaline condition. The presented synthetic procedure yields CuAg NPs that exhibit monodisperse size distribution with an average particle diameter of ?8 nm. Almost homogenous CuAg alloy formation is proved by using many advanced analytical techniques despite the considerable lattice mismatch between Cu and Ag. At all compositions investigated, the ORR activities of CuAg electrocatalysts are found to be significantly higher than monometallic Ag NPs. Improved ORR kinetics of CuAg alloy NPs are demonstrated by Tafel slopes (85 mV/dec for Cu30Ag70, 84 mV/dec for Cu40Ag60 and 78 mV/dec for Cu60Ag40 which are all smaller than that of monometallic Ag (113 mV/dec). Electrochemical impedance measurements support these findings and represent that charge transfer resistance strongly depends on composition of CuAg electrocatalyst. The ORR activity and surface analysis results put Cu40Ag60 forward since Cu oxidation is suppressed in Cu40Ag60 NPs, caused by Ag enhancement in the surface.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

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X-ray crystal structures of copper(II) and cobalt(II) complexes with Schiff base ligands. Reactivity towards dioxygen

Copper(II) and cobalt(II) Schiff base complexes with derivatives of the pentadentate ligand bis(salicylideneimino-3-propyl)amine [H2salDPT] have been prepared. The X-ray crystal structures of the copper(II) complexes Cu[salDPT] and Cu[sal(n-propyltrimethylsilyl)DPT] were determined and revealed five-coordination at the metal centre in both cases. The 1:1 dioxygen adduct of Co[sal(n-propyltrimethylsilyl)DPT] was also isolated and its X-ray molecular structure determined.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 13395-16-9 is helpful to your research. Related Products of 13395-16-9

Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

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A gas-chromatographic study of the thermodynamic characteristics of the interaction of sorbates with combined liquid phases prepared from polyethylene glycol and metal acetylacetonates

The thermodynamic characteristics of the interaction between sorbates and combined liquid phases for gas chromatography were determined. The phases were prepared from polyethylene glycol-20M modified with copper, aluminum, and nickel acetylacetonates.

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.name: Bis(acetylacetone)copper, Name is Bis(acetylacetone)copper, molecular formula is C10H16CuO4, name: Bis(acetylacetone)copper. In a Article, authors is Du, Zhiyun，once mentioned of name: Bis(acetylacetone)copper

Ionic liquid mediated Cu-catalyzed cascade oxa-Michael-oxidation: Efficient synthesis of flavones under mild reaction conditions

Flavonoids are a class of natural products, found in a wide range of vascular plants and dietary components. Their low toxicity and extensive biological activities, including anti-cancer and anti-bacterial, have made them attractive candidates to serve as therapeutic agents for many diseases. Herein, we disclose a highly efficient synthetic method of CuI-catalyzed cascade oxa-Michael-oxidation, using chalcones as substrates, mediated by the ionic liquid [bmim][NTf2] at a low temperature. This efficient synthetic method has demonstrated high synthetic utility and can afford flavones in good to high yields (up to 98%).

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Reference：
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

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Magnetic, Spectral and Thermal Studies on Some Mixed Ligand Complexes of Copper(II) and Nickel(II)

Several mixed ligand complexes of copper(II) and nickel(II) having the compositions and , where aaH is acetylacetone, tcaH is trichloroacetic acid; L is gamma-picoline, imidazole, 2-picoline-N-oxide or thiourea and M is Cu(II) or Ni(II), have been isolated and characterised on the basis of their analyses, molar conductance, magnetic susceptibility, infrared, electronic spectral data and thermogravimetric measurements.The infrared spectra reveal the presence of uninegative bidentate acetyl acetonate and trichloroacetate groups in all these complexes.As the temperature increases, the mixed ligand complexes start decomposing with the loss of neutral donor ligand, followed by trichloroacetate ion and acetylacetonate ion in definite steps and ultimately forming MO at 600-675 deg .Square planar, tetrahedral, distorted octahedral and octahedral structures have been proposed for the complexes, , , and , respectively.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Synthetic Route of 13395-16-9, One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time.Mentioned the application of 13395-16-9.

Mechanism and Models for Copper Mediated Nucleophilic Aromatic Substitution. 2. A Single Catalytic Species from Three Different Oxidation States of Copper in an Ullmann Synthesis of Triarylamines

Ullmann condensations of diarylamines with iodobenzenes has been investigated under homogeneous and a heterogeneous catalytic conditions with cupruos and cupric salts, as well as powered copper metal.Copper catalyzed condensation of diarylamines with iodoaromatics is relatively insensitive to substituent (for substituted iodobenzenes p=-0.25; for substituted diphenylamines p=1.09) but quite sensitive to halogen (k1/kBr.200).The first direct evidence for solution catalysis after filtration of a metal catalyzed reactions was obtained.Quantitative analysis of reaction rates, product yields, and catalyst characteristics leads to a comprehensive picture of the formation of soluble cuprous ions as the single active catalytic species under all conditions investigated.This hypothesis rationalizes many of the perplexing results which typify the literature associated with copper catalyzed nucleophilic aromatic substitution.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 13395-16-9, name is Bis(acetylacetone)copper, introducing its new discovery. COA of Formula: C10H16CuO4

Crystal phase-controlled synthesis of Cu2FeSnS4 nanocrystals with a band gap of around 1.5 eV

Cu2FeSnS4 (CFTS) nanocrystals with tunable crystal phase have been synthesized using a solution-based method. As-synthesized CFTS nanocrystals in the shape of oblate spheroid and triangular plate with band gaps of 1.54 ¡À 0.04 and 1.46 ¡À 0.03 eV, respectively, appear attractive as a low-cost substitute for thin film solar cells. The Royal Society of Chemistry 2012.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”