Month: October 2022

In 2019,Organic Letters included an article by Ren, Hai; Song, Jun-Rong; Li, Zhi-Yao; Pan, Wei-Dong. HPLC of Formula: 7789-45-9. The article was titled 《Oxazoline-/Copper-Catalyzed Alkoxyl Radical Generation: Solvent-Switched to Access 3a,3a’-Bisfuroindoline and 3-Alkoxyl Furoindoline》. The information in the text is summarized as follows:

We report the first example of oxazoline-/copper-catalyzed alc. oxidation to generate the alkoxyl radical under additive-free conditions. The resulting alkoxyl radical addition to alkene enables useful C-O bond-forming and selective C(sp3)-C(sp3) radical-radical dimerization/radical-trapping reactions, providing direct access to the 3a,3a’-bisfuro[2,3-b]indoline scaffold for the first time and a wide range of 3-alkoxyl furoindolines with high efficiency. In addition to this study using Cupric bromide, there are many other studies that have used Cupric bromide(cas: 7789-45-9HPLC of Formula: 7789-45-9) was used in this study.

Cupric bromide(cas: 7789-45-9) can be used as reducing agent, when complexed by three molecules of pyridine initiators for the controlled polymerization of styrene, methyl acrylate and methyl methacrylate.HPLC of Formula: 7789-45-9

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

《Double-external-field enables bulk controlled radical polymerization with narrow molecular weight distribution at high conversion》 was written by Bian, Chao; Zhou, Yin-Ning; Luo, Zheng-Hong. Application of 7789-45-9 And the article was included in AIChE Journal in 2020. The article conveys some information:

To control over mol. weight and its distribution in bulk controlled radical polymerization (CRP) at high conversion remains a challenge. Currently, there are few reports about bulk CRP regulated by external field. In this work, a new strategy combining external fields of light and ultrasound, namely double-external-field, is reported to overcome the challenge. Light irradiation directly reduces the deactivator CuIIBr2/L in the presence of free amine ligand, while ultrasonic agitation improves the homogeneity of the system and moderates the diffusional limitations on activation-deactivation and termination processes. Bulk polymerizations of Me acrylate (MA) were conducted in a controlled manner at conversion over 90%, producing PMA with low dispersities (D = 1.05-1.07) and good retention of chain-end functionality (77%). In addition, good control over the polymerizations for Me methacrylate (MMA) and styrene was obtained, although the chain-end functionality of PMMA-Br requires further improvement. It is believed that this as-developed double-external-field regulation strategy is also applicable to other light induced bulk RDRP systems to improve the controllability. In the experiment, the researchers used Cupric bromide(cas: 7789-45-9Application of 7789-45-9)

Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.Application of 7789-45-9

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

In 2022,Gorai, Sudip; Junghare, Vivek; Kundu, Kshama; Gharui, Sowmomita; Kumar, Mukesh; Patro, Birija Sankar; Nayak, Sandip K.; Hazra, Saugata; Mula, Soumyaditya published an article in ChemMedChem. The title of the article was 《Synthesis of Dihydrobenzofuro[3,2-b]chromenes as Potential 3CLpro Inhibitors of SARS-CoV-2: A Molecular Docking and Molecular Dynamics Study》.Application In Synthesis of Cupric bromide The author mentioned the following in the article:

The recent emergence of pandemic of coronavirus (COVID-19) caused by SARS-CoV-2 has raised significant global health concerns. More importantly, there is no specific therapeutics currently available to combat against this deadly infection. The enzyme 3-chymotrypsin-like cysteine protease (3CLpro) is known to be essential for viral life cycle as it controls the coronavirus replication. 3CLpro could be a potential drug target as established before in the case of severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV). In the current study, we wanted to explore the potential of fused flavonoids as 3CLpro inhibitors. Fused flavonoids (5a,10a-dihydro-11H-benzofuro[3,2-b]chromene) are unexplored for their potential bioactivities due to their low natural occurrences. Their synthetic congeners are also rare due to unavailability of general synthetic methodol. Here we designed a simple strategy to synthesize 5a,10a-dihydro-11H-benzofuro[3,2-b]chromene skeleton and it′s four novel derivatives Our structural bioinformatics study clearly shows excellent potential of the synthesized compounds in comparison to exptl. validated inhibitor N3. Moreover, in-silico ADMET study displays excellent druggability and extremely low level of toxicity of the synthesized mols. Further, for better understanding, the mol. dynamic approach was implemented to study the change in dynamicity after the compounds bind to the protein. A detailed investigation through clustering anal. and distance calculation gave us sound comprehensive data about their mol. interaction. In summary, we anticipate that the currently synthesized mols. could not only be a potential set of inhibitors against 3CLpro but also the insights acquired from the current study would be instrumental in further developing novel natural flavonoid based anti-COVID therapeutic spectra. In addition to this study using Cupric bromide, there are many other studies that have used Cupric bromide(cas: 7789-45-9Application In Synthesis of Cupric bromide) was used in this study.

Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.Application In Synthesis of Cupric bromide

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

Quality Control of Cupric bromideIn 2021 ,《A one-step synthesis of ultra-long silver nanowires with ultra-high aspect ratio above2000 and its application in flexible transparent conductive electrodes》 was published in Nanotechnology. The article was written by Zhang, Lu; Jiang, Fuliang; Wu, Bisheng; Lv, Chencheng; Wu, Minghua. The article contains the following contents:

Silver nanowires (AgNWs), appear as an extremely promising candidate for the next generation of flexible transparent conductive electrodes (FTCEs). However, the performance of AgNWs-FTCEs was severely limited by the aspect ratio of AgNWs, while it was still a big challenge to fabricate AgNWs with high aspect ratio nowadays. To improve the aspect ratio of AgNWs, bromide ion (Br-), cupric ion (Cu2+) and polyvinylpyrrolidone (PVP, Mw≈1300 000) which are beneficial for the synthesis of high aspect ratio AgNWs, were introduced in this article. The high quality and uniform AgNWs with the average diameter of 77.6 nm and the aspect ratio above 2000 were fabricated via a one-step solvothermal method. The effects of reaction time, molar ratio of AgNO3 to PVP and the concentration of CuBr2 on the aspect ratio of AgNWs were discussed. The mechanism of the synthesis of high aspect ratio AgNWs was explored. After that, the prepared AgNWs were spin-coated on the surface of PET film, the FTCEs based on the ultra-high aspect ratio AgNWs without any post-treatments exhibits relatively high transmittance, low haze and low sheet resistance, and the AgNWs have little effect on the optical performance of pristine PET film. The outstanding performance of the prepared FTCEs indicated that the ultra-high aspect ratio AgNWs are ideal materials in the application of FTCEs, and the method of fabricating AgNWs could provide a direction to the high aspect ratio AgNWs. The experimental part of the paper was very detailed, including the reaction process of Cupric bromide(cas: 7789-45-9Quality Control of Cupric bromide)

Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.Quality Control of Cupric bromide

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

In 2019,RSC Advances included an article by Ueoka, Naoki; Oku, Takeo; Suzuki, Atsushi. Reference of Cupric bromide. The article was titled 《Additive effects of alkali metals on Cu-modified CH3NH3PbI3-δClδ photovoltaic devices》. The information in the text is summarized as follows:

We investigated the addition of alkali metal elements (namely Na+, K+, Rb+, and Cs+) to Cu-modified CH3NH3PbI3-δClδ photovoltaic devices and their effects on the photovoltaic properties and electronic structure. The open-circuit voltage was increased by CuBr2 addition to the CH3NH3PbI3-δClδ precursor solution The series resistance was decreased by simultaneous addition of CuBr2 and RbI, which increased the external quantum efficiencies in the range of 300-500 nm, and the short-circuit c.d. The energy gap of the perovskite crystal increased through CuBr2 addition, which we also confirmed by first-principles calculations Charge carrier generation was observed in the range of 300-500 nm as an increase of the external quantum efficiency, owing to the partial d. of states contributed by alkali metal elements. Calculations suggested that the Gibbs energies were decreased by incorporation of alkali metal elements into the perovskite crystals. The conversion efficiency was maintained for 7 wk for devices with added CuBr2 and RbI. In the experimental materials used by the author, we found Cupric bromide(cas: 7789-45-9Reference of Cupric bromide)

Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.Reference of Cupric bromide

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

《Surface composition dominates the electrocatalytic reduction of CO2 on ultrafine CuPd nanoalloys》 was published in Carbon Energy in 2020. These research results belong to Chen, Dong; Wang, Yanlei; Liu, Danye; Liu, Hui; Qian, Cheng; He, Hongyan; Yang, Jun. SDS of cas: 13395-16-9 The article mentions the following:

Tuning the surface composition of noble metal nanoparticles by alloying with other metals represents a powerful strategy to boost their electrocatalytic selectivity. In this report, ultrafine CuPd nanoalloys with the particle size of ca. 2 nm are synthesized based on the galvanic replacement reaction between presynthesized Cu nanoparticles and Pd2+ precursors, and the tuning of their surface compositions is also achieved by changing the atom ratios of Cu/Pd. For the electrocatalytic reduction of CO2, Cu5Pd5 nanoalloys show the CO Faradaic efficiency (FE) of 88% at -0.87 V, and the corresponding mass activity reaches 56 A/g that is much higher than those of Cu8Pd2 nanoalloys, Cu3Pd7 nanoalloys and most of previously reported catalysts. D. functional theory uncovers that with the increase of Pd on the surface of the ultrafine CuPd nanoalloys, the adsorbed energy of both of intermediate COOH* and CO* to the Pd sites is strengthened. The Cu5Pd5 nanoalloys with the optimal surface composition better balance the adsorption of COOH* and desorption of CO*, achieving the highest selectivity and activity. The difficult liberation of absorbed CO* on the surface of Cu3Pd7 nanoalloys provides carbon source to favor the production of ethylene, endowing the Cu3Pd7 nanoalloys with the highest selectivity for ethylene among these ultrafine CuPd nanoalloys. The experimental process involved the reaction of Bis(acetylacetone)copper(cas: 13395-16-9SDS of cas: 13395-16-9)

Bis(acetylacetone)copper(cas: 13395-16-9) is used as PVC stabilizer, and curing agents for epoxy resins, acrylic adhesives and silicone rubbers. It is also used as solvents, lubricant additives, paint drier, and pesticides.SDS of cas: 13395-16-9

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

Tevenot, Quentin; Kawahara, Seiichi published their research in Langmuir in 2021. The article was titled 《ATRP-ARGET of a Styrene Monomer onto Modified Natural Rubber Latex as an Initiator》.Synthetic Route of Br2Cu The article contains the following contents:

Atom transfer radical polymerization with an activator regenerated by electron transfer (ATRP-ARGET) was performed for graft copolymerization of styrene onto natural rubber in the latex stage as a heterogeneous system. Deproteinized and subsequently brominated natural rubber particles in the latex stage were subjected to graft copolymerization of styrene on their surfaces in the presence of an activated ATRP catalyst. 1H NMR spectroscopy and size exclusion chromatog. (SEC) characterized the particles. Ozonolysis was performed to deduct the polyisoprene contribution to SEC. Graft copolymerization in heterogeneous media by extraction with an acetone/2-butanone solution Both the linear evolution of the mol. weight vs. monomer conversion and the high grafting efficiency associated with a narrow mol. weight distribution of the resulting grafted polystyrene confirm a living radical behavior.Cupric bromide(cas: 7789-45-9Synthetic Route of Br2Cu) was used in this study.

Cupric bromide(cas: 7789-45-9) can be used as reducing agent, when complexed by three molecules of pyridine initiators for the controlled polymerization of styrene, methyl acrylate and methyl methacrylate.Synthetic Route of Br2Cu

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

《Yttrium doped copper (II) oxide hole transport material as efficient thin film transistor》 was written by Baig, Sadia; Kumar, Pankaj; Ngai, Jenner; Li, Yuning; Ahmed, Safeer. Recommanded Product: Bis(acetylacetone)copperThis research focused ontransistor thin film yttrium doped copper oxide hole transport; copper oxide; doping; thin films; transistor; yttrium.. The article conveys some information:

This work reports development of yttrium doped copper oxide (Y-CuO) as a new hole transport material with supplemented optoelectronic character. The pure and Y-doped CuO thin films are developed through a solid-state method at 200°C and recognized as high performance p-channel inorganic thin film transistors (TFTs). CuO is formed by oxidative decomposition of copper acetylacetonate, yielding 100 nm thick and conductive (40.9 S cm-1) compact films with a band gap of 2.47 eV and charge carrier d. of ∼1.44×1019 cm-3. Yttrium doping generates denser films, Cu2Y2O5 phase in the lattice, with a wide band gap of 2.63 eV. The elec. conductivity increases 9-fold on 2% Y addition to CuO, and the carrier d. increases to 2.97×1021 cm-3, the highest reported so far. The TFT devices perform remarkably with high field-effect mobility (μsat) of 3.45 cm2 V-1 s-1 and 5.3 cm2 V-1 s-1, and considerably high current-on/off ratios of 0.11×104 and 9.21×104, for CuO and Y-CuO films, resp. (at -1 V operating voltage). A very small width hysteresis, 0.01 V for CuO and 1.92 V for 1% Y-CuO, depict good bias stability. Both the devices work in enhancement mode with stable output characteristics for multiple forward sweeps (5 to -60 V) at -1Vg. In the experiment, the researchers used many compounds, for example, Bis(acetylacetone)copper(cas: 13395-16-9Recommanded Product: Bis(acetylacetone)copper)

Bis(acetylacetone)copper(cas: 13395-16-9) catalyzes coupling and carbene transfer reactions. Metal acetylacetonates are used as catalysts for polymerization of olefins and transesterification. Recommanded Product: Bis(acetylacetone)copper

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

《Interplay of Composition, pH, and Temperature on the Conformation of Multi-stimulus-responsive Copolymer Brushes: Comparison of Experiment and Theory》 was published in Langmuir in 2020. These research results belong to Johnson, Edwin C.; Willott, Joshua D.; de Vos, Wiebe M.; Wanless, Erica J.; Webber, Grant B.. Related Products of 7789-45-9 The article mentions the following:

Poly(2-(2-methoxyethoxy) Et methacrylate) (PMEO2MA), a thermoresponsive polymer with a lower critical solution temperature of ∼28°C, and poly(2-(diethylamino)ethyl methacrylate) (PDEA), a weak polybase with an apparent pKa of ∼7.5, were statistically copolymerized using ARGET ATRP to form multi-stimulus responsive polymer brushes. The stimulus responsive behavior of these brushes has been investigated with ellipsometry and numerical SCF (nSCF) theory. The pH and thermoresponsive behavior of a PDEA homopolymer brush was investigated exptl. in order to benchmark the nSCF theory calculations nSCF theory was able to reproduce the responsive behavior of PDEA and PMEO2MA homopolymer brushes. Three copolymer compositions (90:10, 70:30, 50:50 mol% MEO2MA:DEA) were investigated exptl. with pH ramps performed at low and high temperatures and temperature ramps performed at low and high pH. A broader range of compositions were investigated with nSCF theory and compared to the exptl. results, with the nSCF calculations able to capture the general behavior of the homopolymer and copolymer brushes. The responsive behavior of each brush to a given stimulus (temperature or pH) was dependent on both the polymer composition and environment (temperature or pH). The influence of pH on the brush increased with higher DEA mol% with copolymer brush response transitioning from temperature dominant to pH dominant. The temperature response of PMEO2MA was completely masked at low and high pH values by the presence of at least 30 mol% of polybase in the copolymer. In the experiment, the researchers used Cupric bromide(cas: 7789-45-9Related Products of 7789-45-9)

Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.Related Products of 7789-45-9

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

Li, Hang; Li, Mingqiang; Li, Tong published their research in Materials Letters in 2021. The article was titled 《A novel rechargeable metal halides battery with ethylene glycol cyclic sulfate electrolyte system》.Name: Cupric bromide The article contains the following contents:

Metal halides have become the research topic of battery due to their high energy d. In our work, we synthesized ethylene glycol cyclic sulfate (egcs) as the electrolyte solvent through a simple one-step hydrothermal reaction, and for the first time proposed a new non-toxic rechargeable copper bromide (CuBr2) battery with a complete system. After testing, the specific capacity of the CuBr2-battery with the electrolyte of this system can reach 200 mAh g-1cb at the charging and discharging c.d. of 2 A g-1. The specific capacity can still reach 142 mAh g-1cb after 8000 cycles. In addition, the reaction mechanism of CuBr2-battery was verified by XPS, IR, MS and XRD characterization. The experimental part of the paper was very detailed, including the reaction process of Cupric bromide(cas: 7789-45-9Name: Cupric bromide)

Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.Name: Cupric bromide

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