Category: copper-catalyst

Kamalov, G. L. published the artcileLiquid-phase oxidation of dibenzyl ether with air in the presence of some transition metal complexes, COA of Formula: 0, the publication is Neftekhimiya (1982), 22(6), 788-92, database is CAplus.

The title reaction was examined in the presence of the following catalysts: [(RNH)₂CS]₂CoCl₂ [R = H, Ph; (RNH)₂ = HN(CH₂)₃NH, HN(CH₂)₄NH], CoCl₂, [(RCO₂)₆(R¹H)_nFe₃(O)].L [R = Me, ClCH₂, Cl₃C, Me₃C, (un)substituted Ph; R¹ = (un)substituted BzO, HO; n = 2, 3; L = OH, Cl, NO₃), and β-dicarbonyl complexes of Cu(II). Electron-donating substituents in the last 2 groups of complexes increased the rate, and electron-withdrawing groups decreased it.

Neftekhimiya published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, COA of Formula: 0.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Nakagawa, Katsutoshi published the artcileCatalysis by homogeneous copper(II) chelate-amine complexes in the oxidation of 2,6-dialkylphenols, HPLC of Formula: 14284-06-1, the publication is Studies in Organic Chemistry (Amsterdam) (1988), 315-20, database is CAplus.

In the title reactions the oxidation activity and the oxidative-coupling mode of products were mainly governed by the copper(II) chelate and amine/copper(II) mole ratio, and the basicity of the amines, resp. The rate-determining step was the reaction of O with the copper-phenol adduct.

Studies in Organic Chemistry (Amsterdam) published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, HPLC of Formula: 14284-06-1.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Tadokoro, Hiroyuki published the artcileCatalysis of polyvinylpyridine-supported copper(II) during 2,6-Di-tert-butylphenol oxidation in the presence of inorganic base, Related Products of copper-catalyst, the publication is Journal of Catalysis (1992), 138(1), 24-37, database is CAplus.

The liquid-phase oxidation of 2,6-di-tert-butylphenol (BOH) was studied by using the heterogeneous polymer-supported Cu(II) catalyst, basic Cu(II)-poly(4-vinylpyridine) [Cu(II)-PVP] catalyst. The only oxidation product was 3,3′,5,5′-tetra-tert-butyl-4,4′-diphenoquinone. The oxidation reaction of BOH did not proceed over the Cu(II)-PVP catalyst by itself; it needed promotion by addition of an inorganic base such as KOH in the solvent. The added KOH had the role of generating the corresponding phenolate anion by dissociating the BOH mol. The turnover number [mol of absorbed O₂ per unit time and unit mol of Cu(II)] with the basic Cu(II)-PVP catalyst in the BOH oxidation passed through a maximum with the variation in the pyridine/Cu(II) mol ratios (ligand ratio). The reaction order was dependent on the Cu(II) concentration and changed from 2nd- to 1st-order with an increase in the Cu(II) amount in the Cu(II)-PVP. The kinetics show that the rate-determining step in the BOH oxidation catalyzed by the basic Cu(II)-PVP changed from the reoxidation of the dinuclear Cu(I) complex by O₂ to the BOH oxidation by the mononuclear Cu(II) complex with an increase in the Cu(II) amount in the Cu(II)-PVP catalyst. The catalytic activity of the Cu(II)-PVP catalyst remained almost constant and it could be reused.

Journal of Catalysis published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is C20H28B2O4S2, Related Products of copper-catalyst.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Kozak, N. V. published the artcileThe effect of 3d-metal chelates on the molecular structure microheterogeneity of an incompatible linear polymer-net polymer system, SDS of cas: 14284-06-1, the publication is Theoretical and Experimental Chemistry (2005), 41(4), 265-270, database is CAplus.

The influence of the nature of the central ion [Cu(2+), Cr(3+), Fe(3+)] of the chelate compound on the possibility of interaction of the metal-containing modifier with one or both of the components of the incompatible PU/PMMA system was studied by ESR. It was shown by low-angle x-ray diffraction that the change in the degree of microheterogeneity of the semi-IPN correlated with the characteristics of complex forming metal and the polymer matrix.

Theoretical and Experimental Chemistry published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, SDS of cas: 14284-06-1.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Lipatova, T. E. published the artcileEffect of copper β-diketone complexes on properties of polyurethane prepared using 4,4′-diphenylmethane diisocyanate and a poly(ethylene) glycol with molecular weight 2000, Product Details of 0, the publication is Kompozitsionnye Polimernye Materialy (1979-1996?) (1984), 19-22, database is CAplus.

