Tag: 100-200

Concise access to perimidines by palladium (II) complexes via acceptorless dehydrogenative coupling of alcohols was written by Clinton, Savarimuthu Selvan;Ramesh, Rengan;Malecki, Jan Grzegorz. And the article was included in Applied Organometallic Chemistry in 2022.Related Products of 105-13-5 This article mentions the following:

A facile protocol for the one-pot synthesis of 2,3-dihydro-1H-perimidines via dehydrogenative coupling of easily exploitable benzyl alcs. supported by new Pd(II) complexes has been reported. To accomplish the construction of perimidines, a new set of palladium(II) complexes [Pd(L)Cl (PPh₃)] encompassing biphenyl benzhydrazone ligands I has been reported as catalysts. Structural characterization by elemental anal., FT-IR, NMR (¹H and ¹³C), and mass spectral analyses confirmed the composition of synthesized complexes. The mol. structures of complexes I(R = H, OCH₃), were unequivocally resolved using single-crystal X-ray diffraction. It reveals that the complex espoused distorted square-planar geometry around Pd(II) ion chelated by azomethine nitrogen and imidolate oxygen of biphenyl benzhydrazone ligands with labile chloride and a triphenylphosphine. Further, the selective synthesis of a broad range of functionalized perimidines has been accomplished via ADC of a variety of alcs. with 1,8-diaminonaphthalene. The palladium complexes mediated catalytic synthesis offered good yields of perimidines up to 86% using only 0.5 mol% catalyst loading. A probable mechanism to the formation of perimidines was postulated from the results of control exptl. investigations. The environmentally compassionate, greener ADC protocol progresses via the generation of aldehyde intermediate and releases only water and hydrogen gas. 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. 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).Related Products of 105-13-5

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

syn-Diastereoselective glycolate aldol addition reactions of an N(3)-(p-methoxyphenoxy)acetyloxazolidine-2-thione was written by Haynes, Craig S.;Goodman, Cassie A.;Bruce, Juandah;Genin, Sarah C.;Austermuehle, Brad J.;Leong, Victor L.;Leise, Austin R.;Larson, Robert;Hamaker, Christopher G.;Hitchcock, Shawn R.. And the article was included in Tetrahedron: Asymmetry in 2017.Application of 1877-75-4 This article mentions the following:

An N₃-(p-methoxyphenoxy)acetyloxazolidine-2-thione was synthesized and employed in glycolate asym. aldol addition reactions with aromatic and aliphatic aldehydes. It was determined that the titanium tetrachloride medicated aldol reaction afforded diastereoselectivities that ranged from 75:25 to 94:6 when the reaction was conducted at -78°. The absolute stereochem. of the aldol adducts was determined by ¹H NMR spectroscopy and X-ray crystallog. The ¹H NMR spectra of the aldol adducts contained a signal (the α-proton of the glycolate position of the aldol side chain) that was highly deshielded due to conformational restriction about the N(3)-(p-methoxyphenoxy)acetyl side chain and the oxazolidine-2-thione auxiliary. 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. 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.Application of 1877-75-4

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

Antibacterial Activity and Mechanism of Coenzyme Q₀ Against Escherichia coli was written by Wang, Ruixia;Li, Jiahui;Qu, Geruo;Guo, Du;Yang, Yanpeng;Ma, Xiaoyu;Wang, Muxue;Xu, Yunfeng;Wang, Yutang;Xia, Xiaodong;Shi, Chao. And the article was included in Foodborne Pathogens and Disease in 2021.Application of 605-94-7 This article mentions the following:

Coenzyme Q₀ (CoQ₀) is a natural compound found in Antrodia cinnamomea, which has a variety of biol. activities. Here, the antibacterial activity and possible antibacterial mechanism of CoQ₀ against Escherichia coli were investigated. The antibacterial effect was evaluated by determining min. inhibitory concentration (MIC) and min. bactericidal concentration (MBC) values, and by assessing bacterial survival and the effect on the growth of E. coli after CoQ₀ treatment in Luria-Bertani (LB) broth. To reveal the antibacterial mechanism of CoQ₀, changes in intracellular ATP (ATP) concentration, membrane potential, and bacterial protein content, as well as effects on cell morphol. and membrane integrity, were investigated. Both the MICs and MBCs of CoQ₀ against E. coli were 0.1 mg/mL. After treatment of E. coli (6.5 log colony-forming units/mL) with 0.1 mg/mL of CoQ₀ in LB broth for 3 h, the number of viable cells dropped below the detection limit. In addition, CoQ₀ treatment resulted in the reduction in intracellular ATP concentration, cell membrane hyperpolarization, decreased bacterial protein concentrations, and damage to cell membrane integrity and cellular morphol. These results indicated that CoQ₀ has effective antibacterial activity against E. coli, suggesting potential applications in food industry safety. 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, 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.Application of 605-94-7

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

Ionic transport and mechanical properties of slide-ring gel swollen with Mg-ion electrolytes was written by Nishino, Haruka;Liu, Chang;Kanehashi, Shinji;Mayumi, Koichi;Tominaga, Yoichi;Shimomura, Takeshi;Ito, Kohzo. And the article was included in Ionics in 2020.Reference of 112-49-2 This article mentions the following:

The authors applied a slide-ring (SR) gel to a Mg²⁺ ion gel electrolyte and clarified the elec. and mech. properties in order to achieve a Mg²⁺ ion gel electrolyte with both sufficient mech. strength and high ionic conductivity The SR gel is made from polyrotaxane, which has a structure that consists of cyclic mols., α-cyclodextrins (CDs), threaded by an axial polymer chain, polyethylene glycol (PEG), and crosslinked by divinyl sulfone. Pure glymes and tetraethylene glycol di-Me ether (tetraglyme: G4) dissolving Mg²⁺ ions had no ability to swell the SR gel, whereas diethylene glycol di-Me ether (diglyme: G2) and triethylene glycol di-Me ether (triglyme: G3) dissolving Mg²⁺ ions were able to swell the SR gel. The swelling behavior was strongly dependent on the interaction between Mg²⁺ ions complexed with glymes and ether oxygens of a PEG-based hydroxypropyl PR (HyPR) network. Upon tensile elongation, SR gel swollen with G3 solution dissolving Mg²⁺ ions could be extended by 300%, which indicated the unique property of high ductility. The ionic conductivity of SR gel swollen with G3 dissolving Mg²⁺ ions, which approx. satisfied a Vogel-Tamman-Fulcher (VTF) dependence, was 1.73 mS cm^-1 at room temperature, and the molar conductivity was 67% of that for a pristine G3 solution dissolving Mg²⁺ ions. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Reference 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. 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.Reference of 112-49-2

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

Direct C-H Cyanoalkylation of Heteroaromatic N-Oxides and Quinones via C-C Bond Cleavage of Cyclobutanone Oximes was written by Gu, Yu-Rui;Duan, Xin-Hua;Yang, Lin;Guo, Li-Na. And the article was included in Organic Letters in 2017.Safety of 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione This article mentions the following:

A direct C-H cyanoalkylation of heteroaromatic N-oxides and quinones with cyclobutanone oximes is reported. This redox-neutral, operationally simple cyanoalkylation reaction is successfully amenable to a wide range of heteroaromatic N-oxides, quinones, and cyclobutanone oximes. A novel catalytic system consisting of a nickel source proved crucial for cleavage of the C-C bond of cyclobutanone oximes and for selective C-C bond formation over β-hydride elimination. Mechanistic studies suggest that a radical intermediate might be involved in this transformation. In the experiment, the researchers used many compounds, for example, 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione (cas: 605-94-7Safety 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. 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.Safety of 2,3-Dimethoxy-5-methylcyclohexa-2,5-diene-1,4-dione

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

Nickel-Catalyzed Reductive Bis-Allylation of Alkynes was written by Komeyama, Kimihiro;Yamahata, Yuta;Osaka, Itaru. And the article was included in Organic Letters in 2018.Synthetic Route of C6H10O2 This article mentions the following:

A reductive nickel-catalyzed bis-allylation of alkynes with allyl acetates has been developed, leading to 1,4,7-triene skeletons. This reductive bis-allylation proceeds under mild conditions and exhibits good functional group tolerance in both the allyl acetates and the alkynes. In the experiment, the researchers used many compounds, for example, 1,4-Dimethoxy-2-butyne (cas: 16356-02-8Synthetic Route of C6H10O2).

1,4-Dimethoxy-2-butyne (cas: 16356-02-8) 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. 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 C6H10O2

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

Flower-Like Au@CeO₂ Core-Shell Nanospheres as Efficient Photocatalyst for Multicomponent Reaction of Alcohols and Amidines was written by Tang, Lin;Huang, Fei;Xu, Dongping;Zhang, Xinming;Wang, Zhenghua;Zhang, Wu. And the article was included in Asian Journal of Organic Chemistry in 2022.Quality Control of (4-Methoxyphenyl)methanol This article mentions the following:

Flower-like core-shell nanospheres (Au@CeO₂) were prepared and used as photocatalyst to synthesize 2,4,6-trisubstituted pyrimidines through the three-component reaction of primary alcs., secondary alcs. and benzamidine hydrochlorides with low catalyst loading. A synergistic effect of ceria and gold on the photocatalytic transformation was found, which strongly enhanced the yield of pyrimidines from 58% on Au NPs (6 mg, 3 mol%) up to 97% on Au@CeO₂ (6 mg, 0.4 mol%). The catalyst has also been successfully applied to photocatalytic multicomponent reaction for the synthesis of triazine. The Au@CeO₂ catalyst shows high photocatalytic activity, good recyclability and wide applicability to diverse substrates. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5Quality Control of (4-Methoxyphenyl)methanol).

(4-Methoxyphenyl)methanol (cas: 105-13-5) 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. 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.Quality Control of (4-Methoxyphenyl)methanol

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

Effect of Solvent Polarity on Enthalpies of Solvation of Ethylene Oxide Oligomers was written by Barannikov, Vladimir P.;Guseinov, Sabir S.. And the article was included in Journal of Chemical & Engineering Data in 2020.Application of 112-49-2 This article mentions the following:

The enthalpies of dissolution, Δ_solH_m^{âˆ?/sup>, and solvation, Δ_solvH_mâˆ?/sup>, of ether oligomers CH₃O(CH₂CH₂O)_nCH₃ (n = 1-4) in Et acetate, pyridine, N,N-dimethylformamide, and acetonitrile have been determined from calorimetric measurements at 298.15 K. The values of group contributions of repeated ether units and monoether fragment have been compared on the basis of the additive method. The contributions of ether group to Δ_solvH_mâˆ?/sup> for oligomeric and monomeric mols. coincide within their uncertainties for solutions in highly polar solvents, in contrast to non-polar, moderately polar, and H-bonding solvents. The dependence of ether group contributions to Δ_solvH_mâˆ?/sup> on the electron pair acceptance index of solvents E_TN has been considered. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Application of 112-49-2).}

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. 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.Application of 112-49-2

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

Concentration polarization and metal dendrite initiation in isolated electrolyte microchannels was written by Lee, Youngju;Ma, Bingyuan;Bai, Peng. And the article was included in Energy & Environmental Science in 2020.Name: 2,5,8,11-Tetraoxadodecane This article mentions the following:

Lithium metal penetrations through the liquid-electrolyte-wetted porous separator and solid electrolytes are a major safety concern of next-generation rechargeable metal batteries. Penetrations were frequently discovered to occur through only a few isolated channels, as revealed by “black spots” on both sides of the separator or electrolyte, which manifest a highly localized ionic flux or c.d. Predictions of the penetration time have been difficult due to the hidden and unclear dynamics in these penetration channels. Here, using glass capillary cells, we investigate for the first time the unexpectedly sensitive influence of channel geometry on the concentration polarization and dendrite initiation processes. The characteristic time for the complete depletion of salt concentration at the surface of the advancing electrode, i.e. Sand’s time, exhibits a nonlinear dependence on the curvature of the channel walls along the axial direction. While a pos. deviated Sand’s time scaling exponent can be used to infer a converging penetration area through the electrolyte, a neg. deviated scaling exponent suggests that diffusion limitations can be avoided in expanding channels, such that the fast-advancing tip-growing dendrites will not be initiated. The safety design of rechargeable metal batteries will benefit from considering the true local current densities and the conduction structures. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Name: 2,5,8,11-Tetraoxadodecane).

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

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