Tag: 100-200

On August 1, 2022, Sukowski, Verena; van Borselen, Manuela; Mathew, Simon; Fernandez-Ibanez, M. Angeles published an article.Application In Synthesis of 2-Methylanisole The title of the article was S,O-Ligand Promoted meta-C-H Arylation of Anisole Derivatives via Palladium/Norbornene Catalysis. And the article contained the following:

Here, a new catalytic system based on palladium/norbornene and an S,O-ligand for the meta-C-H arylation of aryl ethers that significantly outperforms previously reported systems has been developed. The unique ability of this system to employ alkoxyarene substrates bearing electron donating and withdrawing substituents is demonstrated. Addnl., ortho-substituted aryl ethers are well tolerated, overcoming the “ortho constraint”, which is the necessity to have a meta-substituent on the alkoxyarene to achieve high reaction efficiency, by enlisting novel norbornene mediators. Remarkably, for the first time the monoarylation of alkoxyarenes is achieved efficiently enabling the subsequent introduction of a second, different aryl coupling partner to rapidly furnish unsym. terphenyls. Further insight into the reaction mechanism was achieved by isolation and characterization of some Pd-complexes-before and after meta C-H activation-prior to evaluation of their resp. catalytic activities. The experimental process involved the reaction of 2-Methylanisole(cas: 578-58-5).Application In Synthesis of 2-Methylanisole

The Article related to biphenyl terphenyl alkoxy preparation, aryl ether regioselective arylation aryl halide palladium norbornene catalyst, arylation, c鈭抙 activation, ligand design, palladium, reaction mechanisms and other aspects.Application In Synthesis of 2-Methylanisole

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

On May 6, 2016, Li, Jing; Shen, Jiefeng; Xia, Chao; Wang, Yanzhao; Liu, Delong; Zhang, Wanbin published an article.Recommanded Product: 81616-80-0 The title of the article was Asymmetric Hydrogenation of 伪-Substituted Acrylic Acids Catalyzed by a Ruthenocenyl Phosphino-oxazoline-Ruthenium Complex. And the article contained the following:

Asym. hydrogenation of various 伪-substituted acrylic acids was carried out using RuPHOX-Ru as a chiral catalyst under 5 bar H2, affording the corresponding chiral 伪-substituted propanoic acids in up to 99% yield and 99.9% ee. The reaction could be performed on a gram-scale with a relatively low catalyst loading (up to 5000 S/C), and the resulting product (97%, 99.3% ee) can be used as a key intermediate to construct bioactive chiral mols. The asym. protocol was successfully applied to an asym. synthesis of dihydroartemisinic acid, a key intermediate required for the industrial synthesis of the antimalarial drug artemisinin. The experimental process involved the reaction of (S)-2-(2-Methoxyphenyl)propanoic acid(cas: 81616-80-0).Recommanded Product: 81616-80-0

The Article related to chiral propanoic acid preparation, asym hydrogenation acrylic acid ruthenocenyl phosphino oxazoline complex catalyst, dihydroartemisinic acid synthon synthesis antimalarial drug artemisinin and other aspects.Recommanded Product: 81616-80-0

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

On August 25, 2020, Antonopoulou, Maria; Ioannidis, Nikolaos; Kaloudis, Triantafyllos; Triantis, Theodoros M.; Hiskia, Anastasia published an article.Formula: C8H10O2 The title of the article was Kinetic and mechanistic investigation of water taste and odor compound 2-isopropyl-3-methoxy pyrazine degradation using UV-A/Chlorine process. And the article contained the following:

The present study was launched as a continuation of global efforts to tackle problems associated with two important aesthetic characteristics, taste and odor (T&O), of drinking water. The UV-A/Chlorine process, a promising advanced oxidation process (AOP), was evaluated for the first time for the removal of 2-isopropyl-3-methoxy pyrazine (IPMP), a widely reported compound in the literature that causes unpleasant taste and odor when present in water at or below the ng L-1 level. It was found that the studied process was efficient for the removal of IPMP in both ultrapure and drinking water. The initial chlorine dosage influenced significantly the degradation efficiency under initial neutral pH values. Degradation efficiency of IPMP was slightly inhibited by using drinking water as matrix. Scavenging experiments highlighted the significant role of various reactive species (e.g. HO路, ClO路, Cl路, Cl2路-) generated during the process that have not been studied comprehensively until now. In addition, the significant role of HO路 was further verified by ESR spectroscopy (EPR) experiments Overall, the formation of diverse radicals during the UV-A/Chlorine treatment enhanced the degradation of IPMP, promoting mainly the formation of hydroxy, hydroperoxy and dealkylated derivatives In contrast, chlorinated byproducts were only identified in traces. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Formula: C8H10O2

