Relevant bibliographies by topics / 2-acetyl thiophene

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  2. Dissertations / Theses

Academic literature on the topic '2-acetyl thiophene'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "2-acetyl thiophene"

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Sereda, Grigoriy, Akash Mamon Sarkar, Anwar Hussain, and Nikolai Zefirov. "Solvent-Free and Liquid-Phase Iodination of Thiophene Derivatives with Potassium Dichloroiodate Monohydrate." Synthesis 52, no. 07 (2020): 1140–46. http://dx.doi.org/10.1055/s-0039-1690795.

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Iodination of a series of benzene and thiophene derivatives by potassium dichloroiodate monohydrate was studied with and without a solvent. The liquid substrates tend to be more reactive in water while the solid substrates afford better yields in dichloromethane or under the solvent-free conditions. The 2-substituted thiophenes show good to excellent yields whereas the yield for 3-substituted and 3,4- or 2,4-disubstituted thiophenes and benzene derivatives are significantly lower. The mechanochemical reaction of 5-carbaldehyde-2,2′-bithiophene shows excellent yields, while 2,2′-bithiophene giv
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Yilmaz, Fatih. "Synthesis and Characterisation of Some New Hybrid Molecules Containing Thiophene, Triazole and Coumarin Rings under Microwave Conditions." Journal of Chemical Research 42, no. 7 (2018): 361–65. http://dx.doi.org/10.3184/174751918x15314831778603.

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In this work, a new series of N‘-{[4-amino-5-oxo-3-(thiophen-2-yl)-4,5-dihydro-1H-1,2,4-triazol-1-yl]acetyl}-2-oxo-2H-1-benzopyran-3-carbohydrazides (thiophene–triazole–coumarin hybrid molecules) was synthesised from the reaction of 2-[4-amino-5-oxo-3-(thiophen-2-yl)-4,5-dihydro-1H-1,2,4-triazol-1-yl]acetohydrazide and 3-(1H-benzotriazol-1-ylcarbonyl)-2H-chromen-2-ones by using microwave irradiation and conventional heating procedures and their results were compared. The reaction was performed using a very small amount of organic solvent and without using a catalyst.
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Blake, Alexander J., Bernard A. J. Clark, Hedi Gierens, et al. "Intramolecular and intermolecular geometry of thiophenes with oxygen-containing substituents." Acta Crystallographica Section B Structural Science 55, no. 6 (1999): 963–74. http://dx.doi.org/10.1107/s0108768199003547.

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The intramolecular and intermolecular geometries of six thiophenes carrying oxygen-containing substituents have been determined. Crystals of 2-methoxythiophene and 3-methoxythiophene were grown in situ on a diffractometer from liquid samples. The 2-methoxy group introduces significant distortions to the thiophene nucleus and each molecule participates in four S...O contacts leading to an infinite bilayer. The extended structure of 3-methoxythiophene comprises zigzag chains of molecules linked by S...O contacts. Molecules of 2-acetyl-3-methoxythiophene are arranged in pairs about inversion cent
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Prasad, N. L., M. S. Krishnamurthy, and Noor Shahina Begum. "Crystal structure of ethyl 2-acetyl-3,7-dimethyl-5-(thiophen-2-yl)-5H-thiazolo[3,2-a]pyrimidine-6-carboxylate." Acta Crystallographica Section E Crystallographic Communications 71, no. 7 (2015): o477—o478. http://dx.doi.org/10.1107/s2056989015010981.

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In the title compound, C17H18N2O3S2, the pyrimidine ring adopts a shallow sofa conformation, with the C atom bearing the axially-oriented thiophene ring as the flap [deviation = 0.439 (3) Å]. The plane of the thiophene ring lies almost normal to the pyrimidine ring, making a dihedral angle of 79.36 (19)°. In the crystal, pairs of very weak C—H...O hydrogen bonds link the molecules related by twofold rotation axes, formingR22(18) rings, which are in turn linked by another C—H...O interaction, forming chains of rings along [010]. In addition, weak C—H...π(thiophene) interactions link the chains
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Chang, Fang-Pin, Chien-Chih Chen, Hui-Chi Huang, et al. "A New Bithiophene from the Root of Echinops grijsii." Natural Product Communications 10, no. 12 (2015): 1934578X1501001. http://dx.doi.org/10.1177/1934578x1501001234.

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A new bithiophene, 5-(4-hydroxy-3-methoxy-1-butyny)-2,2′-bithiophene (1), and sixteen known thiophenes: 2-(3,4-dihydroxybut-1-ynyl)-5-(penta-1,3-diynyl)thiophene (2), α-terthienyl (3), 5-(3,4-dihydroxybut-1-ynyl)-2,2′-bithiophene (4), 5-acetyl-2,2′-bithiophene (5), 5-formyl-2,2′-bithiophene (6), methyl 2,2′-bithiophene-5-carboxylate (7), 5-(but-3-en-1-ynyl)-2,2′-bithiophene (8), 5-(4-isovaleroyloxybut-1-ynyl)-2,2′-bithiophene (9), cardopatine (10), isocardopatine (11), 5-(3-hydroxy-4-isovaleroyloxybut-1-ynyl)-2,2′-bithiophene (12), 5-(3-hydroxymethyl-3-isovaleroyloxyprop-1-ynyl)-2,2′-bithiophe
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6

Prasad, N. L., M. S. Krishnamurthy, H. Nagarajaiah, and Noor Shahina Begum. "Crystal structure of ethyl 5-acetyl-2-{[(dimethylamino)methylidene]amino}-4-methylthiophene-3-carboxylate." Acta Crystallographica Section E Crystallographic Communications 71, no. 10 (2015): o762—o763. http://dx.doi.org/10.1107/s2056989015016217.

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In the title thiophene derivative, C13H18N2O3S, the dihedral angles between the thiophene ring and the [(dimethylamino)methylidene]amino side chain (r.m.s. deviation = 0.009 Å) and the –CO2ester group are 3.01 (16) and 59.9 (3)°, respectively. In the crystal, inversion dimers linked by pairs of C—H...O hydrogen bonds generateR22(16) loops. The dimers are linked by another weak C—H...O interaction, forming chains along [001]. In addition, weak C—H...π interactions are observed, which link the chains into (001) layers.
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7

Ramesh, B., and B. Someswara Rao. "Synthesis, Spectral Studies and Anti-Inflammatory Activity of 2-Acetyl Thiophene." E-Journal of Chemistry 7, no. 2 (2010): 433–36. http://dx.doi.org/10.1155/2010/404715.

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Some new chalcones have been synthesized by the condensation of 2-acetyl thiophene with various aromatic aldehydes in 40% alkali. The synthesized compounds were identified by spectral data and screened for anti-inflammatory activity. Some of these compounds showed moderate to considerable anti-inflammatory activity.
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8

Zhao, Sheng Min, Wei Lin Zhang, Han Hui Huang, and Wen Guan Zhang. "Study of Dithienylcyclopentene with Substituents at 4-Position of Thiophene." Advanced Materials Research 1033-1034 (October 2014): 1105–8. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.1105.

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1-(2,5-Dimethylthien-3-yl)-2-(4-acetyl-2,5-dimethylthien-3-yl) cyclopentene has been synthesized by a six-step procedure, such as Vilsmeier reaction, Wolff-Kishner-Huang reduction reaction, The Friedel-Crafts acylation, McMurry reaction etc. Upon alternate irradiation with 297 and 500 nm light upon 1-(2,5-Dimethylthien-3-yl)-2-(4-acetyl-2,5-dimethylthien-3-yl) cyclopentene, the absorption spectrum changes reversibly and a clear isosbestic point appears. These results suggest that the compound can undergo photochromism and do not decompose during the irradiation.
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9

Mohan, Chandra, Vinod Kumar, and Sarla Kumari. "SYNTHESIS, CHARACTERIZATION, AND ANTIBACTERIAL ACTIVITY OF SCHIFF BASES DERIVED FROM THIOSEMICARBAZIDE, 2-ACETYL THIOPHENE AND THIOPHENE-2 ALDEHYDE." International Research Journal of Pharmacy 9, no. 7 (2018): 153–58. http://dx.doi.org/10.7897/2230-8407.097141.

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10

Sulekh, Chandra, and Kumar Anil. "Synthesis, spectral and physicochemical studies of CoII, NiII and CuII complexes with thiosemicarbazone (L1) and semicarbazone (L2) derived from 2-acetyl thiophene." Journal of Indian Chemical Society Vol. 83, Oct 2006 (2006): 993–98. https://doi.org/10.5281/zenodo.5830869.

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Department of Chemistry, Zakir Husain College, J. L. N. Marg, New Delhi-110 002, India E-mail: schandra_OQ@yahoo.com; anil_sharma957@yahoo.com <em>Manuscript received 18 May 2006, accepted 31 July 2006</em> Co<sup>II</sup>, Ni<sup>II</sup> and Cu<sup>II</sup> complexes are synthesized with thiosemicarbazone (L<sup>1</sup>) and semicarbazone (L<sup>2</sup>) derived from 2-acetyl thiophene. These complexes are characterized by elemental analysis, molar conductance, magnetic susceptibility measurements, mass, IR, electronic and EPR spectral studies. The molar conductance measurements of the compl
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Dissertations / Theses on the topic "2-acetyl thiophene"

1

Mahmoud, Ahmed B. Abdelwahab. "Synthesis and reactivity of 3-acetyl-2-aminothiophenes." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0318/document.

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Un intérêt grandissant pour le système thiéno[2,3-b] pyridine est apparu ces trois dernières décennies. De nombreux chercheurs ont présentés des composés basés sur ce système comme traitement possible de l'anxiété et de la dépression, comme bactéricide, contre l'inflammation et la leishmania, la malaria et les maladies auto-immunes. Les ortho-amino acyl thiophènes sont des produits de départ possible pour synthétiser ces motifs. L'accès à ce type de composés sera la première étape de ce travail. Nous décrivons ici la première synthèse de 3-acétyl-2-aminothiophènes en utilisant la réaction à 3
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Andriamadio, Pascal. "Amino-2 thiophènes et dérivés : Constantes d'acidité et mesures de rotations empêchées en milieux non aqueux." Nancy 1, 1986. http://www.theses.fr/1986NAN10957.

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Les amino-2 thiophènes diversement substitués en position 5 sont insolubles dans l'eau et la première partie de ce travail a consisté à rechercher des solvants aprotiques suffisamment dissociants pour permettre la mesure du pH au moyen d'indicateurs colorés. Des relations de BRONSTED satisfaisantes ont été obtenues respectivement dans l'acétonitrile et dans le DMSO. Dans la deuxième partie, l'étude par RMN des autres dérivés R5 = H, CI, COCH3, CHO et NO2 a permis de montrer que le rapport de population entre les deux isomères X et Y s'inverse par passage de NO2 à H (PX/PY = 0. 074 et 9,65 dans
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