Category: 638-02-8

Pd-Catalyzed β-Selective C-H Arylation of Thiophenes with Triarylantimony Difluorides was written by Kitamura, Yuki;Murata, Yuki;Oguri, Ayaka;Matsumura, Mio;Kakusawa, Naoki;Naka, Hiroshi;Yasuike, Shuji. And the article was included in Asian Journal of Organic Chemistry in 2019.COA of Formula: C6H8S The following contents are mentioned in the article:

Regioselective C-H arylation using pentavalent organoantimony compounds (Ar)₃SbX₂ (Ar = 4-fluorophenyl, 2-methylphenyl, 4-methoxyphenyl, etc.; X = H, F, Cl, OAc) as a new class of arylating reagents is described. The reaction of thiophenes I (R = H, Me, Ph, n-Bu, Cl; RR¹ = CH=CH-CH=CH; R¹ = H, Me, Ph, Cl, n-Bu ; R² = H, Me) with triarylantimony difluorides in the presence of 5 mol% of Pd(OAc)₂ and 2 equivalent CuCl₂ at 80 °C under aerobic conditions afforded the β-arylated thiophene derivatives, II in moderate-to-high yields. The reaction is sensitive to the electronic nature of the triarylantimony difluorides – those bearing an electron-donating group on the Ph ring showed higher reactivity than those have an electron-withdrawing group. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8COA of Formula: 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. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, and sertaconazole, and also BTCP.COA of Formula: C6H8S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Photoswitching of Local (Anti)Aromaticity in Biphenylene-Based Diarylethene Molecular Switches was written by Kalapos, Peter Pal;Mayer, Peter J.;Gazdag, Tamas;Demeter, Attila;Oruganti, Baswanth;Durbeej, Bo;London, Gabor. And the article was included in Journal of Organic Chemistry in 2022.Related Products of 638-02-8 The following contents are mentioned in the article:

Photoinduced tuning of (anti)aromaticity and associated mol. properties is currently in the focus of attention for both tailoring photochem. reactivity and designing new materials. Here, we report on the synthesis and spectroscopic characterization of diarylethene-based mol. switches embedded in a biphenylene structure composed of rings with different levels of local (anti)aromaticity. We show that it is possible to modulate and control the (anti)aromatic character of each ring through reversible photoswitching of the aryl units of the system between open and closed forms. Remarkably, it is shown that the irreversible formation of an annulated bis(dihydro-thiopyran) side-product that hampers the photoswitching can be efficiently suppressed when the aryl core formed by thienyl groups in one switch is replaced by thiazolyl groups in another. 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 relatively a stable molecule. The core structure is a part of various pharmaceutical substances and natural products. 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.Related Products of 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Halogen-Bonding-Induced Conjugate Addition of Thiophenes to Enones and Enals was written by Ge, Yi-Cen;Yang, Hui;Heusler, Arne;Chua, Zhijie;Wong, Ming Wah;Tan, Choon-Hong. And the article was included in Chemistry – An Asian Journal in 2019.Category: benzothiophene The following contents are mentioned in the article:

The conjugate addition of αβ-unsaturated carbonyl compounds RCH=C(R¹)C(O)R² (R = H, Ph; R¹ = H, Br, Me, CO₂Et; R² = H, Et, Ph; RR² = -(CH₂)₃-, R¹ = H) to thiophene derivatives I (R³ = H, Me, Ph; R⁴ = H, Me; R⁵ = H, Me; R⁶ = H, Me, Br; R³R⁴ = CH:CH-CH:CH) has been reported. 2-Iodoimidazolinium triflate salt has been used as a halogen-bonding donor, which afforded moderate-to-excellent yields of the corresponding alkylated thiophenes, e.g., II. Insight into the catalytic process was obtained from ¹H NMR spectroscopy studies and DFT calculations, which indicated a halogen-bonding-supported mechanism with limited Bronsted acid catalysis. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Category: benzothiophene).

2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The core structure is a part of various pharmaceutical substances and natural products. It is also used in the manufacturing of dyes such as thioindigo.Category: benzothiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Identification of thiophenes in S-zorb gasoline by GC/Q-TOF MS was written by Ren, Xujin;Huang, Shaokai;Hu, Miao;Wu, Qing. And the article was included in Fenxi Shiyanshi in 2021.Category: benzothiophene The following contents are mentioned in the article:

Combined with gas chromatog. separation and tandem mass spectrometry screening technol., the target parent ions were selected for collision induced dissociation to obtain accurate ion fragments, which achieved trace screening of the thiophene compounds in gasoline fractions. Quant. standard curves were drawn according to five characteristic thiophene compounds and the direct anal. method of thiophenes (TPs) in S-zorb gasoline by GC/Q-TOF MS was established. The method was utilized to identify the TPs and the removal rule of them in S-zorb gasoline. The results showed that thiophene with Me on 2-position was more difficult to be removed than the one with Me on 3-position. The 2-, 5-two Me substituent groups and thiophenes with Me substituent groups on 2-, 3-, 5-position are the main remaining thiophene compounds of C2-TPs and C3-Tps. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Category: benzothiophene).

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 also used in the manufacturing of dyes such as thioindigo.Category: benzothiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

The torsional barriers of two equivalent methyl internal rotations in 2,5-dimethylfuran investigated by microwave spectroscopy was written by Van, Vinh;Bruckhuisen, Jonas;Stahl, Wolfgang;Ilyushin, Vadim;Nguyen, Ha Vinh Lam. And the article was included in Journal of Molecular Spectroscopy in 2018.Related Products of 638-02-8 The following contents are mentioned in the article:

The microwave spectrum of 2,5-dimethylfuran was recorded using two pulsed mol. jet Fourier transform microwave spectrometers which cover the frequency range from 2 to 40 GHz. The internal rotations of two equivalent Me tops with a barrier height of approx. 439.15 cm^-1 introduce torsional splittings of all rotational transitions in the spectrum. For the spectral anal., two different computer programs were applied and compared, the PAM-C_2v-2tops code based on the principal axis method which treats several torsional states simultaneously, and the XIAM code based on the combined axis method, yielding accurate mol. parameters. The exptl. work was supplemented by quantum chem. calculations Two-dimensional potential energy surfaces depending on the torsional angles of both Me groups were calculated and parametrized. 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 also used in the manufacturing of dyes such as thioindigo.Related Products of 638-02-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Hydroarylation of enamides enabled by HFIP via a hexafluoroisopropyl ether as iminium reservoir was written by Zeidan, Nicolas;Bicic, Sergiu;Mayer, Robert J.;Leboeuf, David;Moran, Joseph. And the article was included in Chemical Science in 2022.Electric Literature of C6H8S The following contents are mentioned in the article:

HFIP greatly expands the scope with respect to both reaction partners of the Bronsted acid-catalyzed hydroarylation of enamides was described. The reaction was fast and practical and performed on the gram scale. A hexafluoroisopropyl ether intermediate was isolated from the reaction mixture and was shown to convert to the product when resubmitted to the reaction conditions. Extensive kinetic studies and computations reveal that the hexafluoroisopropyl ether was formed rapidly and serves as a slow-release reservoir for the key cationic intermediate, preventing the oligomerization of the substrate under the reaction conditions. Given the relatively low electrophilicity of the cationic intermediates in the present study, it seems likely that HFIP also actively participates in other reactions involving more electrophilic carbocations. 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 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.Electric Literature of C6H8S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Effects of sugars on the flavor and antioxidant properties of the Maillard reaction products of camellia seed meals was written by Ni, Zhi-Jing;Liu, Xiang;Xia, Bing;Hu, Long-Teng;Thakur, Kiran;Wei, Zhao-Jun. And the article was included in Food Chemistry: X in 2021.Category: benzothiophene The following contents are mentioned in the article:

In the present study, camellia seed meal Maillard reaction products (MRPs) were prepared using camellia seed meal protein as a raw material. The effects of MR on protein structure and volatile components of camellia seed meal were investigated by fluorescence, UV absorption, IR spectroscopy, and gas chromatog.-mass spectrometry. Not only the change of amino acid content in MRPs, but also the antioxidant capacity of MRPs and the antioxidant capacity after in vitro digestion were determined Our result showed that the ratio of essential amino acids in R-MRPs was increased and the antioxidant activity was the highest. For the potential of MRPs as flavoring, our sensory evaluation results showed improved flavor and antioxidant activity of camellia seed meal after MR which can be used as flavoring agents at industrial level. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Category: benzothiophene).

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.Category: benzothiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Reversed photochromism reactivity of malononitrile attached bisthienylthene was written by Li, Xiaochuan;Han, Yujie;Kim, Myeong Jin;Son, Young-A.. And the article was included in Molecular Crystals and Liquid Crystals in 2018.Category: benzothiophene The following contents are mentioned in the article:

An electron acceptor, malononitrile, was attached to bisthienylethene derivative The significant influence of electron nature result a reversed phtochromism. Investigation of MT in THF demonstrates the reversible ring-open and ring-close. Upon irradiation of 405 nm laser, the solution color changed from yellowish to colorless, which is different from most of the photochromic colored phenomenon. Upon 254 nm irradiation, the original yellowish state can be recovered. Due to the attachment of malononitrile, the photo-/thermal-stability were enhanced. The ring-open/ring-closed forms were optimized by Dmol³. The distance between photocyclizing atoms in aptiparallel conformation meets the requirement for photochromic reaction. And the calculated absorption values were also in agreement with the exptl. ones. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Category: benzothiophene).

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. 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.Category: benzothiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

An “electron lock” toward the photochromic activity of phenylacetylene appended bisthienylethene was written by Li, Xiaochuan;Cai, Qiongyan;Zhang, Junna;Kim, Hyorim;Son, Young-A.. And the article was included in Molecular Crystals and Liquid Crystals in 2020.Name: 2,5-Dimethylthiophene The following contents are mentioned in the article:

Photochromic core structure of BTEs was configured in the design of (2,3-Bis(2,5-dimethylthiophen)-5-phenylethynylthiophene) and (2,3-Bis(2,5-dimethylthiophen)-5-(4-methoxyphenyl)-1,3-butadiene-1,1,4,4-tetracarbonitrile). exhibits regular photochromic behavior in hexane when excited with UV (254 nm) and visible light (>400 nm). The solution can be cycled between pink colors and colorless. Correspondingly, with a more electron-withdrawing group attached, the photochromic reactivity was totally quenched. It is the lowered electron d. on reactive carbon atoms in LUMO that influence the photochromism, which is one of the key elements to photochromism. Apart from the distance between reactive atoms, electron distribution on reactive atoms is another important key to the configuration of photochromic dyes. 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. 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.Name: 2,5-Dimethylthiophene

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