Tag: 100-200

Mondal, Haripriyo; Sk, Raja Md; Maji, Modhu Sudan published an article in 2020, the title of the article was Cooperativity within the catalyst: alkoxyamide as a catalyst for bromocyclization and bromination of (hetero)aromatics.Application In Synthesis of 2-Methylanisole And the article contains the following content:

N-Methoxy-1-butanesulfonamide was a recyclable catalyst for the activation of N-bromosuccinimide to perform bromocyclization and bromination reactions of unsaturated carboxylic acids, alkenes and indoles with pendant nucleophiles, and arenes in heptane, where adequate suppression of the background reactions was observed, to yield bromolactones, bromomethyl-substituted heterocycles, fused indolines such as pyrroloindolines, and aryl bromides. The key feature of the active site is the alkoxy group attached to the sulfonamide moiety, which facilitates the acceptance as well as the delivery of bromonium species from the bromine source to the substrates. The experimental process involved the reaction of 2-Methylanisole(cas: 578-58-5).Application In Synthesis of 2-Methylanisole

The Article related to bromolactone aryl bromide chemoselective preparation, methoxybutanesulfonamide catalyst bromosuccinimide mediated bromocyclization bromination, chemoselective bromination bromocyclization methoxysulfonamide catalyst bromosuccinimide and other aspects.Application In Synthesis of 2-Methylanisole

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

Wu, Zhuo; Jiang, Hang; Zhang, Yanghui published an article in 2021, the title of the article was Pd-catalyzed cross-electrophile Coupling/C-H alkylation reaction enabled by a mediator generated via C(sp3)-H activation.Formula: C8H10O And the article contains the following content:

Pd-catalyzed cascade cross-electrophile coupling and C-H alkylation reaction of 2-iodo-alkoxylarenes with alkyl chlorides were reported. Methoxy and benzyloxy groups, which were ubiquitous functional groups and common protecting groups, were utilized as crucial mediators via primary or secondary C(sp3)-H activation. The reaction provided an innovative and convenient access for the synthesis of alkylated phenol derivatives, which were widely found in bioactive compounds and organic functional materials. The experimental process involved the reaction of 2-Methylanisole(cas: 578-58-5).Formula: C8H10O

The Article related to methoxy alkylarene preparation regioselective, haloalkane methoxy aryliodide palladium tandem alkylation oxidative cross coupling, benzyloxy alkylbenzene preparation regioselective, phenyl benzyloxyiodide haloalkane palladium tandem alkylation oxidative cross coupling and other aspects.Formula: C8H10O

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

On March 17, 2017, Huang, He; Wu, Yang; Zhang, Wen; Feng, Chun; Wang, Bi-Qin; Cai, Wan-Fei; Hu, Ping; Zhao, Ke-Qing; Xiang, Shi-Kai published an article.SDS of cas: 321-28-8 The title of the article was Copper-Catalyzed Regioselective C-H Sulfonyloxylation of Electron-Rich Arenes with p-Toluenesulfonic Acid and Sulfonyloxylation of Aryl(mesityl)iodonium Sulfonates. And the article contained the following:

Copper-catalyzed regioselective C-H sulfonyloxylation of electron-rich arenes with p-toluenesulfonic acid has been developed. Electron-rich benzene derivatives and heteroarenes can undergo this C-H sulfonyloxylation reaction to generate aryl tosylates. Furthermore, sulfonyloxylation of aryl(mesityl)iodonium sulfonates has also been investigated. Both aryl(mesityl)iodonium tosylates and triflates can react smoothly to get aryl sulfonates. The formed aryl sulfonates, e.g., I, can be converted to phenols, as well as used as good partners of cross-coupling reactions. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).SDS of cas: 321-28-8

The Article related to toluenesulfonic acid electron rich arene regioselective ch sulfonyloxylation copper, arylmesityliodonium sulfonate electron rich arene regioselective ch sulfonyloxylation, aryl sulfonate regioselective preparation, copper regioselective ch sulfonyloxylation catalyst and other aspects.SDS of cas: 321-28-8

