Tag: M.W=300-350

Maurya, R. C. published the artcileMixed-ligand complexes of copper(II)-β-diketonate and β-diketoesters with heterocyclic nitrogen donors involving benzimidazole nucleus, Synthetic Route of 14284-06-1, the publication is Journal of the Institution of Chemists (India) (1997), 69(3), 89-91, database is CAplus.

A new series of mixed ligand complexes [Cu(L-L)₂L’₂] where L-L = acac, methylacetoacetate, ethylacetoacetate, and L’ = benzimidazole, 2-methylbenzimidazole were isolated in the solid state. The complexes were characterized by elemental anal.,molar conductance, magnetic measurements, TGA, ESR, electronic and IR spectral studies. A distorted octahedral structure is proposed for these complexes.

Journal of the Institution of Chemists (India) 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, Synthetic Route of 14284-06-1.

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

Kondrat’ev, P. N. published the artcileReaction of polyfluorinated copper(II) β-diketonates and β-keto esterates with hydrazines, Safety of Copper(II) ethylacetoacetate, the publication is Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya (1990), 640-5, database is CAplus.

Treating copper(II) β-diketonates I [R = Me, CF₃, CF₃(CF₂)₅; R¹ = Me] with NH₂NH₂.2HCl in H₂O containing NaOH gave 72-86% pyrazoles II (same R, R¹; R² = H). Similar reaction of I (R = R¹ = CF₃) gave 20% II (R = R¹ = CF₃; R² = H). Reaction of β-keto esterates I [R = CHF₂, CF₃, CF₃(CF₂)₃, Me, H(CF₂)₄; R¹ = OEt] with R²NHNH₂.xHCl (R² = H, x = 2; R² = Ph, x = 1) in EtOH containing NaOH gave 20-61% pyrazoles II (same R; R¹ = OH; R² = H, Ph). The structure of II [R = H(CF₂)₄, R¹ = OH, R² = Ph] was determined by x-ray crystallog.

Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya 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, Safety of Copper(II) ethylacetoacetate.

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

Thankarajan, N. published the artcileAminolysis and transesterification reactions on bis(ethyl acetoacetato)copper(II), Safety of Copper(II) ethylacetoacetate, the publication is Journal of the Indian Chemical Society (1981), 58(7), 650-1, database is CAplus.

Aminolysis of the Cu(II) chelate of Et acetoacetic is a convenient and general method for preparing the Cu(II) chelates of acetoacetanilides. The β-ketoester chelate also undergoes facile transesterification reaction leading to Cu(II) chelates of other β-ketoesters, some of which are otherwise difficult to prepare The complexes were characterized through their phys. constants, anal. data, and IR spectra.

Journal of the Indian Chemical Society 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 C13H26N2, Safety of Copper(II) ethylacetoacetate.

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

Baidina, I. A. published the artcileCrystal and molecular structure of trans-bis(benzoyltrifluoroacetonato)copper(II), trans-Cu(C₆H₅COCHCOCF₃)₂, SDS of cas: 14284-06-1, the publication is Koordinatsionnaya Khimiya (1986), 12(4), 543-8, database is CAplus.

trans-CuL₂ (HL = benzoyltrifluoroacetone) was prepared from CuCl₂.2H₂L and HL in aqueous alc. neutralized to pH 6. trans-CuL₂ is monoclinic, space group P2₁/n, with a 17.008(6), b 5.654(2), c 10.366(2) Å, β 92.93(2)°, Z = 2, R_w = 0.041, B = 0.067 for 2596 reflections with I > 2σ(I). The square planar Cu complex has an O₄ coordination node. The energy of intermol. van der Waals interaction was calculated for CuL₂ and other Cu β-diketonate complexes. PtL₂ is orthorhombic, with a 8.1, b 10.6, c 11.5 Å, Z = 2.

