Category: 638-02-8

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

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

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

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

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

The Photostability of Two Optical Materials Based on Perylene Diimide Substituted by Different Aromatic Groups at the Bay Area was written by He, Junjie;Li, Song;Zeng, Heping. And the article was included in Journal of Heterocyclic Chemistry in 2017.SDS of cas: 638-02-8 The following contents are mentioned in the article:

The perylene diimide substituted by thiophene rings at bay area shows photoactivity and can be used as a photo sensor, but another 1 substituted by mesitylene groups is photostable. The single crystal of 1,7-mesitylene perylenediimide was obtained. X-ray diffraction data of the crystal revealed that the plane of the perylene core was hardly twisted by introduction of mesitylene groups. These mesitylene groups are like clips maintaining the planarity of the perylene core. D. functional theory calculation was applied to study the difference of photophys. and photochem. properties. The discovery is valuable for design guidance of perylenediimides. Crystallog. data are given. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8SDS of cas: 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 zileuton, raloxifene, and sertaconazole, and also BTCP.SDS of cas: 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Catalytic, Interrupted Formal Homo-Nazarov Cyclization with (Hetero)arenes: Access to α-(Hetero)aryl Cyclohexanones was written by Williams, Corey W.;Shenje, Raynold;France, Stefan. And the article was included in Journal of Organic Chemistry in 2016.Quality Control of 2,5-Dimethylthiophene The following contents are mentioned in the article:

The first examples of a Lewis-acid catalyzed (hetero)arene interrupted, formal homo-Nazarov cyclization have been disclosed. Using SnCl₄ as the catalyst, alkenyl cyclopropyl ketones undergo ring-opening cyclization to form six-membered cyclic oxyallyl cations. Subsequent intermol. Friedel-Crafts-type arylation with various electron-rich arenes and heteroarenes provides functionalized α-(hetero)arylated cyclohexanones, a scaffold present in many natural products and bioactive compounds, in yields up to 88% and diastereomeric ratios up to 12:1. Regiospecific arylation occurs at the α-carbon of the oxyallyl cation due to polarization caused by the ester group. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Quality Control of 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. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, sertaconazole, and also BTCP.Quality Control of 2,5-Dimethylthiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Superelectrophilic-Initiated C-H Functionalization at the β-Position of Thiophenes: A One-Pot Synthesis of trans-Stereospecific Saddle-Shaped Cyclic Compounds was written by Wei, Ying;Zheng, Xiangping;Lin, Dongqing;Yuan, Haoxuan;Yin, Zhipeng;Yang, Lei;Yu, Yang;Wang, Shasha;Xie, Ling-Hai;Huang, Wei. And the article was included in Journal of Organic Chemistry in 2019.Name: 2,5-Dimethylthiophene The following contents are mentioned in the article:

Superelectrophilic-initiated direct C-H functionalization of thiophenes at the β-position was developed. A series of trans-stereospecific [2,1-a]-IF-thiophene-fused cyclic compounds (4) with saddle-shaped structure were prepared in 17-30% yields through a one-pot superelectrophilic Friedel-Crafts reaction of dihydroindenofluorene with thiophene derivatives From the crystal packing analyses of 4a, its skeleton shows both strong intermol. π-π stacking and C-H···π stacking. Furthermore, the ring-dependent photophys. properties were confirmed by UV-vis absorption and photoluminescence spectroscopy as well as through the study of their fluorescence quantum yield. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Name: 2,5-Dimethylthiophene).

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. Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.Name: 2,5-Dimethylthiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Direct C-H Arylation of Heteroarenes with Copper Impregnated on Magnetite as a Reusable Catalyst: Evidence for CuO Nanoparticle Catalysis in Solution was written by Vasquez-Cespedes, Suhelen;Chepiga, Kathryn M.;Moeller, Nadja;Schaefer, Andreas H.;Glorius, Frank. And the article was included in ACS Catalysis in 2016.Safety of 2,5-Dimethylthiophene The following contents are mentioned in the article:

A reusable copper-based catalyst system was employed for the direct arylation of electron-rich heteroarenes. Under mild and operationally simple reaction conditions good yields and selectivities were obtained using diaryliodonium salts as coupling partners. A combination of exptl. methods including kinetic studies, filtration tests, and a series of anal. tools (TXRF, ICP-MS, SEM, XPS, TEM, EFTEM) provide evidence for catalytically active soluble nanoparticles formed from an amorphous heterogeneous precursor. Mechanistic studies hint at a redox-neutral process which promotes counterion dissociation from the diaryliodonium salt by a copper(II) oxide species. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Safety of 2,5-Dimethylthiophene).

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. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Safety of 2,5-Dimethylthiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Photo- and ionochromic thienyl(coumarinyl)thiazoles was written by Shepelenko, Evgenii N.;Podshibyakin, Vitaly A.;Tikhomirova, Karina S.;Revinskii, Yurii V.;Dubonosov, Alexander D.;Bren, Vladimir A.;Minkin, Vladimir I.. And the article was included in Journal of Molecular Structure in 2018.Name: 2,5-Dimethylthiophene The following contents are mentioned in the article:

Thienyl (6-methoxycoumarinyl)thiazoles containing various amino groups in bridging fragment were synthesized. In the ring-opened form, the dihetarylethenes display fluorescence with quantum yields of 0.012-0.015. Irradiation of their solutions with light of 365 or 436 nm results in the formation of non-fluorescent ring-closed isomers. Re-opening of the cyclohexadiene ring occurs under exposure to visible light (λ > 500 nm). The prepared compounds represent bifunctional chemosensors – “naked-eye” chromogenic for F^– anions (change of the solution color from yellow to brown-red) and fluorogenic for Hg²⁺ cations (with CHEQ effect). This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Name: 2,5-Dimethylthiophene).

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 is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Name: 2,5-Dimethylthiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem