Tag: M.W=300-350

Nizel’s’kii, Yu. M. published the artcileLinear and crosslinked polyurethanes containing nanostructuring coordination centers, Safety of Copper(II) ethylacetoacetate, the publication is Nanosistemi, Nanomateriali, Nanotekhnologii (2007), 5(2), 435-443, database is CAplus.

The in situ polymer-immobilized mono-, bi- and polyheteronuclear metal complexes are obtained in homogeneous polymers based on linear and cross-linked polyurethanes. Anal. of both EPR-spectra shape and copper-ion electron-spin parameters for isolated and immobilized mono- and polyheteronuclear metal compounds confirms a complexation between the modifier and electron-donating groups in linear and cross-linked polyurethanes. These complexes form the coordination linkages of macrochains in a polymer matrix. As revealed, the immobilization of monoionic copper ethylacetoacetate does not disturb tetragonal symmetry (D_2h or D_4h) of its chelate node. On the contrary, introduction of the polyheteronuclear metal complex into the polymer matrix is accompanied with essential distortion of the initial complex EPR spectra. Obtained systems are described as bottom-up metal-containing nanosystems, which include nanoscale structures of both organic nature (self-similar microheterogeneities typical for segmented polyurethanes) and metal-containing co-ordination junction points within the microphase or at the boundary.

Nanosistemi, Nanomateriali, Nanotekhnologii 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”

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”

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”

Ma, Kai published the artcileCoupling reaction of dimethyl succinate and ethylene carbonate over metal ethyl acetoacetate complexes, Synthetic Route of 14284-06-1, the publication is Jingxi Huagong (2013), 30(6), 624-627, database is CAplus.

A new technol. of coupling reaction was studied, by which the simultaneous synthesis of poly (ethylene glycol succinate) oligomers and di-Me carbonate (DMC) was realized by the coupling reaction of ethylene carbonate (EC) and di-Me succinate (DMSu) over various metal Et acetoacetate complexes. Zn (EAA)₂ as catalyst had the highest catalytic activity for the coupling reaction. The preferable reaction conditions were as follows: reaction temperature 205-215°C, molar ratio of EC to DMSu 4, molar ratio of catalyst to the total mass of EC and DMSu 0.001, reaction time 1 h. Under such conditions, the yield of DMC was 52.3%, and the intrinsic viscosity [η] of poly (ethylene glycol succinate) oligomer was 0.1174 dL/g.

Jingxi Huagong 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”

Naruta, Yoshinori published the artcileCopper-catalyzed double cyclization reaction of azidoquinones: one-step synthesis of dihydropyrroloindoloquinones and related quinolinoquinones, Recommanded Product: Copper(II) ethylacetoacetate, the publication is Journal of Organic Chemistry (1987), 52(18), 3956-67, database is CAplus.

Intramol. cyclization of azido(pentadienyl)quinone I (R = H) has been examined in the presence of metal salts, e.g., ML_n (M = Cu, Mn, Co, etc.; L = acetylacetonato). Copper or CuL₂ exhibited the highest catalytic activity both to the decomposition of the azide and to the formation of the corresponding dihydropyrroloindoloquinone II (R = H) which was obtained in 58% yield in one step. The related azido(hexadienyl)quinones gave the corresponding quinolinoquinone derivatives in moderate yields. Thus, pyrolysis of hexadienylquinone derivative I (R = Me) in benzene in the presence of CuL₂ afforded 27% quinolinoquinone. The double cyclization reaction proceeds with extremely high regio- and stereoselectivity, and the generality was established. Quinonoid structures and the presence of a conjugated dienyl side chain at the proximal position to an azide group are essential for the completion of this double cyclization reaction. The role of the copper catalyst to the cyclization reaction is also discussed.

Journal of Organic 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”

Maruyama, Kazuhiro published the artcileCopper(II)-catalyzed cyclization of azidoalkadienylquinones. Stereoselective formation of dihydropyrroloindoloquinones and the related quinolinoquinone, Synthetic Route of 14284-06-1, the publication is Chemistry Letters (1987), 97-100, database is CAplus.

Azidoalkadienylquinones (e.g., I; n = 1,2) cyclized in the presence of Cu(acac)₂ (acac = acetylacetonate) to stereoselectively give up to 48% dihydropyrroloindolediones and -quinolinediones (e.g., II; n = 1,2). In the absence of Cu(acac)₂ cyclization did not occur. Evaluation of other metal salts and ligands showed Cu(acac)₂ had the best catalytic activity.

Chemistry Letters 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”