Tag: 124.1158

Decreasing the initial irreversible capacity loss by addition of cyclic sulfate as electrolyte additives was written by Sano, Atsushi;Maruyama, Satoshi. And the article was included in Journal of Power Sources in 2009.Category: benzothiophene This article mentions the following:

Initial irreversible capacity loss in graphite electrodes was suppressed by 1,3,2-dioxathiolane-2,2-dioxide and its derivatives (cyclic sulfates) in propylene carbonate (PC) containing electrolyte. Cyclic voltammetry (CV) showed that cyclic sulfates were decomposed at higher potentials than that for electrolyte solvents. In galvanostatic charge and discharge measurement, first cycle efficiency was increased from 58.2% to 90.5% by the addition of 1,3,2-dioxathiolane-2,2-dioxide. Passivation films formed by cyclic sulfates were observed by XPS, FT-IR, and pyrolysis/GC/MS (pyro/GC/MS). These results indicate that the surface was covered by a PEO like polymer with the inner layer comprised of Li₂S like compounds In the experiment, the researchers used many compounds, for example, 1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3Category: benzothiophene).

1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3) belongs to benzothiophene derivatives. Benzothiophene is used as starting material for the synthesis of bioactive molecules. The core structure is a part of various pharmaceutical substances and natural products. It is also used in the manufacturing of dyes such as thioindigo.Category: benzothiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Synthesis of 2-(perfluoroalkyl)ethyl potassium sulfates based on perfluorinated Grignard reagents was written by Paterova, Jana;Skalicky, Martin;Rybackova, Marketa;Kvicalova, Magdalena;Cvacka, Josef;Kvicala, Jaroslav. And the article was included in Journal of Fluorine Chemistry in 2010.Quality Control of 1,3,2-Dioxathiolane 2,2-dioxide This article mentions the following:

The first example of nucleophilic substitution with perfluoroalkyl Grignard reagents on the sp³ carbon center is described. Thus, a series of organometals R_F-MgBr, prepared from perfluorinated alkyl iodides with alkyl group = C₄F₉, C₆F₁₃, C₈F₁₇, C₁₀F₂₁ and C₁₂F₂₅, reacted with 1,3,2-dioxathiolane-2,2-dioxide to afford the corresponding 2-(perfluoroalkyl)ethyl magnesium sulfates, which were isolated after metathesis to the corresponding potassium salts. In the model reaction, perfluorohexylmagnesium iodide was reacted with Me triflate yielding polyfluorinated alkane. The attempts to extend the reaction to 1,3,2-dioxathiane-2,2-dioxide were unsuccessful due to its inferior reactivity and only reduced polyfluoroalkane and the product of coupling were detected in the reaction mixture Polyfluorinated sulfates are easily hydrolyzed with hydrochloric or triflic acid to the corresponding alcs., which is an alternative to standard transformation of perfluoroalkyl iodides to 2-(perfluoroalkyl)ethanols. Quantum-chem. calculations of the PES of the reaction with both sulfur-containing heterocycles found that the failure of the reaction with 1,3,2-dioxathiane-2,2-dioxide is caused by higher activation energy of the process. In the experiment, the researchers used many compounds, for example, 1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3Quality Control of 1,3,2-Dioxathiolane 2,2-dioxide).

1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.Quality Control of 1,3,2-Dioxathiolane 2,2-dioxide

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Optimization of synthesis process of 1,3,2-dioxathiolane 2,2-dioxide was written by Wang, Peihong;Zhang, Nan;Zhou, Baoqiang;Gao, Ruichang. And the article was included in Huagong Jinzhan in 2016.Safety of 1,3,2-Dioxathiolane 2,2-dioxide This article mentions the following:

1,3,2-Dioxathiolane 2,2-dioxide is synthesized from ethylene glycol and thionyl chloride in the presence of ruthenium trichloride heterogeneous catalyst and oxidant, and characterized by ¹H NMR and IR. The effects of different oxidants, molar ratio of raw materials, reaction temperature, reaction time, oxidant dosage and catalyst dosage on the yield of target product are investigated. The optimal reaction conditions contain sodium periodate as oxidant, thionyl chloride:ethylene glycol molar ratio of 1.2:1, sodium periodate:ethylene glycol mass ratio of 3:1, catalyst:ethylene glycol mass ratio of 0.002:1, reaction temperature of 40°C and reaction time of 60 min. Under the optimal reaction conditions, the yield of target product reaches 81.25%. The synthesis process has advantages of fewer byproducts, lower toxicity and higher yield, and is more valuable in practical application. In the experiment, the researchers used many compounds, for example, 1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3Safety of 1,3,2-Dioxathiolane 2,2-dioxide).

