Tag: 100-200

A switchable-oxidative cellulose filter paper bearing immobilized Mn^(III)-salen complex for alcohol oxidation was written by Long, Wei;Sevbitov, Andrei;Abdalkareem Jasim, Saade;Kravchenko, Olga;Al-Gazally, Moaed E.;Chupradit, Supat;Kzar, Hamzah H.;Kazemnejadi, Milad. And the article was included in Arabian Journal of Chemistry in 2022.Computed Properties of C8H10O2 This article mentions the following:

Surface modifications of polysaccharide filter papers can alter their catalytic properties significantly. In particular, polysaccharides have gained increasing interest in the development of heterogeneous catalysts. This wok introduces a new approach to the heterogeneous/ sustainable catalytic system preparation based on a catalytic filter paper modified by silylation followed by immobilization of a Mn(III)-salen complex as a novel “catalytic filtration” or “portable catalysis”. Oxidation of alcs. as well as direct conversion of alcs. to Schiff bases and oximes were performed by filtration and passing the reactants through the modified filter paper. Oxidation of benzyl alc. in the presence of mol. oxygen and NaOCl, selectively leads to aldehydes and carboxylic acids, resp. The direct conversion of alcs. to Schiff bases and oximes resulted in the formation of insoluble products on the filter paper. Another advantage of the modified filter paper was its stability and reusability for several times with preservation of the catalytic activity and swellability, which no shrinkage during consecutive wetting-drying cycles was observed Also, a deep study was conducted over mechanism, reusability/stability, and control experiments of the alc. oxidation This study gave new insights into the catalytic propensities of a cellulose filter paper via filtration of reactants. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Computed Properties of C8H10O2).

(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. 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.Computed Properties of C8H10O2

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

AgNO₃-catalyzed decarboxylative cross-coupling reaction: an approach to coenzyme Q was written by Luo, Wan-Yue;Lu, Bin;Qiu, Yong-Fu;Zhou, Rong-Ye;He, Yong-Jing;Wang, Jin. And the article was included in New Journal of Chemistry in 2020.Quality Control of 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione This article mentions the following:

An efficient and general method for the synthesis of coenzyme Q compounds through the activation of the 1,4-benzoquinone Csp²-H bond was developed. This C-C bond formation reaction proceeds readily in an open flask by the direct cross-coupling reaction of coenzyme Q₀ with com. available aliphatic carboxylic acids utilizing AgNO₃ as a catalyst and K₂S₂O₈ as an oxidant in aqueous solution This radical reaction is operationally simple and amenable to gram-scale synthesis. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7Quality Control of 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione).

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. 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.Quality Control of 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione

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

Tracing the tail of ubiquinone in mitochondrial complex I was written by Angerer, Heike;Nasiri, Hamid R.;Niedergesaess, Vanessa;Kerscher, Stefan;Schwalbe, Harald;Brandt, Ulrich. And the article was included in Biochimica et Biophysica Acta, Bioenergetics in 2012.Application of 605-94-7 This article mentions the following:

Mitochondrial complex I (proton pumping NADH:ubiquinone oxidoreductase) is the largest and most complicated component of the respiratory electron transfer chain. Despite its central role in biol. energy conversion the structure and function of this membrane integral multi-protein complex is still poorly understood. Recent insights into the structure of complex I by X-ray crystallog. have shown that iron-sulfur cluster N2, the immediate electron donor for ubiquinone, resides about 30 Å above the membrane domain and mutagenesis studies suggested that the active site for the hydrophobic substrate is located next to this redox-center. To trace the path for the hydrophobic tail of ubiquinone when it enters the peripheral arm of complex I, an extensive structure/function anal. of complex I from Yarrowia lipolytica was performed monitoring the interaction of site-directed mutants with five ubiquinone derivatives carrying different tails. The catalytic activity of a subset of mutants was strictly dependent on the presence of intact isoprenoid moieties in the tail. Overall a consistent picture emerged suggesting that the tail of ubiquinone enters through a narrow path at the interface between the 49-kDa and PSST subunits. Most notably a set of methionines was identified that seems to form a hydrophobic gate to the active site reminiscent to the M-domains involved in the interaction with hydrophobic targeting sequences with the signal recognition particle of the endoplasmic reticulum. Interestingly, two of the amino acids critical for the interaction with the ubiquinone tail are different in bovine complex I and it could be shown that one of these exchanges is responsible for the lower sensitivity of Y. lipolytica complex I toward the inhibitor rotenone. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7Application of 605-94-7).

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. 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.Application of 605-94-7

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

A Convenient Esterification of N-Heteroarene Methanols via C-CN Bond Cleavage of Benzoyl Cyanides as Acylating Sources was written by Su, Fangyao;Zhao, Qianrui;Wang, Mengzhuo;Zhao, Mingzhang;Ren, Yihe;Zhu, Binghan;Chen, Haoran;Lai, Miao;Zhao, Mingqin. And the article was included in ChemistrySelect in 2022.HPLC of Formula: 63071-12-5 This article mentions the following:

An efficient and straightforward methodol. for the esterification of various N-heteroarene methanols using benzoyl cyanides as acylating sources through a simply mixing conditions has been reported. The acyl groups were in-situ generated via chemoselective C-CN bond cleavage to give the N-heteroarenemethyl esters. This process features in readily accessible starting materials and offers an easy operational procedure, and broad substrate scope with excellent selectivity. In the experiment, the researchers used many compounds, for example, (6-Methoxypyridin-2-yl)methanol (cas: 63071-12-5HPLC of Formula: 63071-12-5).

(6-Methoxypyridin-2-yl)methanol (cas: 63071-12-5) 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. 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.HPLC of Formula: 63071-12-5

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

Ruthenium-catalyzed dehydrogenative N-heterocyclization. Indoles from 2-aminophenethyl alcohols and 2-nitrophenethyl alcohols was written by Tsuji, Yasushi;Kotachi, Shinji;Huh, Keun Tae;Watanabe, Yoshihisa. And the article was included in Journal of Organic Chemistry in 1990.Computed Properties of C8H9NO3 This article mentions the following:

Indole derivatives I (R = H, 6-Me, 5-MeO, 4-Cl, 6-Cl, 4-Br) were readily obtained from 2-aminophenethyl alcs. in the presence of 2 mol % of RuCl₂(PPh₃)₃ under reflux in toluene. I(R = H) obtained from 2-aminophenethyl alc. quant. Other I were also obtained in 73-99% isolated yields. The 2-aminophenethyl alcs. were easily prepared by condensation between the corresponding 2-nitrotoluenes and aldehydes followed by reduction During the reaction, a stoichiometric amount of hydrogen was spontaneously evolved into the gas phase. With a heterogeneous and homogeneous binary catalyst system, indoles were afforded in one pot from 2-nitrophenethyl alcs. under a hydrogen atm. In the experiment, the researchers used many compounds, for example, 3-Methyl-4-nitroanisole (cas: 5367-32-8Computed Properties 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. 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.Computed Properties of C8H9NO3

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

A minimal hybridization chain reaction (HCR) system using peptide nucleic acids was written by Kim, Ki Tae;Angerani, Simona;Winssinger, Nicolas. And the article was included in Chemical Science in 2021.Reference of 111-77-3 This article mentions the following:

The HCR represents a powerful tool for amplification in DNA-based circuitry and sensing applications, yet requires the use of long DNA sequences to grant hairpin metastability. Here we describe a minimal HCR system based on peptide nucleic acids (PNAs). A system comprising a 5-mer stem and 5-mer loop/toehold hairpins was found to be suitable to achieve rapid amplification. These hairpins were shown to yield > 10-fold amplification in 2 h and be suitable for the detection of a cancer biomarker on live cells. The use of γgamma-peg-modified PNA was found to be beneficial. In the experiment, the researchers used many compounds, for example, 2-(2-Methoxyethoxy)ethanol (cas: 111-77-3Reference of 111-77-3).

2-(2-Methoxyethoxy)ethanol (cas: 111-77-3) 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.Reference of 111-77-3

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

Alkyldisulfanium Salts: Isolable, Electrophilic Sulfur Reagents Competent for Polyene Cyclizations was written by Schevenels, Florian T.;Shen, Minxing;Snyder, Scott A.. And the article was included in Organic Letters in 2017.Product Details of 3929-47-3 This article mentions the following:

Tools that can effect electrophilic sulfur-promoted cation-π cyclizations are generally lacking, especially using alkylsulfide-based reagents. Herein we report that combining three different 1,2-dithioethers with Cl₂ and SbCl₅ generates isolable alkyldisulfanium salts that can effect such reactions. These new reagents can install -SMe, -SEt, and -SCH₂CH₂CF₃ in modest, moderate, or good yield on diverse frameworks, including polyenes that terminate with electron-deficient groups. We also show that reagents such as dimethyl(methylthio)sulfonium tetrafluoroborate (DMTSF) can accomplish similar chem. In the experiment, the researchers used many compounds, for example, 3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3Product Details of 3929-47-3).

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. 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.Product Details of 3929-47-3

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

A convenient approach for antibacterial polypeptoids featuring sulfonium and oligo(ethylene glycol) subunits was written by Zhang, Bo;Li, Min;Lin, Min;Yang, Xuan;Sun, Jing. And the article was included in Biomaterials Science in 2020.Synthetic Route of C5H12O3 This article mentions the following:

Bioinspired polypeptoids show great potential in many applications. Here, we report a convenient approach to synthesize a novel type of polypeptoid containing both sulfonium and oligo(ethylene glycol) (OEG) moieties by ring-opening polymerization (ROP) and a post-modification strategy. Three types of epoxides with (OEG)n (n = 1-3) groups are involved to offer various functionalities. The obtained polypeptoid sulfonium salts show pos. ζ potential, irresp. of the solution pH and the d.p. (DP). We demonstrate that the polypeptoids exhibit excellent antibacterial activity against Staphylococcus aureus (S. aureus) with MIC (minimal inhibitory concentration) in the range of 3.9-7.8μg mL-1. In addition, the polypeptoids have a low hemolysis property and good in vitro biocompatibility. Remarkably, the as-prepared polypeptoids show rapid and potent antibacterial activity within 5 min. These features suggest that the obtained polypeptoids offer great potential for antimicrobial agents. In the experiment, the researchers used many compounds, for example, 2-(2-Methoxyethoxy)ethanol (cas: 111-77-3Synthetic Route of C5H12O3).

2-(2-Methoxyethoxy)ethanol (cas: 111-77-3) 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. 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.Synthetic Route of C5H12O3

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

Oxidation of benzyl alcohol using linear paired electrolysis was written by Horiguchi, Genki;Kamiya, Hidehiro;Chiba, Kazuhiro;Okada, Yohei. And the article was included in Journal of Environmental Chemical Engineering in 2022.Computed Properties of C8H10O2 This article mentions the following:

Electrochem. transformation offers a green and sustainable process in water treatment, energy conversion, and chem. synthesis. In particular, paired electrolysis systems, which produce valuable products by both anodic oxidation and cathodic reduction, can make the most efficient use of energy. Herein, we developed the oxidation of benzyl alcs. by paired electrolysis using O₂ as the terminal oxidant and an aqueous medium as the electrolyte. The key to this system is the cathodic oxidation path, and the highly oxidizing reactive oxygen species (ROS) produced by O₂ reduction at the cathode oxidizes benzyl alc. This path at the cathode is an indirect oxidation path. Thus, by using both direct oxidation at the anode and indirect oxidation at the cathode, the desired benzaldehyde can be produced with high productivity and efficiency. We obtained the corresponding benzaldehyde in yields as high as 94%, and the system achieved a current efficiency as high as 146%. Especially, the ability to exceed 100% current efficiency is one of the advantages of the paired electrolysis route, and the observed results support the proposed mechanism of linear paired electrolysis. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Computed Properties of C8H10O2).

(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. 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).Computed Properties of C8H10O2

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

Pyrene-containing dyes: Reversible click/declick reaction, optical and aggregation behaviors was written by Peng, Mengde;Wang, Ying;Zhang, Xin. And the article was included in Dyes and Pigments in 2020.Formula: C5H12O3 This article mentions the following:

Pyrene-based dyes were synthesized by a clean, efficient Diels-Alder [4 + 2] click reaction where no catalyst adding or side reactions occurring. The optical behaviors, optoelectronic properties and supramol. donor/acceptor dipolar interactions of these new dyes were investigated by UV-vis absorption, fluorescence spectroscopy, electrostatic potential and frontier MO calculations as well as electrochem. cyclic voltammetry measurements. Two pyrene-based dyes can be mutually transformed by reversible formation or cleavage of Diels-Alder covalent bonds through click/declick reaction. During the reversible reaction, switchable fluorescence on/off behaviors were interestingly observed X-ray single crystal diffraction revealed that supramol. donor/acceptor dipolar and π-π stacking interactions work cooperatively to form stronger interaction and the shorter distance (3.38 Å) between donor and acceptor than general π-π stacking distance (3.54 Å). An amphiphilic dye is self-assembled in water into blue fluorescent, hollow vesicular aggregates with the average diameter of 115-120 nm and a narrow size distribution as revealed by dynamic light scattering, SEM and transmission electron microscopy. In the experiment, the researchers used many compounds, for example, 2-(2-Methoxyethoxy)ethanol (cas: 111-77-3Formula: C5H12O3).

2-(2-Methoxyethoxy)ethanol (cas: 111-77-3) 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. 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.Formula: C5H12O3

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