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Journal articles on the topic '2-acetyl thiophene'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

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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2

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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3

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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4

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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5

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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11

Ramesh, B., and T. Sumana. "Synthesis and Anti-Inflammatory Activity of Pyrazolines." E-Journal of Chemistry 7, no. 2 (2010): 514–16. http://dx.doi.org/10.1155/2010/731675.

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Some new pyrazoline derivatives were synthesized by reacting chalcones of 2-acetyl thiophene with phenyl hydrazine hydrochloride in the presence of alcohol. 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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12

Geetha, D., Y. B. Basavaraju, and K. Roopa. "Synthesis and Biological Evaluation of New Chalcone based Thiazole Derivatives: Antimicrobial, Antifungal Activity, ADME and Molecular Docking Studies." Asian Journal of Chemistry 37, no. 3 (2025): 593–600. https://doi.org/10.14233/ajchem.2025.33226.

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The Claisen-Schmidt condensation reaction of 2-acetyl thiophene with heterocyclic carboxaldehyde or substituted benzaldehyde in the presence of alkaline medium was used to synthesize novel thiophene chalcones. Several chalcone heterocycle hybrids appear to have more activity than the standards. These chalcones can be hydroaminated to provide good yields of amino thiazole derivatives. The newly synthesized compounds were characterized with spectroscopic techniques including FT-IR, 1H NMR, 13C NMR and HRMS. In addition to a seed germination inhibition test and an evaluation of the synthesized co

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13

Al-Azmi, Amal, and Elizabeth John. "Synthesis of 4-arylazo-2-(N-pyrazolylcarboxamido)thiophene disperse dyes for dyeing of polyester and their antibacterial evaluation." Textile Research Journal 90, no. 23-24 (2020): 2795–805. http://dx.doi.org/10.1177/0040517520931476.

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The current article aims to synthesize some new arylazo-thiophenes for dyeing polyester fabrics and screen their antimicrobial activities. The new 4-arylazo-2-( N-pyrazolylcarboxamido)-thiophene dyes 4a–e were prepared by the reaction of 2-acetyl-2-arylazo-thioacetanilide derivative 1 with 2-chloro- N-(3-methyl-1 H-pyrazol-5-yl)acetamide derivative 2. The structures of these prepared analogues were established via Fourier-transform infrared and 1H/13C nuclear magnetic resonance spectra. The synthesized dyestuffs were applied to polyester fabrics after establishing the optimal dyeing conditions

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14

Buncel, Erwin, John R. Jones, Kassim Sowdani, Domenico Spinelli, Giovanni Consiglio, and Caterina Arnone. "Intramolecular catalysis in the detritiation of 3-carboxy-2-([3H]acetyl)thiophene." Journal of the Chemical Society, Perkin Transactions 2, no. 4 (1985): 559. http://dx.doi.org/10.1039/p29850000559.

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15

Mishra, Lallan, Ragini Sinha, and P. C. Pandey. "Construction of Ru(II) Polypyridyl Based Macrocycles: Synthesis, Characterization, Electrochemical, Li+ Binding, Antitumour and Anti-HIV properties." Metal-Based Drugs 8, no. 2 (2001): 113–17. http://dx.doi.org/10.1155/mbd.2001.113.

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Some ruthenium (II) polypyridyl complexes with a bis-chalcone (obtained by the condensation of 3-methyl-thiophene-2-carboxaldehyde and 4-acetyl pyridine) have been synthesized and characterized spectroscopically (IR, NMR, UV/Vis), conductimetric, elemental analysis and FAB mass data. Their luminescent, redox and Li+ binding properties have been studied. The anti-HIV and antitumour activities have also been reported.

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16

Jois, Vidyashree, Balakrishna Kalluraya, and K. S. Girisha. "Synthesis and antioxidant activity study of pyrazoline carrying arylfuran/thiophene moiety." Journal of the Serbian Chemical Society 79, no. 12 (2014): 1469–75. http://dx.doi.org/10.2298/jsc140109090j.

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A novel series of N-acetyl-3-aryl-5-(5-(p/o-nitrophenyl)-2-arylfuryl/thienyl) substituted pyrazoline (3a-o) were synthesized by the reaction of 1-aryl-3-(5-(p/o-nitrophenyl)-2-furyl/thienyl)-2-propene-1-one with hydrazine hydrate in acetic acid medium. The structures of the newly synthesized compounds were established by IR, 1H NMR, mass spectra and single crystal X-ray study. The synthesized compounds were subjected to antioxidant activity using DPPH scavenging assay. The compounds 3a, 3f, 3h and 3o showed moderate activity.

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17

Goitia, Helen, M. Villacampa, Antonio Laguna, and M. Gimeno. "Cytotoxic Gold(I) Complexes with Amidophosphine Ligands Containing Thiophene Moieties." Inorganics 7, no. 2 (2019): 13. http://dx.doi.org/10.3390/inorganics7020013.

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A new phosphine ligand bearing a thiophene moiety, C4H3SNHCOCH2CH2PPh2 (L), has been prepared by reaction of the aminophosphine Ph2PCH2CH2NH2 with thiophenecarbonylchloride in the presence of triethylamine. The coordination behavior towards gold(I), gold(III) and silver(I) species has been studied and several metal compounds of different stoichiometry have been achieved, such as [AuL2]OTf, [AuXL] (X = Cl, C6F5), [Au(C6F5)3L], [AgL2]OTf or [Ag(OTf)L]. Additionally, the reactivity of the chloride gold(I) species with biologically relevant thiolates was explored, thus obtaining the neutral thiola

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18

Mohareb, Rafat M., Wagnat W. Wardakhan, and Faten I. Hamed. "Synthesis and cytotoxicity of fused thiophene and pyrazole derivatives derived from 2-N-acetyl-3-cyano-4,5,6,7-tetrahydrobenzo[b]thiophene." Medicinal Chemistry Research 24, no. 5 (2014): 2043–54. http://dx.doi.org/10.1007/s00044-014-1273-9.

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19

Usman, Bishir, Hasmerya Maarof, Hassan H. Abdallah, and Madzlan Aziz. "Inhibition performance of mild steel corrosion in acidic media using 2-thiophene acetyl chloride." Bayero Journal of Pure and Applied Sciences 10, no. 1 (2018): 590. http://dx.doi.org/10.4314/bajopas.v10i1.111s.

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20

Koeller, Kevin J., William H. Miller, and Daniel P. Walker. "Towards the development of a safe, metal-catalyzed aerobic oxidation of 2-acetyl thiophene." Tetrahedron Letters 144 (July 2024): 155137. http://dx.doi.org/10.1016/j.tetlet.2024.155137.

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21

Satheesh, Dhurairaj, S. Kannan, A. Gomathi, and M. Syed Ali Padusha. "Organic Ligand 1-(1-Morpholino-1-(Thiophen-2-yl)Ethyl)-3-Phenylurea: Synthesis, Characterization, Derivatives and Exploration of Bioactivity." Mapana Journal of Sciences 22, no. 3 (2023): 119–39. https://doi.org/10.12723/mjs.66.6.

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Organic compounds possessing a comparatively higher number of nitrogens have gained attention in the upcoming fields of medicine and research. Synthesizing new drugs with a greater number of nitrogen atoms in their structure skeleton places challenges. Unique features, say lipophilicity carried by Mannich bases and their bivalent metal coordination complexes, claim themselves to be potential sources [1-3]. Heterocyclic organic compounds rooted through amines and amides possess enhanced absorption through bio-membranes because of their lipophilicity which results in boundless pharmaceutical app

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22

Hari, S. Yadav, and L. Kumawat Gopal. "Synthesis, Spectroscopic, Biological, and Theoretical Evaluation of Novel Zirconium (IV) N, O Donor Amino Acid Schiff Base Complexes." Chemistry Research Journal 8, no. 1 (2023): 12–22. https://doi.org/10.5281/zenodo.11296500.

