Category: 143-24-8

Barannikov, Vladimir P. published the artcileEffect of Solvent Polarity on Enthalpies of Solvation of Ethylene Oxide Oligomers, Safety of 2,5,8,11,14-Pentaoxapentadecane, the main research area is solvent polarity effect solvation enthalpy ethylene oxide oligomer.

The enthalpies of dissolution, ΔsolHm∞, and solvation, ΔsolvHm∞, of ether oligomers CH3O(CH2CH2O)nCH3 (n = 1-4) in Et acetate, pyridine, N,N-dimethylformamide, and acetonitrile have been determined from calorimetric measurements at 298.15 K. The values of group contributions of repeated ether units and monoether fragment have been compared on the basis of the additive method. The contributions of ether group to ΔsolvHm∞ for oligomeric and monomeric mols. coincide within their uncertainties for solutions in highly polar solvents, in contrast to non-polar, moderately polar, and H-bonding solvents. The dependence of ether group contributions to ΔsolvHm∞ on the electron pair acceptance index of solvents ETN has been considered.

Journal of Chemical & Engineering Data published new progress about Evaporation enthalpy. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Safety of 2,5,8,11,14-Pentaoxapentadecane.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Singh Syali, Mohanjeet published the artcileStudies on a novel Na+ superionic conducting polymer gel cocktail electrolyte membrane immobilizing molecular liquid mixture of carbonates, tetraglyme and ionic liquid, Quality Control of 143-24-8, the main research area is superionic conducting polymer gel carbonates tetraglyme ionic liquid.

Novel Na+ superionic conducting polymer gel cocktail electrolyte membranes immobilizing mol. liquid mixture of carbonates, tetraglyme and ionic liquid have been prepared by solution cast method. The optimized free standing electrolyte membrane offers ionic conductivity of 3.3 x 10-3 S cm-1 and sodium-ion transport number of 0.31 at ambient temperature The detailed ion-dynamics have been investigated with the help of frequency dependent dielec. and modulus studies. The possible interaction of these mol. liquids with sodium tetrafluoroborate salt and poly(vinylidiene fluoride-hexafluoropropylene) polymer host is investigated by FTIR studies. The DSC study confirms that the electrolyte system maintains the gel phase up to ∼ 120°C. The linear sweep voltammetry reveal the working voltage range offered by the electrolyte system to be 3.46 V. The Elec. double layer capacitor (EDLC) cell with optimized electrolyte membrane and electrodes of activated carbon demonstrate the specific discharge capacity of ∼ 60F g-1 and drops negligibly with cycle number The reported Na+ superionic conducting cocktail electrolyte system can be utilized as an electrolyte while fabricating electrochem. devices especially the EDLCs.

Journal of Molecular Liquids published new progress about Carbonates Role: PEP (Physical, Engineering or Chemical Process), PROC (Process). 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Quality Control of 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Walus, Sylwia published the artcileElectrochemical impedance spectroscopy study of lithium-sulfur batteries: Useful technique to reveal the Li/S electrochemical mechanism, Name: 2,5,8,11,14-Pentaoxapentadecane, the main research area is electrochem impedance lithium sulfur battery.

Electrochem. impedance spectroscopy (EIS) study was done to go deeper into the electrochem. processes of Li/S battery in a common CR2032 coin-type cell. To sep. the contributions of each electrode (i. e. Li neg. electrode and S composite pos. electrode), impedance measurements on sym. cells consisting of two previously cycled electrodes was used. This methodol. enables to propose an overall interpretation of the different electrochem. phenomena present during cycling. Low temperature tests were also applied, which brought fruitful information concerning the kinetics of the reactions and allowed to confirm the chem.-phys. interpretations performed on the cell cycled at 25°.

Electrochimica Acta published new progress about Carbon fibers, fabrics Role: TEM (Technical or Engineered Material Use), USES (Uses). 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Name: 2,5,8,11,14-Pentaoxapentadecane.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Zheng, Ruixin published the artcileOxygen vacancy engineering of vertically aligned NiO nanosheets for effective CO2 reduction and capture in Li-CO2 battery, Computed Properties of 143-24-8, the main research area is oxygen vacancy vertically aligned nickel oxide nanosheet; carbon dioxide reduction capture lithium battery.

The Li-CO2 battery with the concept of turning waste into treasure has aroused great scientific research enthusiasm recently, but unfortunately it is a long shot for the large-scale applications of Li-CO2 battery due to its huge overpotential and poor cycling life at current stage. Herein, NiO nanosheets engineered by O vacancy growing vertically on C clothes (NiO-Vo@CC) was developed as viable catalyst for both CO2 reduction reaction (CO2RR) and CO2 evolution reaction (CO2ER) in Li- CO2 system. The O vacancy decorated by surplus electron will not only work as electron donor (Lewis base) surface to activated the electron-deficient C atom in CO2 but also narrow the band gap of NiO, therefore optimized CO2 conversion kinetic can be obtained by using defective NiO-Vo@CC electrode. The use of defect engineering to achieve performance improvement in aprotic Li-CO2 battery is still in its infancy at current stage and thus the authors’ research initially corroborates that modulation of the surface property via defect engineering can serve as valid strategy to design high performance electrodes for Li-CO2 battery.

Electrochimica Acta published new progress about Crystal vacancies (oxygen). 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Computed Properties of 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Benkovics, Tamas published the artcileDiverse Catalytic Reactions for the Stereoselective Synthesis of Cyclic Dinucleotide MK-1454, Quality Control of 143-24-8, the main research area is transition metal thiophosphate enzyme catalytic stereoselective synthesis cyclization nucleotide; STING gene agonist cyclic dinucleotide MK1454 stimulator thiophosphate fluorination.

As practitioners of organic chem. strive to deliver efficient syntheses of the most complex natural products and drug candidates, further innovations in synthetic strategies are required to facilitate their efficient construction. These aspirational breakthroughs often go hand-in-hand with considerable reductions in cost and environmental impact. Enzyme-catalyzed reactions have become an impressive and necessary tool that offers benefits such as increased selectivity and waste limitation. These benefits are amplified when enzymic processes are conducted in a cascade in combination with novel bond-forming strategies. In this article, we report a highly diastereoselective synthesis of MK-1454, a potent agonist of the stimulator of interferon gene (STING) signaling pathway. The synthesis begins with the asym. construction of two fluoride-bearing deoxynucleotides. The routes were designed for maximum convergency and selectivity, relying on the same benign electrophilic fluorinating reagent. From these complex subunits, four enzymes are used to construct the two bridging thiophosphates in a highly selective, high yielding cascade process. Critical to the success of this reaction was a thorough understanding of the role transition metals play in bond formation.

Journal of the American Chemical Society published new progress about Cyclization. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Quality Control of 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ren, Muqing published the artcileBioinspired Redox Mediator in Lithium-Oxygen Batteries, SDS of cas: 143-24-8, the main research area is superoxide dismutase biomimetic redox mediator activated charcoal.

LiO2 is an intermediate formed in aprotic Li-O2 and Li-air batteries during an oxygen reduction reaction (ORR). The soluble LiO2 triggers undesirable side reactions, such as a nucleophilic reaction and the formation of the byproduct Li2CO3 upon reaction with the electrolyte and substrate, resulting in irreversible redox reactions and causing a low Coulombic efficiency with poor cycling durability. Inspired by superoxide dismutase (SOD) in biol. systems, we hypothesized that SOD mimetics could likewise be applied in Li-O2 and Li-air batteries, thereby prolonging the battery cycle life. Oxidized activated charcoal (OAC) is known to be one SOD mimetic with fast kinetics and a high turnover. Therefore, OAC was added to a dual polymer gel electrolyte as a redox mediator. The OAC redox mechanism is well illustrated in quasi-solid Li-O2 batteries, and the battery stability was significantly improved in the presence of OAC. Furthermore, the best Li-O2 battery containing OAC demonstrated stable galvanostatic charge/discharge performance for ~300 cycles (3000 h) with a cutoff capacity of 0.4 mAh cm-2. In addition, under a discharge cutoff potential of 2.0 V, the discharge capacity of the best Li-O2 battery is ~37.0 mAh cm-2.

ACS Catalysis published new progress about Biomimetics. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, SDS of cas: 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Konishi, Hiroaki published the artcileCharge and Discharge Reactions of a Lead Fluoride Electrode in a Liquid-Based Electrolyte for Fluoride Shuttle Batteries:-The Role of Triphenylborane as an Anion Acceptor-, Synthetic Route of 143-24-8, the main research area is lead fluoride liquid triphenylborane anion charge discharge.

Lead fluoride (PbF2) is a promising electrode material for fluoride shuttle batteries (FSBs) owing to its high theor. capacity (219 mAh g-1). In this study, the discharge and charge capacities of a PbF2 electrode were measured using a bis[2-(2-methoxyethoxy)ethyl] ether containing cesium fluoride and triphenylborane as an electrolyte. A high specific capacity was maintained during both the discharge and charge processes in the first cycle, but the capacity decreased from the first charge process to the following discharge process. To clarify the electrochem. reaction mechanism, the dissolution and change in the electronic state of Pb at the PbF2 electrode during the discharge and charge processes were evaluated via at. absorption spectrometry (AAS) and XPS. The results obtained from AAS and XPS indicated that Pb was formed during the discharge process. Conversely, the formation of PbF2 and dissolution of Pb coexisted within the wide range of charge process. The PbF2 could react in the following cycle, but the dissolved Pb was unable to contribute to the following discharge/charge reaction. Therefore, after the initial charge process, the capacity decreased.

ChemistrySelect published new progress about Enthalpy Role: PRP (Properties), TEM (Technical or Engineered Material Use), USES (Uses). 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Synthetic Route of 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Benkovics, Tamas published the artcileDiverse Catalytic Reactions for the Stereoselective Synthesis of Cyclic Dinucleotide MK-1454, Quality Control of 143-24-8, the main research area is transition metal thiophosphate enzyme catalytic stereoselective synthesis cyclization nucleotide; STING gene agonist cyclic dinucleotide MK1454 stimulator thiophosphate fluorination.

As practitioners of organic chem. strive to deliver efficient syntheses of the most complex natural products and drug candidates, further innovations in synthetic strategies are required to facilitate their efficient construction. These aspirational breakthroughs often go hand-in-hand with considerable reductions in cost and environmental impact. Enzyme-catalyzed reactions have become an impressive and necessary tool that offers benefits such as increased selectivity and waste limitation. These benefits are amplified when enzymic processes are conducted in a cascade in combination with novel bond-forming strategies. In this article, we report a highly diastereoselective synthesis of MK-1454, a potent agonist of the stimulator of interferon gene (STING) signaling pathway. The synthesis begins with the asym. construction of two fluoride-bearing deoxynucleotides. The routes were designed for maximum convergency and selectivity, relying on the same benign electrophilic fluorinating reagent. From these complex subunits, four enzymes are used to construct the two bridging thiophosphates in a highly selective, high yielding cascade process. Critical to the success of this reaction was a thorough understanding of the role transition metals play in bond formation.

Journal of the American Chemical Society published new progress about Cyclization. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Quality Control of 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ren, Muqing published the artcileBioinspired Redox Mediator in Lithium-Oxygen Batteries, SDS of cas: 143-24-8, the main research area is superoxide dismutase biomimetic redox mediator activated charcoal.

LiO2 is an intermediate formed in aprotic Li-O2 and Li-air batteries during an oxygen reduction reaction (ORR). The soluble LiO2 triggers undesirable side reactions, such as a nucleophilic reaction and the formation of the byproduct Li2CO3 upon reaction with the electrolyte and substrate, resulting in irreversible redox reactions and causing a low Coulombic efficiency with poor cycling durability. Inspired by superoxide dismutase (SOD) in biol. systems, we hypothesized that SOD mimetics could likewise be applied in Li-O2 and Li-air batteries, thereby prolonging the battery cycle life. Oxidized activated charcoal (OAC) is known to be one SOD mimetic with fast kinetics and a high turnover. Therefore, OAC was added to a dual polymer gel electrolyte as a redox mediator. The OAC redox mechanism is well illustrated in quasi-solid Li-O2 batteries, and the battery stability was significantly improved in the presence of OAC. Furthermore, the best Li-O2 battery containing OAC demonstrated stable galvanostatic charge/discharge performance for ~300 cycles (3000 h) with a cutoff capacity of 0.4 mAh cm-2. In addition, under a discharge cutoff potential of 2.0 V, the discharge capacity of the best Li-O2 battery is ~37.0 mAh cm-2.

ACS Catalysis published new progress about Biomimetics. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, SDS of cas: 143-24-8.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

These common heterocyclic compound, 143-24-8, name is 2,5,8,11,14-Pentaoxapentadecane, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. Quality Control of 2,5,8,11,14-Pentaoxapentadecane

Comparative Example 1 was conducted in the same manner as in Example 1 except that 4 mmole of 3-hydroxypyridine was used as promoter instead of imidazole and except the reaction conditions. 1 mmole of Co2(CO)8 was used and 200 mmole of ethylene oxide was used. The reaction conditions of Comparative Example 1 were shown in Table 2.

The synthetic route of 2,5,8,11,14-Pentaoxapentadecane has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Samsung Electronics Co. Ltd.; US6348632; (2002); B1;,
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem