Category: ethers-buliding-blocks

On April 7, 2021, Hoque, Emdadul Md; Hassan, Mirja Mahamudul Md; Chattopadhyay, Buddhadeb published an article.Product Details of 1073339-22-6 The title of the article was Remarkably Efficient Iridium Catalysts for Directed C(sp2)-H and C(sp3)-H Borylation of Diverse Classes of Substrates. And the article contained the following:

Here we describe the discovery of a new class of C-H borylation catalysts and their use for regioselective C-H borylation of aromatic, heteroaromatic, and aliphatic systems. The new catalysts have Ir-C(thienyl) or Ir-C(furyl) anionic ligands instead of the diamine-type neutral chelating ligands used in the standard C-H borylation conditions. It is reported that the employment of these newly discovered catalysts show excellent reactivity and ortho-selectivity for diverse classes of aromatic substrates with high isolated yields. Moreover, the catalysts proved to be efficient for a wide number of aliphatic substrates for selective C(sp3)-H bond borylations. Heterocyclic mols. are selectively borylated using the inherently elevated reactivity of the C-H bonds. A number of late-stage C-H functionalization have been described using the same catalysts. Furthermore, we show that one of the catalysts could be used even in open air for the C(sp2)-H and C(sp3)-H borylations enabling the method more general. Preliminary mechanistic studies suggest that the active catalytic intermediate is the Ir(bis)boryl complex, and the attached ligand acts as bidentate ligand. Collectively, this study underlines the discovery of new class of C-H borylation catalysts that should find wide application in the context of C-H functionalization chem. The experimental process involved the reaction of 2-(4-Methoxythiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane(cas: 1073339-22-6).Product Details of 1073339-22-6

The Article related to directed ch borylation aromatic heterocyclic compound iridium cyclooctadiene catalyst, Organometallic and Organometalloidal Compounds: Boron Compounds and other aspects.Product Details of 1073339-22-6

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

On October 31, 2007, Al-Hamarneh, Ibrahim F.; Pedrow, Patrick D.; Goheen, Steven C.; Hartenstine, Michael J. published an article.SDS of cas: 929-37-3 The title of the article was Impedance spectroscopy study of composite thin films of hydrated polyethylene glycol. And the article contained the following:

A polyethylene glycol (PEG) polymer was synthesized using a dip-coating procedure on 316L stainless-steel (SS) substrate precoated with a primer that consisted of radio-frequency inductively coupled plasma-polymerized di(ethylene glycol) vinyl ether (EO2V). The primer and PEG composite film was studied with profilometer, optical microscope, scanning electron microscope (SEM), and a tape test to evaluate thickness, coverage, morphol., and adhesion, resp. Response of the PEG composite film to an applied ac voltage was studied as a function of hydration state using impedance spectroscopy (IS). A resistor/capacitor network was used to interpret the impedance spectra. Elec. capacitance of the PEG film decreased with an exponentially decaying term as dehydration progressed. PEG-film capacitance decay was consistent with a model describing water mols. diffusing through the PEG film. The experimental process involved the reaction of 2-(2-(Vinyloxy)ethoxy)ethanol(cas: 929-37-3).SDS of cas: 929-37-3

The Article related to hydrated polyethylene glycol composite thin film impedance, Electric Phenomena: Conductors, Semiconductors, Resistors, Contacts and other aspects.SDS of cas: 929-37-3

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

On July 31, 2022, Earley, J. D.; Zieleniewska, A.; Ripberger, H. H.; Shin, N. Y.; Lazorski, M. S.; Mast, Z. J.; Sayre, H. J.; McCusker, J. K.; Scholes, G. D.; Knowles, R. R.; Reid, O. G.; Rumbles, G. published an article.Safety of 1,4-Dimethoxybenzene The title of the article was Ion-pair reorganization regulates reactivity in photoredox catalysts. And the article contained the following:

Cyclometalated and polypyridyl complexes of d6 metals are promising photoredox catalysts, using light to drive reactions with high kinetic or thermodn. barriers via the generation of reactive radical intermediates. However, while tuning of their redox potentials, absorption energy, excited-state lifetime and quantum yield are well-known criteria for modifying activity, other factors could be important. Here we show that dynamic ion-pair reorganization controls the reactivity of a photoredox catalyst, [Ir[dF(CF3)ppy]2(dtbpy)]X. Time-resolved dielec.-loss experiments show how counter-ion identity influences excited-state charge distribution, evincing large differences in both the ground- and excited-state dipole moment depending on whether X is a small associating anion (PF6-) that forms a contact-ion pair vs. a large one that either dissociates or forms a solvent-separated pair (BArF4-). These differences correlate with the reactivity of the photocatalyst toward both reductive and oxidative electron transfer, amounting to a 4-fold change in selectivity toward oxidation vs. reduction These results suggest that ion pairing could be an underappreciated factor that modulates reactivity in ionic photoredox catalysts. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Safety of 1,4-Dimethoxybenzene

The Article related to iridium complex photoredox catalyst counter ion effect, Physical Organic Chemistry: Other Reactions, Processes, and Spectra and other aspects.Safety of 1,4-Dimethoxybenzene

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

On March 18, 2004, Whiteford, Jeffery A.; Buretea, Mihai A.; Scher, Erik C. published a patent.Related Products of 146370-51-6 The title of the patent was Organic species that facilitate charge transfer to or from nanostructures. And the patent contained the following:

The present invention provides compositions (small mols., oligomers and polymers) that can be used to modify charge transport across a surface or a nanostructure (e.g., nanocrystal) surface, or within a nanostructure (e.g., nanocrystal)containing matrix, as well as methods for making and using the novel compositions The compositions contain a conjugated organic species and at least one binding group capable of interacting with a nanostructure (e.g., nanocrystal) surface; during use, the compositions are coupled via the binding group to the nanostructure (e.g., nanocrystal) surface, such that the compositions are substantially conductive to electrons and/or holes being transported by/through the nanostructure (e.g., nanocrystal) (e.g., during the process of extracting or injecting the electrons or holes). The compositions of the present invention can optionally be derivatized with addnl. chem. groups, e.g., to enhance the electronic conjugation of the core organic species, to couple adjacent nanostructures (e.g., nanocrystals), or to facilitate dispersion, mixing and/or blending of nanostructures (e.g., nanocrystals) in various matrixes. In one aspect, the present invention provides conductive compositions for modification of charge transport across a nanostructure (e.g., nanocrystal)containing matrix. The conductive composition typically include (1) a conjugated organic moiety as the body structure, or core of the conductive mol.; (2) a nanostructure (e.g., nanocrystal) binding head group coupled to the body structure at a 1st position on the conjugated organic moiety; and (3) a tail group coupled to the body structure at a 2nd position on the conjugated organic moiety. After formation of an exciton in the nanostructure (e.g., nanocrystal) containing matrix, the conductive composition facilitates the injection and/or extraction of charge (electron and/or hole) with respect to the attached nanostructure, thereby modifying charge transport across a nanostructure-containing matrix. The experimental process involved the reaction of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene(cas: 146370-51-6).Related Products of 146370-51-6

The Article related to charge transfer mol electronic device nanocrystal, Electric Phenomena: Conductors, Semiconductors, Resistors, Contacts and other aspects.Related Products of 146370-51-6

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

On November 30, 2020, Bolt, Ya. V.; Tsarkova, A. S.; Baleeva, N. S. published an article.Formula: C8H10O2 The title of the article was 6,7-Dialkoxy-Benzothiophene Derivatives as the Basis for Synthesis of Fluorescent Sensors for Reactive Oxygen Species. And the article contained the following:

Abstract: We suggest the use of the 6,7-dialkoxy-benzothiophene derivatives as the basis for synthesis of fluorescent sensors for reactive oxygen species. The corresponding dioxide, a potential product of oxidation, that might be generated during ROS detection, was synthesized. We have established that benzothiophene derivatives could be successfully used for synthesis of fluorescent sensors, due to the noticeable shift of the absorption and emission maxima that occurs during oxidation The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Formula: C8H10O2

The Article related to dialkoxybenzothiophene fluorescent sensor, Physical Organic Chemistry: Other Reactions, Processes, and Spectra and other aspects.Formula: C8H10O2

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

On December 19, 2009, Barry, Nicola; Brondel, Nicolas; Lawrence, Simon E.; Maguire, Anita R. published an article.Name: Benzyl(4-bromophenyl)sulfane The title of the article was Synthesis of aryl benzyl NH-sulfoximines. And the article contained the following:

Efficient synthesis and characterization of a series of aryl benzyl NH-sulfoximines are described. While N-protected versions of aryl benzyl sulfoximines have been previously described, reports of their deprotection are very limited, presumably due to lability under the typically harsh deprotection conditions which can be employed with the less reactive aryl alkyl derivatives Use of N-cyanosulfoximines as key intermediates overcomes these difficulties leading to an effective synthetic route to these compounds The experimental process involved the reaction of Benzyl(4-bromophenyl)sulfane(cas: 53136-21-3).Name: Benzyl(4-bromophenyl)sulfane

The Article related to aryl benzyl sulfoximine preparation, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Others and other aspects.Name: Benzyl(4-bromophenyl)sulfane

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

On September 5, 2022, Cha, Youngho; Kim, Tae-Kyoung; Lee, Jaewon; Kim, Taeyeon; Hong, Ae-Jung; Zoh, Kyung-Duk published an article.Computed Properties of 150-78-7 The title of the article was Degradation of iopromide during the UV-LED/chlorine reaction: Effect of wavelength, radical contribution, transformation products, and toxicity. And the article contained the following:

Three different UV-LED wavelengths (265, 310, and 365 nm) were used in the UV-LED/chlorine reaction to investigate the degradation mechanism of iopromide (IPM) at different wavelengths, a representative iodinated contrast media compound The degradation rate (k’IPM) increased from pH 6-8 at 265 nm, but, decreased as the pH increased up to 9 at 310 nm and 365 nm. Radical scavenging experiments showed that reactive chlorine species (RCS) are the dominant radical species at all wavelengths, but a higher contribution of OH· was observed at lower pH and longer wavelengths. The contribution of RCS decreased but the contribution of OH· increased as the wavelength increased. Among RCS, the largest contribution was found to be ClO·. Total nine transformation products (TPs) were identified by LC-QTOF-MS during the UV-LED/chlorine reaction at 265 nm. Based on the identified TPs and their time profiles, we proposed a degradation pathway of IPM during UV-LED/chlorine reaction. The Microtox test using V. fischeri showed that no significant increase in toxicity was observed at all wavelengths. The synergistic effect of UV-LED and chlorine was greater at a higher wavelength by the elec. efficiency per order (EEO) calculation The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Computed Properties of 150-78-7

The Article related to iopromide chlorine reaction radical scavenging experiment, hydroxyl radical, microtox test, reactive chlorine species (rcs), transformation products (tps), uv-led, Waste Treatment and Disposal: Chemical Treatment Of Aqueous Wastes and other aspects.Computed Properties of 150-78-7

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

On June 15, 2021, Ma, Chuan; Sanchez-Rodriguez, Daniel; Kamo, Tohru published an article.Application of 578-58-5 The title of the article was A comprehensive study on the oxidative pyrolysis of epoxy resin from fiber/epoxy composites: Product characteristics and kinetics. And the article contained the following:

Thermal treatment has been the most feasible process to recycle valuable carbon fibers and obtain fuel and chems. from waste fiber/epoxy composites. The present work studied the oxidative pyrolysis behaviors of epoxy resin from fiber/epoxy composites using a thermogravimetric apparatus and a fixed-bed reactor, resp. The effects of various O2 concentrations on the thermal behaviors of epoxy resin were investigated and the product characteristics were analyzed. Furthermore, a multi distributed activation energy model (multi-DAEM) was first developed to determine the oxidative pyrolysis kinetics of epoxy resin under various atmospheres. Results showed that the degradation behaviors of epoxy resin were largely altered by the O2 concentrations High O2 concentrations accelerated the primary decomposition of epoxy resin and shifted the oxidation of resin residue into lower temperatures High contents of methylcyclohexene and phenolic derivatives were detected in liquid products. In air atm., high yields of CO and CO2 were generated and distributed in several stages. The kinetic anal. indicated that the multi-DAEM method can well explain the oxidative pyrolysis behaviors of epoxy resin. A min. six-reaction fitting process can perfectly simulate the oxidative pyrolysis of epoxy resin. The predictions for various O2 concentrations were in good agreement with the exptl. tests. The experimental process involved the reaction of 2-Methylanisole(cas: 578-58-5).Application of 578-58-5

The Article related to epoxy resin oxidative thermal treatment pyrolysis simulation, epoxy resin, kinetics, oxidation, product characteristics, pyrolysis, Waste Treatment and Disposal: Chemical Treatment Of Aqueous Wastes and other aspects.Application of 578-58-5

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

On October 31, 2021, Phetcharawetch, Jongkonporn; Betterley, Nolan M.; Reutrakul, Vichai; Soorukram, Darunee; Leowanawat, Pawaret; Kuhakarn, Chutima published an article.Related Products of 157869-15-3 The title of the article was Synthesis of 3-((trifluoromethyl)thio)indoles via trifluoromethylthiolation of 2-alkynyl azidoarenes with AgSCF3. And the article contained the following:

Direct and effective trifluoromethylthiolation of 2-alkynyl azidoarenes 2-CCR-4-R1-5-R2C6H2N3 (R = n-Bu, Ph, thiophen-2-yl, 2H-1,3-benzodioxol-5-yl, etc.; R1 = H, Me, Cl, CF3, etc.; R2 = H, Cl) with silver(I) trifluoromethanethiolate (AgSCF3) has been developed for the construction of 3-((trifluoromethyl)thio)indoles I. The trifluoromethylthiolation protocol is compatible with a broad substrate scope, providing a variety of 3-((trifluoromethyl)thio)indoles in moderate to good yields within one step, open-air, and short reaction time. The experimental process involved the reaction of 2-((4-Methoxyphenyl)ethynyl)aniline(cas: 157869-15-3).Related Products of 157869-15-3

The Article related to trifluoromethylthio indole preparation, alkynyl azidoarene silver trifluoromethanethiolate trifluoromethylthiolation, Heterocyclic Compounds (One Hetero Atom): Areno- and Diarenofurans and other aspects.Related Products of 157869-15-3

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

On March 30, 2020, Zhang, Xiongfei; Zeng, Piaopiao; Zhang, Shuo; Chen, Zhiwei published an article.Related Products of 321-28-8 The title of the article was FeCl3-Mediated Friedel-Crafts Alkylation and Oxidative Annulations: Facile Synthesis of Benzofurans. And the article contained the following:

An efficient method for the facile synthesis of benzofurans through FeCl3-mediated intermol. tandem reaction of anisole with glyoxal monohydrates was reported. This process provided the privileged structures of benzofurans in moderate to good yields under mild conditions. This reaction has many advantages, such as readily available starting materials, high atom economy and good functional group tolerance. This is firstly reported that FeCl3, acting as both a Lewis acid and an oxidant, was used for the synthesis of benzofuran. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).Related Products of 321-28-8

The Article related to benzofuran preparation iron catalyst, anisole glyoxal monohydrate friedel crafts alkylation oxidative annulation, Heterocyclic Compounds (One Hetero Atom): Areno- and Diarenofurans and other aspects.Related Products of 321-28-8

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