Koordinatsionnaya Khimiya 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”

Rosenberg, Douwe published the artcileChemotherapeutic nitroheterocycles, XXVI. 5-Nitro-2-thiazolylpyrazoles and 5-nitro-2-thiazolylisoxazoles from 1,3-dicarbonyl compounds of the nitrothiazole series, COA of Formula: 0, the publication is Justus Liebigs Annalen der Chemie (1976), 13-21, database is CAplus.

5-Nitro-2-thiazolecarbonyl chloride (I) reacted with copper chelates II (R = EtO, Me, Ph, 4-ClC6H4, 2-furyl, 2-thienyl) to give 65-99% 1,3-dicarbonyl compounds III with a 5-nitro-2-thiazolyl moiety. III (R = Me, Ph) reacted with substituted hydrazines or hydroxylamine H2NXH (X = NH, NMe, NCH2CH2OH, NPh, O) to give 26-96% the title pyrazoles IV and (or V) (X = NH or substituted NH) or isoxazoles IV and(or) V (X = O). Some III have good antimicrobial activity (no data), but are very toxic and corrosive to the skin.

Justus Liebigs Annalen der Chemie 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”

Petkov, I. published the artcileUV and IR study of gamma-ray and fast electron beam initiated prototropic and metallotropic tautomerization of some β-dicarbonyl compounds and their Cu chelates in solution and in polymer (PVC) film, Recommanded Product: Copper(II) ethylacetoacetate, the publication is Radiation Physics and Chemistry (1995), 45(1), 121-30, database is CAplus.

The radiation induced keto-enol and chelate-carbeniate tautomerization of some β-dicarbonyl compounds and their copper complexes is studied in solution and in polymer (PVC) film. The samples are subjected to irradiation using a ⁶⁰Co source. The effects of the kGy doses in air on the percentage of the enol or chelate forms are investigated with UV- and IR-spectral methods. These radiation induced processes are discussed in terms of the mechanism proposed previously for the photoinduced ketonization and metallotropy of β-dicarbonyl compounds

Radiation Physics and 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, Recommanded Product: Copper(II) ethylacetoacetate.

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

Johnson, P. R. published the artcileElectronic spectra of copper(II) β-ketoenolates. Intraligand and charge transfer transitions, Category: copper-catalyst, the publication is Journal of Molecular Structure (1975), 29(1), 97-103, database is CAplus.

The electronic spectra in (MeOH) of the Na salts and Cu(II) complexes of 13 β-diketones are reported within the energy range 25-48 kkaysers. Spectra of the Na salts of ligands with alkyl substituents exhibit 1 band which is assigned to the π3→π4 intraligand transition. Where aryl substituents are present, an addnl. benzenoid band is observed The spectra of the Cu complexes exhibit 2 bands whether aryl substituents are present or not. The band of lower energy is assigned to the π3→π4 transition and the band of higher energy to the σL→3dxy charge transfer transition. Intensity relations suggest that, where aryl substituents are present, the benzenoid band is superimposed on the charge transfer band. The observed transition energies exhibit a good level of agreement with those predicted by Hueckel MO calculations Comparison of the π3→π4 transition energies of the Cu complexes with those available for the β-ketoenolates of other metal ions supports indications from ESR spectra that there is very little π-orbital overlap in the Cu-O bonds.

Journal of Molecular Structure 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, Category: copper-catalyst.

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”

Banait, J. S. published the artcileElectrochemical reactions at sacrificial electrodes: part IV – Electrochemical synthesis of organocopper compounds, Formula: 0, the publication is Bulletin of Electrochemistry (1987), 3(3), 237-9, database is CAplus.

Reactions of nitromethane, nitroethane, acetonitrile, cyanoacetamide, Et acetoacetate, malononitrile, di-Et malonate and Et cyanoacetate were carried out at Cu anode. All these compounds except Et acetoacetate yielded organocopper compounds Et acetoacetate reacts at Cu anode through its enolic form. The products were identified by chem. anal. and IR. Current efficiencies of all these reactions were close to 100%.

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, Formula: 0.

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