Month: February 2023

Kinetics of oxidation of phenoxyacetic acids by quinolinium fluorochromate was written by Karunakaran, K.. And the article was included in Polish Journal of Chemistry in 1998.Application of 1877-75-4 This article mentions the following:

The kinetics of oxidn of 21 PhOCH₂CO₂H derivatives by quinolinium fluorochromate were studied in binary solvent mixtures CH₂:CHCN has no effect on the oxidation rates in dipolar protic solvents, but in aprotic solvents it decreases the oxidation rates. In both solvent systems there exists an equilibrium prior to the rate-determining step, followed by irreversible decomposition of the complex. The calculated rate constants correlate well with Hammett σ values, and suitable mechanisms were proposed. In the experiment, the researchers used many compounds, for example, 2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4Application of 1877-75-4).

2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4) belongs to ethers. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides. 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.Application of 1877-75-4

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

Governing Role of Solvent on Discharge Activity in Lithium-CO₂ Batteries was written by Khurram, Aliza;Yin, Yuming;Yan, Lifu;Zhao, Lingling;Gallant, Betar M.. And the article was included in Journal of Physical Chemistry Letters in 2019.Product Details of 112-49-2 This article mentions the following:

Non-aqueous Li-CO₂ batteries reported in literature have almost exclusively relied upon glyme-based electrolytes, leading to a hypothesis that they are uniquely active for CO₂ discharge. Here, we study the effect of electrolyte composition on CO₂ activity to examine whether this is the case. The results indicate that TEGDME-based electrolytes containing moderate concentrations of Li⁺ salts (roughly 0.7-2M examined here) are most conducive to CO₂ activation, especially compared to DMSO and propylene carbonate-based electrolytes. Through electrochem., spectroscopic, and computational methods, we determine that glymes have lower desolvation energies for Li⁺ compared to other solvent candidates, whereas high salt concentrations increase the local d. of Li⁺ surrounding CO₂ and reduction intermediates. These attributes collectively increase the availability of Li⁺, crossing a threshold necessary to support CO₂ activation. Discharge voltage and reaction rates are also sensitive to the alkali cation identity, further invoking its key role in enabling or suppressing reactivity. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Product Details of 112-49-2).

2,5,8,11-Tetraoxadodecane (cas: 112-49-2) 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. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Product Details of 112-49-2

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

Controlling the selectivity to chemicals from lignin via catalytic fast pyrolysis was written by Ma, Zhiqiang;Troussard, Ekaterina;van Bokhoven, Jeroen A.. And the article was included in Applied Catalysis, A: General in 2012.HPLC of Formula: 3929-47-3 This article mentions the following:

The catalytic fast pyrolysis of alk. lignin to useful chems. was investigated using zeolite catalysts with different acidity and pore size. The catalyst played dual roles in this process. In its acid form, it catalytically converted the depolymerized intermediates into desirable and more stable products. This and their surface prevented repolymn. and coke formation. The yield of liquid and the selectivity to desired products can be controlled by tuning of the acidity and pore size of the catalyst. Using no catalyst yielded 40 weight% of liquid, which mainly consisted of 6 weight% (carbon yield) of phenols and 19 weight% (carbon yield) of phenol alkoxy species. The highest yield of phenol alkoxy species was obtained over H-ZSM5 of extremely low number of acid sites; liquid yield of 51 weight% and carbon yield of 24 weight%. The highest yield of liquid (75 weight%) was obtained over H-USY, which had the largest pore size and lowest Si/Al ratio, thus the largest number of acid sites among all the catalyst tested; the carbon yield of aromatic hydrocarbons was around 40 weight% at 650 °C. Depolymerized lignin products undergo consecutive reaction to form phenol alkoxy, phenols, and eventually aromatic hydrocarbons. In the experiment, the researchers used many compounds, for example, 3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3HPLC of Formula: 3929-47-3).

3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3) 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. 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.HPLC of Formula: 3929-47-3

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

Dehydrogenative and Redox-Neutral N-Heterocyclization of Aminoalcohols Catalyzed by Manganese Pincer Complexes was written by Zubar, Viktoriia;Brzozowska, Aleksandra;Sklyaruk, Jan;Rueping, Magnus. And the article was included in Organometallics in 2022.HPLC of Formula: 5367-32-8 This article mentions the following:

A new Mn catalyzed heterocyclization of aminoalcs. was accomplished. A wide range of heterocycles were synthesized including, 1,2,3,4-tetrahydroquinolines, dihydroquinolinones and 2,3,4,5-tetrahydro-1H-benzo[b]azepines. The reaction was performed under mild reaction conditions using air and moisture stable Mn catalysts. The desired heterocycles were obtained in good to excellent yields. In the experiment, the researchers used many compounds, for example, 3-Methyl-4-nitroanisole (cas: 5367-32-8HPLC of Formula: 5367-32-8).

3-Methyl-4-nitroanisole (cas: 5367-32-8) 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. 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.HPLC of Formula: 5367-32-8

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

Efficient iron/copper-cocatalyzed O-arylation of phenols with bromoarenes was written by Liu, Xiaoyan;Zhang, Songlin. And the article was included in Synlett in 2011.Name: 1-(4-(4-Methoxyphenoxy)phenyl)ethanone This article mentions the following:

Low catalytic amount CuI and Fe(acac)₃ were found to effectively promote the C-O cross-coupling reaction in the presence of K₂CO₃ as the base. A series of diaryl ethers with different substituents can be synthesized in good to excellent yields. This efficient and economic method is attractive for applications on an industrial scale. In the experiment, the researchers used many compounds, for example, 1-(4-(4-Methoxyphenoxy)phenyl)ethanone (cas: 54916-28-8Name: 1-(4-(4-Methoxyphenoxy)phenyl)ethanone).

1-(4-(4-Methoxyphenoxy)phenyl)ethanone (cas: 54916-28-8) 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. 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.Name: 1-(4-(4-Methoxyphenoxy)phenyl)ethanone

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

Reinforced catalytic oxidation of polyoxometalate@charge transfer complex by on-site heating from photothermal conversion was written by Chen, Xiaofei;Yang, Aibing;Wang, Gengxin;Wei, Mingfeng;Liu, Ning;Li, Bao;Wu, Lixin. And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2022.Related Products of 105-13-5 This article mentions the following:

Near IR (NIR) absorption at low energy region has been demonstrated to devoted to photothermal conversion efficiently. This process provides a possibility for valuable extension in emerging photothermal catalysis following a specific approach of mol. composition To exploit novel photothermal materials in increasing the catalytic activity of comment catalysts, a typical yet unnoticed charge transfer (CT) complex of 3,3�5,5�tetramethylbenzidine (TMB_CT) is used here as an on-site heater. Through the electrostatic complexation of cationic CT complex bearing strong NIR absorption with series polyanionic clusters, composite catalysts are prepared These nano-assembled catalysts in size of 5-10 nm display integrated NIR photothermal effect and highly enhanced catalysis for the mild oxidation of toluene and its derivatives into corresponding alcs. with high conversion and selection. While NIR photothermal stability of TMB_CT is maintained, the catalytic activity of inorganic clusters is largely improved. The increments in conversion unattainable under external heating condition are realized and the extension to the mild oxidation of thioethers and olefins into sulfoxides and epoxides with acceptable catalytic recyclability and structural stability are demonstrated. All results from the detailed characterizations figure out the applicability of the NIR photothermal conversion to the catalytic reactions with similar catalytic centers. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Related Products of 105-13-5).

(4-Methoxyphenyl)methanol (cas: 105-13-5) 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 105-13-5

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

Intramolecular Anion Effect in Polyoxometalate-Based Organocatalysts: Reactivity Enhancement and Chirality Transfer by a Metal Oxide-Organic Cation Interaction was written by Brazel, Christian;Dupre, Nathalie;Malacria, Max;Hasenknopf, Bernold;Lacote, Emmanuel;Thorimbert, Serge. And the article was included in Chemistry – A European Journal in 2014.Recommanded Product: 3-(2,4-Dimethoxyphenyl)acrylic acid This article mentions the following:

An α₁-Dawson polyanion bearing a lateral side chain with a 4-aminopyridine end group was synthesized. This organopolyoxometalate catalyzes the addition of indenyl allyl silanes to cinnamoyl fluorides. The polyanionic framework influences the organocatalyst activity and selectivity. A moderate but nonzero chirality transfer from the chiral inorganic framework to the organic substrate was observed In the experiment, the researchers used many compounds, for example, 3-(2,4-Dimethoxyphenyl)acrylic acid (cas: 6972-61-8Recommanded Product: 3-(2,4-Dimethoxyphenyl)acrylic acid).

3-(2,4-Dimethoxyphenyl)acrylic acid (cas: 6972-61-8) 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. 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: 3-(2,4-Dimethoxyphenyl)acrylic acid

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

Estimation of log P_ow values for neutral and basic compounds by microchip microemulsion electrokinetic chromatography with indirect fluorimetric detection (μMEEKC-IFD) was written by Tu, Jian;Halsall, H. Brian;Seliskar, Carl J.;Limbach, Patrick A.;Arias, Francisco;Wehmeyer, Kenneth R.;Heineman, William R.. And the article was included in Journal of Pharmaceutical and Biomedical Analysis in 2005.Synthetic Route of C8H9NO3 This article mentions the following:

Microchip microemulsion electrokinetic chromatog. with indirect fluorimetric detection (μMEEKC-IFD) was used to obtain log P octanol/water (log P_ow) values for neutral and basic compounds Six compounds, with log P_ow values between 0.38 and 5.03, were used to create a calibration curve relating the log of retention factors (log k) obtained from μMEEKC-IFD with the known log P_ow values. The log P_ow values for six addnl. compounds were determined using the log k values obtained by μMEEKC-IFD and the linear relationship between log P_ow and log k established for the standard compounds The μMEEKC-IFD buffer was composed of 50 mM 3-[cyclohexylamino]-1-propane-sulfonic acid (CAPS) buffer (pH 10.4) containing 1.2% n-heptane (volume/volume), 2% sodium dodecylsulfate (w/v), 8% 1-butanol (volume/volume) and 4 μM 5-carboxytetramethyl-rhodamine (TAMRA) as the fluorophore probe for indirect detection. The μMEEKC-IFD provided an accurate method for estimating log P_ow values and also a means for analyzing compounds that are non-fluorescent. In the experiment, the researchers used many compounds, for example, 3-Methyl-4-nitroanisole (cas: 5367-32-8Synthetic Route of C8H9NO3).

3-Methyl-4-nitroanisole (cas: 5367-32-8) belongs to ethers. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides. Ethers are good solvents partly because they are not very reactive. Most ethers can be cleaved, however, by hydrobromic acid (HBr) to give alkyl bromides or by hydroiodic acid (HI) to give alkyl iodides.Synthetic Route of C8H9NO3

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

Synthesis and antioxidant activities of Coenzyme Q analogues was written by Wang, Jin;Li, Shuo;Yang, Tao;Yang, Jian. And the article was included in European Journal of Medicinal Chemistry in 2014.Category: ethers-buliding-blocks This article mentions the following:

A series of 2,3-dimethoxy-5-methyl-1,4-benzoquinones (Coenzyme Q) substituted at the C-6 position with various groups were designed and synthesized based on the Coenzyme Q₁₀ as potent antioxidant. In vitro antioxidant activities of these compounds were evaluated and compared with com. antioxidant Coenzyme Q₁₀ employing DPPH assay. All these synthesized Coenzyme Q analogs exhibit good antioxidant activities. Of which Compound I bearing a N-benzoylpiperazine group at the C-6 position showed more potent inhibition of DPPH radical than Coenzyme Q₁₀. All these results suggested the applicability of the Coenzyme Q analogs as potent antioxidants for combating oxidative stress. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7Category: ethers-buliding-blocks).

2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7) 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. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Category: ethers-buliding-blocks

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

The effect of co-initiator structure on photoinitiating efficiency of photoredox couples composed of quinoline[2,3-b]-1H-imidazo[1,2-a]pyridinium bromide and phenoxyacetic acid or N,N-dimethylaniline derivatives was written by Pyszka, Ilona;Kucybala, Zdzislaw. And the article was included in Polymer Bulletin (Heidelberg, Germany) in 2008.Electric Literature of C9H10O4 This article mentions the following:

Two groups of electron donors (phenoxyacetic acid derivatives, PAADs, and the family of N,N-dimethylaniline derivatives DMADs) in combination with quinoline[2,3-b]-1H-imidazo[1,2-a]pyridinium bromide (QIPB) were applied as photoinitiator for free radical polymerization induced with UV emission of an argon-ion laser (351 and 361 nm). Anal. of the data obtained for the initial time of photoinitiated polymerization indicates that both, the rate of electron transfer process between QIPB and tested co-initiators and the structure of obtained free radical can affect the overall photoinitiation ability of tested photoredox pairs. In the experiment, the researchers used many compounds, for example, 2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4Electric Literature of C9H10O4).

2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4) 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. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly autoxidize to form hydroperoxides and dialkyl peroxides. If concentrated or heated, these peroxides may explode. To prevent such explosions, ethers should be obtained in small quantities, kept in tightly sealed containers, and used promptly.Electric Literature of C9H10O4

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