Cu bis(Et acetoacetate) (I) [14284-06-1], used as a catalyst in the synthesis of p-MDI-polyethylene glycol polyurethane  [9048-57-1], remained in the polymer after polymerization and led to structural modification and improved thermal stability. I acted as a coordinative crosslinking agent in the polyurethane system. The polyurethane containing I underwent 5% weight loss at 275° compared with 210° in the absence of I.

Kompozitsionnye Polimernye Materialy (1979-1996?) published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, Product Details of 0.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Lipatova, T. E. published the artcileCatalytic activity of copper β-diketonates in the formation of urethanes, HPLC of Formula: 14284-06-1, the publication is Doklady Akademii Nauk SSSR (1975), 220(4), 873-6 [Phys chem], database is CAplus.

Of 11 Cu dicarbonyl chelates tested for catalytic activity in the reaction of PhNCO with MeOH the 3 most active were (RCOCH2COR1)2Cu with R, R1 = EtO, Me; Me3C, Me; and Me3C, Me3C. The effect of the ligand on the π character of the Cu-ligand bond was the main factor. A correlation between reaction rate and ligand basicity was also found.

Doklady Akademii Nauk SSSR published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, HPLC of Formula: 14284-06-1.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Voropaeva, N. L. published the artcileFormation of complexes of oligomeric polyethylene glycols of various molecular weights with copper β-diketonates, Recommanded Product: Copper(II) ethylacetoacetate, the publication is Vysokomolekulyarnye Soedineniya, Seriya A (1983), 25(11), 2320-7, database is CAplus.

Visible and UV spectrophotometry revealed that oligomeric polyethylene glycol (I) forms a 1:1 complex with Cu(II) ethyl acetoacetate via coordination with both Cu and chelate group of β-diketo ester moiety. Stability constant of the complex decreases as mol. weight of I increases from 400 to 4000. Interaction between I and β-diketo ester moiety was studied to elucidate the mechanism of catalytic activity of the former in preparation of I-based polyurethanes.

Vysokomolekulyarnye Soedineniya, Seriya A published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is C7H8BNO4, Recommanded Product: Copper(II) ethylacetoacetate.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Kozak, Nataly published the artcileFormation of nanostructures in multi component systems based on organic polymer and coordination metal compound, Recommanded Product: Copper(II) ethylacetoacetate, the publication is Macromolecular Symposia (2006), 247-260, database is CAplus.

Structuring of polyurethane (PU) (from PPG, TDI, and trimethylolpropane) networks is analyzed under influence of transition metal coordination compounds: mono-ionic β-diketonates and polyheteronuclear metal-organic complexes. Formed in-situ nanostructures both organic and inorganic were found in organic polymer modified with coordination metal compound Influence of coordination junction point spatial symmetry and content of metal ion in modifier on structure and dielec. characteristics of modified PUs is analyzed using X-ray, EPR, SEM and TEM, DRS and DSC methods.

Macromolecular Symposia published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, Recommanded Product: Copper(II) ethylacetoacetate.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Lipatova, T. E. published the artcileRole of complex formation in catalysis of polyaddition reactions with isocyanates, Computed Properties of 14284-06-1, the publication is Polymeric Materials Science and Engineering (1983), 346-9, database is CAplus.

The catalytic activity of copper bis(Et acetoacetate) (I) [14284-06-1] in the polymerization of 4,4‘-diphenylmethane diisocyanate  [101-68-8] with poly(ethylene glycol) (II) [25322-68-3] decreases with the growth in II mol. mass due to the reduced concentration of OH-OH-type associates and the increased contribution of O atoms of the glycol ether groups into complex formation with I. The activating influence of I depends on the stability of its complex with glycol. The activity of amine-epoxide catalysts in isocyanate cyclotrimerization was also discussed.

Polymeric Materials Science and Engineering published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, Computed Properties of 14284-06-1.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Banait, J. S. published the artcileElectrochemical synthesis of inorganic and organometallic compounds of copper, Recommanded Product: Copper(II) ethylacetoacetate, the publication is Bulletin of Electrochemistry (1989), 5(4), 264-8, database is CAplus.

Reactions of various types of organic compounds have been carried out at Cu anode in order to explore the synthetic aspects of the electrochem. technique in inorganic chem. The isolated products have been identified by chem. anal. and IR spectral studies. Carboxylic acids yield Cu(II) carboxylates, polyhydric alcs. yield Cu(II) glycolates, monohydric alcs. yield Cu(II) glycolates and ketones yield Cu(II) glycolates and organocopper(II) compounds All these reactions have been found to proceed with almost 100% current efficiency.

Bulletin of Electrochemistry published new progress about 14284-06-1. 14284-06-1 belongs to copper-catalyst, auxiliary class Copper, name is Copper(II) ethylacetoacetate, and the molecular formula is 0, Recommanded Product: Copper(II) ethylacetoacetate.

Referemce:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4660968/,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”