Month: February 2023

Mo-Catalyzed Asymmetric Synthesis of Dihydrofurans. Catalytic Kinetic Resolution and Enantioselective Desymmetrization through Ring-Closing Metathesis was written by La, Daniel S.;Alexander, John B.;Cefalo, Dustin R.;Graf, David D.;Hoveyda, Amir H.;Schrock, Richard R.. And the article was included in Journal of the American Chemical Society in 1998.Reference of 205927-03-3 This article mentions the following:

The first catalytic and enantioselective synthesis of chiral heterocycles effected through the use of chiral molybdenum metathesis catalysts was presented. The molybdenum-catalyzed desymmetrization process was very effective. For example, the chiral molybdenum-catalyzed resolution and ring-closing metathesis of 2-methyl-3-[(2-propenyl)oxy]-1-octene resulted in the formation of (S)-2-methyl-3-[(2-propenyl)oxy]-1-octene and (R)-2,5-dihydro-3-methyl-2-pentylfuran. 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: 205927-03-3Reference of 205927-03-3).

(S)-3,3′-Di-tert-butyl-5,5′,6,6′-tetramethylbiphenyl-2,2′-diol (cas: 205927-03-3) 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 nitrogen-containing nucleophiles, phenols, thiols, xanthogenates, selenium ruthenium nucleophiles and the like.Reference of 205927-03-3

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

Metal-Organic Frameworks Precipitated by Reactive Crystallization in Supercritical CO₂ was written by Lopez-Periago, Ana M.;Portoles-Gil, Nuria;Lopez-Dominguez, Pedro;Fraile, Julio;Saurina, Javier;Aliaga-Alcalde, Nuria;Tobias, Gerard;Ayllon, Jose A.;Domingo, Concepcion. And the article was included in Crystal Growth & Design in 2017.Recommanded Product: copper(ii)hexafluor-2,4-pentanedionate This article mentions the following:

Fine chem. and pharmaceutical companies often employ reactive crystallization or precipitation to make crystalline intermediates and finished products. The supercritical reactive crystallization route was used for the precipitation of diverse metal-organic frameworks (MOFs). 1-dimensional and 2-dimensional MOFs were obtained by reacting either bipyridyl (two linking positions) or triazine (three linking positions)-based bridging mols., resp., with supercritical CO₂ soluble M(hfacac)₂ (M = Zn²⁺ or Cu²⁺ and hfacac^– stands for hexafluoroacetylacetonate). Addnl., miscellaneous reactions were designed for the crystallization of 3-dimensional MOFs in scCO₂, embracing the precipitation of MIL-88B(Fe), ZIF-8, and a new Zn²⁺-curcumin coordination polymer. Obtained crystals in each case were analyzed from a morphol. point of view by SEM anal. to elucidate potential formation mechanisms. The focus was on the obtained crystal habits at different reaction points, linked to the precipitation mode and the role of kinetic and thermodn. crystal growth control. The supercritical procedure led to the crystallization of stable hierarchical nanostructures with micro- and mesoporosity and the precipitation of nanocrystals. 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 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. 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”

Two-Fold Intramolecular Phosphacyclization: From Fluorescent Diphosphapyrene Salts to Pentavalent Derivatives was written by Hindenberg, Philip;Belyaev, Andrey;Rominger, Frank;Koshevoy, Igor O.;Romero-Nieto, Carlos. And the article was included in Organic Letters in 2022.Name: Copper(II) trifluoromethanesulfonate This article mentions the following:

The synthesis of π-extended pyrene-based luminescent compounds containing two six-membered phosphacycles was realized through a two-step synthesis. It involves a Cu(II)-mediated double cyclization of tertiary diphosphine derivatives to afford dicationic mols. with quaternized P centers. Subsequent transformation of diphosphonium species into the corresponding P-oxide derivatives was successfully achieved through Pd(0)-assisted cleavage of the P-Ph bonds, which opens a promising way for the functionalization of polyaromatic P-systems. 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. 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.Name: Copper(II) trifluoromethanesulfonate

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

Targeting molecular quantum memory with embedded error correction was written by Lockyer, Selena J.;Chiesa, Alessandro;Timco, Grigore A.;McInnes, Eric J. L.;Bennett, Tom S.;Vitorica-Yrezebal, Inigo J.;Carretta, Stefano;Winpenny, Richard E. P.. And the article was included in Chemical Science in 2021.Synthetic Route of C10H2CuF12O4 This article mentions the following:

The implementation of a quantum computer requires both to protect information from environmental noise and to implement quantum operations efficiently. Achieving this by a fully fault-tolerant platform, in which quantum gates are implemented within quantum-error corrected units, poses stringent requirements on the coherence and control of such hardware. A more feasible architecture could consist of connected memories, that support error-correction by enhancing coherence, and processing units, that ensure fast manipulations. We present here a supramol. {Cr₇Ni}-Cu system which could form the elementary unit of this platform, where the electronic spin 1/2 of {Cr₇Ni} provides the processor and the naturally isolated nuclear spin 3/2 of the Cu ion is used to encode a logical unit with embedded quantum error-correction. We demonstrate by realistic simulations that microwave pulses allow us to rapidly implement gates on the processor and to swap information between the processor and the quantum memory. By combining the storage into the Cu nuclear spin with quantum error correction, information can be protected for times much longer than the processor coherence. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Synthetic Route 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 of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. Synthetic Route of C10H2CuF12O4

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

Silylium-Ion-Promoted Skeletal Reorganization of β-Silylated Cyclopropanes Bearing an Allyl Group at the Silicon Atom Coupled with Intermolecular Formation of a Quaternary Carbon Atom was written by Long, Peng-Wei;Wang, Guoqiang;Klare, Hendrik F. T.;Oestreich, Martin. And the article was included in ACS Catalysis in 2022.Application In Synthesis of Copper(II) trifluoromethanesulfonate This article mentions the following:

A highly selective cationic rearrangement of β-silylated cyclopropanes bearing an allyl group at the Si atom is reported. The reaction cascade is initiated by trityl-cation-mediated deallylation to preferentially yield one of two diastereomeric cyclopropane-stabilized silylium ions. This is the starting point for a concerted [1,2]-hydride shift/ring expansion driven by the release of ring strain of the cyclopropane ring. The resulting tertiary carbenium ion is then captured by an intermol. Si-to-C allyl transfer from another precursor mol. By this, a quaternary C atom is formed. The computed reaction mechanism is fully consistent with the exptl. findings. 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. 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.Application In Synthesis of Copper(II) trifluoromethanesulfonate

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

Magnetic relaxation in [Ln(hfac)₄]^– anions with [Cu(hfac)-radical]_nⁿ⁺ cation chains as counterions was written by Sun, Juan;Yang, Meng;Xi, Lu;Ma, Yue;Li, Licun. And the article was included in Dalton Transactions in 2018.Product Details of 14781-45-4 This article mentions the following:

Using a new nitronyl nitroxide radical Nit-Ph-PyIm, two novel 3d-4f complexes with the formula {[Ln(hfac)₄]^–[Cu(hfac)(Nit-Ph-PyIm)]⁺}_n (Ln^III = Gd 1, Dy 2) have been isolated (Nit-Ph-PyIm = 2-[4-[2-(2-pyridinyl)-1H-imidazol-1-yl]-phenyl]-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide; hfac = hexafluoroacetylacetonate). Interestingly, for both compounds, there are discrete [Ln(hfac)₄]^– anions while [Cu(hfac)-radical]_nⁿ⁺ chains serve as counter-ions in which the Nit-Ph-PyIm radicals link [Cu(hfac)]⁺ units through their NO groups and imidazolyl pyridine moieties. The [Cu(hfac)(Nit-Ph-PyIm)]⁺ unit is diamagnetic owing to the strong antiferromagnetic coupling between the Cu(II) ion and the equatorially coordinated NO group. Complex 2 shows field-induced slow magnetization relaxation, arising from [Dy(hfac)₄]^– anions that exhibit distorted square-antiprism (D_4d) geometries. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Product Details 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, low toxicity and inexpensive. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. Product Details of 14781-45-4

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

A metal-radical hetero-tri-spin SCM with methyl-pyrazole-nitronyl nitroxide bridges was written by Huang, Xiaohui;Wang, Kang;Han, Jing;Xie, Junfang;Li, Licun;Sutter, Jean-Pascal. And the article was included in Dalton Transactions in 2021.Electric Literature of C10H2CuF12O4 This article mentions the following:

The preparation, crystal structures, and magnetic properties of a family of hetero-tri-spin 1-D coordination polymers with the formula [Ln(hfac)₃Cu(hfac)₂(4-NIT-MePyz)₂] (Ln = Gd, 1, Tb, 2, Dy, 3; hfac = hexafluoroacetylacetonate; 4-NIT-MePyz = 2-{4-(1-methyl)-pyrazolyl}-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) are reported. In these complexes, the 4-NIT-MePyz radical acts as a linker to bridge the CuII and LnIII ions through its pyrazole and aminoxyl groups to form a chain structure. Magnetic properties typical of spin-chains are observed for Dy and Tb derivatives but single-chain magnet (SCM) behavior was evidenced only for the Tb compound which is characterized by an energy gap for demagnetization Δτ/kB of 31 K. 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. Copper catalyst has received great attention owing to the low toxicity and low cost. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. Electric Literature of C10H2CuF12O4

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

Catalytic Enantioselective Ring-Closing Metathesis by a Chiral Biphen-Mo Complex was written by Alexander, John B.;La, Daniel S.;Cefalo, Dustin R.;Hoveyda, Amir H.;Schrock, Richard R.. And the article was included in Journal of the American Chemical Society in 1998.SDS of cas: 205927-03-3 This article mentions the following:

The enantioselective synthesis of chiral Mo-alkylidene I is reported. This nonracemic transition metal complex bears 5,5′,6,6′-tetramethyl-3,3′-di-tert-butyl-1,1′-biphenyl-2,2′-diol as the chiral ligand, which is resolved by recrystallization of the derived phosphoric acid with optically pure cinchonidine. The catalyst structure is characterized by x-ray crystallog., as well as routine spectroscopic methods. I effects enantioselective ring-closing metathesis efficiently and with excellent selectivity. Depending on the substitution pattern of the reacting alkenes, either the diene substrate or the cycloalkenyl product can be obtained in >92% ee, corresponding to k_rel of up to 58. 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: 205927-03-3SDS of cas: 205927-03-3).

(S)-3,3′-Di-tert-butyl-5,5′,6,6′-tetramethylbiphenyl-2,2′-diol (cas: 205927-03-3) belongs to copper catalysts. Copper has continued to be one of the most utilized and important transition metal catalysts in synthetic organic chemistry. 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: 205927-03-3

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

Catalytic Enantioselective Synthesis of 4-Amino-5-aryltetrahydro-1H-benzo[c]azepines by an Aminoarylation Reaction was written by Akhtar, Sk Samim Md;Hajra, Saumen. And the article was included in Synlett.Name: Copper(II) trifluoromethanesulfonate This article mentions the following:

A one-pot asym. aminoarylation reaction has been executed for the synthesis of trans-4-amino-5-aryltetrahydrobenzo[c]azepines with excellent diastereo- and enantioselectivity (dr > 99: 1; ee ≤97%). The reaction progresses through aziridination of prochiral N-tosyl-N-cinnamylbenzylamines, followed by an intramol. 7-endo-tet Friedel-Crafts cyclization of the tethered aziridines generated in situ, where the combination of Cu(OTf)₂ as a catalyst and PhINNs as a nitrene source was found to be effective. A chiral indenyl bis(oxazoline) was shown to be an efficient ligand for the catalytic enantioselective version of this one-pot transformation. This 7-endo-tetcyclization is contrary to the Baldwin cyclization rules. 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. Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross-coupling reaction in organic synthesis. 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. Name: Copper(II) trifluoromethanesulfonate

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

Supramolecular heptanuclear Ln-Cu complexes involving nitronyl nitroxide biradicals: structure and magnetic behavior was written by Xi, Lu;Jin, Chao-Yi;Song, Hong-Wei;Wang, Xiao-Tong;Li, Li-Cun;Sutter, Jean-Pascal. And the article was included in Dalton Transactions in 2022.Computed Properties of C10H2CuF12O4 This article mentions the following:

Four novel heptanuclear Ln-Cu complexes with the formula [Ln₂Cu(hfac)₈(NITPhTzbis)₂][LnCu(hfac)₅(NITPhTzbis)]₂ (LnCu = YCu 1, TbCu 2, DyCu 3 and HoCu 4; hfac = hexafluoroacetylacetonate) were successfully constructed by employing the triazole functionalized nitronyl nitroxide biradical ligand NITPh-Tzbis (NITPh-Tzbis = 5-(1,2,4-triazolyl)-1,3-bis(1′-oxyl-3′-oxido-4′,4′,5′,5′-tetramethyl-4,5-hydro-1H-imidazol-2-yl)benzene). These hetero-tri-spin complexes are composed of two biradical-bridged dinuclear [LnCu(hfac)₅(NITPhTzbis)] units and one trinuclear [Ln₂Cu(hfac)₈(NITPhTzbis)₂] unit which form a heptanuclear supramol. structure through π-π interactions. Magnetic susceptibility investigations indicate that ferromagnetic exchange interactions dominate at low temperature for this supramol. system which can be attributed to the Ln-nitroxide exchange and intramol. NIT···NIT coupling mediated by the m-phenylene moiety. The DyCu derivative was found to exhibit a slow magnetic relaxation behavior. 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 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. 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.Computed Properties of C10H2CuF12O4

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