Tag: 100-200

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

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

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

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

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

Synthesis of 2-[(aryloxy)methyl]benzimidazole derivatives was written by Cui, Wen-hui;Zhang, You-min;Wei, Tai-bao. And the article was included in Hecheng Huaxue in 2006.Electric Literature of C9H10O4 This article mentions the following:

Twelve derivatives of 2-[(aryloxy)methyl]-1H-benzimidazole were synthesized using HCl as a catalyst and the structures were identified by ¹H NMR, IR and elemental anal. Six of the compounds are reported for the first time. 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. 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.Electric Literature of C9H10O4

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

Aromatic Homologation by Non-Chelate-Assisted Rh^III-Catalyzed C-H Functionalization of Arenes with Alkynes was written by Pham, Manh V.;Cramer, Nicolai. And the article was included in Angewandte Chemie, International Edition in 2014.Electric Literature of C6H10O2 This article mentions the following:

Larger condensed arenes are of interest owing to their electro- and photochem. properties. An efficient synthesis is the catalyzed aromatic annulation of a smaller arene with two alkyne mols. Besides difunctionalized starting materials, directed C-H functionalization can be used for such aromatic homologation. However, thus far the requirement of either pre-functionalized substrates or suitable directing groups were limiting this approach. Herein, we describe a rhodium(III)-catalyzed method allowing the use of completely unbiased arenes and internal alkynes. The reaction works best with copper(II) 2-ethylhexanoate and decabromodiphenyl ether as the oxidant combination. E.g., in presence of [(Cp^*RhCl₂)₂], copper(II) 2-ethylhexanoate, and decabromodiphenyl ether, homologation of naphthalene with BuCCBu gave 60% anthracene derivative (I). This aromatic annulation tolerates a variety of functional groups and delivers homologated condensed arenes. Aside from simple benzenes, naphthalenes, and higher condensed arenes provide access to highly substituted and highly soluble acene structures having important electronic and photophys. properties. In the experiment, the researchers used many compounds, for example, 1,4-Dimethoxy-2-butyne (cas: 16356-02-8Electric Literature of C6H10O2).

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

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

Total Synthesis of a Noricumazole A Library and Evaluation of HCV Inhibition was written by Barbier, Jenny;Wegner, Jens;Benson, Stefan;Gentzsch, Juliane;Pietschmann, Thomas;Kirschning, Andreas. And the article was included in Chemistry – A European Journal in 2012.Computed Properties of C8H9BO4 This article mentions the following:

The total synthesis of 16 new ion channel inhibitors derived from noricumazole A I (X = O), a secondary metabolite from the myxobacterium Sorangium cellulosum, is reported. Particular focus of library design is put on stereochem. permutations in the central region (C9 and C11), the oxazole moiety and the side chain at C4 of the isochromanone moiety. Noricumazole A and all new noricumazole derivatives were tested in an assay system to determine the inhibitory effect on the hepatitis C virus (HCV) life cycle. Most of the compounds are moderate to strong HCV inhibitors (350 nM-6 nM), but also exert pronounced cytotoxicity. In contrast, the thiazole analog of noricumazole A, I (X = S), is a strong HCV inhibitor with only moderate cytotoxic property. It may become a lead structure with a good therapeutic index (CC₅₀/IC₅₀) of greater than 10. In the experiment, the researchers used many compounds, for example, 3-Formyl-2-methoxyphenylboronic acid (cas: 480424-49-5Computed Properties of C8H9BO4).

3-Formyl-2-methoxyphenylboronic acid (cas: 480424-49-5) 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. 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 C8H9BO4

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

Microwave-assisted synthesis of 4-amino-3-[2-benzo[b]furyl]-5-mercapto-1,2,4-triazole and its derivatives was written by Wang, Xi-Cun;Quan, Zheng-Jun;Li, Zheng. And the article was included in Youji Huaxue in 2005.Electric Literature of C9H10O4 This article mentions the following:

4-Amino-3-(2-benzofuryl)-5-mercapto-1,2,4-triazole was synthesized by the reactions of 2-benzo[b]furoyl hydrazine with CS₂ and next hydrazine under microwave irradiation Treatment of the resulting 4-amino-5-mercapto-1,2,4-triazole with aromatic carboxylic acids (or aryloxyacetic acids), α-bromoacetophenones and aromatic aldehydes under microwave irradiation yielded the corresponding 1,2,4-triazolo[3,4-b]-1,3,4-thiadiazoles, 1,2,4-triazolo[3,4-b]-1,3,4-thiadiazines and 4-arylideneamino-5-mercapto-1,2,4-triazole in good to moderate yields, resp. The structures of all these new compounds were confirmed by elemental analyses, IR, ¹H NMR and MS spectra. 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. 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.Electric Literature of C9H10O4

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

Hypervalent Iodine(III)-Induced Intramolecular Cyclization of α-(Aryl)alkyl-β-dicarbonyl Compounds: A Convenient Synthesis of Benzannulated and Spirobenzannulated Compounds was written by Arisawa, Mitsuhiro;Ramesh, Namakkal G.;Nakajima, Makiko;Tohma, Hirofumi;Kita, Yasuyuki. And the article was included in Journal of Organic Chemistry in 2001.Application of 3929-47-3 This article mentions the following:

A novel hypervalent iodine(III)-induced direct intramol. cyclization of α-(aryl)alkyl-β-dicarbonyl compounds has been described. Both meta- and para-substituted phenol ether derivatives containing acyclic or cyclic 1,3-dicarbonyl moieties at the side chain undergo this reaction in a facile manner. The reactions afford benzannulated and spirobenzannulated compounds that are of biol. importance. The reaction is found to be general, mild, and high yielding. The mechanism of the reaction has been shown to involve a cation radical intermediate. In the experiment, the researchers used many compounds, for example, 3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3Application of 3929-47-3).

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. 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).Application of 3929-47-3

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