57382-97-5

Usage

Uses

Used in Organic Photovoltaic Devices:
Ethyl 2-thiopheneacetate is used as a chemical precursor for the preparation of S-(2-(5-((amidinothio)methyl)-2-thienyl)ethyl)isothioureapyrrolo[3,2-b]pyrrole-based copolymers. These copolymers are essential components in the development of organic photovoltaic devices due to their ability to enhance the efficiency and performance of these devices by improving the charge transport and light absorption properties.

InChI:InChI=1/C8H10O2S/c1-2-10-8(9)6-7-4-3-5-11-7/h3-5H,2,6H2,1H3

Upstream product

• 6165-68-0 thiophene boronic acid 
• 105-36-2 ethyl bromoacetate 
• 1003-09-4 2-bromothiophene 
• 6148-64-7 ethyl potassium malonate 
• 1918-77-0 Thiophene-2-acetic acid 
• 75-03-6 ethyl iodide 
• 188290-36-0 thiophene 
• 623-50-7 ethyl 2-hydroxyacetate 
• 88798-28-1 diethyl 2-(thiophenyl)propane-1,3-dioate 
• 64-17-5 ethanol 
• 765-50-4 2-Chloromethylthiophene 
• 64769-72-8 ethyl α-methylthio-2-thiopheneacetate 
• 623-48-3 ethyl iodoacetae 
• 186581-53-3 diazomethane 

Downstream Products

• 57050-62-1 Di-p-tolylimino-oxalsaeurediethylester 
• 167984-83-0 1-[2]thienyl-cyclohexanecarboxylic acid ethyl ester 
• 162959-94-6 1-(thien-2-yl)cyclopropanecarboxylic acid 
• 1268444-69-4 (4R)-4-[(2-chlorophenyl)sulfonyl]-N-(1-cyanocyclopropyl)-1-{[1-(thien-2-yl)cyclopropyl]carbonyl}-L-prolinamide 
• 1268445-11-9 (4R)-4-{[2-chloro-4-(2,2,2-trifluoroethoxy)phenyl]sulfonyl}-N-(1-cyanocyclopropyl)-1-{[1-(thien-2-yl)cyclopropyl]carbonyl}-L-prolinamide 
• 950604-72-5 C₁₀H₁₂O₂S 
• 1427475-48-6 C₄₂H₄₈N₂O₄S₂ 
• 1529779-98-3 ethyl 2-(4-phenylthiophen-2-yl)acetate 
• 39098-97-0 2-thienylacetic acid chloride 

Relevant academic research and scientific papers

4-Alkyl-1,2,4-triazole-3-thione analogues as metallo-β-lactamase inhibitors

In Gram-negative bacteria, the major mechanism of resistance to β-lactam antibiotics is the production of one or several β-lactamases (BLs), including the highly worrying carbapenemases. Whereas inhibitors of these enzymes were recently marketed, they only target serine-carbapenemases (e.g. KPC-type), and no clinically useful inhibitor is available yet to neutralize the class of metallo-β-lactamases (MBLs). We are developing compounds based on the 1,2,4-triazole-3-thione scaffold, which binds to the di-zinc catalytic site of MBLs in an original fashion, and we previously reported its promising potential to yield broad-spectrum inhibitors. However, up to now only moderate antibiotic potentiation could be observed in microbiological assays and further exploration was needed to improve outer membrane penetration. Here, we synthesized and characterized a series of compounds possessing a diversely functionalized alkyl chain at the 4-position of the heterocycle. We found that the presence of a carboxylic group at the extremity of an alkyl chain yielded potent inhibitors of VIM-type enzymes with Ki values in the μM to sub-μM range, and that this alkyl chain had to be longer or equal to a propyl chain. This result confirmed the importance of a carboxylic function on the 4-substituent of 1,2,4-triazole-3-thione heterocycle. As observed in previous series, active compounds also preferentially contained phenyl, 2-hydroxy-5-methoxyphenyl, naphth-2-yl or m-biphenyl at position 5. However, none efficiently inhibited NDM-1 or IMP-1. Microbiological study on VIM-2-producing E. coli strains and on VIM-1/VIM-4-producing multidrug-resistant K. pneumoniae clinical isolates gave promising results, suggesting that the 1,2,4-triazole-3-thione scaffold worth continuing exploration to further improve penetration. Finally, docking experiments were performed to study the binding mode of alkanoic analogues in the active site of VIM-2.

A novel method for the synthesis of 1,2,4-triazole-derived heterocyclic compounds: enzyme inhibition and molecular docking studies

Two series of new N-aryl/aralkyl derivatives (9a–q) of 2-(4-ethyl-5-(thiophen-2-ylmethyl)-4H-1,2,4-triazol-3-ylthio)acetamide and N-aryl/aralkyl derivatives (10a–q) of 2-(4-phenyl-5-(thiophen-2-ylmethyl)-4H-1,2,4-triazol-3-ylthio)acetamide were synthesized. The methods included successive conversions of thiophen-2-acetic acid (a) into its respective ester, hydrazide and N-aryl/aralkyl 1,3,4-triazole. The target compounds (9a–q; 10a–q) were obtained by the reaction of N-aryl/aralkyl 1,3,4-triazole (5, 6) with various electrophiles, (8a–q), in N,N-dimethyl formamide (DMF) and sodium hydroxide at room temperature. The characterization of these compounds was done by FTIR, 1H-, 13C-NMR, EI-MS and HR-EI-MS spectral data. All compounds were evaluated for their enzyme inhibitory potentials against electric eel acetylcholinesterase, AChE (10f, 10d; IC50 values 32.26 ± 0.12, 45.72 ± 0.11?μM, respectively), equine butyrylcholinesterase, BChE (9d, 9l, 9b, 10d, 10h; IC50 values 12.52 ± 0.19, 12.52 ± 0.19, 21.72 ± 0.18, 23.62 ± 0.22, 24.52 ± 0.21?μM, respectively), jack bean urease (10i, 10n, 9e; IC50 values 7.27 ± 0.05, 7.35 ± 0.04, 8.79 ± 0.05?μM, respectively) and yeast α-glucosidase enzymes (9o, 10i; IC50 values 62.94 ± 0.19, and 69.46 ± 0.15?μM, respectively). The molecular docking studies supported these findings. This study provides cheaper bioactive triazole amides as promising future lead molecules.

Opioid receptor agonists and application thereof

The invention discloses compounds and salts thereof that can be used as opioid receptor ligands, a preparation method of the compounds, compositions containing the compounds, and a use of the compounds as [mu] opioid receptor agonists; the compounds are used for treatment of [mu] opioid receptor-mediated related diseases, such as pains and pain-related disorders.

Compounding method for 2-thiopheneacetyl chloride

The invention discloses a compounding method for 2-thiopheneacetyl chloride and belongs to the technical field of organic synthesis. The 2-thiopheneacetyl chloride is compounded by taking thiophene asa raw material through following three-step reaction: 1) acquiring 2-thiophene acetate through the F-C reaction of thiophene and glycolate under the existence of catalyst; 2) hydrolyzing the 2-thiophene acetate under the existence of acid, thereby acquiring 2-thiopheneacetic acid; 3) treating the 2-thiopheneacetic acid in the manner of acylating chlorination with thionyl chloride under the catalysis of pyridine, thereby acquiring 2-thiopheneacetyl chloride. The compounding method for 2-thiopheneacetyl chloride has the characteristics of easily acquired raw materials and simple and convenientoperation and is suitable for industrial production.

Structure-Odor Correlations in Homologous Series of Mercapto Furans and Mercapto Thiophenes Synthesized by Changing the Structural Motifs of the Key Coffee Odorant Furan-2-ylmethanethiol

Furan-2-ylmethanethiol (2-furfurylthiol; 2-FFT, 1) is long-known as a key odorant in roast and ground coffee and was also previously identified in a wide range of thermally treated foods such as meat, bread, and roasted sesame seeds. Its unique coffee-like odor quality elicited at very low concentrations, and the fact that only a very few compounds showing a similar structure have previously been described in foods make 1 a suitable candidate for structure-odor activity studies. To gain insight into the structural features needed to evoke a coffee-like odor at low concentrations, 46 heterocyclic mercaptans and thio ethers were synthesized, 32 of them for the first time, and their odor qualities and odor thresholds were determined. A movement of the mercapto group to the 3-position kept the coffee-like aroma but led to an increase in odor threshold. A separation of the thiol group from the furan ring by an elongation of the carbon side chain caused a loss of the coffee-like odor and also led to an increase in odor thresholds, especially for ω-(furan-2-yl)alkane-1-thiols with six or seven carbon atoms in the side chain. A displacement of the furan ring by a thiophene ring had no significant influence on the odor properties of most of the compounds studied, but the newly synthesized longer-chain 1-(furan-2-yl)- and 1-(thiophene-2-yl)alkane-1-thiols elicited interesting passion fruit-like scents. In total, only 4 out of the 46 compounds also showed a coffee-like odor quality like 1, but none showed a lower odor threshold. Besides the odor attributes, also retention indices, mass spectra, and NMR data of the synthesized compounds were elaborated, which are helpful in possible future identification of these compounds in trace levels in foods or other materials.

A novel serine racemase inhibitor suppresses neuronal over-activation in vivo

Serine racemase (SRR) is an enzyme that produces D-serine from L-serine. D-Serine acts as an endogenous coagonist of NMDA-type glutamate receptors (NMDARs), which regulate many physiological functions. Over-activation of NMDARs induces excitotoxicity, which is observed in many neurodegenerative disorders and epilepsy states. In our previous works on the generation of SRR gene knockout (Srr-KO) mice and its protective effects against NMDA- and Aβ peptide-induced neurodegeneration, we hypothesized that the regulation of NMDARs’ over-activation by inhibition of SRR activity is one such therapeutic strategy to combat these disease states. In the previous study, we performed in silico screening to identify four compounds with inhibitory activities against recombinant SRR. Here, we synthesized 21 derivatives of candidate 1, one of four hit compounds, and performed screening by in vitro evaluations. The derivative 13J showed a significantly lower IC50 value in vitro, and suppressed neuronal over-activation in vivo.

Synthesis method of 2-thiopheneacetic acid

The invention provides a synthesis method of 2-thiopheneacetic acid. The synthesis method comprises the following steps: by taking thiophene as a raw material, chloridizing, iodizing, condensing with diethyl malonate, and finally hydrolyzing and heating for decarboxylation, so that 2-thiopheneacetic acid is obtained. The synthesis method provided by the invention is simple to operate, reaction process can be easily controlled, a highly toxic reagent does not need to be used, safety coefficient is high, the adopted raw material is cheap and easily available, pollution is low, requirement on production equipment is low, production cost is low, produced 2-thiopheneacetic acid is white solid powder, purity is more than or equal to 99.0%, product quality is good, and yield is high, so that the synthesis method is applicable to industrial production.

SERINE RACEMASE INHIBITOR

A novel serine racemase inhibitor exhibits sufficient activity and specificity. The serine racemase inhibitor includes one or more compounds selected from compounds respectively represented by the following general formulas [MM_1], [DR_1], [DR'_1], [LW_1], and [ED_1] as an active ingredient.

Pd-catalyzed decarboxylative cross-couplings of potassium malonate monoesters with aryl halides

An efficient catalytic protocol for Pd-catalyzed decarboxylative cross-coupling of potassium malonate monoesters and derivatives with aryl bromides and chlorides are described. Because of its broad applicability, this new catalytic system provides an alternative method for the preparation of diverse aryl acetic acids and derivatives.

Novel aromatic compounds and their use in medical applications

Pharmaceutical compositions comprising at least one compound of the formulas (Ia) or (Ib) and a pharmaceutically acceptable carrier which is useful in a medicine wherein the symbols and substituents have the following meaning -X- is e.g. or or or and Y being or or the pharmaceutically acceptable salts, esters or amides and prodrugs of the above identified compounds of formulas (Ia) or (Ib). The compounds are applied to modulate the in-vitro and in-vivo binding processes mediated by E-, P- or L-selectin binding.