Tag: 100-200

Radical Addition of 4-Hydroxyquinazolines and Alkylation of Quinones by the Electro-Induced Homolysis of 4-Alkyl-1,4-dihydropyridines was written by Luo, Xiaosheng;Feng, Qiping;Wang, Ping. And the article was included in Synthesis in 2022.Electric Literature of C9H10O4 This article mentions the following:

The formation of C(sp³)-centered radicals via the electro-induced homolysis of 4-alkyl-1,4-dihydropyridines (alkyl-DHPs) is reported. The resulting alkyl radicals reacted with 4-hydroxyquinazolines or quinones to afford 2-alkyldihydroquinazolinones or alkylated quinones. A broad range of alkyl DHPs could be used as versatile radical precursors under electrolysis conditions. This alterative strategy provided a simple and effective pathway for the construction of C(sp²)-C(sp³) and C(sp³)-C(sp³) bonds under mild conditions. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7Electric Literature of C9H10O4).

2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7) 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. 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.Electric Literature of C9H10O4

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

Modeling Phase Equilibria of Ethers and Alcohols with GCA-EOS for Assessing the Coblending of Advanced Biofuels was written by Prieto, Mariana Gonzalez;Sanchez, Francisco A.;Pereda, Selva. And the article was included in Journal of Chemical & Engineering Data in 2019.Quality Control of 2,5,8,11-Tetraoxadodecane This article mentions the following:

In this work, we extend the Group Contribution with Association Equation of State (GCA-EOS) to model the phase behavior of mixtures comprising ethers and alcs. The model parametrization was done using few binary vapor-liquid equilibrium data sets of linear monoethers. We also model the behavior of branched ethers, traditionally used as fuel additives, as well as that of polyethers, which are nowadays being proposed as potential biofuels. Therefore, we investigate, not only the phase equilibrium, but also excess enthalpies of these three types of ethers in mixtures with alcs. Finally, we show that the GCA-EOS is able to predict the phase behavior of polyethers, as well as that of branched ethers, using a group contribution approach. This work is part of a broader project for the development of a robust and predictive thermodn. model for process and product design in the context of biomass valorization. In addition, the parametrization reported here aims to provide a reliable framework specific for the description of thermodn. properties of biofuel blends. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Quality Control of 2,5,8,11-Tetraoxadodecane).

2,5,8,11-Tetraoxadodecane (cas: 112-49-2) 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. 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 2,5,8,11-Tetraoxadodecane

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

Glyme-lithium bis(trifluoromethylsulfonyl)amide superconcentrated electrolytes: salt addition to solvate ionic liquids lowers ionicity but liberates lithium ions was written by Kitada, Atsushi;Koujin, Yoshiki;Shimizu, Masahiro;Kawata, Kio;Yoshinaka, Chiaki;Saimura, Masayuki;Nagata, Takashi;Katahira, Masato;Fukami, Kazuhiro;Murase, Kuniaki. And the article was included in Journal of the Electrochemical Society in 2021.Quality Control of 2,5,8,11-Tetraoxadodecane This article mentions the following:

Solvate ionic liquids (ILs) such as binary equimolar mixtures of glymes (ethyleneglycol-dimethylether or CH₃(OCH₂CH₂)_nOCH₃) and lithium bis(trifluoromethylsulfonyl)amide (LiTf₂N; Tf = SO₂CF₃) are known to show identical self-diffusion coefficients for glymes and Li+ ions. Here, we report that the addition of LiTf₂N to the solvate ILs drastically changes their electrolyte properties. When the lithium salts are added to give the super-concentrated electrolytes with [O]/[Li⁺] = 3 (molar ratio of ether oxygen to Li⁺), ligand exchange or hopping conduction of Li⁺ takes place for triglyme (G3; n = 3) and tetraglyme (G4; n = 4). In addition, the Li⁺ transference number t_Li⁺(EC), electrochem. measured under anion blocking conditions, increases about 3-6 times compared with the solvate ILs. Consequently, segmental motion of glymes apparently affects the transport properties even for the shorter G3 in the super-concentrated region. The relationship between the coordination structure and the transport properties are also discussed as a function of ionicity, the extent of the contribution of self-diffusion to the actual ion conduction. Plots vs ionicity demonstrate that a clear line can be drawn between the solvate ILs and the super-concentrated electrolytes. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Quality Control of 2,5,8,11-Tetraoxadodecane).

