Day: November 21, 2022

Lipatov, Yu. S. published the artcileEffect of metal chelates on phase separation in semi-interpenetrating polymer networks based on crosslinked polyurethane and linear poly(methyl methacrylate), Recommanded Product: Copper(II) ethylacetoacetate, the publication is Dopovidi Natsional’noi Akademii Nauk Ukraini (2005), 134-141, database is CAplus.

The effect of chelates of iron, copper, and chromium on the interface region and the phase separation in semi-interpenetrating polymer networks (SIPN) based on crosslinked polyurethane and linear PMMA was investigated. The degree of phase separation depends on the presence of chelates. Slowing of the phase separation in SIPN in the presence of β-diketonates of iron and copper was observed

Dopovidi Natsional’noi Akademii Nauk Ukraini 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”

Kozak, N. V. published the artcileEffect of Zn²⁺, Cu²⁺, and Ni²⁺ ions on the structure of crosslinked segmented polyurethanes, Recommanded Product: Copper(II) ethylacetoacetate, the publication is Vysokomolekulyarnye Soedineniya, Seriya A i Seriya B (2000), 42(12), 2104-2110, database is CAplus.

Segmented PU crosslinked with Ni²⁺, Cu²⁺, and Zn²⁺ ions were synthesized. The effect of these ions on the structure of the synthesized polymers was studied by EPR spectroscopy, with 2,2,6,6-tetramethyl- 1-piperidinyloxy and copper Et acetoacetate used as spin probes. The different effect of these ions is connected to differences in their electronic structure. This effect not only governs formation of a complex crosslink of a certain symmetry in PU, but also characterizes the capability of metal ions for addnl. complexation with the functional groups of a polymer as follows from variations in the correlation time of a nitroxyl radical and in the electron spin characteristics of copper Et acetoacetate.

Vysokomolekulyarnye Soedineniya, Seriya A i Seriya B 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”

Sato, Tsuneyuki published the artcileMetal-containing initiator systems. 30. Vinyl polymerization initiated with bis(ethyl acetoacetato)copper(II) and maleimide, Computed Properties of 14284-06-1, the publication is Journal of Macromolecular Science, Chemistry (1981), A16(5), 1017-32, database is CAplus.

Some electron-accepting compounds such as maleimide (I) [541-59-3], maleic anhydride (II) [108-31-6], and tetracyanoquinodimethane [1518-16-7] showed pronounced accelerating effects on vinyl polymerization initiated with metal chelates. The polymerization of Me methacrylate (III) [80-62-6] initiated with bis(Et acetoacetato)copper(II) (IV) [14284-06-1] and I was studied kinetically in C₆H₆. The overall activation energy of the polymerization was 11.5 kcal/mol. This value was much lower than that (17.6 kcal/mol) for the polymerization of III with IV alone. The polymerization rate (R_p) was expressed as R_p = k[I]^1/2[IV]^1/2[III]. The first-order dependence of R_p on the monomer concentration indicated that the monomer had no participation in the initiation step, in contrast with polymerization in the absence of I (where a monomer concentration dependence of 1.4th order was observed). Electron spectroscopic studies revealed that a I–IV complex was formed. The ligand radical, an acetylcarboethoxymethyl radical, was trapped by 2-methyl-2-nitrosopropane in the reactions of IV with I and with II in benzene. From these results the mechanism of the initiation of polymerization was discussed.

Journal of Macromolecular Science, 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, 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”

Nizel’skii, Yu. N. published the artcileProton NMR study of the complexing of cobalt(II) and copper(II) β-diketonates with poly(ethylene glycols) and monoethyl ether of ethylene glycol, Name: Copper(II) ethylacetoacetate, the publication is Teoreticheskaya i Eksperimental’naya Khimiya (1983), 19(5), 636-40, database is CAplus.

The complexation of CuL₂ (HL = Et acetoacetate) and M(acac)₂ (M = Be, Co; Hacac = acetylacetone) with poly(ethylene glycol) (mol.weight = 400-4000), ethylene glycol monoethyl ether, and diethylene glycol di-Et ether was studied by ¹H NMR spectra. The interaction of the glycols to the metals is through the hydroxy groups. The ether O are not involved in coordination.

Teoreticheskaya i Eksperimental’naya 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, Name: Copper(II) ethylacetoacetate.

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

Nekhoroshkov, V. P. published the artcileEffect of the structure of β-dicarbonyl compounds of copper(II) and reaction conditions on liquid-phase oxidation of dibenzyl ether, SDS of cas: 14284-06-1, the publication is Kataliz i Katalizatory (1984), 94-8, database is CAplus.

Cu complex catalysts (I; R, R¹, R² = CF₃, H, CF₃; Me, H, CF₃; Me, H, Me; Me, H, Me₃C; Ph, H, Ph; Me₃C, H, Me₃C; CF₃, Ph, OEt; etc.) were tested in the oxidation of (PhCH₂)₂O. Linear relations were found between the rate of product formation and the charge on Cu. The selectivity for hydroperoxide formation increased with the charge on Cu, the selectivity for BzH showed the opposite trend, and the selectivity for BzOH was not appreciably affected by the charge on Cu. The effects of concentration, temperature, and space velocity were also examined

Kataliz i Katalizatory 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”

Samath, S. Abdul published the artcileReactions of coordinated β-ketoesters. A new route for the synthesis of 4-substituted-3-methyl/phenyl-1-phenyl pyrazol-5-ones via a metal chelated stable intermediate, Formula: 0, the publication is Polyhedron (1993), 12(10), 1265-7, database is CAplus.

Unsubstituted and γ-substituted Cu(II) complexes of β-ketoesters on treatment with phenylhydrazine give ring-rearranged chelate intermediates, which on subsequent demetalation afford the new 4-halo/phenylamido-3-methyl/phenyl-1-Ph pyrazol-5-ones.

Polyhedron 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”

Nizel’skii, Yu. N. published the artcileRole of alcohol self-association in the kinetics of urethane formation catalyzed by copper β-diketonates, Recommanded Product: Copper(II) ethylacetoacetate, the publication is Zhurnal Organicheskoi Khimii (1980), 16(3), 495-505, database is CAplus.

Kinetic and spectral studies indicated that the bis(Et acetoacetato)copper (I)-catalyzed reaction of PhNCO with excess MeOH involved complexation of I with the monomeric and self-associated alc. The associated alc. was more reactive than the monomer in both the catalytic and noncatalytic processes. The activation parameters showed that the transition-state structure played an important role in the acceleration of the reaction.

Zhurnal Organicheskoi Khimii 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”

Nizel’skii, Yu. N. published the artcileStudy of polyurethane formation catalyzed by copper β-diketonates, Synthetic Route of 14284-06-1, the publication is Vysokomolekulyarnye Soedineniya, Seriya A (1979), 21(3), 640-5, database is CAplus.

Polyurethane formation from 4,4′-diphenylmethane diisocyanate [101-68-8] and diethylene glycol (I) [111-46-6] in the presence of Cu β-diketone complex catalysts proceeds via a coordination mechanism and depends to a significant degree on substituents on the ligands. The catalytic effect is associated with complexation with I. Activation of side reactions is not observed in the presence of the β-diketone complexes. The polyurethanes formed using these catalysts are more heat resistant than those formed in their absence. The catalytic activity of the Cu β-diketones is related to their Taft substituent constants

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 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”

Nizel’skii, Yu. N. published the artcileEffect of oligomeric glycol on the catalytic activity of copper β-diketone complexes during urethane formation, Synthetic Route of 14284-06-1, the publication is Ukrainskii Khimicheskii Zhurnal (Russian Edition) (1983), 49(5), 542-6, database is CAplus.

Kinetic data for urethane formation in isocyanate and diisocyanate systems with alkanol, glycol, and oligomeric glycol in the presence of CuL₂ complexes (L = β-diketone) showed that catalyst reactivity depended on ligand structure and decreased in the order (of L): Me₃CCOCH₂COCMe₃ > CH₃COCH₂CO₂Et > PhCOCH₂COCH₃ > CH₃COCH₂COCH₃ > CF₃COCH₂COCH₃ > CF₃COCH₃COCF₃. The effect of ligand structures on catalyst activity was weakened in systems containing an oligomeric glycol. This weakening of the ligand structure effect is discussed in terms of H bonding and the formation of intra- and intermol. complexes by oligomeric glycols.

Ukrainskii Khimicheskii Zhurnal (Russian Edition) 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”

Koval, L. I. published the artcileElectron and X-ray photoelectron spectra and structure of dicarbonyl complex of copper (II) with massive linear and branched alkyl substituents, Name: Copper(II) ethylacetoacetate, the publication is Ukrainskii Khimicheskii Zhurnal (Russian Edition) (2007), 73(1-2), 3-9, database is CAplus.

β-Dicarbonyl complexes of Cu (II), which had hot been studied before, were studied, in comparison with some known complexes, in solutions and in solid state by a set of spectral methods (XPS, visible electron absorption spectroscopy, diffuse reflection spectroscopy, and vibration spectroscopy). Electronic absorption spectra were analyzed in organic solvents which different in polarity and coordination ability. The statistical electron-spectroscopic data anal. was performed by Peak Fit Module (PFM) program. Basing on an anal. of the spectroscopic data obtained, the coordination unit [CuO₄] in the compounds studied has a square-planar-structure.

Ukrainskii Khimicheskii Zhurnal (Russian Edition) 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, Name: Copper(II) ethylacetoacetate.

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