Month: November 2022

Desulfurization of thiophenes in oils into H₂SO₄ using molecular oxygen was written by Yang, Chun;Ji, Hongwei;Chen, Chuncheng;Ma, Wanhong;Zhao, Jincai. And the article was included in Applied Catalysis, B: Environmental in 2018.Related Products of 638-02-8 The following contents are mentioned in the article:

Because the reactivity of aromatic C-S bond is almost equal to that of hydrocarbon compounds of oils, it is difficult to convert thiophene and its derivatives into inorganic SO_x using the current mild oxidative desulfurization (ODS) strategies for the production of clean fuels. Instead, they are generally transformed into sulfoxides and sulfones, which are not easily separated from fuel feedstock. Herein, we report an approach in which the com. available heteropolyacid H₃PW₁₂O₄₀ in a CH₃CN/iso-octane biphasic system can photocatalytically activate dioxygen to convert most thiophenic species to H₂SO₄ (yield ∼ 75%). This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Related Products of 638-02-8).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is used as starting material for the synthesis of bioactive molecules. The core structure is a part of various pharmaceutical substances and natural products. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, and sertaconazole, and also BTCP.Related Products of 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Effects of sulfur compounds of Toona sinensis seedlings on the aroma compounds was written by Li, Nan;Wang, Hao-yu;Zhao, Fang;Liu, Chang-jin. And the article was included in Shipin Yanjiu Yu Kaifa in 2017.Electric Literature of C6H8S The following contents are mentioned in the article:

Characteristic flavor substance were condensed and analyzed by using Headspace Solid-phase Mi-croextn. (HS-SPME) followed by Gas Chromatog.-Mass Spectrometry (GC-MS) and Gas Chro-matog.-Olfactometry-Mass Spectomety (GC-O-MS). This research studied the chem. composition of the volatile compounds of Toona sinensis. The study got trans-bis-(1-proenyl) disulfide firstly which could transform into prop-1-ene-1-thiol and 3, 4-dimethylthiophene from Toona sinensis at the growth stage. The sulfur compounds structure of Toona sinensis was similar to the Allium plants in the aspect of chem. composition, which lead to have same characteristic flavor substances between Toona sinensis and Allium plants. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Electric Literature of C6H8S).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The electrophilic substitution of benzothiophene systems is much less regioselective than that of indoles. It has been used as a raw material for the synthesis of biologically active structures and is found in pharmaceuticals such as leukotriene synthesis inhibitors and antifungals, as well as in many natural products.Electric Literature of C6H8S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Semi-empirical estimation of ion-specific cross sections in electron ionization of molecules was written by Irikura, Karl K.. And the article was included in Journal of Chemical Physics in 2016.Recommanded Product: 2,5-Dimethylthiophene The following contents are mentioned in the article:

Partial ionization cross sections are the absolute yields of specific ions from an electron-mol. collision. They are necessary for modeling plasmas and determining the sensitivity of mass spectrometers, among other applications. They can be predicted semi-empirically when exptl. data are available for channel-specific oscillator strengths. However, such data are seldom available because they are obtained using specialized apparatus Here, an alternative semi-empirical method is proposed that exploits exptl. data obtained using ordinary mass spectrometers, as corrected for mass discrimination. Data are presented for an incident electron energy of 70 eV. (c) 2016 American Institute of Physics. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Recommanded Product: 2,5-Dimethylthiophene).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene finds use in research as a starting material for the synthesis of larger, usually bioactive structures. Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.Recommanded Product: 2,5-Dimethylthiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Efficiency Enhancement of a Photocatalytic Decarbonylation of an Aminocyclopropenone by Benzothiophene Substitution was written by Mishiro, Kenji;Nomura, Mitsuki;Furuyama, Taniyuki;Kunishima, Munetaka. And the article was included in Journal of Organic Chemistry in 2021.Application of 638-02-8 The following contents are mentioned in the article:

To improve the efficiency of the photocatalytic decarbonylation of cyclopropenones, the effects of substituents on cyclopropenone were explored. A benzothiophene-substituted aminocyclopropenone exhibited significantly improved decarbonylation efficiency to produce the corresponding ynamine, which worked as a potent dehydration condensation agent. The benzothiophene derivative was applicable to the photocatalytic reaction in the presence of potential excited-state quenchers such as oxygen and anilines. The high catalyst sensitivity would be attributed to the involvement of triplet energy transfer reaction pathway, which was not observed in the reaction with previously reported aminocyclopropenones. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Application of 638-02-8).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is used as starting material for the synthesis of bioactive molecules. The core structure is a part of various pharmaceutical substances and natural products. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Application of 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Metal-Free Oxidative Cross Coupling of Indoles with Electron-Rich (Hetero)arenes was written by Caramenti, Paola;Nandi, Raj Kumar;Waser, Jerome. And the article was included in Chemistry – A European Journal in 2018.Product Details of 638-02-8 The following contents are mentioned in the article:

A new method for the synthesis of bi-heteroaryls is reported, based on the umpolung of indoles with benziodoxol(on)e hypervalent iodine reagents (IndoleBX). The oxidative coupling of IndoleBX with an equimolar amount of electron-rich benzenes, indoles, pyrroles, and thiophenes proceeded under mild transition-metal-free conditions. Functionalized non-sym. bi-indolyl heterocycles were accessed efficiently. Introduction of a new type of C2-substituted indole benziodoxole reagents further allowed extending the scope of the reaction to NH unprotected and C3-alkylated indoles. The obtained bi-heterocycles are important building blocks in synthetic and medicinal chem., and could be easily transformed into more complex heterocyclic systems. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Product Details of 638-02-8).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Product Details of 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Efficient Hydrogenation of Biomass Oxoacids to Lactones by Using NHC-Iridium Coordination Polymers as Solid Molecular Catalysts was written by Liu, Yaoqi;Sun, Zheming;Huang, Changyu;Tu, Tao. And the article was included in Chemistry – An Asian Journal in 2017.Application In Synthesis of 2,5-Dimethylthiophene The following contents are mentioned in the article:

A series of NHC-iridium coordination polymers have proven to be robust, efficient and recyclable solid mol. catalysts toward the hydrogenation of biomass levulinic acid (LA) to γ-valerolactone. Along with quant. yields attained at 0.01 mol % catalyst loading under 50 atm of H₂, the solid mol. catalyst was readily recovered and reused for 12 runs without obvious loss of the selectivity and activity. Remarkably, up to 1.2×10⁵ TON, an unprecedented value could be achieved in this important transformation. In addition, a number of LA homologues, analogs and derivatives were well tolerated to deliver various intriguing and functional lactones in good to excellent yields, which further confirmed the feasibility of the solid mol. catalysts. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Application In Synthesis of 2,5-Dimethylthiophene).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Functionalized benzothiophenes are important constructs found in molecules with wide ranging biological activity and in organic materials. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, sertaconazole, and also BTCP.Application In Synthesis of 2,5-Dimethylthiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

C-H heteroarylation of aromatics via catalyst free S_N2′ coupling cycloaromatization was written by Lu, Qixing;Wang, Tao;Wu, Qian;Cheng, Lijing;Luo, Han;Liu, Lei;Chu, Guobiao;Wang, Lufeng;Li, Baosheng. And the article was included in Green Chemistry in 2022.HPLC of Formula: 638-02-8 The following contents are mentioned in the article:

The construction of a carbon-carbon bond is the most fundamental aspect of synthetic chem. In this study, authors developed a catalyst-free S_N2′ reaction of β-OTf-substituted enamides with aromatics to obtain aryl-substituted aza-1,4-dicarbonyl compounds that can be in situ transformed into aryl-imidazole, aryl-thiazole, and aryl-oxazole in one-pot operation, thus achieving C-H heteroarylation of aromatics This simple, efficient, clean and scalable strategy, which provides difficult-to-realize biaryl products, is compatible with various aromatics having varying complexities. This method can be used for the late-stage modification of various com. pharmaceuticals or functional materials and offers an orthogonal approach for constructing biaryl compounds This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8HPLC of Formula: 638-02-8).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.HPLC of Formula: 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Determination of individual sulfur-containing compounds in gas condensate and petrol by gas chromatography was written by Afanas’ev, I. P.;Gorshkova, T. A.;Arystanbekova, S. A.;Lapina, M. S.;Volynskii, A. B.. And the article was included in Journal of Analytical Chemistry in 2017.Synthetic Route of C6H8S The following contents are mentioned in the article:

A procedure is developed for the determination of more than 60 individual sulfur-containing compounds (SCC) in liquid hydrocarbon raw materials and in liquid fuels using gas chromatog. on a 25-m WCOT column, inner diameter 0.32 mm, with a nonpolar dimethylpolysiloxane stationary phase (layer thickness 5 μm) and chemiluminescence detection. SCC were identified by individual standard substances and published data. Quant. determination was carried out by the internal standard method. The results of determination of individual SCC in petrol and stable gas condensate are presented. The most high-boiling SCC found in significant amounts (more than 0.005 wt % of sulfur) were C₂-benzothiophenes (in petrol) and C₄-dibenzothiophenes (in gas condensate). This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Synthetic Route of C6H8S).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is a fused ring compound of thiophene ring and benzene ring, which is an important class of heterocycles with advantageous structures. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.Synthetic Route of C6H8S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Potassium Carbonate to Unlock a GaCl₃-Catalyzed C-H Propargylation of Arenes was written by Vayer, Marie;Rodrigues, Sophie;Miaskiewicz, Solene;Gatineau, David;Gimbert, Yves;Gandon, Vincent;Bour, Christophe. And the article was included in ACS Catalysis in 2022.Application of 638-02-8 The following contents are mentioned in the article:

A gallium-catalyzed C-H propargylation of electron-rich arenes using bromoallenes is described. The development of this reaction was first hampered by a side hydroarylation process catalyzed by adventitious protons, easily generated from the solvent (1,2-dichloroethane). This hidden Bronsted acid catalysis could be bypassed by using K₂CO₃ as insoluble base. The unexpected compatibility of this base with the Lewis acid catalyst GaCl₃ allowed a strictly gallium-catalyzed process that was thoroughly studied by kinetics, ⁷¹Ga NMR experiments and DFT computations. The GaCl₃/K₂CO₃ system triggers the C-H propargylation of a wide range of arenes and heteroaromatics using a variety of bromoallenes. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Application of 638-02-8).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Functionalized benzothiophenes are important constructs found in molecules with wide ranging biological activity and in organic materials. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, sertaconazole, and also BTCP.Application of 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Establishment of analysis method by sulfur type in condensate was written by Shiotani, Hideaki. And the article was included in Idemitsu Giho in 2018.Electric Literature of C6H8S The following contents are mentioned in the article:

There are various corrosion factors in petroleum refining plants, but the sulfurized compound contained in crude oil is also one of the factors, and it is known that it causes high-temperature sulfide corrosion. The corrosion rate of high-temperature sulfurized corrosion is predicted using the McConomy diagram, but in recent years, when processing a condensation containing a large amount of mercaptan, the corrosion rate exceeds the conventional corrosion rate. In order to elucidate the mechanism of this corrosion, it is required to understand the sulfur compounds in the condensation in detail. In this report, we examined a sulfur-yellow type anal. method that combines a silver nitrate treatment method and GC-SCD, and clarified that this anal. method can be applied to condensation. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Electric Literature of C6H8S).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is used as starting material for the synthesis of bioactive molecules. The core structure is a part of various pharmaceutical substances and natural products. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Electric Literature of C6H8S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem