Day: February 23, 2023

Influence of π-Endcaps on the Performance of Functionalized Quinolines for p-Channel OFETs was written by Anjali, Anshika;Imran, Predhanekar Mohamed;Bhuvanesh, Nattamai S. P.;Nagarajan, Samuthira. And the article was included in Macromolecular Rapid Communications in 2022.Recommanded Product: 2-Ethynylthiophene This article mentions the following:

This study investigates the influence of aryl and ethynyl linkers as well the effect of various pi-end-groups on the performance of the quinoline-based organic field-effect transistors. A series of new functionalized quinolines with D-π-A-π-D and A-π-A-π-A architectures are designed and synthesized via the Sonagashira cross-coupling reaction. All the new compounds are well characterized and their photophys. properties are studied. The bottom gate-top contact-organic field-effect transistors devices are fabricated using the spin-coating technique. By employing the pre and post-annealing technique, films with uniform surface coverage are obtained. The variation in the end-groups results in versatile packing arrangements which determine their good charge transport properties. The p-channel transistor behavior is observed for all the new compounds Among the mols. studied, methoxyphenyl and thiophen-2-yl terminal functionalized with D-π-A-π-D architecture exhibit the higher p-channel transistor characteristics with hole mobilities of 1.39 and 1.33 cm² V^-1 s^-1, resp. The good charge carrier mobilities are supported by an electron-donating methoxy group and thiophene as the end-groups with high highest occupied MOs (HOMO) and lowest unoccupied MOs (LUMO) levels, extensive π-conjugation, and better self-assembly. In the experiment, the researchers used many compounds, for example, 2-Ethynylthiophene (cas: 4298-52-6Recommanded Product: 2-Ethynylthiophene).

2-Ethynylthiophene (cas: 4298-52-6) 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 found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, and sertaconazole, and also BTCP.Recommanded Product: 2-Ethynylthiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Room-Temperature Gold-Catalysed Arylation of Heteroarenes: Complementarity to Palladium Catalysis was written by Cresswell, Alexander J.;Lloyd-Jones, Guy C.. And the article was included in Chemistry – A European Journal in 2016.Product Details of 1195-14-8 This article mentions the following:

Tailoring of the pre-catalyst, the oxidant and the arylsilane enables the first room-temperature, gold-catalyzed, innate C-H arylation of heteroarenes. Regioselectivity is consistently high and, in some cases, distinct from that reported with palladium catalysis. Tolerance to halides and boronic esters, in both the heteroarene and silane partners, provides orthogonality to Suzuki-Miyaura coupling. In the experiment, the researchers used many compounds, for example, 2-Methylbenzo[b]thiophene (cas: 1195-14-8Product Details of 1195-14-8).

2-Methylbenzo[b]thiophene (cas: 1195-14-8) belongs to benzothiophene derivatives. Functionalized benzothiophenes are important constructs found in molecules with wide ranging biological activity and in organic materials. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Product Details of 1195-14-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Evaluation of on-line pyrolysis two-dimensional gas chromatography time-of-flight mass spectrometry (Py-GC × GC-ToFMS) on whole sediments from a Mediterranean sapropel sequence was written by Payeur, Amy L.;Meyers, Philip A.;Sacks, Richard D.. And the article was included in Organic Geochemistry in 2011.Quality Control of 3-Ethylthiophene This article mentions the following:

Anal. of the mol. composition of the organic matter (OM) from whole sediment samples can avoid anal. bias that might result from isolation of components from the sediment matrix, but has its own anal. challenges. We evaluated the use of GC × GC-ToFMS to analyze the pyrolysis products of six whole sediment samples obtained from above, within and below a 1 million year old OM-rich Mediterranean sapropel layer. We found differences in pyrolysis products <n-C₂₂ between the OM-rich sapropel samples and the OM-poor background marls. The presence of alkyl pyrroles, probably derived from chlorophyll, in pyrolyzates of the sapropels but not in those of the marls suggests that higher marine productivity and greater OM preservation accompanied deposition of the sapropels. Detection of tetra-Me benzenes considered to be pyrolysis products of isorenieratene in the sapropel samples is evidence that nitrogen-fixing green sulfur bacteria contributed to the high productivity. Greater abundances of shorter chain aliphatic hydrocarbons, pyrroles, furans and alkyl aromatics in the pyrolyzates of sapropel samples relative to the marls confirm better preservation of marine OM in the sapropels. In addition, the presence of greater amounts of thiophenes in the sapropels than in the marls is consistent with the existence of euxinic conditions during sapropel deposition. The combination of whole sediment pyrolysis and GC × GC-ToFMS is promising, but the procedure requires careful selection of its multiple anal. variables, particularly the pyrolysis temperature and the operational features of the GC columns. In the experiment, the researchers used many compounds, for example, 3-Ethylthiophene (cas: 1795-01-3Quality Control of 3-Ethylthiophene).

3-Ethylthiophene (cas: 1795-01-3) belongs to benzothiophene derivatives. Benzothiophene finds use in research as a starting material for the synthesis of larger, usually bioactive structures. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Quality Control of 3-Ethylthiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Palladium-Catalyzed Tail-to-Tail Reductive Dimerization of Terminal Alkynes to 2,3-Dibranched Butadienes was written by Guo, Hongyu;Zhang, Sheng;Li, Yang;Yu, Xiaoqiang;Feng, Xiujuan;Yamamoto, Yoshinori;Bao, Ming. And the article was included in Angewandte Chemie, International Edition in 2022.Recommanded Product: 2-Ethynylthiophene This article mentions the following:

The palladium-catalyzed tail-to-tail reductive dimerization of terminal alkynes was described for the first time. Aromatic terminal alkynes bearing diverse and sensitive functional groups as well as aliphatic terminal alkynes are efficiently transformed to 2,3-dibranched butadienes H₂C(R)CC(R)CH₂ [R = Ph, 2-naphthyl, 2-thienyl, etc.]. The key to achieve a selective tail-to-tail reductive dimerization reaction is to control appropriately the acidity of the reaction solution, which is accomplished by a combined use of pivalic acid and para-toluenesulfonic acid. The tail-to-tail reductive dimerization reaction is proposed to proceed via a cationic alkenyl palladium intermediate under acidic conditions. In the experiment, the researchers used many compounds, for example, 2-Ethynylthiophene (cas: 4298-52-6Recommanded Product: 2-Ethynylthiophene).

2-Ethynylthiophene (cas: 4298-52-6) belongs to benzothiophene derivatives. Benzothiophene finds use in research as a starting material for the synthesis of larger, usually bioactive structures. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Recommanded Product: 2-Ethynylthiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Facile synthesis of pyrimidines via iminium catalyzed [4+2] reaction of α,β-unsaturated ketones with 1,3,5-triazines was written by Yang, Gongming;Chen, Lei;Wang, Jian;Jia, Qianfa;Wei, Jia;Du, Zhiyun. And the article was included in Tetrahedron Letters in 2015.Electric Literature of C13H10OS This article mentions the following:

[4+2] Cycloaddition of α,β-unsaturated ketones with 1,3,5-triazine via iminium catalysis has been developed. E.g., in presence of morpholine and K₂CO₃ in DMF, reaction of PhCH:CHCOMe with 1,3,5-triazine gave 79% pyrimidine derivative I. This method can prepare pyrimidines with high levels of regioselectivity and with good yields. In the experiment, the researchers used many compounds, for example, 3-Phenyl-1-(thiophen-2-yl)prop-2-en-1-one (cas: 3988-77-0Electric Literature of C13H10OS).