The Article related to chlorine isopropylmethoxy pyrazine degradation uv irradiation drinking water, advanced oxidation process, epr, reactive species, transformation products, uv-a/chlorine, water taste and odor and other aspects.Formula: C8H10O2

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

On August 31, 2020, Wang, Chao; He, Zhongrong; Zhang, Chenxia; Du, Liping; Xiao, Dongguang; Xu, Yongquan published an article.Electric Literature of 91-16-7 The title of the article was Sensory and instrumental analysis-guided exploration of odor-active compounds recovery with oil during the water-boiling extraction of Pu-erh tea. And the article contained the following:

The objective of this study was to identify the released behavior of odor-active compounds of Pu-erh tea during the water-boiling extraction, as well as to explore the feasibility of aroma recovery using absorption oils. The behavior of odor-active compounds was identified by using piecewise recovered condensed water combined with sensory, GC-O, and GC-MS anal. The power-function type kinetic model was the model that best fitted odor intensities, alcs., methoxy-phenolics, esters, aldehydes, ketones, and total compounds of condensed water. The sensory quality of the condensed water was the best when 16% of added water was evaporated Six absorption oils were evaluated, and paraffin oil (35 cSt) performed the best in terms of both absorption efficiency and sensory quality of the essential oil. Under the optimized conditions, the absorption and recovery efficiency of odor compounds reached 54.49% and 39.52%, resp. The alcs., aldehydes, and methoxy-phenolics exhibited higher absorption and recovery efficiency. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Electric Literature of 91-16-7

The Article related to sensory instrumental analysis oil water boiling extraction, aroma recovery, gas chromatography-mass spectrometry, gas chromatography鈥搊lfactometry, paraffin oil, pu-erh tea, sensory analysis and other aspects.Electric Literature of 91-16-7

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

Svejstrup, Thomas D.; Ruffoni, Alessandro; Julia, Fabio; Aubert, Valentin M.; Leonori, Daniele published an article in 2017, the title of the article was Synthesis of Arylamines via Aminium Radicals.Electric Literature of 321-28-8 And the article contains the following content:

Arylamines constitute the core structure of many therapeutic agents, agrochems., and organic materials. The development of methods for the efficient and selective construction of these structural motifs from simple building blocks is desirable but still challenging. We demonstrate that protonated electron-poor O-aryl hydroxylamines give aminium radicals in the presence of Ru(bpy)3Cl2. These highly electrophilic species undergo polarized radical addition to aromatic compounds in high yield and selectivity. We successfully applied this method to the late-stage modification of chiral catalyst templates, therapeutic agents, and natural products. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).Electric Literature of 321-28-8

The Article related to arene aryl hydroxylamine aminium radical photocatalytic regioselective amination, arylamine preparation, n-arylation, aminium radicals, aryl amines, late-stage amination, synthetic methods and other aspects.Electric Literature of 321-28-8

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

Zhang, Dejin; Yang, Guoqiang; Xiong, Junping; Liu, Jia; Hu, Xingbang; Zhang, Zhibing published an article in 2021, the title of the article was An efficient method to prepare aryl acetates by the carbonylation of aryl methyl ethers or phenols.Safety of 2-Methylanisole And the article contains the following content:

A method of preparing aryl acetates ROC(O)CH3 (R = Ph, 2-(propan-2-yl)phenyl, 4-fluorophenyl, 2,3,5-trimethylphenyl, etc.) by the carbonylation of aryl Me ethers ROCH3 or phenols ROH under low CO pressure was developed. Good to excellent yields of aryl acetates were obtained using different substrates, and a possible reaction mechanism was proposed by conducting a series of control experiments This method may provide a potential way for the utilization of lignin. The experimental process involved the reaction of 2-Methylanisole(cas: 578-58-5).Safety of 2-Methylanisole

The Article related to aryl acetate preparation, arylmethyl ether carbonmonoxide methyl iodide carbonylation iridium chloride catalyst, phenol carbonmonoxide methyl iodide carbonylation iridium chloride catalyst and other aspects.Safety of 2-Methylanisole

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

On December 22, 2021, Aykanat, Aylin; Jones, Christopher G.; Cline, Evan; Stolz, Robert M.; Meng, Zheng; Nelson, Hosea M.; Mirica, Katherine A. published an article.Application In Synthesis of 1,2-Dimethoxybenzene The title of the article was Conductive Stimuli-Responsive Coordination Network Linked with Bismuth for Chemiresistive Gas Sensing. And the article contained the following:

