Month: February 2023

Copper-catalyzed ortho-alkenylation of quinoline N-oxides with alkynes was written by Jiang, Linjuan;Hu, Hui;Liu, Yuanhong. And the article was included in Organic Chemistry Frontiers in 2022.Related Products of 16356-02-8 This article mentions the following:

A copper-catalyzed regioselective C-2 alkenylation of quinoline N-oxides with alkynes and pinacol diborane was developed. This method provided efficient access to a wide variety of deoxygenated 2-alkenyl quinolines with good functional group tolerance. In particular, highly regio- and stereoselective reactions were observed with unsym. alkynes such as aryl(alkyl)acetylenes and enynes. The reaction involved borylcupration of alkynes, captured of the catalytically generated alkenyl copper species by quinoline N-oxides and deborylation. In the experiment, the researchers used many compounds, for example, 1,4-Dimethoxy-2-butyne (cas: 16356-02-8Related Products of 16356-02-8).

1,4-Dimethoxy-2-butyne (cas: 16356-02-8) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil.Related Products of 16356-02-8

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

Organic constituents of mutagenic secondary effluents from wastewater treatment plants was written by Ellis, David D.;Jone, Cyrenius M.;Larson, Richard A.;Schaeffer, David J.. And the article was included in Archives of Environmental Contamination and Toxicology in 1982.Application of 20324-33-8 This article mentions the following:

The organic constituents of mutagenically active secondary effluents from industrial plants and publicly-owned treatment works in Illinois were analyzed by capillary gas chromatog. mass spectroscopy. Tentative identification of 243 compounds, 20 of which are US Environmental Protection Agency priority pollutants, was achieved, including 33 not previously reported as water constituents. Among the compounds detected in ≥1 of the effluents were aromatic hydrocarbons, phenols, plasticizers, chloro and bromo compounds, anilines, indoles, and triazine herbicides. However, only N-nitrosodimethylamine  [62-75-9] and o-toluidine  [95-53-4], among the identified compounds, are known to be carcinogens or mutagens. In the experiment, the researchers used many compounds, for example, 1-((1-((1-Methoxypropan-2-yl)oxy)propan-2-yl)oxy)propan-2-ol (cas: 20324-33-8Application of 20324-33-8).

1-((1-((1-Methoxypropan-2-yl)oxy)propan-2-yl)oxy)propan-2-ol (cas: 20324-33-8) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom. Complexation of the magnesium atom stabilizes the Grignard reagent and helps to keep it in solution.Application of 20324-33-8

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

Improved synthesis of natural ester sintenin and its analogues via Wittig reaction was written by Sharma, Mukul;Rajesh, U. Chinna;Rawat, Diwan S.. And the article was included in Journal of the Indian Chemical Society in 2013.Formula: C11H16O3 This article mentions the following:

The synthesis of a cytotoxic natural ester sintenin and twenty eight analogs including nitrogen-containing heterocyclic indole groups, saturated amides and unsaturated amides was carried out by a convenient one-pot Wittig reaction in aqueous medium with improved yield. A systematic structure activity relationship of sintenin ester was designed by chem. modified derivatives in order to get better cytotoxicity. The title compounds thus formed included 3,4-Dimethoxybenzenepropanoic acid 3-(3,4-dimethoxyphenyl)propyl ester (sintenin carboxylic acid ester) (I) and related substances. The synthesis of the target compounds was achieved by a reaction of benzenepropanoic acid derivatives with benzenepropanol derivatives Wittig reaction products included (2E)-3-(phenyl)-2-propenoic acid derivatives and (2E)-3-(phenyl)-2-propen-1-ol derivatives Amide analogs were prepared from (2E)-3-phenyl-2-propen-1-amine. Amide analogs thus formed included (2E)-3-(4-methylphenyl)-N-(3-phenylpropyl)-2-propenamide, 4-methyl-N-(3-phenylpropyl)benzenepropanamide. In the experiment, the researchers used many compounds, for example, 3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3Formula: C11H16O3).