1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, sertaconazole, and also BTCP.Safety of 1,3,2-Dioxathiolane 2,2-dioxide

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Effect of LiPF₆ concentration in Li[Ni_0.4Mn_0.4Co_0.2]O₂/graphite pouch cells operated at 4.5 V was written by Petibon, R.;Madec, L.;Abarbanel, D. W.;Dahn, J. R.. And the article was included in Journal of Power Sources in 2015.Application In Synthesis of 1,3,2-Dioxathiolane 2,2-dioxide This article mentions the following:

The effect of LiPF₆ concentration in the 1 M-2.5 M range was studied in Li[Ni_0.4Mn_0.4Co_0.2O]₂ (NMC(442))/graphite and LaPO₄ coated-NMC(442)/graphite pouch cells cycled to high voltage. Electrochem. impedance spectroscopy on sym. cells revealed that the dramatic impedance growth observed in NMC(442)/graphite cells cycled to high voltage comes from the interface impedance of the pos. electrode. The use of high LiPF₆ concentrations in the 2-2.5 M range dramatically slowed down the impedance growth of both coated and uncoated NMC(442)/graphite cells containing certain electrolyte additive blends and cycled to high voltage. However no beneficial effect was observed in control cells containing no electrolyte additive. X-ray photoelectron spectra of cycled electrodes of coated-NMC(442)/graphite cells showed that LiPF₆ concentration greatly affected the composition of the solid electrolyte interphase of both the pos. and neg. electrodes of cells containing additives. In the experiment, the researchers used many compounds, for example, 1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3Application In Synthesis of 1,3,2-Dioxathiolane 2,2-dioxide).

1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3) belongs to benzothiophene derivatives. Benzothiophene is a fused ring compound of thiophene ring and benzene ring, which is an important class of heterocycles with advantageous structures. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Application In Synthesis of 1,3,2-Dioxathiolane 2,2-dioxide

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Optimization of the metabolic stability of a fluorinated cannabinoid receptor subtype 2 (CB₂) ligand designed for PET studies was written by Heimann, Dominik;Boergel, Frederik;de Vries, Henk;Patberg, Marius;Jan-Smith, Eliot;Frehland, Bastian;Schepmann, Dirk;Heitman, Laura H.;Wuensch, Bernhard. And the article was included in European Journal of Medicinal Chemistry in 2018.Computed Properties of C2H4O4S This article mentions the following:

The central CB₂ receptor represents a promising target for the treatment of neuroinflammatory diseases as CB₂ activation mediates anti-inflammatory effects. Recently, the F-18 labeled PET radiotracer [¹⁸F]7a was reported, which shows high CB₂ affinity and high selectivity over the CB₁ subtype but low metabolic stability due to hydrolysis of the amide group. Based on these findings twelve bioisosteres of 7a were synthesized containing a non-hydrolysable functional group instead of the amide group. The secondary amine 23a (K_i=7.9nM) and the ketone 26a (K_i=8.6nM) displayed high CB₂ affinity and CB₂:CB₁ selectivity in in vitro radioligand binding studies. Incubation of 7a, 23a and 26a with mouse liver microsomes and LC-quadrupole-MS anal. revealed a slightly higher metabolic stability of secondary amine 23a, but a remarkably higher stability of ketone 26a in comparison to amide 7a. Furthermore, a logD_7.4 value of 5.56±0.08 was determined for ketone 26a by micro shake-flask method and LC-MS quantification. In the experiment, the researchers used many compounds, for example, 1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3Computed Properties of C2H4O4S).

1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The electrophilic substitution of benzothiophene systems is much less regioselective than that of indoles. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, sertaconazole, and also BTCP.Computed Properties of C2H4O4S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Designer Cathode Additive for Stable Interphases on High-Energy Anodes was written by Tian, Mengyu;Ben, Liubin;Yu, Hailong;Song, Ziyu;Yan, Yong;Zhao, Wenwu;Armand, Michel;Zhang, Heng;Zhou, Zhi-Bin;Huang, Xuejie. And the article was included in Journal of the American Chemical Society in 2022.Recommanded Product: 1,3,2-Dioxathiolane 2,2-dioxide This article mentions the following:

Rechargeable lithium-based batteries built with high-energy anode materials (e.g., silicon-based and silicon-derivative materials) are considered a feasible solution to satisfy the stringent requirements imposed by emerging markets, including elec. vehicles and grid storage, due to their higher energy d. compared to contemporary lithium-ion batteries. The robustness of the solid electrolyte interphase (SEI) layer on high-energy anodes is critical to achieve long-term and stable cycling performances of the batteries. Herein, we propose a new type of designer cathode additive (DCA), i.e., an ultrathin coating layer of elemental sulfur on the cathode, for the in situ formation of a thin and robust SEI layer on various types of high-energy anodes. The DCA elemental sulfur undergoes simultaneous oxidation and reduction paths, forming lithium alkyl sulfate (R-OSO₂OLi) and poly(ethylene oxide) (PEO)-like polymers on the anode surface. The as-formed R-OSO₂OLi/PEO-modified SEI layer has good lithium cation (Li⁺) permeability to facilitate fast ion transportation across the interphases and superior elasticity to adapt to large volume changes, which is particularly effective for improving the cycling efficiency of high-energy anodes (e.g., ca. 14-35% increase in capacity retention for the silicon-carbon composite (SiC) or silicon-tin alloy (Si-Sn)||LiFePO₄ cells). The present work opens a new avenue toward the practical deployment of high-energy rechargeable lithium-based batteries. In the experiment, the researchers used many compounds, for example, 1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3Recommanded Product: 1,3,2-Dioxathiolane 2,2-dioxide).

1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The electrophilic substitution of benzothiophene systems is much less regioselective than that of indoles. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Recommanded Product: 1,3,2-Dioxathiolane 2,2-dioxide

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Catalytic promiscuity enabled by photoredox catalysis in nicotinamide-dependent oxidoreductases was written by Biegasiewicz, Kyle F.;Cooper, Simon J.;Emmanuel, Megan A.;Miller, David C.;Hyster, Todd K.. And the article was included in Nature Chemistry in 2018.SDS of cas: 1072-53-3 This article mentions the following:

Strategies that provide enzymes with the ability to catalyze non-natural reactions are of considerable synthetic value. Photoredox catalysis has proved adept at expanding the synthetic repertoire of existing catalytic platforms, yet, in the realm of biocatalysis it has primarily been used for cofactor regeneration. Here we show that photoredox catalysts can be used to enable new catalytic function in nicotinamide-dependent enzymes. Under visible-light irradiation, xanthene-based photocatalysts enable a double-bond reductase (DBR) to catalyze an enantioselective deacetoxylation. Mechanistic experiments support the intermediacy of an α-acyl radical, formed after the elimination of acetate. Isotopic labeling experiments support nicotinamide as the source of the hydrogen atom. Preliminary calculations and mechanistic experiments suggest that binding to the protein attenuates the reduction potential of the starting material, an important feature for localizing radical formation to the enzyme active site. The generality of this approach is highlighted with the radical dehalogenation of α-bromoamides catalyzed by ketoreductases (KREDs) with Eosin Y as a photocatalyst. In the experiment, the researchers used many compounds, for example, 1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3SDS of cas: 1072-53-3).

1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3) belongs to benzothiophene derivatives. Benzothiophene is used as starting material for the synthesis of bioactive molecules. The core structure is a part of various pharmaceutical substances and natural products. Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.SDS of cas: 1072-53-3

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Ternary Electrolyte Additive Mixtures for Li-Ion Cells that Promote Long Lifetime and Less Reactivity with Charged Electrodes at Elevated Temperatures was written by Ma, Lin;Xia, Jian;Dahn, J. R.. And the article was included in Journal of the Electrochemical Society in 2015.Formula: C2H4O4S This article mentions the following:

Li[Ni_1/3Mn_1/3Co_1/3]O₂ (NMC111)/graphite and Li[Ni_0.42Mn_0.42Co_0.16]O₂ (NMC442)/graphite pouch cells demonstrate superb performance when ternary blends of electrolyte additives are added to the cells. These ternary blends contain one of vinylene carbonate (VC) or prop-1-ene-1,3-sultone (PES) plus a S containing mol. and tris(trimethylsilyl) phosphite (TTSPi). Here, the excellent charge-discharge capacity retention of cells containing these ternary blends of additives is demonstrated at both 45° and 55°C by comparison to cells with only VC or PES additives alone. The impact of a number of S- and phosphorous-containing electrolyte additives on the reactivity of charged electrode materials with electrolyte at elevated temperatures was studied using accelerating rate calorimetry (ARC). The electrolyte additives, methylene methanedisulfonate (MMDS) and TTSPi, dramatically reduce the reactivity between lithiated (charged) graphite and electrolyte. The ternary electrolyte blends of VC + MMDS + TTSPi and PES + MMDS + TTSPi show no reactivity between charged graphite and electrolyte to >200°. By contrast, electrolytes with no additives or with PES alone show significant reactivity with lithiated graphite <200°. NMC/graphite cells with VC + MMDS + TTSPi or PES + MMDS + TTPSi additives will demonstrate long life and excellent safety. In the experiment, the researchers used many compounds, for example, 1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3Formula: C2H4O4S).

