Tag: 0-100

In 2019,Journal of Molecular Structure included an article by Tan, Hong-bo; Li, Hao; Xu, Jia; Song, Gui-ting; Meng, Jiang-ping. HPLC of Formula: 623-47-2. The article was titled 《Synthesis, NMR analysis and X-ray crystal structure of novel 1,5-dibenzyl-1,2,5,6-tetrahydro-1,5-diazocines》. The information in the text is summarized as follows:

Novel eight-membered 1,5-dibenzyl-1,2,5,6-tetrahydro-1,5-diazocines I [R = H, 4-Me, 4-F, 4-MeO, 2,4-di-F, 2,4-di-MeO] were prepared by a new three-component aza-annulation as one-pot method from paraformaldehyde, Et propiolate and benzylamine. Unique structure of products, an easy exptl. workup, the use of simple and available starting materials, and the high atom economy were the main advantages of this method. The target compound was isolated and unambiguously confirmed by NMR spectra (1D-NMR and 2D-NMR), high-resolution mass spectrometry and single-crystal X-ray diffraction anal. Furthermore, the products possessed N-benzyl-protected secondary amines and β-enamine esters, which could serve in further functionalizations to produce mol. diversity for use in medicinal and synthetic chem. In the experiment, the researchers used many compounds, for example, Ethyl propiolate(cas: 623-47-2HPLC of Formula: 623-47-2)

Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.HPLC of Formula: 623-47-2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Puget, Marin; Shcherbakov, Viacheslav; Denisov, Sergey; Moreau, Philippe; Dognon, Jean-Pierre; Mostafavi, Mehran; Le Caer, Sophie published an article in 2021. The article was titled 《Reaction Mechanisms of the Degradation of Fluoroethylene Carbonate, an Additive of Lithium-Ion Batteries, Unraveled by Radiation Chemistry》, and you may find the article in Chemistry – A European Journal.Name: Vinylene carbonate The information in the text is summarized as follows:

Numerous additives are used in the electrolytes of lithium-ion batteries, especially for the formation of an efficient solid electrolyte interphase at the surface of the electrodes. Understanding the degradation processes of these compounds is thus important; they can be seen through radiolysis. In the case of fluoroethylene carbonate (FEC), picosecond pulse radiolysis experiments evidenced the formation of FEC.-. This radical is stabilized in neat FEC, whereas the ring opens to form more stable radical anions when FEC is a solute in other solvents, as confirmed by quantum chem. calculations In neat FEC, pre-solvated electrons primarily undergo attachment rather than solvation. On long timescales, the gases produced (H2, CO, and CO2) were quantified. A reaction scheme for both the oxidizing and reducing pathways at stake in irradiated FEC is proposed. This work shows that the nature of the primary species formed in FEC depends on the amount of FEC in the solutionVinylene carbonate(cas: 872-36-6Name: Vinylene carbonate) was used in this study.

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Name: Vinylene carbonate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Microwave induced synthesis, and pharmacological properties of novel 1-benzoyl-4-bromopyrrolo[1,2-a]quinoline-3-carboxylate analogues》 was published in Chemical Data Collections in 2020. These research results belong to Uppar, Vijayakumar; Mudnakudu-Nagaraju, Kiran K.; Basarikatti, Atiyaparveen I.; Chougala, Mallikarjun; Chandrashekharappa, Sandeep; Mohan, Mahendra K.; Banuprakash, Govindappa; Venugopala, Katharigatta N.; Ningegowda, Raghu; Padmashali, Basavaraj. Recommanded Product: Ethyl propiolate The article mentions the following:

Greener method of synthesis of benzo-fused indolizines like Et 4-Bromo-1-(substituted-benzoyl)pyrrolo[1,2-a]quinoline-3-carboxylate analoguos (I) [R1= H, 4-F, 4-CN; R2= Me, Et; R3= H, acetoxy] using the one-pot method with 3-bromo quinolone, phenacyl bromide and electron-deficient alkynes in the presence of triethylamine base with acetonitrile as a solvent. The structures of all the newly synthesized pyrrolo[1,2-a]quinoline I was confirmed by spectroscopic techniques. All the synthesized test compounds I were screened for their antibacterial activity using six different types of Gram-pos. and Gram-neg. bacterial strains. The compounds I [R1= 4-OMe; R2=R3= acetoxy], [R1= H; R2=R3= acetoxy] and [R1= H; R2= propanoyloxy; R3= H] exhibited a significant zone of inhibition against all six bacterial strains, and the test compound I [R1= 4-CN; R2=R3= acetoxy] showed potent free radical scavenging activity with the highest percentage inhibition of 49.27 at 100μg/mL. In the experimental materials used by the author, we found Ethyl propiolate(cas: 623-47-2Recommanded Product: Ethyl propiolate)

Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Recommanded Product: Ethyl propiolate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

The author of 《A three-component approach to isoxazolines and isoxazoles under metal-free conditions》 were Wang, Dahan; Zhang, Feng; Xiao, Fuhong; Deng, Guo-Jun. And the article was published in Organic & Biomolecular Chemistry in 2019. Application In Synthesis of Ethyl propiolate The author mentioned the following in the article:

