Tag: 200-300

Nickel-Catalyzed C(sp²)-H Borylation of Arenes was written by Das, Arpan;Hota, Pradip Kumar;Mandal, Swadhin K.. And the article was included in Organometallics in 2019.SDS of cas: 365564-07-4 This article mentions the following:

In this study, C(sp²)-H borylation of arenes was accomplished by a nickel catalyst, resulting in good yield. Alkyl and alkoxy arenes were successfully functionalized, affording C(sp²)-H borylated compounds It was unraveled that the well-defined abnormal N-heterocyclic carbene based Ni(II) complex breaks into Ni nanoparticles (Ni-NPs), which act as catalytically active species. A series of controlled reactions under stoichiometric conditions along with spectroscopic studies and single-crystal x-ray crystallog. study helped us to understand the formation of Ni-NPs along with formation of a boron(III) compound during this reaction. In the experiment, the researchers used many compounds, for example, 2-(3,5-Dimethoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (cas: 365564-07-4SDS of cas: 365564-07-4).

2-(3,5-Dimethoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (cas: 365564-07-4) 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. 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.SDS of cas: 365564-07-4

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

PVC-NHC-Pd(0): An efficient and reusable heterogeneous catalyst for highly cis-selective semi hydrogenation of alkynes using formic acid as hydrogen source was written by Zheng, Waner;Zhou, Yuemin;Li, Yiqun. And the article was included in Inorganic Chemistry Communications in 2021.HPLC of Formula: 39969-26-1 This article mentions the following:

PVC-NHC-Pd(0) catalyst was prepared and exerted to highly cis-selective semi hydrogenation of diarylacetylene using formic acid as hydrogen source under mild condition. The as-prepared catalyst was well characterized by various techniques such as FT-IR, ¹H NMR, XRD, SEM, EDX, TEM, XPS, and TGA. The catalyst can be easily recovered and recycled without loss of its activity and selectivity owing to the metal-ligand interaction between Pd(0) with polymeric NHC ligands. This protocol is an attractive alternative of the classical Lindlar’s hydrogenation. In the experiment, the researchers used many compounds, for example, 1-Methoxy-4-((4-propylphenyl)ethynyl)benzene (cas: 39969-26-1HPLC of Formula: 39969-26-1).

1-Methoxy-4-((4-propylphenyl)ethynyl)benzene (cas: 39969-26-1) 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.HPLC of Formula: 39969-26-1

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

Practical Electrochemical Iodination of Aromatic Compounds was written by Kataoka, Kazuhide;Hagiwara, Yuji;Midorikawa, Koji;Suga, Seiji;Yoshida, Jun-ichi. And the article was included in Organic Process Research & Development in 2008.Category: ethers-buliding-blocks This article mentions the following:

A practical method for electrochem. iodination of aromatic compounds was developed. The method involves the generation of I⁺ by electrochem. oxidation of I₂ in MeCN using H₂SO₄ as supporting electrolyte followed by the reaction with aromatic compounds The para/ortho selectivity for the reaction of monosubstituted benzenes was significantly improved using dimethoxyethane as cosolvent in the 2nd step. The reaction with highly reactive aromatic compounds gave significant amounts of diiodo compounds in a macrobatch reactor. This problem was solved by fast 1:1 mixing of I⁺ with an aromatic compound using a microflow system consisting of a T-shaped micromixer and a microtube reactor. In the experiment, the researchers used many compounds, for example, 4-Iodo-1-methoxy-2-methylbenzene (cas: 75581-11-2Category: ethers-buliding-blocks).

