Tag: M.W=300-350

Molotkova, I. A. published the artcileIce-forming activity of copper acetylacetonate with addition of the copper complex of acetoacetic ester, HPLC of Formula: 14284-06-1, the publication is Trudy Glavnoi Geofizicheskoi Observatorii im. A.I. Voeikova (1991), 44-8, database is CAplus.

The effect was studied of the different amounts of addition of Cu complex of acetoacetic ester (P-9) to Cu acetylacetonate (P-8) on the ice-forming activity of P-8 over the temperature range -10 to -20°. The P-8: P-9 ratio was maintained at 3:1, 1:1, 1:3, and 1:6. The total number of ice crystals formed (In) increased, in mixtures containing ≤75% P-9, at temperatures more than -15°. The addition of a hygroscopic component improved the yield of ice crystals formed by 30 times.

Trudy Glavnoi Geofizicheskoi Observatorii im. A.I. Voeikova 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”

Markov, P. published the artcileInfluence of ultraviolet light on some copper chelates of β-dicarbonyl compounds. Spectral evidence for a photoactivated metallotropy, Recommanded Product: Copper(II) ethylacetoacetate, the publication is Journal of Organometallic Chemistry (1979), 173(2), 211-20, database is CAplus.

UV irradiation of I (R, R¹ = e.g., Me, OEt; PhCH₂, OEt; Ph, Me) (21 compounds) causes a rapid shift of the chelate-enolate-carbeniate equilibrium to the enolate and carbeniate forms. Practically the same amounts of the metallotropic forms were detected by IR spectra after 8 h of UV irradiation and after 100 days without UV irradiation

Journal of Organometallic 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”

Pavlov, V. A. published the artcileStudy of optically active mixed-ligand chelate complexes. 7. Mixed-ligand complexes as models of intermediate complexes in enantioselective hydrogenation catalysis, Application In Synthesis of 14284-06-1, the publication is Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya (1980), 545-51, database is CAplus.

The enantioselective hydrogenation of (Me₂CO)₂CH₂ (I) and MeCOCH₂CO₂Et (II) on Cu, Ni or Co catalysts modified by optically active aromatic amino acids was examined A mechanism was proposed on the basis of stereochem. principles found for complexes of these metals with the amino acid and I (or II) as ligands.

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, Application In Synthesis of 14284-06-1.

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

Raman, N. published the artcileSynthesis of 2,4-dinitrophenylhydrazone derivatives of Co(II), Cu(II) and Ni(II) complexes of β-diketones/β-ketoesters and their antimicrobial activities, Category: copper-catalyst, the publication is Asian Journal of Chemistry (2002), 14(3-4), 1261-1264, database is CAplus.

2,4-Dinitrophenylhydrazone derivatives of Co(II), Ni(II) and Cu(II) complexes were synthesized and characterized by elemental anal., molar conductance, magnetic susceptibility and spectral data. The antimicrobial activities of the complexes were studied.

Asian Journal of 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, Category: copper-catalyst.

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

Maijs, L. published the artcileFar-infrared spectra of acetylacetonates, Application of Copper(II) ethylacetoacetate, the publication is Latvijas PSR Zinatnu Akademijas Vestis, Kimijas Serija (1975), 463-5, database is CAplus.

The ir spectra (200-500 cm-1) of M(aa)n (M = Be, Mg, Zn, Cu, Ni, Co, VO, Al, Ga, In, Cr, Mn, and Fe; aa = acetylacetonate enol anion) as well as Al(aa)3, Al(aa)2(ae), Al(aa)(ae)2, and Al(ae)3 (ae = ethyl acetoacetate enol anion) were obtained. The frequencies of absorption bands are given; the frequencies of the bands at 450-530 cm-1 depend on M or the M-O bond character.

Latvijas PSR Zinatnu Akademijas Vestis, Kimijas Serija 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, Application of Copper(II) ethylacetoacetate.

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

Krammer, B. published the artcileA novel screening assay for hydroxynitrile lyases suitable for high-throughput screening, Computed Properties of 14284-06-1, the publication is Journal of Biotechnology (2007), 129(1), 151-161, database is CAplus and MEDLINE.

Hydroxynitrile lyases (Hnls) are important biocatalysts for the synthesis of optically pure cyanohydrins, which are used as precursors and building blocks for a wide range of high price fine chems. Although two Hnl enzymes, from the tropical rubber tree Hevea brasiliensis and from the almond tree Prunus amygdalus, are already used for large scale industrial applications, the enzymes still need to be improved and adapted to the special demands of industrial processes. In many cases directed evolution has been the method of choice to improve enzymes, which are applied as industrial biocatalysts. The screening procedure is the most crucial point in every directed evolution experiment Herein, we describe the successful development of a novel screening assay for Hnls and its application in high-throughput screening of Escherichia coli mutant libraries. The new assay allows rapid screening of mutant libraries and facilitates the discovery of improved enzyme variants. Hnls catalyze the cleavage of cyanohydrins to hydrocyanic acid and the corresponding aldehyde or ketone. The enzyme assay is based on the detection of hydrocyanic acid produced, making it an all-purpose screening assay, without restriction to any kind of substrate. The gaseous HCN liberated within the Hnl reaction is detected by a visible colorimetric reaction. The facile, highly sensitive and reproducible screening method was validated by identifying new enzyme variants with novel substrate specificities.

Journal of Biotechnology 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”

Mun, Yan Un published the artcileMetal-containing initiator systems. 35. Synthesis of block copolymers by using the binary initiator system cobaltocene/bis(ethyl acetoacetato)copper(II), Name: Copper(II) ethylacetoacetate, the publication is Makromolekulare Chemie (1984), 185(8), 1507-16, database is CAplus.

Polymerization of methyl methacrylate (I) [80-62-6] with the binary initiator system cobaltocene  [1277-43-6]–bis(Et acetoacetato)copper(II) [14284-06-1] was studied kinetically at 25° in acetonitrile. The relationship between yield and mol. weight of the resulting I polymer was suggestive of a living polymerization character in this system. The synthesis of block copolymers [25034-86-0] of I with styrene (II) was attempted by adding II as the second monomer to the polymerization system of I. The block copolymer was formed in a yield of 20% where I was polymerized for 1 day, while the yield went up to 80% when the I polymerization was carried out for 3 days. The resulting block copolymer was characterized by IR spectroscopy and gel-permeation chromatog.

Makromolekulare 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, Name: Copper(II) ethylacetoacetate.

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

Mun, Yang Un published the artcileMetal-containing initiator systems. 34. Polymerization of vinyl monomers initiated by the binary system cobaltocene/bis(ethyl acetoacetato)copper(II), Related Products of copper-catalyst, the publication is Makromolekulare Chemie (1984), 185(8), 1493-505, database is CAplus.

The effect of some metallocenes such as ferrocene  [102-54-5], nickelocene  [1271-28-9], and cobaltocene (I) [1277-43-6], on the vinyl polymerization initiated with bis(Et acetoacetato)copper(II) (II) [14284-06-1] was investigated. I exerted a markedly accelerating effect on the polymerization of methyl methacrylate (III) [80-62-6] with II. The polymerization of III with I–II system at 50° was affected by the solvent used. The results of copolymerization of III with styrene and the effect of hydroquinone on the polymerization of III with I–II showed that the polymerization proceeds via a radical mechanism. The polymerization of III with I–II was studied kinetically in acetone. The overall activation energy of the polymerization was calculated to be 20.6 kcal/mol. This value was somewhat higher than that (17.6 kcal/mol) obtained for the polymerization of III with II alone. The polymerization rate (R_p) is represented by the equation: R_p = k[I]^0.5[II]^0.2[III]^1.3. The high order in monomer concentration suggests a participation of the monomer in the initiation process. This is supported by the examination of the ESR spectrum of the system I–II–III-acetone, where reduction of Cu(II) to Cu(I) occurs. To elucidate the initiation mechanism, the spin trapping technique was applied to the system I–II-Me acrylate. From these results, an initiation mechanism for the binary initiator system I–II is proposed and discussed.

Makromolekulare 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, 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, 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”

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”