Day: February 23, 2023

Monophosphoniums as Effective Photoredox Organocatalysts for Visible Light-Regulated Cationic RAFT Polymerization was written by Yang, Zan;Chen, Jianxu;Liao, Saihu. And the article was included in ACS Macro Letters in 2022.Category: copper-catalyst This article mentions the following:

Visible light-regulated metal-free polymerizations have attracted considerable attention for macromol. syntheses in recent years. However, few organic photocatalysts show high efficiency and strict photocontrol in cationic polymerizations Herein, we introduce monophosphonium-doped polycyclic arenes as an organic photocatalyst, which features the high tunability, broad redox window, long excited state lifetime, and excellent temporal control in the cationic reversible addition-fragmentation chain transfer polymerization of vinyl ethers. A correlation of the catalytic performance and the photophys. and electrochem. properties of photocatalysts is also discussed. In the experiment, the researchers used many compounds, for example, Copper(II) trifluoromethanesulfonate (cas: 34946-82-2Category: copper-catalyst).

Copper(II) trifluoromethanesulfonate (cas: 34946-82-2) 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. Category: copper-catalyst

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

Hollow Microcrystals of Copper Hexafluoroacetylacetonate-Pyridine Derivative Adducts via Supercritical CO₂ Recrystallization was written by Lopez-Periago, Ana;Vallcorba, Oriol;Domingo, Concepcion;Ayllon, Jose A.. And the article was included in Crystal Growth & Design in 2016.Related Products of 14781-45-4 This article mentions the following:

An innovative crystallization process, based on the use of the ecofriendly supercritical carbon dioxide (scCO₂) solvent, is presented for the production of coordination compound macrocrystals [Cu(hfacac)₂(dPy)₂], with intriguing prismatic hollow structures and single polymorphic forms. In contrast, conventional solvents yielded compact microstructures. The studied pyridine derivatives (dPy) were 4-phenylpyridine, PhPy; 4-benzylylpyridine, BzPy; and 4-acetylpyridine, AcPy. In the specific case of the [Cu(hfacac)₂(AcPy)₂] adduct, the use of scCO₂ as a solvent allowed obtaining a pure polymorph, while the conventional solvent trials yielded a mixture of two polymorphs. Four new crystalline structures were resolved from single crystal x-ray diffraction. All the structures consist of mononuclear complexes connected through intermol. interactions, including H···H, H···O, F···F, C-F···C_aromatic, and/or C-F···π interactions, generating bi-dimensional networks that determine their crystallization mode in scCO₂. 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 the earth-abundant, inexpensive and low toxicity. 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.Related Products of 14781-45-4

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

Structural and Dynamic Disorder, Not Ionic Trapping, Controls Charge Transport in Highly Doped Conducting Polymers was written by Jacobs, Ian E.;D’avino, Gabriele;Lemaur, Vincent;Lin, Yue;Huang, Yuxuan;Chen, Chen;Harrelson, Thomas F.;Wood, William;Spalek, Leszek J.;Mustafa, Tarig;O’Keefe, Christopher A.;Ren, Xinglong;Simatos, Dimitrios;Tjhe, Dion;Statz, Martin;Strzalka, Joseph W.;Lee, Jin-Kyun;McCulloch, Iain;Fratini, Simone;Beljonne, David;Sirringhaus, Henning. And the article was included in Journal of the American Chemical Society in 2022.COA of Formula: C2CuF6O6S2 This article mentions the following:

Doped organic semiconductors are critical to emerging device applications, including thermoelecs., bioelectronics, and neuromorphic computing devices. It is commonly assumed that low conductivities in these materials result primarily from charge trapping by the Coulomb potentials of the dopant counterions. Here, we present a combined exptl. and theor. study rebutting this belief. Using a newly developed doping technique based on ion exchange, we prepare highly doped films with several counterions of varying size and shape and characterize their carrier d., elec. conductivity, and paracryst. disorder. In this uniquely large data set composed of several classes of high-mobility conjugated polymers, each doped with at least five different ions, we find elec. conductivity to be strongly correlated with paracryst. disorder but poorly correlated with ionic size, suggesting that Coulomb traps do not limit transport. A general model for interacting electrons in highly doped polymers is proposed and carefully parametrized against atomistic calculations, enabling the calculation of elec. conductivity within the framework of transient localization theory. Theor. calculations are in excellent agreement with exptl. data, providing insights into the disorder-limited nature of charge transport and suggesting new strategies to further improve conductivities. In the experiment, the researchers used many compounds, for example, Copper(II) trifluoromethanesulfonate (cas: 34946-82-2COA of Formula: 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. 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.COA of Formula: C2CuF6O6S2

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

Catalytic Regio- and Enantioselective Protonation for the Synthesis of Chiral Allenes: Synergistic Effect of the Counterion and Water was written by Lin, Qianchi;Zheng, Sujuan;Chen, Long;Wu, Jin;Li, Jinzhao;Liu, Peizhi;Dong, Shunxi;Liu, Xiaohua;Peng, Qian;Feng, Xiaoming. And the article was included in Angewandte Chemie, International Edition in 2022.Name: Copper(II) trifluoromethanesulfonate This article mentions the following:

A highly enantioselective tandem Pudovik addition/[1,2]-phospha-Brook rearrangement of α-alkynylketoamides with diarylphosphine oxides was achieved with a N,N’-dioxide/Sc^III complex as the catalyst. This protocol features broad substrate scope, high regio- and enantioselectivity, and good functional-group compatibility, providing a straightforward route to various trisubstituted allenes with a diarylphosphinate functionality in good yields with high enantioselectivities (up to 97% yield, 96% ee). Control experiments and theor. calculations revealed that a synergistic effect of the counterion and water was critical for the regio- and enantioselective protonation after [1,2]-phospha-Brook rearrangement. The synthetic utility of this methodol. was demonstrated by the conversion of products into complex bridged polycyclic architectures through intramol. dearomatizing arene/allene cycloaddition In the experiment, the researchers used many compounds, for example, Copper(II) trifluoromethanesulfonate (cas: 34946-82-2Name: Copper(II) trifluoromethanesulfonate).

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. 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.Name: Copper(II) trifluoromethanesulfonate

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

One-pot synthesis of α-sulfoximinophosphonate via Kabachnik-Fields reaction was written by Natarajan, K.;Sharma, Suraj;Irfana Jesin, C. P.;Kataria, Ramesh;Nandi, Ganesh Chandra. And the article was included in Organic & Biomolecular Chemistry in 2022.Electric Literature of C2CuF6O6S2 This article mentions the following:

Herein, we disclose a novel approach for the synthesis of hitherto unknown α-sulfoximinophosphonate via the Kabachnik-Fields reaction of aldehyde, dialkylphosphite and sulfoximine in the presence of InCl₃ in THF at 70°C. α-Sulfoximinophosphonate is synthesized in good yields and its synthetic utilities are proved by functionalizing bromine through the Pd-catalyzed Suzuki-Miyaura cross-coupling reaction and reduction of a nitro group through the Bećhamp reduction In the experiment, the researchers used many compounds, for example, Copper(II) trifluoromethanesulfonate (cas: 34946-82-2Electric Literature of C2CuF6O6S2).

Copper(II) trifluoromethanesulfonate (cas: 34946-82-2) 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 catalyze the Ullmann coupling reaction in a wide range of applications.Electric Literature of C2CuF6O6S2

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

Controlling π-π Interactions through Coordination Bond Formation: Assembly of 1-D Chains of acac-Based Coordination Compounds was written by Leon-Zarate, Rafael;Valdes-Martinez, Jesus. And the article was included in Crystal Growth & Design in 2021.Recommanded Product: copper(ii)hexafluor-2,4-pentanedionate This article mentions the following:

Authors present a new approach for the construction of 1-D chains of acac-based copper coordination compounds assembled through π-π aromatic interactions. They use 3-(phenylethynyl)pyridine derivatives as ligands that can establish aromatic interactions to intermolecularly bind the coordination compounds The crystal networks of the free pyridines show that there is no control over aromatic interactions, since different interactions are present. On the other hand, the supramol. behavior of the coordination compounds is very homogeneous since, in all of the crystal networks, the intended 1-D chains are present. Given the polarization of the aromatic rings due to coordination, reflected in the calculated mol. electrostatic potential maps, authors gain control over the π-π interaction geometry, promoting a head to tail interaction between the coordinated 3-(phenylethynyl)pyridines. This strategy to constructing 1-D chains is reliable and reproducible; thus, these types of π-π aromatic interactions are a useful supramol. tool to control the mol. assembly in the solid state. 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. Copper has continued to be one of the most utilized and important transition metal catalysts in synthetic organic chemistry. Copper nanoparticles can catalyze the Ullmann coupling reaction in a wide range of applications.Recommanded Product: copper(ii)hexafluor-2,4-pentanedionate

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

Synthesis of β-Polychlorinated Alkynes Enabled by Copper-Catalyzed Multicomponent Reaction was written by Wang, Qiuzhu;Wang, Mengning;Wu, Qianhui;Ma, Mengtao;Zhao, Binlin. And the article was included in Organic Letters in 2022.Application In Synthesis of Copper(II) trifluoromethanesulfonate This article mentions the following:

Functional mols. bearing polychlorinated moieties usually play versatile roles in organic synthesis and biochem. A copper-catalyzed multicomponent polychloro-carboalkynylation of alkenes presents an efficient and operationally simple approach for the synthesis of β-polychlorinated alkynes. Mechanistic experiments were conducted demonstrating that an in situ generated copper acetylide complex was the real catalyst and reactive intermediate during the copper-catalytic cycle. And enantioselective exploration demonstrated potential application for the synthesis of chiral β-polychlorinated alkynes. In the experiment, the researchers used many compounds, for example, Copper(II) trifluoromethanesulfonate (cas: 34946-82-2Application In Synthesis of Copper(II) trifluoromethanesulfonate).

Copper(II) trifluoromethanesulfonate (cas: 34946-82-2) 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. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. Application In Synthesis of Copper(II) trifluoromethanesulfonate

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

Homo- and heterometallic complexes constructed from hexafluoroacetylacetonato and Schiff-base complexes as building-blocks was written by Mocanu, Mihaela I.;Shova, Sergiu;Lloret, Francesc;Julve, Miguel;Andruh, Marius. And the article was included in Journal of Coordination Chemistry in 2018.Related Products of 14781-45-4 This article mentions the following:

Three new homo- and heterotrimetallic complexes were synthesized and crystallog. characterized: [Cu₂(saldmpn)₂(μ-OCH₃)₂Cu₂(hfac)₂] (1), [Ni₂(valaepy)₂(hfac)₂] (2), [Cu(saldmpn)Co(hfac)₂] (3) [H₂saldmpn is the Schiff-base resulting from condensation of salicylaldehyde with 2,2-dimethyl-1,3-diaminopropane and Hvalaepy results from the reaction of o-vanillin with 2-(2-aminoethyl)pyridine]. The structure of consists of a neutral tetranuclear species that can be viewed as resulting from mutual coordination of one {(hfac)Cu(μ-OCH₃)₂(Cu(hfac))} and two {Cu(saldmpn)} building blocks. Compound is a binuclear complex that results from two {Ni(hfac)(valaepy)} fragments, the nickel(II) ions bridged by the two phenoxide-oxygens. The heterobinuclear complex results from coordination of the [Cu(saldmpn)] metalloligand to cobalt(II) from the {Co(hfac)₂} unit. The magnetic properties of were studied from 1.9 to 300 K. An overall ferromagnetic behavior is observed for and leading to S = 2 low-lying spin state for each. In the case of, a non-magnetic ground state results because of the occurrence of an intramol. antiferromagnetic coupling between the copper(II) ion and the high-spin cobalt(II) ion, this last one behaving as an effective spin S_eff = 1/2 at low temperatures where only the ground Kramers doublet of Co(II) is thermally populated. The values of the intramol. magnetic couplings in are compared with those from the literature on related systems. 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. 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. Related Products of 14781-45-4

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

Enantio- and Diastereoselective Cu(II)-Catalyzed Conjugate Borylation/Michael Addition Cascade: Synthesis of Spiroindane Boronates was written by Khalse, Laxman Devidas;Gorad, Sachin S.;Ghorai, Prasanta. And the article was included in Organic Letters in 2022.Electric Literature of C2CuF6O6S2 This article mentions the following:

The authors report a Cu(II)-(S,S)-ⁱPr-FOXAP-catalyzed borylative Michael/Michael addition cascade cyclization of unsym. dienone for the synthesis of highly substituted and functionalized all-C spiroindane boronates under mild conditions. Optically active spiroindanes bearing boronic ester were obtained with excellent yields and good to excellent enantioselectivities (≤97% ee) and diastereoselectivities (up to >20:1 dr). Scale-up synthesis of this method and synthetic transformations of spiroindane boronates are also illustrated. In the experiment, the researchers used many compounds, for example, Copper(II) trifluoromethanesulfonate (cas: 34946-82-2Electric Literature of C2CuF6O6S2).

Copper(II) trifluoromethanesulfonate (cas: 34946-82-2) 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. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. Electric Literature of C2CuF6O6S2

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

A Counterion/Ligand-Tuned Chemo- and Enantioselective Copper-Catalyzed Intermolecular Radical 1,2-Carboamination of Alkenes was written by Cheng, Xian-Yan;Zhang, Yu-Feng;Wang, Jia-Huan;Gu, Qiang-Shuai;Li, Zhong-Liang;Liu, Xin-Yuan. And the article was included in Journal of the American Chemical Society in 2022.Formula: C10H2CuF12O4 This article mentions the following:

The copper-catalyzed enantioselective intermol. radical 1,2-carboamination of alkenes with readily accessible alkyl halides was an appealing strategy for producing chiral amine scaffolds. The challenge arised from the easily occurring atom transfer radical addition between alkyl halides and alkenes and the issue of enantiocontrol. A radical alkene 1,2-carboamination with sulfoximines in a highly chemo- and enantioselective manner was described. The key to the success of this process is the conceptual design of a counterion/highly sterically demanded ligand coeffect to promote the ligand exchange of copper(I) with sulfoximines and forge chiral C-N bonds between alkyl radicals and the chiral copper(II) complex. The reaction covered alkenes bearing distinct electronic properties, such as aryl-, heteroaryl-, carbonyl- and aminocarbonyl-substituted ones and various radical precursors, including alkyl chlorides, bromides, iodides and the CF₃ source. 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 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.Formula: C10H2CuF12O4

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