3-Phenyl-1-(thiophen-2-yl)prop-2-en-1-one (cas: 3988-77-0) belongs to benzothiophene derivatives. Functionalized benzothiophenes are important constructs found in molecules with wide ranging biological activity and in organic materials. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.Electric Literature of C13H10OS

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Enantioselective Trost alkynylation with 2E,4E-5-bromo-2,4-pentadienal was written by Ervik, Karina;Vidar Hansen, Trond. And the article was included in Tetrahedron Letters in 2022.SDS of cas: 67237-53-0 This article mentions the following:

The synthetically useful aldehyde 2E,4E-5-bromo-2,4-pentadienal were subjected to the enantioselective Trost alkynylation protocol, yielding highly functionalized propargylic secondary alcs. in an enantioselective manner. In most cases, the isolated yields and enantiomeric excess of the products were modest to high, but several products were formed in both high yields and enantiomeric excess. In the experiment, the researchers used many compounds, for example, 3-Ethynylthiophene (cas: 67237-53-0SDS of cas: 67237-53-0).

3-Ethynylthiophene (cas: 67237-53-0) 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. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.SDS of cas: 67237-53-0

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Nitrogen-doped mesoporous carbon single crystal-based Ag nanoparticles for boosting mild CO₂ conversion with terminal alkynes was written by Zhang, Zhongzheng;Shi, Jialin;Zhu, Tianyang;Zhang, Lina;Wei, Wei. And the article was included in Journal of Colloid and Interface Science in 2022.SDS of cas: 67237-53-0 This article mentions the following:

Fabrication of efficient heterogeneous catalysts with high turnover frequency (TOF) is intriguing for rapid and scalable CO₂ conversion under mild conditions, but it still faces some challenges due to use of some bulky and irregular supports causing inaccessible inner pores and insufficient utilization of active sites. Herein, using a unique nitrogen-doped mesoporous single-crystal carbon (named IRFC) as a host for loading Ag nanoparticles for the first time, a series of Ag/IRFC catalysts with high TOF (8.7-22.3 h-1) were facilely prepared by a novel “impregnation and in-situ reduction” strategy. The neat morphol. and high porosity of IRFC with abundant N species, providing homogeneous surface, adequate space and anchoring sites for Ag immobilization, greatly facilitated the formation of highly-distributed ultrasmall Ag nanoparticles (2.3 nm). Meanwhile, smooth and short diffusion pathways were inherited from the ordered mesopores and small particle sizes of IRFC. Owing to these unparalleled structural features, the Ag/IRFC catalysts exhibited excellent catalytic activity, stability, and generality for mild CO₂ conversion even under diluted conditions. This work not only presents a novel catalyst for mild CO2 conversion, but also brings some inspirations to designing highly efficient catalysts using well-shaped supporting nanomaterials for direct utilization of low-concentration _CO2, such as flue gas. In the experiment, the researchers used many compounds, for example, 3-Ethynylthiophene (cas: 67237-53-0SDS of cas: 67237-53-0).

3-Ethynylthiophene (cas: 67237-53-0) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.SDS of cas: 67237-53-0

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Multidimensional gas chromatography in combination with accurate mass, tandem mass spectrometry, and element-specific detection for identification of sulfur compounds in tobacco smoke was written by Ochiai, Nobuo;Mitsui, Kazuhisa;Sasamoto, Kikuo;Yoshimura, Yuta;David, Frank;Sandra, Pat. And the article was included in Journal of Chromatography A in 2014.Recommanded Product: 1795-01-3 This article mentions the following:

A method is developed for identification of sulfur compounds in tobacco smoke extract The method is based on large volume injection (LVI) of 10 μL of tobacco smoke extract followed by selectable one-dimensional (¹D) or two-dimensional (²D) gas chromatog. (GC) coupled to a hybrid quadrupole time-of-flight mass spectrometer (Q-TOF-MS) using electron ionization (EI) and pos. chem. ionization (PCI), with parallel sulfur chemiluminescence detection (SCD). In order to identify each individual sulfur compound, sequential heart-cuts of 28 sulfur fractions from ¹D GC to ²D GC were performed with the three MS detection modes (SCD/EI-TOF-MS, SCD/PCI-TOF-MS, and SCD/PCI-Q-TOF-MS). Thirty sulfur compounds were pos. identified by MS library search, linear retention indexes (LRI), mol. mass determination using PCI accurate mass spectra, formula calculation using EI and PCI accurate mass spectra, and structure elucidation using collision activated dissociation (CAD) of the protonated mol. Addnl., 11 mol. formulas were obtained for unknown sulfur compounds The determined values of the identified and unknown sulfur compounds were in the range of 10-740 ng mg total particulate matter (TPM) (RSD: 1.2-12%, n = 3). In the experiment, the researchers used many compounds, for example, 3-Ethylthiophene (cas: 1795-01-3Recommanded Product: 1795-01-3).

3-Ethylthiophene (cas: 1795-01-3) belongs to benzothiophene derivatives. Functionalized benzothiophenes are important constructs found in molecules with wide ranging biological activity and in organic materials. Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.Recommanded Product: 1795-01-3

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Chemoselective Hydrosilylation of the α,β-Site Double Bond in α,β- and α,β,γ,δ-Unsaturated Ketones Catalyzed by Macrosteric Borane Promoted by Hexafluoro-2-propanol was written by Zhan, Xiao-Yu;Zhang, Hua;Dong, Yu;Yang, Jian;He, Shuai;Shi, Zhi-Chuan;Tang, Lei;Wang, Ji-Yu. And the article was included in Journal of Organic Chemistry in 2020.Recommanded Product: 3988-77-0 This article mentions the following:

The B(C₆F₅)₃-catalyzed chemoselective hydrosilylation of α,β- and α,β,γ,δ-unsaturated ketones into the corresponding asym. ketones in mild reaction conditions is developed. Nearly 50 substrates including those bearing reducible functional groups such as alkynyl, alkenyl, cyano, and aromatic heterocycles are chemoselectively hydrosilylation in good to excellent yields. Isotope-labeling studies revealed that HFIP also served as hydrogen source in the process. In the experiment, the researchers used many compounds, for example, 3-Phenyl-1-(thiophen-2-yl)prop-2-en-1-one (cas: 3988-77-0Recommanded Product: 3988-77-0).

3-Phenyl-1-(thiophen-2-yl)prop-2-en-1-one (cas: 3988-77-0) 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.Recommanded Product: 3988-77-0

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

BBOT for applications in photovoltaic cells devices and organic diodes was written by Lewinska, G.;Puszynski, A.;Sanetra, J.. And the article was included in Synthetic Metals in 2015.Formula: C26H26N2O2S This article mentions the following:

In this work photovoltaic devices based on C. I. Fluorescent Brightener 184 preparing and features was presented. The brightener was a major component of the active layers of devices, in which was used the selected matrix. The study included are the results for the performed light emitting diodes based on architecture ITO/PEDOT: PSS/organic active layer/calcium/aluminum, we set the characteristics of the diodes. The main aim of the study was the use of BBOT for the construction of photovoltaic cells. We have made a number of devices bulk-heterojunction type cells based on architecture ITO/PEDOT:PSS/organic active layer/aluminum in various configurations concentrations and with different thicknesses of the active layers. We have analyzed the current-voltage characteristics of photovoltaic cells and determined parameters of photovoltaic cells. In the experiment, the researchers used many compounds, for example, 2,5-Bis(5-(tert-butyl)benzo[d]oxazol-2-yl)thiophene (cas: 7128-64-5Formula: C26H26N2O2S).

2,5-Bis(5-(tert-butyl)benzo[d]oxazol-2-yl)thiophene (cas: 7128-64-5) 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 found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, and sertaconazole, and also BTCP.Formula: C26H26N2O2S

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem