Month: February 2023

Thermal and photoinduced electron transfer reactions of phthalocyanine complexes of Zn(II) and Cu(II) in acetonitrile was written by Okawa, Yui;Endo, Kousuke;Hakamata, Yukihiko;Watanabe, Shingo;Yokoyama, Aika;Sugimori, Tamotsu;Takagi, Hideo D.;Inamo, Masahiko. And the article was included in Dalton Transactions in 2022.Reference of 34946-82-2 This article mentions the following:

Phthalocyanine that has four peripheral 2-methoxyphenyl substituents at the α-position and its Zn(II) and Cu(II) complexes were synthesized. Chem. oxidation by the Cu(II) ion and electrochem. oxidation of these metal complexes were studied spectrophotometrically in acetonitrile. The UV-visible absorption spectra of these metal complexes and their one-electron oxidized π-cation radicals showed no concentration dependence, indicating that these species exist as monomers in solution Kinetics of the thermal electron transfer reaction from each phthalocyanine complex to Cu²⁺ and the photoinduced electron transfer reaction of the Zn(II) phthalocyanine complex with V(V) and V(IV) Schiff base complexes were studied using conventional spectrophotometric and transient absorption techniques, and the electron transfer rate constants were analyzed using the Marcus cross relation. The obtained rate constants of the electron self-exchange reaction between the parent phthalocyanine complexes and their π-cation radicals were in the order of 10⁹ to 10¹¹ M^-1s^-1 at T = 298.2 K. These large electron self-exchange rate constants are consistent with the phthalocyanine-centered redox reactions where small reorganization energies are required with little structural change during the electron transfer process. In the experiment, the researchers used many compounds, for example, Copper(II) trifluoromethanesulfonate (cas: 34946-82-2Reference of 34946-82-2).

Copper(II) trifluoromethanesulfonate (cas: 34946-82-2) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, inexpensive and low toxicity. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. Reference of 34946-82-2

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

Hybrid Quinoline Telluroether Ligand Derived Copper and Silver Complexes: Synthesis, Structural and Electronic Properties was written by Raju, Saravanan;Singh, Harkesh B.;Kumar, Sangit. And the article was included in European Journal of Inorganic Chemistry in 2022.Reference of 34946-82-2 This article mentions the following:

The tetradentate organotelluroether (C₉H₆NTe)₂CH₂ ligand was synthesized and its coordination behavior with a stoichiometric amount of Cu(II) and Ag(I) perchlorate and triflate salts was exptl. studied. The isolated ligand and metal complexes were characterized by multinuclear (¹H, ¹³C, ¹²⁵Te) NMR spectroscopy, single crystal x-ray diffraction, and DFT calculations The x-ray anal. revealed the formation of self-assembled bimetallic complexes with the mol. formula of 2[M(C₉H₆NTe)₂CH₂]⁺ X^– [M⁺ = Cu, Ag; X^– = ClO₄, CF₃SO₃]. Further, it was noticed that the metal ions act as a bridging unit to form cationic 8-membered metallamacrocycles in the chair conformation. The atoms in mol. (AIM) and noncovalent interactions (NCI) anal. display a weak intramol. Te···Te interaction. Natural bond orbital (NBO) calculations suggest that the Te has a rich electron donating ability toward metal ions than the quinoline N in the complexes. In the experiment, the researchers used many compounds, for example, Copper(II) trifluoromethanesulfonate (cas: 34946-82-2Reference of 34946-82-2).

Copper(II) trifluoromethanesulfonate (cas: 34946-82-2) belongs to copper catalysts. Copper catalyst has received great attention owing to the low toxicity and low cost. 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.Reference of 34946-82-2

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

A heterospin pressure sensor was written by Maryunina, Kseniya Yu.;Zhang, Xiao;Nishihara, Sadafumi;Inoue, Katsuya;Morozov, Vitaly A.;Romanenko, Galina V.;Ovcharenko, Victor I.. And the article was included in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices in 2015.Related Products of 14781-45-4 This article mentions the following:

The effect of external pressure on the magnetic properties was studied for the 1st time for heterospin crystals based on the Cu(II) complex with nitroxide [Cu(hfac)₂NN-PzMe], which exhibits a spin-crossover-like phenomenon. An increase in the hydrostatic pressure to 0.14 GPa caused a significant shift of the magnetic anomaly temperature (from 150 K to 300 K). This complex actually functions as a highly sensitive external pressure sensor. Crystallog. data are given. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Related Products of 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 low toxicity and inexpensive, earth-abundant. The copper-mediated C-C, C-O, C-N, and C-S bond formation is a part of one oldest reaction, emphasizing the Ullmann cross-coupling reaction.Related Products of 14781-45-4

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

Synthesis, structural characterization and electrochemical and magnetic studies of M(hfac)₂ (M = Cu^II, Co^II) and Nd(hfac)₃ complexes of 4-amino-TEMPO was written by Navarro, Yolanda;Guedes, Guilherme P.;Cano, Joan;Ocon, Pilar;Iglesias, Maria Jose;Lloret, Francisco;Lopez-Ortiz, Fernando. And the article was included in Dalton Transactions in 2020.Computed Properties of C10H2CuF12O4 This article mentions the following:

Three mononuclear complexes [M(hfac)_x(ATEMPO)_y], where M = Cu(11) and Co(12), x = y = 2; M = Nd (13), x = 4, y = 1, and two polynuclear complexes [{Cu(hfac)₂(ATEMPO)}_n], where n = 2 (14) and 4 (15), were obtained by the reaction of M(hfac)_x (M = Cu^II, Co^II, Nd^III; x = 2, 3) with 4-amino-TEMPO (4-amino-2,2,6,6-tetramethylpiperidin-N-oxyl) in good yields and their structural, electrochem. and magnetic properties were examined In all cases, the radical is coordinated to the metal through the amino group, except 15, and the metal ions have an octahedral geometry, except 13. Different coordination architectures of the copper complexes were obtained as a function of the stoichiometry and solvents used. In complexes 11 and 12 the radicals show an equatorial-equatorial and axial-equatorial arrangement, resp., giving rise to two distinct 2D supramol. systems through intermol. interactions. Compound 13 is the first example of a lanthanide complex of the ATEMPO radical. The Nd^III ion adopts a rare nine-coordination via binding to four hfac ligands and the radical. The dinuclear complex 14 shows a (Cu-O)₂ core in which the Cu^II ions are bridged by the oxygen atoms from the hfac ligands. In compound 15 the ATEMPO radical acts as a bidentate ligand through the amino and nitroxyl groups leading to an unprecedented tetranuclear square-shaped framework. Cyclic voltammetry showed redox processes associated with the copper and TEMPO moieties. Electrochem. impedance spectroscopy revealed the temperature dependence of the conductivity for compound 15 with a maximum of 2.09 x 10^-5 S cm^-1 at 408 K. The magnetic behavior of complexes 11–15 is determined by metal-radical interactions. Ferromagnetic interaction was observed for complex 11 due to the existence of two different exchange pathways arising from the conformational arrangement of the radicals around the metal center, whereas the single conformation of the radical in complex 14 resulted in a weak antiferromagnetic coupling. In complex 15 both O-Cu and N-Cu contacts are present giving rise to ferromagnetic and antiferromagnetic interactions, resp. 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. Copper catalyst has received great attention owing to the low toxicity and low cost. 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”

Asymmetric Hydroformylation of Heterocyclic Olefins Mediated by Supramolecularly Regulated Rhodium-Bisphosphite Complexes was written by Rovira, Laura;Vaquero, Monica;Vidal-Ferran, Anton. And the article was included in Journal of Organic Chemistry in 2015.Synthetic Route of C24H34O2 This article mentions the following:

Rhodium complexes derived from conformationally transformable α,ω-bisphosphite ligands combined with a suitable alkali metal BArF salt as a regulation agent (RA) provide high regio- and enantioselectivities in the asym. hydroformylation (AHF) of three heterocyclic olefins. The outcome of the AHF could be exquisitely regulated by choosing the appropriate RA with an increase in the ee, the reversal of the regioselectivity, or the complete suppression of one byproduct. In the experiment, the researchers used many compounds, for example, (S)-3,3′-Di-tert-butyl-5,5′,6,6′-tetramethylbiphenyl-2,2′-diol (cas: 205927-03-3Synthetic Route of C24H34O2).

(S)-3,3′-Di-tert-butyl-5,5′,6,6′-tetramethylbiphenyl-2,2′-diol (cas: 205927-03-3) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to low toxicity and inexpensive, earth-abundant. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. Synthetic Route of C24H34O2

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

Dual-Functionalization of Alkynes via Copper-Catalyzed Carbene/Alkyne Metathesis: A Direct Access to the 4-Carboxyl Quinolines was written by Yao, Ruwei;Rong, Guangwei;Yan, Bin;Qiu, Lihua;Xu, Xinfang. And the article was included in ACS Catalysis in 2016.COA of Formula: C10H2CuF12O4 This article mentions the following:

A copper-catalyzed novel carbene/alkyne metathesis cascade reaction with alkyne-tethered diazo compounds is described. The whole transformation features a dual-functionalization of alkyne to install one C=N and one C=C bond on each carbon with azide and diazo groups, resp., in one reaction, which represents a practical synthetic alternative to the multisubstituted 4-carboxyl quinoline derivatives and with most of them in high to excellent yields. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4COA of Formula: C10H2CuF12O4).

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. COA of Formula: C10H2CuF12O4

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

Synthesis and Application of a New Bisphosphite Ligand Collection for Asymmetric Hydroformylation of Allyl Cyanide was written by Cobley, Christopher J.;Gardner, Kelli;Klosin, Jerzy;Praquin, Celine;Hill, Catherine;Whiteker, Gregory T.;Zanotti-Gerosa, Antonio;Petersen, Jeffrey L.;Abboud, Khalil A.. And the article was included in Journal of Organic Chemistry in 2004.Synthetic Route of C24H34O2 This article mentions the following:

A series of mono- and bidentate phosphites was prepared with (S)-5,5′,6,6′-tetramethyl-3,3′-di-tert-butyl-1,1′-biphenyl-2,2′-dioxy [(S)-BIPHEN] as a chiral auxiliary and screened in the asym. hydroformylation of butenenitrile. These hydroformylation results were compared with those of two existing chiral ligands, Chiraphite and BINAPHOS, whose utility in asym. hydroformylation has been previously demonstrated. One bis(phosphite) with a 2,2′-biphenol bridge was found to be the best overall ligand for asym. hydroformylation of allyl cyanide with up to 80% ee and regioselectivities (branch-to-linear ratio, b/l) of 20 with turnover frequency of 625 [h^-1] at 35 °C. BINAPHOS gave enantioselectivities up to 77% ee when the reaction was conducted in either acetone or neat but with poor regioselectivity (b/l 2.8) and activities 7 times lower than that of (S,S)-Kelliphite [(S,S)-I]. The product of butenenitrile hydroformylation using (11aR,11’aR)-[[[1,1′-biphenyl]diyl]bis(oxy)]bis[dibenzo[d,f][1,3,2]dioxaphosphepin], i.e. (R,R)-I [(R,R)-Kelliphite] was subsequently transformed into (R)-4-amino-2-methyl-1-butanol, a useful chiral building block. Single-crystal X-ray structures of (S,S)-I and its rhodium complex were determined In the experiment, the researchers used many compounds, for example, (S)-3,3′-Di-tert-butyl-5,5′,6,6′-tetramethylbiphenyl-2,2′-diol (cas: 205927-03-3Synthetic Route of C24H34O2).

(S)-3,3′-Di-tert-butyl-5,5′,6,6′-tetramethylbiphenyl-2,2′-diol (cas: 205927-03-3) 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. Copper nanoparticles can also catalyze the coupling reaction of nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.Synthetic Route of C24H34O2

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

Phospholane-Phosphite Ligands for Rh Catalyzed Enantioselective Conjugate Addition: Unusually Reactive Catalysts for Challenging Couplings was written by Gilbert, Sophie H.;Fuentes, Jose A.;Cordes, David B.;Slawin, Alexandra M. Z.;Clarke, Matthew L.. And the article was included in European Journal of Organic Chemistry in 2020.Electric Literature of C24H34O2 This article mentions the following:

The use of Rh catalysts derived from a phospholane-phosphite ligand were found to be more productive than the classic rhodium/BINAP system in enantioselective conjugate additions These catalysts enable the use of lower amounts of aryl boronic acid in an asym. arylation reaction that required an impractical excess of nucleophile. This catalyst was also found to enable the coupling of a poorly reactive Michael acceptor, N-CBz-2-3-dehydro-4-piperidone, or the coupling of poorly reactive 2-furyl boronic acids at ambient or near temperatures In the experiment, the researchers used many compounds, for example, (S)-3,3′-Di-tert-butyl-5,5′,6,6′-tetramethylbiphenyl-2,2′-diol (cas: 205927-03-3Electric Literature of C24H34O2).

(S)-3,3′-Di-tert-butyl-5,5′,6,6′-tetramethylbiphenyl-2,2′-diol (cas: 205927-03-3) belongs to copper catalysts. The evolution of transition metal catalysts has attained a stage of civilization that authorizes for an extensive scope of chemical bonds formation partners to be combined efficiently. Due to these characteristics, copper nanoparticles have generated a great deal of interest especially in the field of catalysis. Electric Literature of C24H34O2

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

ScCO₂ assisted preparation of supported metal NPs. Application to catalyst design. was written by Pascu, Oana;Cacciuttolo, Bastien;Marre, Samuel;Pucheault, Mathieu;Aymonier, Cyril. And the article was included in Journal of Supercritical Fluids in 2015.SDS of cas: 14781-45-4 This article mentions the following:

Designing and developing materials with specific properties are nowadays important tasks. These could be achieved by choosing the adequate conditions, from a myriad of possibilities, being aware that slight changes in the preparation method could have major impact on the final material. With the work presented here, we are showing that kinetically controlled surface nano-structuring (NPs formation and deposition over solid supports) in scCO₂ is a versatile way for preparing active materials. Size, composition, morphol. and organization/architecture of supported metal NPs can be controlled by playing with the type of metal, metal precursor, reaction media composition (stronger or weaker reducing media) and different supports employed. Moreover, direct correlation between phys. (size, morphol., organization) and chem. properties (composition, surface chem.) are demonstrated with the systems catalytic behavior, yield and selectivity, exemplified with N-alkylation reaction of amines with alcs. 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. Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross-coupling reaction in organic synthesis. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. SDS of cas: 14781-45-4

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

Copper-Catalyzed 1,2,5-Trifunctionalization of Terminal Alkynes Using SR as a Transient Directing Group for Radical Translocation was written by Feng, Jian;Zhang, Fang;Shu, Chenyun;Zhu, Gangguo. And the article was included in Chinese Journal of Chemistry in 2022.Formula: C2CuF6O6S2 This article mentions the following:

The first Cu-catalyzed 1,2,5-trifunctionalization of abundant terminal alkynes is realized by merging hydrogen atom transfer and traceless directing strategy with SR as a transient group, delivering highly functionalized aldehydes in moderate to excellent yields with broad substrate scope. The synthetic utility of this method was demonstrated by the gram-scale reaction and downstream transformations of the resultant products. Given the high efficient installation of three different functional groups in a single reaction, it can serve as a very attractive method for rapidly assembling complex mols. from readily available starting materials. In the experiment, the researchers used many compounds, for example, Copper(II) trifluoromethanesulfonate (cas: 34946-82-2Formula: C2CuF6O6S2).

Copper(II) trifluoromethanesulfonate (cas: 34946-82-2) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, low toxicity and inexpensive. The copper-mediated C-C, C-O, C-N, and C-S bond formation is a part of one oldest reaction, emphasizing the Ullmann cross-coupling reaction.Formula: C2CuF6O6S2

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