1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. It has been used as a raw material for the synthesis of biologically active structures and is found in pharmaceuticals such as leukotriene synthesis inhibitors and antifungals, as well as in many natural products.Formula: C2H4O4S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Surface modification by polyzwitterions of the sulfabetaine-type, and their resistance to biofouling was written by Schoenemann, Eric;Laschewsky, Andre;Wischerhoff, Erik;Koc, Julian;Rosenhahn, Axel. And the article was included in Polymers (Basel, Switzerland) in 2019.Reference of 1072-53-3 This article mentions the following:

Films of zwitterionic polymers are increasingly explored for conferring fouling resistance to materials. Yet, the structural diversity of polyzwitterions is rather limited so far, and clear structure-property relationships are missing. Therefore, we synthesized a series of new polyzwitterions combining ammonium and sulfate groups in their betaine moieties, so-called poly(sulfabetaine)s. Their chem. structures were varied systematically, the monomers carrying methacrylate, methacrylamide, or styrene moieties as polymerizable groups. High molar mass homopolymers were obtained by free radical polymerization Although their solubilities in most solvents were very low, brine and lower fluorinated alcs. were effective solvents in most cases. A set of sulfabetaine copolymers containing about 1 mol % (based on the repeat units) of reactive benzophenone methacrylate was prepared, spin-coated onto solid substrates, and photo-cured. The resistance of these films against the nonspecific adsorption by two model proteins (bovine serum albumin-BSA, fibrinogen) was explored, and directly compared with a set of references The various polyzwitterions reduced protein adsorption strongly compared to films of poly(nbutyl methacrylate) that were used as a neg. control. The poly(sulfabetaine)s showed generally even somewhat higher anti-fouling activity than their poly(sulfobetaine) analogs, though detailed efficacies depended on the individual polymer-protein pairs. Best samples approach the excellent performance of a poly(oligo(ethylene oxide) methacrylate) reference In the experiment, the researchers used many compounds, for example, 1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3Reference of 1072-53-3).

1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3) belongs to benzothiophene derivatives. Benzothiophene finds use in research as a starting material for the synthesis of larger, usually bioactive structures. It is also used in the manufacturing of dyes such as thioindigo.Reference of 1072-53-3

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Synthesis and evaluation of difluorophosphate salt electrolyte additives for lithium-ion batteries was written by Hall, David S.;Hynes, Toren;Aiken, Connor P.;Dahn, J. R.. And the article was included in Journal of the Electrochemical Society in 2020.Name: 1,3,2-Dioxathiolane 2,2-dioxide This article mentions the following:

The electrolyte additive lithium difluorophosphate improves the lifetime of lithium-ion cells. This work presents the synthesis and evaluation of alternative difluorophosphate salt electrolyte additives. Ammonium difluorophosphate is readily prepared via a solidstate, benchtop reaction of ammonium fluoride and phosphorus pentoxide that requires only gentle heating to initiate. The best yield of sodium difluorophosphate (NaFO) in the present study was obtained by reacting difluorophosphoric acid and sodium carbonate in 1,2-diemethoxyethane over 3 Å mol. sieves. Tetramethylammonium difluorophosphate was prepared from NaFO via cation-exchange with tetramethylammonium chloride. NaFO is here reported to be a very good electrolyte additive, with similar performance in NMC532/graphite pouch cells as the lithium salt. The benefi cial nature of both additives is attributable to the difluorophosphate anion. In contrast, ammonium and tetramethylammonium difluorophosphates are found to be poor electrolyte additives. For the former, this is suggested to be due to the formation of lithium nitride and hydrogen gas. In the experiment, the researchers used many compounds, for example, 1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3Name: 1,3,2-Dioxathiolane 2,2-dioxide).

1,3,2-Dioxathiolane 2,2-dioxide (cas: 1072-53-3) belongs to benzothiophene derivatives. Benzothiophene is used as starting material for the synthesis of bioactive molecules. The core structure is a part of various pharmaceutical substances and natural products. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, and sertaconazole, and also BTCP.Name: 1,3,2-Dioxathiolane 2,2-dioxide

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem