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Journal articles on the topic 'Methyl-thiophene'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Bar, Sukanta. "Regioselective Synthesis of 5-Propyl-2-((trityloxy)methyl)thiophene-3-carbaldehyde." Molbank 2021, no. 4 (2021): M1289. http://dx.doi.org/10.3390/m1289.

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5-propyl-2-((trityloxy)methyl)thiophene-3-carbaldehyde was synthesized by using the concept of chemo- and regioselective Br/Li exchange reaction from 3-bromo-5-propyl-2-((trityloxy)methyl)thiophene. This is a five-step protocol starting from thiophene with an overall yield of 33%. These lithium/halogen exchange reactions were carried out at −78 °C to rt over the period of 1 to 18 h depending on the reactivity of electrophiles.

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2

Mahyavanshi, Jyotindra, Snehal Lokhandwala, Jayesh Pandya, and Jigar Patel. "Synthesis, Structural Determination, Docking Study and Bioactivity of Novel Thiophene Derivatives." Asian Journal of Chemistry 36, no. 6 (2024): 1321–26. http://dx.doi.org/10.14233/ajchem.2024.31509.

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The present study reveals 4-methyl-3-(propylamino)thiophene-2-carboxylic acid (Articaine acid) as precursor derivative to synthesize novel thiophene compounds to evaluate their biological activity. The synthesized compounds were subjected to comprehensive characterization techniques including mass spectra, NMR and IR spectroscopy, confirming their structural integrity. Their antimicrobial activity was assessed via minimum inhibitory concentration (MIC) assay against selected bacterial strains. The results emphasize the potential therapeutic applications of these thiophene analogues as efficaci

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3

Widany, J., G. Daminelli, A. Di Carlo, and P. Lugli. "Density-functional Based Tight-binding Calculations on Thiophene Polymorphism." VLSI Design 13, no. 1-4 (2001): 393–97. http://dx.doi.org/10.1155/2001/93289.

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Total energy calculations based on a density-functional tight-binding scheme have been performed on polymorphic modifications of various thiophene crystals. The investigated structures include sulphanyl-substituted quater-thiophene and methyl-substituted sexithiophene, in the monoclinic and triclinic modifications. Attention has been focused on the intermolecular interaction between the molecular units. Despite the similarities in the backbone geometries, the strength and nature of intermolecular interaction differs largely in the various polymorphs. Sulphur atoms belonging to the thiophene ri

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4

Rajni Swamy, V., P. Gunasekaran, R. V. Krishnakumar, N. Srinivasan, and P. Müller. "Crystal structure of [4-(2-methoxyphenyl)-3-methyl-1-phenyl-6-trifluoromethyl-1H-pyrazolo[3,4-b]pyridin-5-yl](thiophen-2-yl)methanone." Acta Crystallographica Section E Structure Reports Online 70, no. 9 (2014): o974—o975. http://dx.doi.org/10.1107/s1600536814017437.

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The title compound, C26H18F3N3O2S, a 2-methoxy-substituted derivative, is closely related to its 4-methyl- and 4-chloro-substituted analogues and yet displays no structural relationships with them. The thiophene ring is disorder free and the –CF3group exhibits disorder, respectively, in contrast and similar to that observed in the 4-methyl- and 4-chloro-substituted derivatives. The torsion angle which defines the twist of the thiophene ring is −69.6 (2)° (gauche) in the title compound, whereas it is anticlinal in the 4-methyl- and 4-chloro-substituted derivatives, with respective values of 99.

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5

Fu, Ying Long, Xue Li, and Gang Liu. "Synthesis and Application of 1-[2-Methyl-5-Phenyl-3-Thiophene]-2-[2-Methyl-5-Phenyl-(4-Vinyl)-3-Thiophene]Perfluorocyclopentene." Applied Mechanics and Materials 662 (October 2014): 87–90. http://dx.doi.org/10.4028/www.scientific.net/amm.662.87.

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A new unsymmetrical photochromic diarylethene 1-(2-methyl-5-phenyl-3-thiophene)-2-[2-methyl-5-phenyl-(4-vinyl)-3-thiophene] perfluorocyclopentene (1o) has been synthesized, and its photochromic reactivity, fluorescent were also investigated. The results showed this compound exhibited reversible photochromism, undergoing reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light in solution,Diarylethene 1 changed the color from colorless to blue upon irradiation with 297 nm UV light, in which absorption maxima were observed at 596 nm in acetonitri

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6

Singh, Durga Prasad, Seema Pratap, Ray J. Butcher, and Sushil K. Gupta. "Methyl 2-(thiophene-2-carboxamido)benzoate." Acta Crystallographica Section E Structure Reports Online 68, no. 6 (2012): o1765. http://dx.doi.org/10.1107/s160053681202082x.

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The title compound, C13H11NO3S, was synthesized from methyl anthranilate, triethylamine and 2-thiophenoyl chloride in benzene. The molecular conformation is stabilized by an intramolecular N—H...O hydrogen bond. The dihedral angle between the rings is 2.74 (12)°. In the crystal, C—H...O interactions link neighbouring molecules into a three-dimensional network.

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7

Li, Rong, Yu Jiao Jiang, Fei Chen, Hong Lei Mao, Yong Hong Wang, and Guo Lun Zhong. "Synthesis and Luminescent Properties of Novel Polythiophene Derivatives with 1,3-Dioxane Group." Materials Science Forum 663-665 (November 2010): 268–71. http://dx.doi.org/10.4028/www.scientific.net/msf.663-665.268.

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Two novel polythiophenes with 1,3-dioxane group in the side chain named poly[3-(1,3-dioxane-2-ylethyl)thiophene] (PDT) and poly[3-(1,3-dioxane-2-ylethyl)-4-methyl- thiophene] (PDMT) were synthesized via oxidative polymerization firstly to form their precursor polymers and substitution secondly to obtain the target polymers in this paper. The chemical structures, molecular weights, thermal properties of the polymers were characterized by 1H NMR, FT-IR, GPC, and TGA respectively, indicating that both polymers had high molecular weight and good thermal stability. Meanwhile, the optical absorption

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8

Lin, Li Gang. "Preparation and Performance of Radiation Grafted Poly(methyl methacrylate)-Graft-Polyimide Pervaporation Membranes for Thiophene/Hydrocarbon Separation." Advanced Materials Research 287-290 (July 2011): 588–91. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.588.

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Radiation grafted poly(methyl methacrylate)-graft-polyimide membranes were prepared for thiophene/hydrocarbon separation. The effects of various grafting conditions such as reaction time, monomer concentration, diluting solvent and initiator amount on the grafting level were investigated. ATR-IR analyses verified the grafting process. Prepared graft modified membranes showed thiophene permselectivity for thiophene/hydrocarbon mixture on pervaporation. At 3.7 % of grafting rate, flux (1.79kg/(m2·h)) and sulfur enrichment factor (3.81) were obtained with 400μg/g feed sulfur content level.

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9

Irgashev, Roman A., Nadezhda S. Demina, Polina E. Bayankina, Nikita A. Kazin, and Gennady L. Rusinov. "An Effective Route to Dithieno[3,2-b:2′,3′-d]thiophene-Based Hexaheteroacenes." Synlett 32, no. 10 (2021): 1009–13. http://dx.doi.org/10.1055/a-1398-7237.

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AbstractA series of 12H-[1]benzo[4′′,5′′]thieno[2′′,3′′:4′,5′]thieno[2′,3′:4,5]thieno[3,2-b]indoles were efficiently prepared in three steps starting from available benzo[b]thieno[2,3-d]thiophen-3(2H)-ones. These fused ketones were treated with the Vilsmeier reagent and hydroxylamine hydrochloride to give the corresponding 3-chlorobenzo[b]thieno[2,3-d]thiophene-2-carbonitriles, which then reacted with methyl sulfanylacetate to form methyl 3-aminobenzo[4′,5′]thieno[2′,3′:4,5]thieno[3,2-b]thiophene-2-carboxylates, in accordance with the Fiesselmann thiophene synthesis protocol. Finally, the desi

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10

Irgashev, Roman A., and Nikita A. Kazin. "Synthesis of Thieno[3,2-b]thiophenes from 2,5-Dicarbonyl 3-Nitrothiophenes via Nucleophilic Aromatic Substitution of the Nitro Group with Thiolates." Organics 5, no. 4 (2024): 507–19. http://dx.doi.org/10.3390/org5040027.

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In this study, we developed an efficient strategy for constructing thieno[3,2-b]thiophene molecules from 3-nitrothiophenes, containing carbonyl fragments at the C-2 and C-5 atoms, by nucleophilic aromatic substitution of the nitro group in these substrates. It was shown that the reaction of 3-nitrothiophene-2,5-dicarboxylates with thiophenols, thioglycolates and 2-mercaptoacetone in the presence of K2CO3 proceeds rapidly via nucleophilic displacement of the nitro group with the formation of 3-sulfenylthiophene-2,5-dicarboxylates. Further treatment of the resulting thiophene-2,5-dicarboxylates,

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11

Ozturk, I. I. "SYNTHESIS, CHARACTERIZATION AND HIRSHFELD SURFACE ANALYSIS OF SOME THIOSEMICARBAZONES CONTAINING A FIVE-MEMBERED RING." Журнал структурной химии 64, no. 4 (2023): 109673. http://dx.doi.org/10.26902/jsc_id109673.

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Thiosemicarbazones, which are multidentate ligands, are considered as one of the most important classes of organic compounds due to their broad spectrum of pharmacological effects and their ability to coordinate easily with metal ions. Four thiosemicarbazones, furan-2-carbaldehyde-N-methyl thiosemicarbazone (Hfmtsc), thiophene-2-acetaldehyde thiosemicarbazone (Hattsc), thiophene-2-acetaldehyde-N-methyl thiosemicarbazone (Hatmtsc) and thiophene-2-acetaldehyde-N-ethyl thiosemicarbazone (Hatetsc) were successfully prepared via condensation reaction using substituted aldehyde and (un)substituted t

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12

YUAN REN-KUAN, HUANG ZHEN-CHUN, ZHENG YOU-DOU, TANG WEN-GUO, LI ZI-YUAN, and SHEN XUE-CHU. "PHOTOLUMINESCENCE OF POLY (3-METHYL THIOPHENE)——P3MT." Acta Physica Sinica 37, no. 5 (1988): 857. http://dx.doi.org/10.7498/aps.37.857.

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13

Yuan, Ren‐Kuan, S. C. Shen, Micha Tomkiewicz, and David S. Ginley. "Photoreflectance of reduced poly 3‐methyl thiophene." Journal of Applied Physics 62, no. 9 (1987): 3932–35. http://dx.doi.org/10.1063/1.339212.

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14

Alley, Steven, John F. Gallagher, Peter T. M. Kenny, and Alan J. Lough. "Methyl 2-[(ferrocenylcarbonyl)amino]thiophene-3-carboxylate." Acta Crystallographica Section E Structure Reports Online 61, no. 2 (2005): m201—m203. http://dx.doi.org/10.1107/s1600536804033355.

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15

Pereira, Ernesto C., and Luis-Otavio de S. Bulhões. "Thermal stability of poly(3-methyl-thiophene)." Polymer Degradation and Stability 46, no. 3 (1994): 333–39. http://dx.doi.org/10.1016/0141-3910(94)90150-3.

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16

Mori, Atsunori, Keisuke Fujita, Chihiro Kubota, et al. "Formal preparation of regioregular and alternating thiophene–thiophene copolymers bearing different substituents." Beilstein Journal of Organic Chemistry 16 (March 5, 2020): 317–24. http://dx.doi.org/10.3762/bjoc.16.31.

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Differently substituted thiophene–thiophene-alternating copolymers were formally synthesized employing a halo-bithiophene as a monomer. Nickel-catalyzed polymerization of bithiophene with substituents at the 3-position, including alkyl-, fluoroalkyl-, or oligosiloxane-containing groups, afforded the corresponding copolymers in good to excellent yield. The solubility test in organic solvents was performed to reveal that several copolymers showed a superior solubility. X-ray diffraction analysis of the thin film of the alternating copolymers composed of methyl and branched oligosiloxane substitu

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17

Demina, Nadezhda S., Nikita A. Kazin, Nikolay A. Rasputin, Roman A. Irgashev, and Gennady L. Rusinov. "Synthesis of aryl-substituted thieno[3,2-b]thiophene derivatives and their use for N,S-heterotetracene construction." Beilstein Journal of Organic Chemistry 15 (November 12, 2019): 2678–83. http://dx.doi.org/10.3762/bjoc.15.261.

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Fiesselmann thiophene synthesis was applied for the convenient construction of thieno[3,2-b]thiophene derivatives. Thus, new 5- or 6-aryl-3-hydroxythieno[3,2-b]thiophene-2-carboxylates were obtained by condensation of 5- or 4-aryl-3-chlorothiophene-2-carboxylates, respectively, with methyl thioglycolate in the presence of potassium tert-butoxide. The saponification of the resulting esters, with decarboxylation of the intermediating acids, gave the corresponding thieno[3,2-b]thiophen-3(2H)-ones. The latter ketones were used to synthesize new N,S-heterotetracenes, namely 9H-thieno[2',3':4,5]thie

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18

Chen, Shangjun, Wenlong Li, Xin Li, and Wei-Hong Zhu. "Substitution effect on the photochromic properties of benzo[b]thiophene-1,1-dioxide based diarylethenes." RSC Advances 5, no. 106 (2015): 87626–34. http://dx.doi.org/10.1039/c5ra18116j.

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Benzo[b]thiophene-1,1-dioxide based diarylethenes containing methyl, phenyl, formyl and triphenylamine groups are developed for taking insight into substituent effects on the absorption properties and photochromism.

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19

Shaibah, Mohammed A. E., Hemmige S. Yathirajan, Nagaraj Manju, Balakrishna Kalluraya, Ravindranath S. Rathore, and Christopher Glidewell. "Two isostructural 3-(5-aryloxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-1-(thiophen-2-yl)prop-2-en-1-ones: disorder and supramolecular assembly." Acta Crystallographica Section E Crystallographic Communications 76, no. 1 (2020): 48–52. http://dx.doi.org/10.1107/s205698901901658x.

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Two new chalcones containing both pyrazole and thiophene substituents have been prepared and structurally characterized. 3-(3-Methyl-5-phenoxy-1-phenyl-1H-pyrazol-4-yl)-1-(thiophen-2-yl)prop-2-en-1-one, C23H18N2O2S (I), and 3-[3-methyl-5-(2-methylphenoxy)-1-phenyl-1H-pyrazol-4-yl]-1-(thiophen-2-yl)prop-2-en-1-one, C24H20N2O2S (II), are isomorphous as well as isostructural, and in each the thiophene substituent is disordered over two sets of atomic sites having occupancies 0.844 (3) and 0.156 (3) in (I), and 0.883 (2) and 0.117 (2) in (II). In each structure, the molecules are linked into sheet

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20

Wang, Xiaohua, Bin Jiang, Chenchen Du, Xiaolei Ren, Zhiming Duan, and Hongyu Wang. "Fluorinated dithienyl-diketopyrrolopyrrole: a new building block for organic optoelectronic materials." New Journal of Chemistry 43, no. 41 (2019): 16411–20. http://dx.doi.org/10.1039/c9nj04060a.

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The synthesis of monofluorinated and difluorinated dithienyl-DPP was reported using a stepwise synthesis method starting from the preparation of pyrrolinone followed by condensation with methyl thiophene-2-carbimidate derivatives.

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21

Fisyuk, Alexander S., Evgeny B. Ulyankin, Yulia P. Bogza, et al. "Photochemical Synthesis of 4H-Thieno[3,2-c]chromene and Their Optical Properties." Synlett 32, no. 08 (2021): 790–94. http://dx.doi.org/10.1055/a-1392-2209.

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Abstract4-{[(2-Iodoaryl)oxy]methyl}thiophene-2-carbaldehydes and 5-iodo-4-(aryloxymethyl)thiophene-2-carbaldehydes were obtained by the reaction of phenols with 4-(chloromethyl)thiophene-2-carbaldehyde or its 5-iodo analogue, respectively. These products underwent ring closure upon irradiation with UV light (254 nm) to form the corresponding 4H-thieno[3,2-c]chromene-2-carbaldehydes in high yield. The formation of intermediate radical species was detected by EPR spectroscopy. Comparative analysis of ring-closure methods showed that photochemical cyclization of 5-iodo-4-(aryloxymethyl)thiophene-

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22

Zhang, Chun-Hui, Fengyuan Lin, Wei Huang, et al. "Methyl functionalization on conjugated side chains for polymer solar cells processed from non-chlorinated solvents." Journal of Materials Chemistry C 8, no. 33 (2020): 11532–39. http://dx.doi.org/10.1039/d0tc02032j.

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Methyl functionalization on conjugated thiophene side chains is developed as an effective fine-tuning approach for polymeric donors, affording substantial efficiency improvement for polymer solar cells processed from non-chlorinated solvents.

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23

Palaniappan, Al, Jamal Ahmed Cheema, Deepa Rajwar, et al. "Polythiophene derivative on quartz resonators for miRNA capture and assay." Analyst 140, no. 23 (2015): 7912–17. http://dx.doi.org/10.1039/c5an01663k.

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A novel approach for miRNA assay using a cationic polythiophene derivative, poly[3-(3′-N,N,N-triethylamino-1′-propyloxy)-4-methyl-2,5-thiophene hydrobromide] (PT), immobilized on a quartz resonator is proposed.

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24

Solov‘ev’, V. O., S. V. Solov’eva, and N. A. Milevsky. "Thiophene extraction in PEG - hexan - water based systems." IOP Conference Series: Materials Science and Engineering 1212, no. 1 (2022): 012025. http://dx.doi.org/10.1088/1757-899x/1212/1/012025.

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Abstract The effect of individual and multicomponent additives of sodium chloride, iron chloride, sodium nitrate and 1-methyl-2-pyrrolidone on the interfacial distribution of thiophene in the systems polyethylene glycol 1500 (PEG-1500) - hexane - water and polyethylene glycol 8000 (PEG-8000) - hexane - water has been studied in this investigation. It was found that in most cases, the introduction of a small amount of individual and joint additives increases the extraction of thiophene from the organic phase to the aqueous.

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25

Bădiceanu, Carmellina Daniela, Catalina Mares, Diana Camelia Nuță, et al. "N-Substituted (Hexahydro)-1H-isoindole-1,3(2H)-dione Derivatives: New Insights into Synthesis and Characterization." Processes 11, no. 6 (2023): 1616. http://dx.doi.org/10.3390/pr11061616.

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Novel phthalimide derivatives, namely N-(1,3-dioxoisoindolin-2-yl)-2-(2-methyl-4-oxoquinazolin-3(4H)-yl)acetamide (1a) and N-(1,3-dioxoisoindolin-2-yl)thiophene-2-carboxamide (1b), and hexahydrophthalimide derivative N-(1,3-dioxohexahydro-1H-isoindol-2(3H)-yl)-2-(2-methyl-4-oxoquinazolin-3(4H)-yl)acetamide (2), have been synthesized. The phthalimide derivatives were synthesized from phthalic anhydride and 2-(2-methyl-4-oxoquinazolin-3(4H)-yl)acetohydrazide or thiophene-2-carbohydrazide, and the hexahydrophthalimide derivative has been synthesized from hexahydrophthalic anhydride and 2-(2-methy

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26

Charlton, James L. "Diastereoselectivity and asymmetric induction in the Diels–Alder reaction of o-quinodimethanes." Canadian Journal of Chemistry 64, no. 4 (1986): 720–25. http://dx.doi.org/10.1139/v86-116.

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The extent of asymmetric induction in the bimolecular Diels–Alder reactions of chiral o-quinodimethanes with dimethyl fumarate, methyl acrylate, and maleic anhydride has been studied. o-Quinodimethanes with chiral α-alkoxy groups were prepared from 1-alkoxy-1,3-dihydrobenzo[c]thiophene-2,2-dioxides 4a–f or 1-alkoxy-3-phenyl-1,3-dihydrobenzo[c]thiophene-2,2-dioxides 4g–h by thermolysis. These alkoxybenzosulfones were prepared from the corresponding hydroxybenzosulfones 8 and 1-phenylethanol, 2-phenyl-1-propanol, 4-phenyl-2-butanol, 1-phenyl-2-propanol, 3,3-dimethyl-2-butanol, or 1-cyclo-hexylet

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27

Sun, Xian-Shun, Nan-Qi Shao, and Dan-Dan Li. "5-[(2-Hydroxyethyl)(methyl)amino]thiophene-2-carbaldehyde." Acta Crystallographica Section E Structure Reports Online 70, no. 6 (2014): o724. http://dx.doi.org/10.1107/s1600536814012021.

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In the title compound, C8H11NO2S, the aldehyde group is approximately coplanar with the thiophene ring [maximum deviation = 0.023 (2) Å]. In the crystal, molecules are linked by O—H...O hydrogen bonds into supramolecular chains propagating along thea-axis direction.

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28

Jiao, Yuan-Hong, Qian Zhang, and Seik Weng Ng. "Diethyl 3-methyl-5-(triphenylphosphoranyleneamino)thiophene-2,4-dicarboxylate." Acta Crystallographica Section E Structure Reports Online 63, no. 11 (2007): o4466. http://dx.doi.org/10.1107/s1600536807051689.

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The title iminophosphorane, C29H28NO4PS, a thiophene compound with the sterically crowded –N=P(C6H5)3 substituent in the α-position of the aromatic ring, features an N =P double bond of length 1.572 (3) Å. One of the phenyl rings is coplanar with the plane of the three ipso-C atoms, whereas the other two are approximately orthogonal.

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29

Du Pasquier, Aurelien, Alexis Laforgue, and Patrice Simon. "Li4Ti5O12/poly(methyl)thiophene asymmetric hybrid electrochemical device." Journal of Power Sources 125, no. 1 (2004): 95–102. http://dx.doi.org/10.1016/j.jpowsour.2003.07.015.

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30

Trumbo, David L. "Copolymerization behavior of 5-methyl-2-vinyl thiophene." Polymer Bulletin 28, no. 3 (1992): 309–13. http://dx.doi.org/10.1007/bf00294827.

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31

Li, Liang, Wei Chen, Ning Xu, Zhenggang Xiao, and Gi Xue. "Electrochemical copolymerization of furan and 3-methyl thiophene." Journal of Materials Science 39, no. 7 (2004): 2395–98. http://dx.doi.org/10.1023/b:jmsc.0000020001.34413.e5.

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32

Gomes, Alex L., Jordi Casanovas, Oscar Bertran, João Sinézio de C. Campos, Elaine Armelin, and Carlos Alemán. "Electronic properties of poly(thiophene-3-methyl acetate)." Journal of Polymer Research 18, no. 6 (2011): 1509–17. http://dx.doi.org/10.1007/s10965-010-9556-4.

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33

Tarkhanova, I. G., A. G. Ali-Zade, A. K. Buryak, and V. M. Zelikman. "The effect of the nature of metal-containing anions on the catalytic properties of imidazolium derivatives immobilized on silochrom in oxidative desulfurization." Kataliz v promyshlennosti 22, no. 4 (2022): 43–50. http://dx.doi.org/10.18412/1816-0387-2022-4-43-50.

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Two types of catalysts – Fenton catalysts based on Cu(I) and Fe(III), and polyoxometalates Mo(VI) and W(VI) – were compared in the oxidation of sulfur-containing compounds by hydrogen peroxide and desulfurization of oil stock. Heterogeneous samples were represented by imidazolium salts chemically anchored on the silochrom surface and containing chloride complexes of iron and copper or anions of phosphomolybdic and tungstophosphoric acids. Thiophene (T), dibenzothiophene (DBT) and methyl phenyl sulfide (MPS) as well as the diesel fraction with the initial sulfur content of 1080 ppm were used as

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34

Yu, Chuanming, Yanmei Wen, and Xinhuang Kang. "Photochromic dithienylethene based on porphyrin for a nondestructive information processing." Journal of Porphyrins and Phthalocyanines 22, no. 06 (2018): 475–80. http://dx.doi.org/10.1142/s1088424618500384.

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A 1-[2-methyl-5-(4-tetraphenylporphyrinphenyl)-3-thienyl)-2-[2-methyl-3-thienyl]cyclopentene combined by 3,3[Formula: see text]-(1-cyclopentene-1,2-diyl)bis(5-chloro-2-methyl)thiophene and tetraphenylporphyrin can transform between the open isomer and the closed isomer upon the irradiation of UV or visible light. Thus they can be utilized to write binary data. Furthermore, the open form can emit luminescence but the closed cannot while irradiated by another light that cannot cause optical chemical reactions. Therefore, data can be read out without damage.

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35

Yu, Xiao Jiao, Hai Ling Hao, Jian Zhang, Gang Zheng, and Bing Hua Yao. "Desulfurization of Fuel Oils by Extraction with Ionic Liquids." Advanced Materials Research 396-398 (November 2011): 2221–24. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.2221.

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Four N-alkyl-pyridinium-based ionic liquids, N-ethyl-pyridinium hexafluorophosphate, N-butyl-pyridinium hexafluorophosphate,4-methyl-1-ethyl-pyridinium hexafluorophosphate，and 4-methyl-1- butyl -pyridinium hexafluorophosphate were synthetized by microwave method . The simulated gasoline was prepared by mixing n-hexane, n-heptane,toluene and thiophene. Effect of extraction temperature, the ratio of solvents and diverse ionic liquids are investigated with extraction equilibrium experiment. The best conditions of transport desulfurization are discussed. The result showed that the partition ratio

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36

Novikov, Roman A., Dmitry N. Platonov, Alexander Yu Belyy та ін. "6-Bromoindole- and 6-Bromoindazole-Based Inhibitors of Bacterial Cystathionine γ-Lyase Containing 3-Aminothiophene-2-Carboxylate Moiety". Molecules 30, № 2 (2025): 388. https://doi.org/10.3390/molecules30020388.

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In recent years, a number of synthetic potentiators of antibiotics have been discovered. Their action can significantly enhance the antibacterial effect and limit the spread of antibiotic resistance through inhibition of bacterial cystathionine-γ-lyase. To expand the known set of potentiators, we developed methods for the synthesis of five new representatives of 6-bromoindole derivatives—potential inhibitors of bacterial cystathionine-γ-lyase—namely potassium 3-amino-5-((6-bromoindolyl)methyl)thiophene-2-carboxylate (MNS2) and its 6-bromoindazole analogs (MNS3 and MNS4), along with two 6-broin

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37

Swain, Risa Mia, Anahi Sanchez, Denisse A. Gutierrez, Armando Varela-Ramirez, and Renato J. Aguilera. "Thiophene derivative inflicts cytotoxicity via an intrinsic apoptotic pathway on human acute lymphoblastic leukemia cells." PLOS ONE 18, no. 12 (2023): e0295441. http://dx.doi.org/10.1371/journal.pone.0295441.

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In an effort to identify novel anti-cancer agents, we employed a well-established High Throughput Screening (HTS) assay to assess the cytotoxic effect of compounds within the ChemBridge DIVERSet Library on a lymphoma cell line. This screen revealed a novel thiophene, F8 (methyl 5-[(dimethylamino)carbonyl]-4-methyl-2-[(3-phenyl-2-propynoyl) amino]-3-thiophenecarboxylate), that displays anti-cancer activity on lymphoma, leukemia, and other cancer cell lines. Thiophenes and thiophene derivatives have emerged as an important class of heterocyclic compounds that have displayed favorable drug charac

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Sahu, Satya Narayan, Maneesh Kumar Gupta, Surjeet Singh, et al. "One pot synthesis of tetrasubstituted thiophenes: [3 + 2] annulation strategy." RSC Advances 5, no. 46 (2015): 36979–86. http://dx.doi.org/10.1039/c5ra01290b.

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A simple, efficient and economical synthesis of dimethyl 3-amino-5-(2-oxo-2-arylethyl)thiophene-2,4-dicarboxylates has been reported by ring opening of methyl 3-amino-6-aryl-4-oxo-4H-thieno[3,2-c]pyran-2-carboxylates by alkoxide ions.

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39

Hansson, Rickard, Camilla Lindqvist, Leif K. E. Ericsson, Andreas Opitz, Ergang Wang, and Ellen Moons. "Photo-degradation in air of the active layer components in a thiophene–quinoxaline copolymer:fullerene solar cell." Physical Chemistry Chemical Physics 18, no. 16 (2016): 11132–38. http://dx.doi.org/10.1039/c5cp07752d.

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We have studied the photo-degradation in air of a blend of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) and poly[2,3-bis-(3-octyloxyphenyl)quinoxaline-5,8-diyl-alt-thiophene-2,5-diyl] (TQ1), and how the photo-degradation affects the solar cell performance.

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40

Brandsma, L., and D. Schuijl-Laros. "Rearrangement of 2- and 3-(propargylthio)thiophene into 2-methylthieno[2,3-b]thiophene and 2-methyl-thieno[3,2-b]thiophene." Recueil des Travaux Chimiques des Pays-Bas 89, no. 1 (2010): 110–13. http://dx.doi.org/10.1002/recl.19700890115.

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41

Struhárik, Milan, Pavel Hrnčiar, and Dušan Loos. "Kinetics of alkaline hydrolysis of mono- and dimethyl esters of 2,3- and 3,4-thiophenedicarboxylic acids, cyanothiophenecarboxylic acids and their dihydroanalogues." Collection of Czechoslovak Chemical Communications 52, no. 8 (1987): 2005–18. http://dx.doi.org/10.1135/cccc19872005.

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Kinetics of alkaline hydrolysis of mono- and dimethyl esters of 2,3- and 3,4-thiophenedicarboxylic acids and their dihydroanalogues have been studied in 70% dioxane. The rate measurements have been carried out by the titrimetric method and the k1, k2 rate constants evaluated by the Frost-Schwemer method. The activation parameters of these reactions have been calculated. The results are compared with kinetic parameters of alkaline hydrolysis of methyl and dimethyl phthalates. The hydrolysis rate is significantly affected by the cyclic system to which the methoxycarbonyl groups are bound, the re

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42

Süleymanoğlu, Nevin, Reşat Ustabaş, Şahin Direkel, Yelda Bingöl Alpaslan, and Yasemin Ünver. "1,2,4-triazole derivatives with morpholine; DFT study and antileishmanial activity." Canadian Journal of Physics 96, no. 7 (2018): 719–23. http://dx.doi.org/10.1139/cjp-2017-0710.

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1,2,4-triazole derivatives with morpholine; 4-((3-methylthiophene–2-yl)methylenamino)-1-((4-(3-methylthiophene–2-yl)methylene amino)-1-(morpholinomethyl)-5-thioxo-4,5-dihydro-1H-1,2,4-triazole-3-yl)methyl)-3-(thiophene–2-ylmethyl)-1H-1,2,4-triazole-5(4H)-one (compound I) and 1-((1-(morpholinomethyl)–4-(5-nitrothiophene–2-yl)methyleneamino)-5-thioxo-4,5-dihydro-1H-1,2,4-triazole-3-yl)methyl)-4-((5-nitrothiophene–2-yl)methyleneamino)-3-(thiophene–2-ylmethyl)-1H-1,2,4-triazole-5(4H)-one (compound II), were optimized using a density functional theory (DFT) method with 6-311G(d,p) basis set and str

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43

Cui, Shi Qiang, Min Deng, Ren Jie Wang, and Gang Liu. "Synthesize, Photochromic and Application for Optical Recording of Diarylthene Bearing Naphthyl Unit." Advanced Materials Research 602-604 (December 2012): 904–7. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.904.

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A new photochromic diarylethene bearing thiophene and naphtyl unit 1-(2-methyl-1-naphthyl)-2-[2-methyl-5-(2-cyanophenyl)-3-thienyl]perfluorocyclopentene (1o), was synthesized and its phtochromic, fluorescence, kinetics and optical recording properties were investigated in detail. This compound exhibited remarkable photochromism, changing from colorless to red after irradiation with 297 nm UV light both in solution and in PMMA film. Finally, using diarylethene 1c as recording medium, polarization optical recording was carried out successfully.

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Li, Jianfeng, Zezhou Liang, Yufei Wang, et al. "Enhanced efficiency of polymer solar cells through synergistic optimization of mobility and tuning donor alloys by adding high-mobility conjugated polymers." Journal of Materials Chemistry C 6, no. 41 (2018): 11015–22. http://dx.doi.org/10.1039/c8tc03612h.

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A diketopyrrolopyrrole-based small bandgap polymer (DPPT-TT) with high mobility is introduced as an additive to D–A1–D–A2 type thieno[3,4-b]thiophene-based random copolymer (P3):(6,6)-phenyl-C<sub>70</sub>-butyric acid methyl ester (PC<sub>71</sub>BM) polymer solar cells (PSCs).

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45

Vuk, Dragana, Irena Škorić, Valentina Milašinović, Krešimir Molčanov, and Željko Marinić. "A simple and easy to perform synthetic route to functionalized thienyl bicyclo[3.2.1]octadienes." Beilstein Journal of Organic Chemistry 16 (May 22, 2020): 1092–99. http://dx.doi.org/10.3762/bjoc.16.96.

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In order to prepare novel polycyclic derivatives of bicyclo[3.2.1]octadiene systems fused with a thiophene ring, photochemical cyclization and aldol condensation reactions were carried out. The starting substrates were easily obtained by a Vilsmeier–Haack reaction of bicyclo[3.2.1]octadiene thiophene derivatives with dimethylformamide. From the obtained carbaldehydes, novel methyl, methoxy, and cyano-substituted styryl thienobenzobicyclo[3.2.1]octadiene derivatives were synthesized through Wittig reactions and subjected to photochemical cyclization, in terms of obtaining the new annulated stru

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Jiang, Jin-He. "N′-[(5-Methyl-2-furyl)methylene]thiophene-2-carbohydrazide." Acta Crystallographica Section E Structure Reports Online 66, no. 4 (2010): o924. http://dx.doi.org/10.1107/s1600536810010810.

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Garbarczyk, J., and M. Krolikowska. "Crystal structure of N-methyl-2-thioamide-thiophene, C6H7NS2." Zeitschrift für Kristallographie 198, no. 3-4 (1992): 318–19. http://dx.doi.org/10.1524/zkri.1992.198.3-4.318.

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He, Yu-xin, Rong-sheng Tong, Jin-wei Wu, Zou Jing, and Jian-you Shi. "N-Cyclohexyl-4-[(2-nitroanilino)methyl]thiophene-2-sulfonamide." Acta Crystallographica Section E Structure Reports Online 67, no. 10 (2011): o2779. http://dx.doi.org/10.1107/s160053681103861x.

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Sivaraman, P., Avinash P. Thakur, and K. Shashidhara. "Poly(3-methyl thiophene)-graphene nanocomposites for asymmetric supercapacitors." Synthetic Metals 259 (January 2020): 116255. http://dx.doi.org/10.1016/j.synthmet.2019.116255.

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Udum, Yasemin Arslan, Kadir Pekmez, and Attila Yildiz. "Electrochemical synthesis of soluble sulfonated poly(3-methyl thiophene)." European Polymer Journal 40, no. 6 (2004): 1057–62. http://dx.doi.org/10.1016/j.eurpolymj.2004.01.007.

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