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

On May 7, 2021, Kim, Hyun Tae; Kang, Eunsu; Kim, Minkyu; Joo, Jung Min published an article.Related Products of 578-58-5 The title of the article was Synthesis of Bidentate Nitrogen Ligands by Rh-Catalyzed C-H Annulation and Their Application to Pd-Catalyzed Aerobic C-H Alkenylation. And the article contained the following:

A new class of bidentate ligands was prepared by a modular approach involving Rh-catalyzed C-H annulation reactions. The resulting conformationally constrained ligands enabled the Pd-catalyzed C-H alkenylation at electron-rich and sterically less hindered positions of electron-rich arenes while promoting the facile oxidation of Pd(0) intermediates by oxygen. This newly introduced ligand class was complementary to the ligands developed for Pd-catalyzed oxidative reactions and may find broad application in transition-metal-catalyzed reactions. The experimental process involved the reaction of 2-Methylanisole(cas: 578-58-5).Related Products of 578-58-5

The Article related to bidentate pyrazolonaphthyridine ligand palladium catalyst preparation, aryl amine terminal alkene pyrazolonaphthyridine palladium catalyst regioselective alkenylation, alkoxyarene terminal alkene pyrazolonaphthyridine palladium catalyst regioselective alkenylation and other aspects.Related Products of 578-58-5

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

On May 7, 2021, Kim, Hyun Tae; Kang, Eunsu; Kim, Minkyu; Joo, Jung Min published an article.SDS of cas: 91-16-7 The title of the article was Synthesis of Bidentate Nitrogen Ligands by Rh-Catalyzed C-H Annulation and Their Application to Pd-Catalyzed Aerobic C-H Alkenylation. And the article contained the following:

A new class of bidentate ligands was prepared by a modular approach involving Rh-catalyzed C-H annulation reactions. The resulting conformationally constrained ligands enabled the Pd-catalyzed C-H alkenylation at electron-rich and sterically less hindered positions of electron-rich arenes while promoting the facile oxidation of Pd(0) intermediates by oxygen. This newly introduced ligand class was complementary to the ligands developed for Pd-catalyzed oxidative reactions and may find broad application in transition-metal-catalyzed reactions. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).SDS of cas: 91-16-7

The Article related to bidentate pyrazolonaphthyridine ligand palladium catalyst preparation, aryl amine terminal alkene pyrazolonaphthyridine palladium catalyst regioselective alkenylation, alkoxyarene terminal alkene pyrazolonaphthyridine palladium catalyst regioselective alkenylation and other aspects.SDS of cas: 91-16-7

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

On October 11, 2020, Poole, Colin F. published an article.Computed Properties of 93-04-9 The title of the article was Selection of calibration compounds for selectivity evaluation of wall-coated, open-tubular columns for gas chromatography by the solvation parameter model. And the article contained the following:

To facilitate faster selectivity evaluation of wall-coated, open-tubular columns using the solvation parameter model a reduced set of calibration compounds is identified and validated for the temperature ranges 60-140°C and 160-260°C. The Kennard-Stone uniform mapping algorithm is used to identify the calibration compounds from a larger database of compounds with known retention properties previously adopted for column selectivity evaluation. Thirty-five compounds for each temperature range are required to minimize the standard deviation of the system constants used for selectivity evaluation and to minimize differences between system constants determined by conventional calibration and the reduced calibration compounds The models for the reduced calibration compounds on ten siloxane-based and poly(ethylene glycol) stationary phases have a coefficient of determination of 0.984 to 0.998 and standard error of the estimate of 0.012 to 0.30. The predictive capability of models is evaluated for the reduced sets of calibration compounds using external test sets with ranking of the calibration models by changes in the average error, average absolute error and root mean square error of prediction for the test sets. For the selected thirty-five reduced calibration compounds the range for the average absolute error was 0.014 to 0.033 and 0.016 to 0.040 for the root mean square error of prediction for the independent test sets. The experimental process involved the reaction of 2-Methoxynaphthalene(cas: 93-04-9).Computed Properties of 93-04-9

The Article related to selection calibration compound selectivity evaluation wall coated, open tubular column gas chromatog solvation parameter model, calibration compounds, gas chromatography, open-tubular columns, selectivity, solvation parameter model, system constants, wall-coated and other aspects.Computed Properties of 93-04-9

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

On July 21, 2020, Zheng, Wenxiao; Zhu, Liuyi; Liang, Sheng; Ye, Jinshao; Yang, Xin; Lei, Zhenchao; Yan, Zhang; Li, Yongdong; Wei, Chaohai; Feng, Chunhua published an article.Formula: C8H10O2 The title of the article was Discovering the Importance of ClO• in a Coupled Electrochemical System for the Simultaneous Removal of Carbon and Nitrogen from Secondary Coking Wastewater Effluent. And the article contained the following:

inorganic pollutants in actual wastewater, e.g., halides and CO32-/HCO3-, may have neg. effects on electrochem. system performance due to their capability of quenching HO-. however, the authors determined the presence of Cl- and HCO3- in an electrochem. system was conducive to ClO- formation, which played an important role in promoting simultaneous removal of bio-refractory organics and N from secondary coking wastewater effluent. a 6-h operation of the coupled electrochem. system (undivided electrolytic cell with PbO2/Ti anode and Cu/Zn cathode) at a 37.5 mA/cm2 c.d. removed 87.8% of COD and 86.5% total N. ESR results suggested ClO- formation in the system and probe experiments confirmed the ClO- predominance, whose steady-state concentrations (8.08 x 10-13 M) were 16.4, 26.5, and 1609.5 times those of Cl2- (4.92 x 10-14 M), OH- (3.05 x 10-14 M), and Cl- (5.02 x 10-16 M), resp. the COD removal rate constant and the Faradaic efficiency of anodic oxidation obtained with Cl- and HCO3- was linearly proportional to the natural logarithm of the ClO- concentration; specific energy consumption was inversely correlated to it, demonstrating the crucial role of ClO- for pollutant removal. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Formula: C8H10O2

The Article related to electrochem oxidation wastewater treatment secondary coking effluent inorganic removal, simultaneous organic carbon total nitrogen coking wastewater, secondary coking effluent simultaneous cod total nitrogen removal, wastewater escherichia toxicity biol stress and other aspects.Formula: C8H10O2

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

On August 17, 2007, Arvela, Riina K.; Pasquini, Serena; Larhed, Mats published an article.Electric Literature of 929-37-3 The title of the article was Highly Regioselective Internal Heck Arylation of Hydroxyalkyl Vinyl Ethers by Aryl Halides in Water. And the article contained the following:

Highly regioselective and fast Pd(0)-catalyzed internal α-arylation of ethylene glycol vinyl ether with aryl halides was shown to be possible in water without the need for any halide scavengers or ionic liquid additives. This presents the first case of water being utilized in the selective arylation of electron-rich olefins. Resulting α-products, e.g. I, were hydrolyzed and isolated as corresponding acetophenones, e.g. II, in good to excellent yields when using aryl bromides and with good to moderate yields in the case of aryl iodides. Microwave irradiation was shown to be beneficial in activation of aryl chlorides toward the internal Heck arylation. The scope of the protocol was further increased to include different hydroxyalkyl vinyl ethers, these all giving selectively only branched α-products. The active role of the hydroxy group in directing the regioselectivity toward internal arylation of electron-rich olefins, even in nonpolar toluene, was revealed. The experimental process involved the reaction of 2-(2-(Vinyloxy)ethoxy)ethanol(cas: 929-37-3).Electric Literature of 929-37-3

The Article related to acetophenone preparation green chem, hydroxyalkyl vinyl ether aryl bromide iodide chloride heck arylation, regioselective internal heck arylation palladium catalysis microwave irradiation, hydroxy neighboring group effect regioselective internal heck arylation and other aspects.Electric Literature of 929-37-3

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

On September 6, 2021, Kang, Qi-Kai; Lin, Yunzhi; Li, Yuntong; Xu, Lun; Li, Ke; Shi, Hang published an article.Quality Control of 2-Methylanisole The title of the article was Catalytic SNAr Hydroxylation and Alkoxylation of Aryl Fluorides. And the article contained the following:

A reliable method for accessing phenols ArOH (Ar = C6H5, 4-CH3OC6H4, 9H-fluoren-2-yl, etc.) and Ph alkyl ethers Ar1OR (Ar1 = 4-CH3C6H4, 9H-fluoren-2-yl, 1-methyl-2-oxo-2,3-dihydro-1H-indol-5-yl, etc.; R = Me, cyclohexylmethyl, oxan-4-yl, etc.) via catalytic SnAr reactions has been described. The method is applicable to a broad array of electron-rich and neutral aryl fluorides ArF and Ar1F, which are inert under classical SnAr conditions. Although the mechanism of SNAr reactions involving metal arene complexes is hypothesized to involve a stepwise pathway (addition followed by elimination), exptl. data that support this hypothesis is still under exploration. Mechanistic studies and DFT calculations suggest either a stepwise or stepwise-like energy profile. Notably, a rhodium η5-cyclohexadienyl complex intermediate with an sp3-hybridized carbon bearing both a nucleophile and a leaving group was isolated. The experimental process involved the reaction of 2-Methylanisole(cas: 578-58-5).Quality Control of 2-Methylanisole

The Article related to phenol preparation dft mechanistic study, water aryl fluoride hydroxylation rhodium catalyst, ester preparation dft mechanistic study, aryl fluoride alc alkoxylation rhodium catalyst, c−o bond formation, meisenheimer-type intermediate, rhodium, η6-coordination and other aspects.Quality Control of 2-Methylanisole

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

On September 6, 2021, Kang, Qi-Kai; Lin, Yunzhi; Li, Yuntong; Xu, Lun; Li, Ke; Shi, Hang published an article.Application of 321-28-8 The title of the article was Catalytic SNAr Hydroxylation and Alkoxylation of Aryl Fluorides. And the article contained the following:

A reliable method for accessing phenols ArOH (Ar = C6H5, 4-CH3OC6H4, 9H-fluoren-2-yl, etc.) and Ph alkyl ethers Ar1OR (Ar1 = 4-CH3C6H4, 9H-fluoren-2-yl, 1-methyl-2-oxo-2,3-dihydro-1H-indol-5-yl, etc.; R = Me, cyclohexylmethyl, oxan-4-yl, etc.) via catalytic SnAr reactions has been described. The method is applicable to a broad array of electron-rich and neutral aryl fluorides ArF and Ar1F, which are inert under classical SnAr conditions. Although the mechanism of SNAr reactions involving metal arene complexes is hypothesized to involve a stepwise pathway (addition followed by elimination), exptl. data that support this hypothesis is still under exploration. Mechanistic studies and DFT calculations suggest either a stepwise or stepwise-like energy profile. Notably, a rhodium η5-cyclohexadienyl complex intermediate with an sp3-hybridized carbon bearing both a nucleophile and a leaving group was isolated. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).Application of 321-28-8

The Article related to phenol preparation dft mechanistic study, water aryl fluoride hydroxylation rhodium catalyst, ester preparation dft mechanistic study, aryl fluoride alc alkoxylation rhodium catalyst, c−o bond formation, meisenheimer-type intermediate, rhodium, η6-coordination and other aspects.Application of 321-28-8

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