A 1,3-dipolar cycloaddition of 2-methylquinolines I (R = H, 6-F, 8-OMe, 7-Cl, etc.), tert-Bu nitrite (TBN) and alkynes R1CCR2 (R1 = H, C(O)2Me, C(O)2Et; R2 = 4-methylphenyl, C(O)2Me, 2-hydroxyethyl, pyridin-2-yl, etc.) or alkenes R3CH=CH2 (R3 = Ph, benzyl, chloromethyl, etc.) for the synthesis of biheteroaryls containing both isoxazoline/isoxazole and quinoline motifs II (R4 = quinolin-2-yl) and IIIhas been developed. In this protocol, TBN serves as a convenient N-O source to convert 2-methylquinoline into intermediate nitrile oxides in situ. In the experimental materials used by the author, we found Ethyl propiolate(cas: 623-47-2Application In Synthesis of Ethyl propiolate)

Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Application In Synthesis of Ethyl propiolate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

The author of 《The Role of Electrolyte Additives on the Interfacial Chemistry and Thermal Reactivity of Si-Anode-Based Li-Ion Battery》 were Aupperle, Felix; von Aspern, Natascha; Berghus, Debbie; Weber, Felix; Eshetu, Gebrekidan Gebresilassie; Winter, Martin; Figgemeier, Egbert. And the article was published in ACS Applied Energy Materials in 2019. Product Details of 872-36-6 The author mentioned the following in the article:

Si has gained huge attention as an anode material for next-generation high-capacity Li-ion batteries (LIBs). However, despite its overwhelming beneficial features, its large-scale commercialization is hampered due to unavoidable challenges such as colossal volume change during (de)alloying, inherent low electronic and ionic conductivities, low Coulombic efficiency, unstable/dynamic solid electrolyte interphase (SEI), electrolyte drying and so forth. Among other strategies, the use of a fraction dose of chem. additives is hailed as the most effective, economic and scalable approach to realize Si-anode-based LIBs. Functional additives can modify the nature and chem. composition of the SEI, which in turn dictates the obtainable capacity, rate capability, Coulombic/energy efficiency, safety, and so forth of the battery system. Thus, we report a systematic and comparative study of various electrolyte additives, namely, tetraethoxysilane (TEOS), (2-cyanoethyl)triethoxysilane (TEOSCN), vinylene carbonate (VC), fluoroethylene carbonate (FEC), and a blend of TEOSCN, VC, and FEC (i.e., VC/FEC/TEOSCN) using electrochem. anal., XPS, d. functional theory calculation, and differential scanning calorimetry. The ternary mixture (FEC/VC/TEOSCN) results in a thinner SEI layer consisting of high shear modulus SEI-building species (mainly LiF). It also provides much improved thermal stability amid all tested additives, showing its potentiality to enable high capacity and safer Si-based anode LIBs. Thus, nitrile-functionalized silanes are highly promising electrolyte additives to boost the electrochem. performance and safety-induced risks of Si-based anode LIBs, emanating from the formation of a robust SEI layer. After reading the article, we found that the author used Vinylene carbonate(cas: 872-36-6Product Details of 872-36-6)

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Product Details of 872-36-6

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Arai, Hajime; Yaguchi, Atsuko; Nishimura, Yoshihiro; Akimoto, Yuya; Ikezawa, Atsunori published an article in 2021. The article was titled 《Operando Optical Analysis of LiFePO4 Composite Electrodes》, and you may find the article in Journal of Physical Chemistry C.Quality Control of Vinylene carbonate The information in the text is summarized as follows:

Elucidating reaction inhomogeneity of composite electrodes is key to improve the performances of batteries such as rate capability and durability. Because the reaction inhomogeneity often disappears after a certain relaxation period, operando anal. techniques are indispensable. We hereby propose that operando optical anal. as a common lab method can be applied to visualize the reaction inhomogeneity of LiFePO4 composite electrodes for lithium-ion batteries with sufficient space and time resolutions The results indicate that the brightness of the charged phase was higher than that of the discharged phases, which can be used to sep. the phases and thus to elucidate the reaction inhomogeneity in the cross section of the composite electrode. A metastable phase Li3/4FePO4 was also captured at a low temperature with the optical anal. In the experiment, the researchers used Vinylene carbonate(cas: 872-36-6Quality Control of Vinylene carbonate)

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Quality Control of Vinylene carbonate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Fan, Qiangwen; Wu, Guorong; Chen, Yong; He, Yanling; Zhu, Longwei; Ren, Huijun; Lin, Hailu published their research in Journal of Molecular Structure in 2021. The article was titled 《An unexpected Cu(II) complex of oxidized 1,4-dydropyridine derivative: Synthesis, characterization and DFT calculations》.Quality Control of Ethyl propiolate The article contains the following contents:

A Cu(II) complex of 4-phenyl-3,5-dicarboxylic-pyridine (HL2), [Cu(HL2)Py], was isolated unexpectedly during studying coordination reaction of 3,5-dicarboxylic-1,4-dihydropyridine-4-Ph ligand (HL1) with copper(II) nitrate by solvothermal method. Crystal structure of the [Cu(HL2)Py] was determined by single-crystal X-Ray diffraction and its phase purity and thermal stability was evaluated by PXRD and TGA, resp. Furthermore, to shed more light on structural properties of the [Cu(HL2)Py], its geometrical and electronic structure was investigated exptl. and theor. Finally, the oxidative mechanism of HL1 was investigated by DFT calculations In the part of experimental materials, we found many familiar compounds, such as Ethyl propiolate(cas: 623-47-2Quality Control of Ethyl propiolate)

Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Quality Control of Ethyl propiolate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

《Synthesis, characterization, optical properties, computational characterizations, QTAIM analysis and cyclic voltammetry of new organic dyes for dye-sensitized solar cells》 was written by Agheli, Zahra; Pordel, Mehdi; Beyramabadi, Safar Ali. Synthetic Route of C5H6O2 And the article was included in Journal of Molecular Structure in 2020. The article conveys some information:

In recent years, dye-sensitized solar cells (DSSCs) are regarded as potential solar cells for the next generation of photovoltaic technologies. Many organic compounds are explored and used in DSSCs to produce low-cost devices and improve the cell efficiency. In this work, three new heterocyclic purple dyes are synthesized from the reaction of 3-nitropyrazolo[1,5-a]pyridine with various arylacetonitriles for dye-sensitized solar cells (DSSCs), exhibiting high molar extinction coefficients and a broad absorption range led to the good photovoltaic performance of 6.95-7.18%. Phys. spectral, anal. data and optical properties are established the structures of the new dyes. The optimized geometries and relevant frontier orbitals of the dyes are obtained by d. functional theory (DFT) at the level of B3LYP/6-311 + G(d,p). Electrostatic potential maps and electron d. maps of the dyes were also obtained by atoms in mols. (AIM) anal. Cyclic voltammetry measurement was performed to evaluate the electrochem. properties of the dyes and reversible oxidation waves were observed for them. In the experiment, the researchers used Ethyl propiolate(cas: 623-47-2Synthetic Route of C5H6O2)

Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Synthetic Route of C5H6O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Formula: C3H2O3In 2021 ,《InSitu-Formed Artificial Solid Electrolyte Interphase for Boosting the Cycle Stability of Si-Based Anodes for Li-Ion Batteries》 was published in ACS Applied Materials & Interfaces. The article was written by Wang, Hui; Miao, Mouren; Li, Hui; Cao, Yuliang; Yang, Hanxi; Ai, Xinping. The article contains the following contents:

Si is being actively developed as one of the most promising high-capacity anodes for next-generation lithium-ion batteries (LIBs). However, low cycling coulombic efficiency (CE) due to the repetitive growth of the solid electrolyte interphase (SEI) film is still an issue for its application in full batteries. Here, we propose a strategy to in situ form an artificial solid electrolyte interphase (ASEI) on the ferrosilicon/carbon (FeSi/C) anode surface by a purposely designed nucleophilic reaction of polysulfides with vinylene carbonate (VC) and fluoroethylene carbonate (FEC) mols. The as-formed ASEI layer is mech. dense and ionically conducting and therefore can effectively prevent the electrolyte infiltration and decomposition while allowing Li+ transport across, thus stabilizing the interface of the FeSi/C anode. As a result, the ASEI-modified FeSi/C anode exhibits a large reversible capacity of 1409.4 mA h g-1, an excellent cycling stability over 650 cycles, and a greatly elevated cycling CE of 99.8%, possibly serving as a high-capacity anode of LIBs. The results came from multiple reactions, including the reaction of Vinylene carbonate(cas: 872-36-6Formula: C3H2O3)

Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Formula: C3H2O3

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

In 2019,Organic Chemistry Frontiers included an article by Beltran, Frederic; Andna, Lucile; Miesch, Laurence. Synthetic Route of C5H6O2. The article was titled 《Spirocyclization of keto-ynesulfonamides promoted by quaternary ammonium salts》. The information in the text is summarized as follows:

Spirocyclization of keto-ynesulfonamides R(CH2)2N(CCR1)Ts (R = 2-oxocyclopentyl, 5,5-dimethyl-2-oxocyclohexyl, 8-oxo-1,4-dioxaspiro[4.5]decan-7-yl, etc.; R1 = H, Ph, 2H-1,3-benzodioxol-5-yl, etc.) with quaternary ammonium salts was performed to access aza-spiro compounds, e.g., I. Exclusive E-configured 5-exo-dig compounds e.g., I were isolated from keto-ynesulfonamides substituted by an aryl- or a vinyl group, whereas 6-endo-dig compounds e.g., II were favored from terminal ynesulfonamides.Ethyl propiolate(cas: 623-47-2Synthetic Route of C5H6O2) was used in this study.

Ethyl propiolate(cas: 623-47-2) is a clear colorless to pale yellow liquid that is soluble in ethanol, ether and chloroform. It an important organic chemical raw material and pharmaceutical intermediate. Ethyl propargylate is obtained by oxidation of propargyl alcohol to propargylic acid followed by esterification.Synthetic Route of C5H6O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics