Tag: 477.6473

Stable and reactive diacetyliminoxyl radical in oxidative C-O coupling with β-dicarbonyl compounds and their complexes was written by Budnikov, Alexander S.;Krylov, Igor B.;Lastovko, Andrey V.;Paveliev, Stanislav A.;Romanenko, Alexander R.;Nikishin, Gennady I.;Terent’ev, Alexander O.. And the article was included in Organic & Biomolecular Chemistry in 2021.Computed Properties of C10H2CuF12O4 This article mentions the following:

In the present study, the unusually stable diacetyliminoxyl radical I was presented as a ”golden mean” between transient and stable unreactive radicals. It was successfully employed as a reagent for oxidative C-O coupling with β-dicarbonyl compounds II (R = Me, Bu, chloro, benzyl) and R¹C(O)CH(R²)C(O)R³ (R¹ = Me, phenyl; R² = Me, allyl, Ph, benzyl, chloro; R³ = Me, Ph, ethoxy). Using this model radical the catalytic activity of acids, bases and transition metal ions in free-radical coupling was revealed. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Computed Properties of C10H2CuF12O4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, inexpensive and low toxicity. Copper nanoparticles can also catalyze the coupling reaction of nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.Computed Properties of C10H2CuF12O4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Slow Magnetic Relaxation in Ladder-Type and Single-Strand 2p-3d-4f Heterotrispin Chains was written by Yang, Meng;Xie, Jing;Sun, Zan;Li, Licun;Sutter, Jean-Pascal. And the article was included in Inorganic Chemistry in 2017.Application of 14781-45-4 This article mentions the following:

Ladder-type and chain 2p-3d-4f complexes based on a bridging nitronyl nitroxide radical, namely, [LnCu(hfac)₅(NIT-Ph-p-OCH₂trz)]·0.5C₆H₁₄ [Ln = Y (1a), Dy (1b)] and [LnCu(hfac)₅(NIT-Ph-p-OCH₂trz)] [Ln = Y (2a), Dy (2b); NIT-Ph-p-OCH₂trz = 2-[4-[(1H-1,2,4-triazol-1-yl)methoxy]phenyl]-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide; hfac = hexafluoroacetylacetonate] were successfully achieved through a 1-pot reaction of the NIT-Ph-p-OCH₂trz radical with Cu(hfac)₂ and Ln(hfac)₃·2H₂O. Complexes 1a and 1b feature a ladder-like structure, where the rails are made of Ln(III) and Cu(II) ions alternatively bridged by nitronyl nitroxide and the triazole units while the NIT-Ph-p-OCH₂trz moieties act as the rungs of the ladder. Complexes 2a and 2b consist of 1D nitronyl nitroxide bridged Ln coordination polymers with dangly Cu(II) units connected to the triazole moieties. All of compounds exhibit ferromagnetic NIT-Dy and/or NIT-Cu interactions. Both Dy derivatives (1b and 2b) show frequency-dependent out-of-phase magnetic susceptibility signals in a zero field indicating slow magnetic relaxation behavior. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Application of 14781-45-4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross-coupling reaction in organic synthesis. Copper nanoparticles can also catalyze the coupling reaction of nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.Application of 14781-45-4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Two copper complexes based on nitronyl nitroxide with different halides: structures and magnetic properties was written by Wang, Xiang-Lan;Li, Yuan-Xia;Yang, Shuai-Liang;Zhang, Chen-Xi;Wang, Qing-Lun. And the article was included in Journal of Coordination Chemistry in 2017.Safety of copper(ii)hexafluor-2,4-pentanedionate This article mentions the following:

Complexes based on different halogen-substituted nitronyl nitroxide radicals and Cu(II), Cu₃(hfac)₆(NIT-Ph-F)₂ (1) and Cu₃(hfac)₆(NIT-Ph-Cl)₂ (2) (hfac = hexafluoroacetylacetonate; NIT-Ph-F = 2-(4′-fluorophenyl)-4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide; NIT-Ph-Cl = 2-(4′-chlorphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide), were synthesized and characterized structurally and magnetically. X-ray crystal structure analyses show that 1 and 2 have similar centrosym. five-spin structures consisting of three Cu(II) ions bridged by two nitroxide ligands. The Cu(II) is coordinated by six oxygens to form an octahedron, while the five coordination of the terminal Cu(II) ion is square pyramidal. Magnetic measurements reveal strong antiferromagnetic interactions between Cu(II) ions and radicals in 1 (J = -38.9 cm^-1) and weak antiferromagnetic interactions between Cu(II) ions and radicals in 2 (J = -1.23 cm^-1), which may be explained by the bond length of the Cu-O_rad (2.468(2) Å) in , which is shorter than that (2.514(2) Å) in , and the dihedral angle (73.17(1)°) of the plane O7-O8-Cu(2)-O7A-O8A with the moiety O5-N1-C11-N2-O6 in 1 is smaller than (77.82(1)°) in 2. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Safety of copper(ii)hexafluor-2,4-pentanedionate).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to low toxicity and inexpensive, earth-abundant. Copper nanoparticles can catalyze the Ullmann coupling reaction in a wide range of applications.Safety of copper(ii)hexafluor-2,4-pentanedionate

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Comparative study on structural, magnetic and spectroscopic properties of four new copper(II) coordination polymers with 4′-substituted terpyridine ligands was written by Toledo, Dominique;Vega, Andres;Pizarro, Nancy;Baggio, Ricardo;Pena, Octavio;Roisnel, Thierry;Pivan, Jean-Yves;Moreno, Yanko. And the article was included in Journal of Solid State Chemistry in 2017.Electric Literature of C10H2CuF12O4 This article mentions the following:

The synthesis and characterization of four Cu(II) complexes with different terpyridyl ligands were carried out, their crystal and mol. structures determined and their magnetic and luminescent properties analyzed. The ligands used in the coordination reactions were 4′-(3-methyl-2-thienyl)-4,2′:6′,4”-terpyridine (4-stpy), -4′-(4-quinolinyl)-4,2′:6′,4”-terpyridine (4-qtpy), 4′-(4-quinolinyl)-3,2′:6′,3”-terpyridine (3-qtpy, unreported so far) and 4′-(4-cyanophenyl)-4,2′:6′,4”-terpyridine (4-cntpy); the reaction of these ligands with Cu(II)-hexafluoroacetylacetone (Cu(hfacac)₂) gives rise to coordination polymers Cu(4-stpy)(hfacac)₂ (1), Cu(4-qtpy)(hfacac)₂ (2), Cu(3-qtpy)(hfacac)₂ (3) and Cu(4-cntpy)(hfacac)₂ (4). The different location of the N atom of the outer ring is responsible for the different coordination modes. The emission spectra of CH₂Cl₂ solutions are consistent with dissociation of the complexes; the emission maxima simulate those of the free ligands. The emission of 1, 3 and 4 in the solid state is essentially quenched upon complexation with Cu(II), whereas for compound 2 an emission at 420 nm is observed The interaction between Cu centers was related with the coplanarity of terpyridine rings. Complexes 1–3 exhibit a paramagnetic behavior, while compound 4, with the smallest torsion angle between pyridine moieties, shows an antiferromagnetic behavior described by a dimeric model, with J = -4.38 cm^-1, g = 2.06 and ρ=0.07. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Electric Literature of C10H2CuF12O4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to low toxicity and inexpensive, earth-abundant. Copper nanoparticles can also catalyze the coupling reaction of phenols, thiols, xanthogenates, nitrogen-containing nucleophiles, selenium ruthenium nucleophiles and the like.Electric Literature of C10H2CuF12O4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Heterospin complex showing spin transition at room temperature was written by Tolstikov, S. E.;Artiukhova, N. A.;Romanenko, G. V.;Bogomyakov, A. S.;Zueva, E. M.;Barskaya, I. Yu.;Fedin, M. V.;Maryunina, K. Yu.;Tretyakov, E. V.;Sagdeev, R. Z.;Ovcharenko, V. I.. And the article was included in Polyhedron in 2015.Recommanded Product: copper(ii)hexafluor-2,4-pentanedionate This article mentions the following:

New nitronyl nitroxides L^Me and L^Me-CP containing a 4-methylpyridin-3-yl substituent were synthesized. The interaction of Cu(hfac)₂ with L^Me and L^Me-CP gave binuclear [Cu(hfac)₂L^Me]₂ and [Cu(hfac)₂L^Me-CP]₂·Solv (Solv = n-C₆H₁₄, n-C₁₀H₂₂, n-C₁₆H₃₄) and chain polymer {[[Cu(hfac)₂]₂L^Me₂][Cu(hfac)₂]}_∞ heterospin complexes. An important structural peculiarity of L^Me and L^Me-CP is a large dihedral angle between the planes of the O^·-N-C:N → O paramagnetic fragment and the pyridine ring: 55.2 and 56.1°, resp. The presence of a Me group in the pyridine ring of the nitroxide mol. in {[[Cu(hfac)₂]₂L^Me₂][Cu(hfac)₂]}_∞ proved favorable for spin transition at nearly room temperature In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Recommanded Product: copper(ii)hexafluor-2,4-pentanedionate).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents has turned up as an exceedingly robust synthetic tool. These ligands enable the reaction promoted in mild condition. The reaction scope has also been greatly expanded, rendering this copper-based cross-coupling attractive for both academia and industry. Recommanded Product: copper(ii)hexafluor-2,4-pentanedionate

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Tuning Magnetic Relaxation in a Tb-Nitronyl Nitroxide Complex by Using Cocrystalline Paramagnetic Complex was written by Wang, Juan-Juan;Sun, Juan;Yang, Meng;Li, Li-Cun. And the article was included in Inorganic Chemistry in 2015.Name: copper(ii)hexafluor-2,4-pentanedionate This article mentions the following:

New 2p-4f and 2p-3d-4f compounds [Tb(hfac)₃(NIT-PhNO₂)₂]·0.5C₇H₁₆ (1) and [Ln(hfac)₃(NIT-PhNO₂)₂]₂[Cu(hfac)₂(NIT-PhNO₂)₂] (Ln^III = Gd 2, Tb 3; hfac = hexafluoroacetylacetonate; NIT-PhNO₂ = 2-(p-nitrophenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) have been obtained. Complex 1 consists of mononuclear trispin [Tb(hfac)₃(NIT-PhNO₂)₂] units in which two radical ligands are ligated to the Tb(III) ion as monodentate ligands through the NO groups, while complexes 2 and 3 contain two kinds of trispin moieties, namely, [Ln(hfac)₃(NIT-PhNO₂)₂] and [Cu(hfac)₂(NIT-PhNO₂)₂]. In the [Cu(hfac)₂(NIT-PhNO₂)₂] moiety, the radicals are bonded to the copper(II) ion in the axial positions via the nitroxides. For three compounds, 1D supramol. chains are formed via the π-π stacking interactions involving the radical ligands. Magnetic investigations show that both Tb complexes exhibit slow relaxation of magnetization at low temperature; strikingly, complex 3 displays a higher energy barrier than that of 1. It represents the first example to use the paramagnetic complex to tune magnetic relaxation of 4f-based compounds In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Name: copper(ii)hexafluor-2,4-pentanedionate).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross-coupling reaction in organic synthesis. Copper nanoparticles can also catalyze the coupling reaction of phenols, thiols, xanthogenates, nitrogen-containing nucleophiles, selenium ruthenium nucleophiles and the like.Name: copper(ii)hexafluor-2,4-pentanedionate

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

A New Nitronyl Nitroxide Radical as Building Blocks for a Rare S = 13/2 High Spin Ground State 2p-3d Complex and a 2p-3d-4f Chain was written by Yao, Binling;Guo, Zhilin;Zhang, Xuan;Ma, Yue;Yang, Zhenhao;Wang, Qinglun;Li, Licun;Cheng, Peng. And the article was included in Crystal Growth & Design in 2017.Formula: C10H2CuF12O4 This article mentions the following:

A new nitronyl nitroxide radical L (L = 2-(4-(5-methyl-carbonyl-3-pyriyl)benzoxo)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) containing N-O groups and the pyridyl nitrogen group was designed and synthesized as a multidentate ligand to obtain compounds with interesting structures and magnetic properties from 3d or 3d-4f precursors. The reaction of Cu(hfac)₂ and/or Gd(hfac)₃·2H₂O (hfac = hexafluoroacetylacetonate) with L resulted in a rare S = 13/2 high spin ground state Cu^II complex [(Cu(hfac)₂)₇(L)₆] (1) and a Cu^II-Gd^III chain complex [Gd(hfac)₃Cu(hfac)₂(L)₂]_n·0.5CH₂Cl₂ (2). Single crystal X-ray diffraction studies indicate that the N-O groups of the L radicals are all axially bound to Cu^II ions in complex 1, which result in the ferromagnetic exchange between Cu^II and radicals and an S = 13/2 high spin ground state. While adding Gd(hfac)₃ units to the system of Cu(hfac)₂ and L radical, a one dimension chain structure is obtained, and there are ferromagnetic Gd^III-radical interactions and antiferromagnetic radical-radical coupling in the chain. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Formula: C10H2CuF12O4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. Copper has continued to be one of the most utilized and important transition metal catalysts in synthetic organic chemistry. Copper nanoparticles can also catalyze the coupling reaction of phenols, thiols, xanthogenates, nitrogen-containing nucleophiles, selenium ruthenium nucleophiles and the like.Formula: C10H2CuF12O4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Synthesis and structural characterization of Mn(II) and Cu(II) complexes with bis(4-(1H-imidazol-1-yl)phenyl)methanone ligands was written by Wang, Gao-Feng;Zhang, Xiao;Liu, Zhao-Rong;Wang, Yu-Chun;Jiang, Hong-Shi;Li, Mei-Zhuan;Jiao, Jiao;Ma, Hui-Xuan;Jiang, Xiu-Ping;Han, Qiu-Ping. And the article was included in Zeitschrift fuer Naturforschung, B: A Journal of Chemical Sciences in 2017.Category: copper-catalyst This article mentions the following:

Two complexes, {Mn(hfac)₂(BIPMO)}_n (1), {Cu(hfac)₂(BIPMO)}_n (2) [hfac = 1,1,1,5,5,5-hexafluoro-pentane-2,4-dionato(-), BIPMO = bis(4-(1H-imidazol-1-yl)phenyl)methanone], with the V-shaped ligands were synthesized and characterized by IR spectroscopy, elemental analyses, along with single-crystal x-ray diffraction analyses. The x-ray diffraction studies have shown that the metal ions in 1 and 2 are both six-coordinated to two nitrogen atoms of two BIPMO ligands and four oxygen atoms of two hfac ligands to form a distorted octahedral geometry. Each BIPMO ligand acts as a bridging ligand to link two adjacent metal(II) atoms to form a helical chain in the crystal structure. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Category: copper-catalyst).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to low toxicity and inexpensive, earth-abundant. Copper nanoparticles can also catalyze the coupling reaction of phenols, thiols, xanthogenates, nitrogen-containing nucleophiles, selenium ruthenium nucleophiles and the like.Category: copper-catalyst

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Ph(i-PrO)SiH₂: An Exceptional Reductant for Metal-Catalyzed Hydrogen Atom Transfers was written by Obradors, Carla;Martinez, Ruben M.;Shenvi, Ryan A.. And the article was included in Journal of the American Chemical Society in 2016.Reference of 14781-45-4 This article mentions the following:

We report the discovery of an outstanding reductant for metal-catalyzed radical hydrofunctionalization reactions. Observations of unexpected silane solvolysis distributions in the HAT-initiated hydrogenation of alkenes reveal that phenylsilane is not the kinetically preferred reductant in many of these transformations. Instead, isopropoxy(phenyl)silane forms under the reaction conditions, suggesting that alcs. function as important silane ligands to promote the formation of metal hydrides. Study of its reactivity showed that isopropoxy(phenyl)silane is an exceptionally efficient stoichiometric reductant, and it is now possible to significantly decrease catalyst loadings, lower reaction temperatures, broaden functional group tolerance, and use diverse, aprotic solvents in iron- and manganese-catalyzed hydrofunctionalizations. As representative examples, we have improved the yields and rates of alkene reduction, hydration, hydroamination, and conjugate addition Discovery of this broadly applicable, chemoselective, and solvent-versatile reagent should allow an easier interface with existing radical reactions. Finally, isotope-labeling experiments rule out the alternative hypothesis of hydrogen atom transfer from a redox-active β-diketonate ligand in the HAT step. Instead, initial HAT from a metal hydride to directly generate a carbon-centered radical appears to be the most reasonable hypothesis. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Reference of 14781-45-4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross-coupling reaction in organic synthesis. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. Reference of 14781-45-4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

Heterophasic synthesis of bimetallic In hexafluoroacetylacetonate complexes with transition metals was written by Zheleznova, L. I.;Slyusarchuk, L. I.;Trunova, E. K.. And the article was included in Ukrainskii Khimicheskii Zhurnal (Russian Edition) in 2016.SDS of cas: 14781-45-4 This article mentions the following:

Heterometallic hexafluoroacetylacetonate (hfacac) complexes [MIn(hfacac)₅] [M = Co(II), Cu(II), Zn] and [NdIn(hfacac)₆] were prepared and examined by IR and UV-vis. diffuse reflectance spectra. The method of synthesis of heteronuclear hexafluoroacetylacetonate complexes which is based on the interaction of the metallic indium dissolved in the hexafluoroacetylacetone and acetonitrile medium in the presence of the oxidizing agent (air oxygen) with an oxide or a chloride of transition metal is suggested. The synthesis of the complexes is carried out in the mild conditions without a use of aggressive reagents, high temperatures and special equipment. Novel heterometallic complexes with the composition of MIn(HFA)_n·AN_m (M – Co(II), Cu(II), Zn(II), Nd(III)) were synthesized. According to IR-spectroscopy, electronic absorption spectra and DTA, it was established that the coordination center of Co(II) and Cu(II) has the structure of distorted octahedron in the complexes with 3d-metals while the neodymium heterometallic complex has C_4v symmetry with coordination number 8 for Nd (III). Based on comparison of the thermal anal. for mono- and heteronuclear hexafluoroacetylacetonate it was shown that heterometallic complexes have a wide interval of stability in a gas phase and low sublimation temperatures In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4SDS of cas: 14781-45-4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, low toxicity and inexpensive. It is clear from the impact copper catalysis has had on organic synthesis that copper should be considered a first line catalyst for many organic reactions.SDS of cas: 14781-45-4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”