4-Iodo-1-methoxy-2-methylbenzene (cas: 75581-11-2) 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. 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.Category: ethers-buliding-blocks

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

Catalytic amination in the synthesis of hybrid polymacrocycles comprising porphyrin and azacrown ether moieties was written by Yakushev, Alexei A.;Averin, Alexei D.;Maloshitskaya, Olga A.;Syrbu, Sergei A.;Koifman, Oskar I.;Beletskaya, Irina P.. And the article was included in Mendeleev Communications in 2016.Quality Control of 1,4,7,10-Tetraoxa-13-azacyclopentadecane This article mentions the following:

Pd⁰-catalyzed amination of 3-bromobenzyl-substituted azacrown ethers with propane-1,3-diamine affords the 3-(3-aminopropyl)benzyl derivatives, whose reaction with meso-(bromophenyl)-substituted porphyrins leads to bis- and trismacrocyclic conjugates. In the experiment, the researchers used many compounds, for example, 1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3Quality Control of 1,4,7,10-Tetraoxa-13-azacyclopentadecane).

1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3) 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. 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).Quality Control of 1,4,7,10-Tetraoxa-13-azacyclopentadecane

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

Kamlet-Taft solvatochromic parameters for 25 glycol ether solvents and glycol ether aqueous solutions was written by Lagalante, Anthony F.;Wood, Christian;Clarke, Adam M.;Bruno, Thomas J.. And the article was included in Journal of Solution Chemistry in 1998.Product Details of 20324-33-8 This article mentions the following:

The Kamlet-Taft parameters for 25 glycol ethers and their aqueous solutions were measured. Values for the three Kamlet-Taft parameters: the hydrogen-bond donor ability, hydrogen-bond acceptor ability, and the dipolarity/polarizability, as well as the index of refraction, were determined for each pure glycol either and each aqueous glycol solution A correlation matrix between other known solvent parameters and the measured Kamlet-Taft values revealed only one correlation, suggesting that the three measured Kamlet-Taft parameters for the glycol ethers are independent solvent descriptors. Last, trends in the measured Kamlet-Taft values were related to functional group modifications to the basic glycol ether structure. In the experiment, the researchers used many compounds, for example, 1-((1-((1-Methoxypropan-2-yl)oxy)propan-2-yl)oxy)propan-2-ol (cas: 20324-33-8Product Details of 20324-33-8).

1-((1-((1-Methoxypropan-2-yl)oxy)propan-2-yl)oxy)propan-2-ol (cas: 20324-33-8) 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. 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 20324-33-8

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

Rhodium(NHC)-Catalyzed O-Arylation of Aryl Bromides was written by Kim, Hyun Jin;Kim, Min;Chang, Sukbok. And the article was included in Organic Letters in 2011.Application of 54916-28-8 This article mentions the following:

The first example of the rhodium-catalyzed O-arylation of aryl bromides to give diarylethers, e.g., I, is reported. While the right combination of rhodium species and N-heterocyclic carbene (NHC) offered an effective catalytic system enabling the arylation to proceed, the choice of NHC was determined to be most important. The developed O-arylation protocol has a wide range of substrate scope, high functional group tolerance, and flexibility allowing a complementary route to either N- or O-arylation depending on the choice of NHC. In the experiment, the researchers used many compounds, for example, 1-(4-(4-Methoxyphenoxy)phenyl)ethanone (cas: 54916-28-8Application of 54916-28-8).

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. 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 54916-28-8

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

Specific features of the reduction of disubstituted amide derivatives of p-tert-butylcalix[4]arene was written by Alekseeva, E. A.;Basok, S. S.;Rakipov, I. M.;Mazepa, A. V.;Gren’, A. I.. And the article was included in Russian Journal of Organic Chemistry in 2013.Formula: C10H21NO4 This article mentions the following:

Regardless of the reducing agent, the reduction at 25°C and at higher temperatures of the amide groups in a large number of p-tert-butylcalix[4]arene derivatives containing amide fragments with different substituents on the nitrogen atoms was accompanied by hydrogenolysis of the C-N bond with formation of the corresponding O-(2-hydroxyethyl)calixarenes and by partial cleavage of the ether bond between the calixarene framework and the substituent to give compounds with a lower degree of substitution. In the experiment, the researchers used many compounds, for example, 1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3Formula: C10H21NO4).

1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3) 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. 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: C10H21NO4

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

A concise synthetic approach towards hydroxytetraphenylenes was written by Cui, Jian-Fang;Huang, Hui;Wong, Henry N. C.. And the article was included in Synlett in 2011.Related Products of 56619-93-3 This article mentions the following:

This communication is concerned with our efforts in improving the syntheses of five hydroxytetraphenylens, which we obtained before. A short consecutive direct ortho-metalation and oxidative coupling sequence from N-pivaloyl-protected substituted aniline provided the corresponding 2,2′-diiodobiphenyls. Subsequently, copper(II)-mediated oxidative coupling of 2,2′-diiodobiphenyls successfully led to the formation of the corresponding hydroxytetraphenylenes. This is the first time that hydroxytetraphenylenes were all realized via oxidative cross-coupling reactions from the corresponding 2,2′-diiodobiphenyls. In the experiment, the researchers used many compounds, for example, N-(3-Methoxyphenyl)pivalamide (cas: 56619-93-3Related Products of 56619-93-3).

N-(3-Methoxyphenyl)pivalamide (cas: 56619-93-3) 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. 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.Related Products of 56619-93-3

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

Supported liquid membrane transport of alkali metal cations by monoazacryptand with a partially fluorinated sidearm and the corresponding monoazacrown ethers was written by Nakatsuji, Yohji;Fujimoto, Shingo;Nakamura, Misako;Muraoka, Masahiro. And the article was included in Journal of Oleo Science in 2010.Category: ethers-buliding-blocks This article mentions the following:

Monoazacryptand [20.18.18] (1), monoaza-15-crown-5 (2a), and monoaza-18-crown-6 (2b) with a partially fluorinated sidearm were newly prepared and their transport abilities were estimated in a supported liquid membrane containing a mixture of 2-(perfluorohexyl) Et alc. and 2- (perfluorooctyl) Et alc. In competitive passive transport of K⁺, Na⁺, and Li⁺ under neutral conditions, the K⁺ selectivity increased in the order: ionophore 2a<ionophore 2b<ionophore 1; whereas, the transport velocity increased in the order: ionophore 2a<ionophore 1<ionophore 2b. On the other hand, only ionophore 1 successfully transported K⁺ in the transport from the neutral source phase to the acidic receiving phase. This result was reasonably explained by considering the excellent K⁺ complexing ability of monoazacryptand (1) in comparison with that of monoazacrown ethers (2a and 2b). In the experiment, the researchers used many compounds, for example, 1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3Category: ethers-buliding-blocks).

1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3) 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.Category: ethers-buliding-blocks

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

Formal C-H Carboxylation of Unactivated Arenes was written by Gevorgyan, Ashot;Hopmann, Kathrin H.;Bayer, Annette. And the article was included in Chemistry – A European Journal in 2020.Recommanded Product: 365564-07-4 This article mentions the following:

A formal C-H carboxylation of unactivated arenes e.g., I using CO₂ in green solvents is described. The present strategy combines a sterically controlled Ir-catalyzed C-H borylation followed by a Cu-catalyzed carboxylation of the in situ generated organoboronates. The reaction is highly regioselective for the C-H carboxylation of unactivated arenes e.g., I (1,3-disubstituted and 1,2,3-trisubstituted benzenes, 1,2- or 1,4-sym. substituted benzenes, fluorinated benzenes and different heterocycles). The developed methodol. was applied to the late-stage C-H carboxylation of com. drugs and ligands. In the experiment, the researchers used many compounds, for example, 2-(3,5-Dimethoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (cas: 365564-07-4Recommanded Product: 365564-07-4).

2-(3,5-Dimethoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (cas: 365564-07-4) 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. 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.Recommanded Product: 365564-07-4

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