3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Ethyl ether is an excellent solvent for extractions and for a wide variety of chemical reactions. It is also used as a volatile starting fluid for diesel engines and gasoline engines in cold weather. Dimethyl ether is used as a spray propellant and refrigerant. Methyl t-butyl ether (MTBE) is a gasoline additive that boosts the octane number and reduces the amount of nitrogen-oxide pollutants in the exhaust. The ethers of ethylene glycol are used as solvents and plasticizers.Formula: C11H16O3

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

Palladium-catalyzed triple coupling of 2-iodoanisoles with aryl iodides to access 6H-dibenzopyrans was written by Chen, Li-Ping;Cheng, Shu-Lin;Fan, Xin-Yue;Zhu, Ji-Fa;Wang, Bi-Qin;Feng, Chun;Xiang, Shi-Kai. And the article was included in Organic Chemistry Frontiers in 2022.HPLC of Formula: 75581-11-2 This article mentions the following:

A palladium-catalyzed triple coupling of 2-iodoanisoles with aryl iodides was developed. 3-Methyl-2-pyridone was used as a ligand to accelerate the cross-coupling and suppress the homo-coupling of 2-iodoanisoles. A variety of 6H-dibenzopyran derivatives such as I [R = H, F, Cl, etc., R¹ = 4-Me, 4-F, 4-MeO, etc.; R² = 8-Me, 8-Cl, 8-Ph, etc.] was prepared by this method. In the experiment, the researchers used many compounds, for example, 4-Iodo-1-methoxy-2-methylbenzene (cas: 75581-11-2HPLC of Formula: 75581-11-2).

4-Iodo-1-methoxy-2-methylbenzene (cas: 75581-11-2) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.HPLC of Formula: 75581-11-2

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

Synthesis of Ag nanoparticles by Celery leaves extract supported on magnetic biochar substrate, as a catalyst for the reduction reactions was written by Taheri, Sahar;Heravi, Majid M.;Mohammadi, Pourya. And the article was included in Scientific Reports in 2022.Reference of 105-13-5 This article mentions the following:

In this study, a biochar/Fe₃O₄-Ag magnetic nanocatalyst was produced via a green path by using Celery stalk as a carbon-based substrate and Celery leaf extract as reducing and stabilizing agents to construct Ag nanoparticles. The synthesized nanocatalyst was determined using various techniques, such as UV-Vis spectroscopy, FT-IR spectroscopy, XRD (X-ray diffraction), SEM/EDX spectroscopy (SEM/energy-dispersive X-ray), TEM (transmission electron microscopy) and VSM (vibrating sample magnetometer). To survey the catalytic action of the biochar/Fe₃O₄-Ag nanocatalyst, it was used in the reduction reaction of disparate nitroaroms., aldehydes, and ketones. This catalyst demonstrated good characteristics in terms of the amount, reusability, recoverability, activity, and structural integrity of the catalyst during the reaction. In addition, biochar/Fe₃O₄-Ag could be detached magnetically and recycled multiple times without significantly reducing its catalytic performance. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Reference of 105-13-5).

(4-Methoxyphenyl)methanol (cas: 105-13-5) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.Reference of 105-13-5

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

Accelerated Decomposition of Potassium Permanganate in Ferrocenium Ion as Ferrocenium-Doped Manganese(IV) Oxide for Selective Oxidation of Alcohols was written by Chumkaeo, Peerapong;Poonsawat, Thinnaphat;Yunita, Isti;Temnuch, Natcha;Meechai, Titiya;Kumpan, Nuttapong;Khamthip, Achjana;Chuaitammakit, Laksamee Chaicharoenwimolkul;Chairam, Sanoe;Somsook, Ekasith. And the article was included in Synlett in 2022.Recommanded Product: 105-13-5 This article mentions the following:

Ferrocenium-doped manganese(IV) oxide (Fc⁺/MnO₂) was synthesized through accelerated decomposition of KMnO₄ in the presence of ferrocenium ion (Fc⁺) generated by concentrated sulfuric acid. The corresponding catalysts enabled highly efficient oxidation of alcs. with aldehyde or ketone. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Recommanded Product: 105-13-5).

(4-Methoxyphenyl)methanol (cas: 105-13-5) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.Recommanded Product: 105-13-5

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

Combinatorial approach for the design of new, simplified chiral phase-transfer catalysts with high catalytic performance for practical asymmetric synthesis of α-alkyl-α-amino acids was written by Kitamura, Masanori;Arimura, Yuichiro;Shirakawa, Seiji;Maruoka, Keiji. And the article was included in Tetrahedron Letters in 2008.Application of 66943-05-3 This article mentions the following:

A very efficient, chiral phase-transfer catalyst, quaternary ammonium salt I, was prepared from the easily available (S)-1,1′-binaphthyl-2,2′-dicarboxylic acid. I exhibited the high catalytic activity (0.01-0.1 mol %) in the asym. alkylation of N-(diphenylmethylene)glycine tert-Bu ester compared to other existing chiral phase-transfer catalysts. This catalyst will be useful in the enantioselective synthesis of structurally diverse natural and unnatural α-alkyl-α-amino acids. In the experiment, the researchers used many compounds, for example, 1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3Application of 66943-05-3).

1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. But ether is more polar than alkenes. At room temperature, ethers are pleasant-smelling colourless liquids. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil.Application of 66943-05-3

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

Copper Clusters Encapsulated in Carbonaceous Mesoporous Silica Nanospheres for the Valorization of Biomass-Derived Molecules was written by Lan, Fujun;Zhang, Huiling;Zhao, Chaoyue;Shu, Yu;Guan, Qingxin;Li, Wei. And the article was included in ACS Catalysis in 2022.Electric Literature of C8H10O2 This article mentions the following:

Cu-based catalysts possess prominent properties in the selective hydrogenation of carbon-oxygen bonds but suffer from low stability due to high-temperature sintering. Dandelion-like nanosized mesoporous silica spheres (NMSSs) with short mesochannels can afford a nanoconfined space restraining the metal from aggregating. Herein, we report an air-assisted low-temperature carbonization of the surfactant template strategy for fabricating N-doped carbon-coated NMSSs (NC@NMSSs) encapsulated ultra-dispersed Cu cluster catalysts (Cu/NC@NMSSs). The as-obtained catalysts have demonstrated excellent performances in the hydrogenation of biomass-derived levulinic acid (LA) into γ-valerolactone (GVL), achieving a GVL yield as high as 96% and commendable stability in 100 h. The functional N species and C=O groups on the NC coating layer play a critical role in stabilizing and dispersing Cu clusters. Theor. calculations reveal that the pyrrolic and pyridinic N sites can enrich LA reactants. Accordingly, the apparent activation energy (E_a) is reduced by half and the turnover frequency doubled compared to Cu/NMSS catalysts. Addnl., the catalysts displayed high hydrogenation activities for a variety of aldehydes, ketones, and nitroarenes. This work offers a convenient strategy for constructing promising Cu-based catalysts in upgrading biomass-derived compounds In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Electric Literature of C8H10O2).

(4-Methoxyphenyl)methanol (cas: 105-13-5) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. But on the other hand, ethers undergo cleavage by reaction with acids. Ethyl ether is an excellent solvent for extractions and for a wide variety of chemical reactions. It is also used as a volatile starting fluid for diesel engines and gasoline engines in cold weather. Dimethyl ether is used as a spray propellant and refrigerant. Methyl t-butyl ether (MTBE) is a gasoline additive that boosts the octane number and reduces the amount of nitrogen-oxide pollutants in the exhaust. The ethers of ethylene glycol are used as solvents and plasticizers.Electric Literature of C8H10O2

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

Ultrafast photodynamics and quantitative evaluation of biohybrid photosynthetic antenna and reaction center complexes generating photocurrent was written by Yoneda, Yusuke;Goto, Akari;Takeda, Nobutaka;Harada, Hiromi;Kondo, Masaharu;Miyasaka, Hiroshi;Nagasawa, Yutaka;Dewa, Takehisa. And the article was included in Journal of Physical Chemistry C in 2020.Computed Properties of C9H10O4 This article mentions the following:

A functional linkage between light-harvesting and photocatalytic components is a pivotal issue for using solar energy in chem. conversions; however, this concept is far from being practically realized. Here, we constructed a system that integrates an artificially extended photosynthetic light-harvesting complex 2 (LH2) and a light-harvesting 1-reaction center (RC) core complex (LH1-RC). A biohybrid LH2, whose light-harvesting ability was extended by a covalently attached hydrophobic fluorophore ATTO647N (LH2-ATTO) to cover the absorption gap of LH2, was assembled with LH1-RC in a lipid bilayer. Femtosecond transient absorption spectroscopy revealed that upon an excitation of the ATTO, sequential excitation energy transfer (EET), ATTO → LH2 → LH1 → RC, was followed by a subsequent electron transfer in the RC with rates comparable to those in a native system. As a proof of concept, the functional linkage between light-harvesting and photocatalytic reactions was quant. demonstrated through the enhancement in the charge separation yield and photocurrent generation activity of LH2-ATTO/LH1-RC assembled on an electrode. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7Computed Properties of C9H10O4).

2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7) belongs to ethers. Relative to alcohols, ethers are generally less dense, are less soluble in water, and have lower boiling points. They are relatively unreactive, and as a result they are useful as solvents for fats, oils, waxes, perfumes, resins, dyes, gums, and hydrocarbons. Vapours of certain ethers are used as insecticides, miticides, and fumigants for soil. Ethers can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Computed Properties of C9H10O4

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

Probing the Reactivity of the Active Material of a Li-Ion Silicon Anode with Common Battery Solvents was written by Han, Binghong;Zhang, Yunya;Liao, Chen;Trask, Stephen E.;Li, Xiang;Uppuluri, Ritesh;Vaughey, John T.;Key, Baris;Dogan, Fulya. And the article was included in ACS Applied Materials & Interfaces in 2021.HPLC of Formula: 112-49-2 This article mentions the following:

Calculations and modeling have shown that replacing the traditional graphite anode with silicon can greatly improve the energy d. of lithium-ion batteries. However, the large volume change of silicon particles and high reactivity of lithiated silicon when in contact with the electrolyte lead to rapid capacity fading during charging/discharging processes. In this report, we use specific lithium silicides (LS) as model compounds to systematically study the reaction between lithiated Si and different electrolyte solvents, which provides a powerful platform to deconvolute and evaluate the degradation of various organic solvents in contact with the active lithiated Si-electrode surface after lithiation. NMR (NMR) characterization results show that a cyclic carbonate such as ethylene carbonate is chem. less stable than a linear carbonate such as ethylmethyl carbonate, fluoroethylene carbonate, and triglyme as they are found to be more stable when mixed with LS model compounds Guided by the exptl. results, two ethylene carbonate (EC)-free electrolytes are studied, and the electrochem. results show improvements with graphite-free Si electrodes relative to the traditional ethylene-carbonate-based electrolytes. More importantly, the study contributes to our understanding of the significant fundamental chem. and electrochem. stability differences between silicon and traditional graphite lithium-ion battery (LIB) anodes and suggests a focused development of electrolytes with specific chem. stability vs lithiated silicon which can passivate the surface more effectively. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2HPLC of Formula: 112-49-2).

2,5,8,11-Tetraoxadodecane (cas: 112-49-2) belongs to ethers. The oxygen atom in ethers are more electronegative than carbon, thus the hydrogens which are alpha to the ethers are more acidic than the simple hydrocarbons. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.HPLC of Formula: 112-49-2

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