2,5,8,11-Tetraoxadodecane (cas: 112-49-2) 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. 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.Quality Control of 2,5,8,11-Tetraoxadodecane

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

Synthesis of Novel Heterocyclic Sulfonamides as Protease Inhibitors of HIV-1 was written by Ding, Yili;Smith, Kenneth L.;Vara Prasad, Chamakura V. N. S.;Wang, Bingyun. And the article was included in Letters in Organic Chemistry in 2018.Safety of 2-(4-Methoxyphenoxy)acetic acid This article mentions the following:

Six new protease inhibitors, e.g., I were designed and synthesized based on the key structural fragments in lopinavir and tipranavir. The designed new compounds contain heterocyclic groups such as thiophene, isoxazole, and imidazole groups, and the best compound I exhibited 0.6 nm of the protease inhibitory activity. Some of these newly designed compounds showed good to excellent HIV-1 protease inhibitory activity, which indicated that this method would be useful for the discovery of new drug lead compounds that target HIV. In the experiment, the researchers used many compounds, for example, 2-(4-Methoxyphenoxy)acetic acid (cas: 1877-75-4Safety of 2-(4-Methoxyphenoxy)acetic acid).

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. 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.Safety of 2-(4-Methoxyphenoxy)acetic acid

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

A novel and efficient synthesis of dihydrexidine was written by Cueva, Juan Pablo;Nichols, David E.. And the article was included in Synthesis in 2009.Formula: C11H16O3 This article mentions the following:

An efficient synthesis of the dopamine D₁-selective full agonist dihydrexidine was achieved in high yields and requiring no chromatog. separations via a facilitated intramol. Henry cyclization of a 2-(3-nitropropyl)benzophenone and subsequent diastereoselective reduction of the resulting tricyclic nitro alkene. 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. 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.Formula: C11H16O3

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

Influence of culture conditions on production of flavor compounds by 29 ligninolytic basidiomycetes was written by Gallois, Annie;Gross, Brigitte;Langlois, Dominique;Spinnler, Henry Eric;Brunerie, Pascal. And the article was included in Mycological Research in 1990.COA of Formula: C11H16O3 This article mentions the following:

The odorous volatile metabolites produced by 29 ligninolytic basidiomycete strains (identified by gas chromatog. coupled to mass spectroscopy) and the flavor quality of their cultures were investigated on 6 different liquid media tested with and without agitation. A total of 113 compounds were identified, the most numerous being alcs. (2-methyl-1-propanol, 2-methyl-1-butanol, 3-methyl-1-butanol, 2-phenylethanol, 3,4-dimethoxyphenylmethanol, 4-vinylphenol), aldehydes (1,3-dimethoxybenzaldehyde) and ketones (4-hydroxy-3-methyl-2-phenyl-2-cyclopenten-1-one). One third of these compounds possessed an aromatic skeleton. The influences of medium composition and agitation conditions on the odorous profile are discussed. A strain specificity within several spp. was also observed In the experiment, the researchers used many compounds, for example, 3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3COA of Formula: C11H16O3).

3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3) 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.COA of Formula: C11H16O3

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

Ratiometric quantitation of thiol metabolites using non-isotopic mass tags was written by Zhao, Xiaofeng;Hui, Dawn S.;Lee, Richard;Edwards, James L.. And the article was included in Analytica Chimica Acta in 2018.Formula: C9H10O4 This article mentions the following:

Ratiometric quantitation was used in mass spectrometry to account for variations in ionization efficiencies due to heterogenous sample matrixes. Isotopes are most commonly used to achieve ratiometric quantitation because of their ability to coelute chromatog. with each other and to have similar ionization efficiencies. In the work presented here, a new non-isotopic quant. tagging approach is presented which allows chromatog. coelution and similar ionization efficiencies. Using two variations of maleimide tags, t-Bu and cyclohexyl maleimide, thiols are quantified with a high degree of linearity up to five-fold concentration differences. Because these two tags have similar hydrophobcities, they elute simultaneously which allows them to be used for ratiometric quantitation. Beyond the five-fold linear range, signal compression is observed This technique was able to quantify thiol changes in both in vitro pharmacol. treatments as well as in vivo diabetic tissue. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7Formula: C9H10O4).

2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7) 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 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.Formula: C9H10O4

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

Self-powered all weather sensory systems powered by Rhodobacter sphaeroides protein solar cells was written by Paul, Nikita;Suresh, Lakshmi;Vaghasiya, Jayraj V.;Yang, Lin;Zhang, Yaoxin;Nandakumar, Dilip Krishna;Jones, Michael R.;Tan, Swee Ching. And the article was included in Biosensors & Bioelectronics in 2020.Recommanded Product: 605-94-7 This article mentions the following:

Natural photosynthetic proteins can convert solar energy into elec. energy with close to 100% quantum efficiency, and there is increasing interest in their use for sustainable photoelectrochem. devices. The primary processes of photosynthesis remain operational and efficient down to extremely low temperatures, and natural photosystems exhibit a variety of self-healing mechanisms. Herein we demonstrate the use of an amphiphilic triblock copolymer, Pluronic F127, to fabricate a self-healing photosynthetic protein photoelectrochem. cell that operates optimally at sub-zero temperatures A concentration of 30% (weight/weight) Pluronic F127 depressed the f.p. of an electrolyte comprising 50 mM ubiquinone-0 in aqueous buffer such that optimal device solar energy conversion was seen at -12°C rather than at room temperature Multiple bending cycles caused a marked deterioration of the photocurrent response to around a third of initial levels due to damage to the gel phase of the electrolyte, but this could be restored to ~95% by simply cooling and rewarming the device. This self-recoverability of the electrolyte extended the operational life of the protein cell through a process that increased its photoelectrochem. output during the repair. Utility of the cells as components of a touch sensor operational across a wide temperature range, including freezing conditions, is demonstrated. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7Recommanded Product: 605-94-7).

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. 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).Recommanded Product: 605-94-7

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

Synthesis of carbon-11-labeled 4-aryl-4H-chromenes as new PET agents for imaging of apoptosis in cancer was written by Gao, Mingzhang;Wang, Min;Miller, Kathy D.;Hutchins, Gary D.;Zheng, Qi-Huang. And the article was included in Applied Radiation and Isotopes in 2009.Recommanded Product: 57179-35-8 This article mentions the following:

Carbon-11-labeled 4-aryl-4H-chromenes, 4-(3-[¹¹C]methoxy-5-methoxyphenyl)-, 4-(3-bromo-4-[¹¹C]methoxy-5-methoxyphenyl)-, 4-(3-[¹¹C]methoxy-5-methoxyphenyl)-, 4-(3-bromo-4-[¹¹C]methoxy-5-methoxyphenyl)-, 4-(3-[¹¹C]methoxy-5-methoxyphenyl)-, 4-(3-bromo-4-[¹¹C]methoxy-5-methoxyphenyl)-, 4-(3-[¹¹C]methoxy-5-methoxyphenyl)- and 4-(3-bromo-4-[¹¹C]methoxy-5-methoxyphenyl)–2-amino-7-methyl-4,7-dihydropyrano[2,3-e]indole-3-carbonitrile were prepared by O-[¹¹C]methylation of their alc. precursors using [¹¹C]CH₃OTf under basic conditions and isolated by a simplified solid-phase extraction (SPE) method in 30-50% radiochem. yields based on [¹¹C]CO₂ and decay corrected to end of bombardment (EOB). The overall synthesis time from EOB was 15-20 min, the radiochem. purity was >99%, and the specific activity at end of synthesis (EOS) was 111-185 GBq/μmol. In the experiment, the researchers used many compounds, for example, 3-Hydroxy-5-methoxybenzaldehyde (cas: 57179-35-8Recommanded Product: 57179-35-8).

3-Hydroxy-5-methoxybenzaldehyde (cas: 57179-35-8) 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. 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.Recommanded Product: 57179-35-8

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

Alkyne-Tag Raman Imaging for Visualization of Mobile Small Molecules in Live Cells was written by Yamakoshi, Hiroyuki;Dodo, Kosuke;Palonpon, Almar;Ando, Jun;Fujita, Katsumasa;Kawata, Satoshi;Sodeoka, Mikiko. And the article was included in Journal of the American Chemical Society in 2012.Computed Properties of C9H10O4 This article mentions the following:

Alkyne has a unique Raman band that does not overlap with Raman scattering from any endogenous mol. in live cells. Here, we show that alkyne-tag Raman imaging (ATRI) is a promising approach for visualizing nonimmobilized small mols. in live cells. An examination of structure-Raman shift/intensity relationships revealed that alkynes conjugated to an aromatic ring and/or to a second alkyne (conjugated diynes) have strong Raman signals in the cellular silent region and can be excellent tags. Using these design guidelines, we synthesized and imaged a series of alkyne-tagged coenzyme Q (CoQ) analogs in live cells. Cellular concentrations of diyne-tagged CoQ analogs could be semiquant. estimated Finally, simultaneous imaging of two small mols., 5-ethynyl-2′-deoxyuridine (EdU) and a CoQ analog, with distinct Raman tags was demonstrated. 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. 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.Computed Properties of C9H10O4

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