This paper describes the design, synthesis, characterization, and performance of a novel semiconductive crystalline coordination network, synthesized using 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) ligands interconnected with bismuth ions, toward chemiresistive gas sensing. Bi(HHTP) exhibits two distinct structures upon hydration and dehydration of the pores within the network, Bi(HHTP)-伪 and Bi(HHTP)-尾, resp., both with unprecedented network topol. (2,3-c and 3,4,4,5-c nodal net stoichiometry, resp.) and unique corrugated coordination geometries of HHTP mols. held together by bismuth ions, as revealed by a crystal structure resolved via microelectron diffraction (MicroED) (1.00 脜 resolution). Good elec. conductivity (5.3 x 10-3 S路cm-1) promotes the utility of this material in the chem. sensing of gases (NH3 and NO) and volatile organic compounds (VOCs: acetone, ethanol, methanol, and isopropanol). The chemiresistive sensing of NO and NH3 using Bi(HHTP) exhibits limits of detection 0.15 and 0.29 ppm (ppm), resp., at low driving voltages (0.1-1.0 V) and operation at room temperature This material is also capable of exhibiting unique and distinct responses to VOCs at ppm concentrations Spectroscopic assessment via XPS and Fourier transform IR spectroscopic methods (i.e., attenuated total reflectance-IR spectroscopy (ATR-IR) and diffuse reflectance IR Fourier transformed spectroscopy (DRIFTS)), suggests that the sensing mechanisms of Bi(HHTP) to VOCs, NO, and NH3 comprise a complex combination of steric, electronic, and protic properties of the targeted analytes. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Application In Synthesis of 1,2-Dimethoxybenzene

The Article related to conductive coordination network linked bismuth chemiresistive gas sensing, bismuth, chemiresistor, coordination network, crystalline, gas sensor, microelectron diffraction, semiconductive and other aspects.Application In Synthesis of 1,2-Dimethoxybenzene

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

On February 19, 2021, Falk, Eric; Gasser, Valentina C. M.; Morandi, Bill published an article.SDS of cas: 321-28-8 The title of the article was Synthesis of N-Alkyl Anilines from Arenes via Iron-Promoted Aromatic C-H Amination. And the article contained the following:

We report both an intermol. C-H amination of arenes to access N-methylanilines and an intramol. variant for the synthesis of tetrahydroquinolines. A newly developed, highly electrophilic aminating reagent was key for the direct synthesis of unprotected N-methylanilines from simple arenes. The reactions display a broad functional group tolerance and employ catalytic amounts of a benign iron salt under mild reaction conditions. 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 arene oxymethylammonium triflate iron catalyst regioselective amination, methyl arylamine preparation, tosyloxy phenylpropyl carbamate iron catalyst regioselective amination, tetrahydroquinoline preparation and other aspects.SDS of cas: 321-28-8

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

On June 30, 2022, Yuan, Donghai; Liu, Guangyu; Qi, Fei; Wang, Jinggang; Kou, Yingying; Cui, Yanqi; Bai, Minghui; Li, Xinyu published an article.SDS of cas: 150-78-7 The title of the article was Kinetic study on degradation of micro-organics by different UV-based advanced oxidation processes in EfOM matrix. And the article contained the following:

Effluent organic matter (EfOM) contains a large number of substances that are harmful to both the environment and human health. To avoid the neg. effects of organic matter in EfOM, advanced treatment of organic matter is an urgent task. Four typical oxidants (H2O2, PS, PMS, NaClO) and UV-combined treatments were used to treat micro-contaminants in the presence or absence of EfOM, because the active radical species produced in these UV-AOPs are highly reactive with organic contaminants. However, the removal efficiency of trace contaminants was greatly affected by the presence of EfOM. The degradation kinetics of two representative micro-contaminants (benzoic acid (BA) and para chlorobenzoic acid (pCBA)) was significantly reduced in the presence of EfOM, compared to the degradation kinetics in its absence. Using the method of competitive kinetics, with BA, pCBA, and 1,4-dimethoxybenzene (DMOB) as probes, the radicals (HO路, SO4-路, ClO路) proved to be the key to reaction species in advanced oxidation processes. UV irradiation on EfOM was not primarily responsible for the degradation of micro-contaminants. The second-order rate constants of the EfOM with radicals were determined to be (5.027 卤 0.643) x 102 (SO4-路), (3.192 卤 0.153) x 104 (HO路), and 1.35 x 106 (ClO路) (mg C/L)-1 s-1. In addition, this study evaluated the production of three radicals based on the concept of Rct, which can better analyze its reaction mechanism. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).SDS of cas: 150-78-7

The Article related to degradation microorg uv advanced oxidation processes efom matrix, advanced oxidation processes (aops), effluent organic matter (efom), hydroxyl radical, second-order reaction rate constants, sulfate radical and other aspects.SDS of cas: 150-78-7

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