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<strong>Abstract </strong>A series of<strong> </strong>novel dichlorozirconium (IV) Schiff bases complexes [ZrCl<sub>2</sub> (L)<sub>2</sub>] (LH = N, O donor Schiff base derived by the condensation of 2-Acetyl-5-methylfuran & 2-acetyl-4-methyl thiophene with amino acids) were synthesized by the reaction of zirconium (IV) chloride and sodium salt of an N, O donor Schiff base ligand and characterized. The authenticity of all the synthesized ligands and their Zr (IV) complexes had been elucidated by microanalysis, various spectroscopic techniques like FT-IR, <sup>1</sup>H NMR, <sup>13</sup>C

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23

Mathew, Bijo, Githa Mathew, Jerad Suresh, et al. "Psychomotor Seizure Screening and in vitro Neuroprotection Assay of Hydrazones Derived from 2-Acetyl Thiophene." Central Nervous System Agents in Medicinal Chemistry 17, no. 1 (2017): 51–57. http://dx.doi.org/10.2174/1871524915999151028111728.

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24

Bren, Vladimir A., Vladimir I. Minkin, Evgenii N. Shepelenko, Alexander D. Dobonosov, and Arkadii Ya Bushkov. "Photoisomerization of Hydrazones of 2-Acetyl-3-hydroxy-benzo[b]furan and -benzo[b]thiophene." Mendeleev Communications 1, no. 2 (1991): 72–73. http://dx.doi.org/10.1070/mc1991v001n02abeh000044.

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25

Aouniti, A., H. Elmsellem, S. Tighadouini, et al. "Schiff's base derived from 2-acetyl thiophene as corrosion inhibitor of steel in acidic medium." Journal of Taibah University for Science 10, no. 5 (2016): 774–85. http://dx.doi.org/10.1016/j.jtusci.2015.11.008.

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26

Yarovenko, V. N., L. V. Khristoforova, L. I. Belen’kii, N. D. Chuvylkin, and M. M. Krayushkin. "Electronic structure and reactivity of 3-acetyl-2-methylbenzo[b]thiophene: a quantum chemical study." Russian Chemical Bulletin 60, no. 11 (2011): 2315–19. http://dx.doi.org/10.1007/s11172-011-0354-x.

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27

Ahmedova, Anife, Vasil Atanasov, Petja Marinova, Neyko Stoyanov, and Mariana Mitewa. "Synthesis, characterization and spectroscopic properties of some 2-substituted 1,3-indandiones and their metal complexes." Open Chemistry 7, no. 3 (2009): 429–38. http://dx.doi.org/10.2478/s11532-009-0039-6.

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AbstractNew 2-acyl-1,3-indandione derivatives, compounds 1–4, were obtained by condensation of 2-acetyl-1,3-indandione with benzaldehyde, thiophene-2-aldehyde, thiophene-3-aldehyde and furane-2-aldehyde, respectively. The structures of the newly synthesized 2-substituted 1,3-indandiones were characterized by means of spectroscopic methods (FT-IR, 1H and 13C NMR, UV-Vis and MS). Based on the obtained results it is suggested that the compounds exist in the exocyclic enolic form. Mass spectral fragmentation paths are also proposed. In order to verify the possibility for tautomerization processes

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28

Yuksek, H., F. Islamoglu, O. Gursoy Kol, S. Bahceci, M. Bekar, and M. Aksoy. "In VirtoAntioxidant Activities of New 4,5-Dihydro-1H,2,4-triazol-5-ones having Thiophene Ring with their Acidic Properties." E-Journal of Chemistry 8, no. 4 (2011): 1734–46. http://dx.doi.org/10.1155/2011/635459.

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Seven new 3-alkyl(aryl)-4-(2-thienymethylenamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones(2)were synthesized by the reactions of 3-alkyl(aryl)-4-amino-4,5-dihydro-1H-1,2,4-triazol-5-ones(1)with thiophene-2-carbaldehyde. In addition,N-acetyl derivatives of compounds2d-2gwere also prepared. The structures of eleven new compounds synthesized were determined by elemental analysis as well as IR, NMR and UV spectral data. In addition, compounds2a-gand3a,3b,3d-fwere also screened for their antioxidant activities and2a-gwere potentiometrically titrated with tetrabutylammonium hydroxide (TBAH) in four nona

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29

Khalil, El-Galil, Moged Berghot, and Mostafa Gouda. "Design, synthesis and antibacterial activity of new phthalazinedione derivatives." Journal of the Serbian Chemical Society 76, no. 3 (2011): 329–39. http://dx.doi.org/10.2298/jsc091122028k.

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Dibenzobarrelene (1) was utilized as the key intermediate for the synthesis of some new 2-substituted (1,4-dioxo-3,4,4e,5,10,10ahexahydro- 1H-5,10-benzeno-benzo[g]phthalazine: 2, 5a-d, 8a-c and 10. Condensation of 2 with benzaldehyde or anisaldehyde gave the corresponding acrylonitrile derivative 3a, b, respectively. Thiophene derivatives 4a, b were obtained via the Gewald reaction of 2 with cyclohexanone or pentanone, respectively. Treatment of 5d with acetyl chloride or p-toluenesulfonyl chloride afforded the corresponding esters 6, 7, respectively. Cyclization of 8a-c with formalin afforded

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R., Parasuraman *. Vardhineedi Shirisha K. Pavan Kumar N. Namitha M. Keerthana N. Prashanth Reddy. "Synthesis, Characterization And Anti-Bacterial Activity Of Novel Chalcone Derivatives." International Journal in Pharmaceutical Sciences 2, no. 5 (2024): 1883–91. https://doi.org/10.5281/zenodo.11403805.

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Chalcones have been a class of important synthetic anti-microbial agents and effectively used in clinic for infectious diseases. In this study, chalcone derivatives of 5(1-Ethyl piperazine 4-yl) 2-Acetyl thiophene and p-Substituted Benzaldehyde have been synthesized          and screened for antibacterial activities. All the synthesized compounds (TP1-TP4) were characterized by spectral studies and evaluated for in-vitro anti-bacterial activity. All the synthesized compounds (TP1-TP4) showed the antibacterial activity against strains of Bacillus sub

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31

de Vasconcelos, Alana, Vinicius Farias Campos, Fernanda Nedel, et al. "Cytotoxic and apoptotic effects of chalcone derivatives of 2-acetyl thiophene on human colon adenocarcinoma cells." Cell Biochemistry and Function 31, no. 4 (2012): 289–97. http://dx.doi.org/10.1002/cbf.2897.

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32

Sulekh, Chandra, and Kumar Anil. "Synthesis and physicochemical studies of MnII, CoII, NiII and Cun complexes with 2-acetyl thiophene thiosemicarbazone (L)." Journal of Indian Chemical Society Vol. 84, April 2007 (2007): 325–28. https://doi.org/10.5281/zenodo.5816784.

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Department of Chemistry, Zakir Husain College, J. L. N. Marg, New Delhi-110 002, India <em>E-mail</em>: schandra_OO@yahoo.com; anil_sharma957@yahoo.com <em>Manuscript received 9 November 2006, revised 6 February 2007, accepted 7 February 2007</em> Mn<sup>II</sup>, Co<sup>II</sup>, N<sup>II</sup> and Cu<sup>II</sup> complexes were synthesized with thiosemlcarbazone (L) derived from 2-acetyl thiophene. These complexes were characterized by elemental analysis, molar conductance, magnetic moment, mass, IR, electronic and EPR spectral studies. The molar conductance measurement of the complexes

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33

Geetha, D., Y. B. Basavaraju, and K. Roopa. "Synthesis and Antimicrobial Activity of Heterocycle based Chalcone Derivatives." Asian Journal of Chemistry 36, no. 6 (2024): 1327–33. http://dx.doi.org/10.14233/ajchem.2024.31591.

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An efficient procedure for the synthesis of novel chalcones containing heterocyclic ring by Claisen-Schmidt condensation of 2-acetyl thiophene with heterocyclic carboxaldehyde, substituted benzaldehyde in the presence of aqueous alkaline bases produced chalcones in good yield (3a-f) is developed. These chalcones undergoes hydroamination with N-protected N-Boc piperazine followed by deprotection with trifluoroacetic acid gives corresponding amino derivatives with good yield (7a-f). The synthesized compounds were characterized by melting point, FTIR, 1H & 13C NMR and MS spectroscopic data. T

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34

Sulekh, Chandra, and Kumar Anil. "Spectral and physicochemical studies of Ni11 complexes with some nitrogenoxygen and nitrogen-sulphur donor ligands." Journal of Indian Chemical Society Vol. 84, Jan 2007 (2007): 55–58. https://doi.org/10.5281/zenodo.5810349.

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Department of Chemistry, Zakir Husain College, J. L. N. Marg, New Delhi-110 002, India <em>E-mail</em> : schandra_OO@yahoo.com, anil_sharma957@yahoo.com <em>Manuscript received 30 August 2006, accepted 3 November 2006</em> Ni<sup>II</sup> complexes are synthesized with thiosemicarbazones (L<sup>1</sup>, L<sup>3</sup> and L<sup>5</sup>) and semicarbazones (L<sup>2</sup>, L<sup>4</sup> and L<sup>6</sup>) derived from pyrrole-2-carboxyaldchyde, 2-acetyl furan and 2-acetyl thiophene. These complexes are characterized by elemental analysis, molar conductance, magnetic susceptibility measurements, m

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35

Usman, Rabia, Arshad Khan, Moamen S. Refat, and Nongyue He. "Synthesis and crystal structure of the novel chiral acetyl-3-thiophene-5-(9-anthryl)-2-pyrazoline, C23H18N2OS." Zeitschrift für Kristallographie - New Crystal Structures 236, no. 4 (2021): 867–69. http://dx.doi.org/10.1515/ncrs-2021-0127.

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36

Shulgau, Zarina, Irina Palamarchuk, Shynggys Sergazy та ін. "Synthesis, Computational Study, and In Vitro α-Glucosidase Inhibitory Action of Thiourea Derivatives Based on 3-Aminopyridin-2(1H)-Ones". Molecules 29, № 15 (2024): 3627. http://dx.doi.org/10.3390/molecules29153627.

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Reactions with allyl-, acetyl-, and phenylisothiocyanate have been studied on the basis of 3-amino-4,6-dimethylpyridine-2(1H)-one, 3-amino-4-phenylpyridine-2-one, and 3-amino-4-(thiophene-2-yl)pyridine-2(1H)-one (benzoyl-)isothiocyanates, and the corresponding thioureide derivatives 8-11a-c were obtained. Twelve thiourea derivatives were obtained and studied for their anti-diabetic activity against the enzyme α-glucosidase in comparison with the standard drug acarbose. The comparison drug acarbose inhibits the activity of α-glucosidase at a concentration of 15 mM by 46.1% (IC50 for acarbose is

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37

Bren, Vladimir A., Alexander D. Dubonosov, Lidiya L. Popova, et al. "Photochromic properties of 2-(N-acetyl-N-arylaminomethylene)benzo[b]furan-, thiophene-, selenophene- and tellurophene-3(2H)-ones." Arkivoc 2005, no. 7 (2005): 60–66. http://dx.doi.org/10.3998/ark.5550190.0006.707.

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38

Suganya, M., and G. Puthilibai. "Synthesis, Spectral Characterization, Antibacterial and Anticancer Evaluation of Novel Isoniazid based Schiff Base Ligand derived Transition Metal Complexes." Asian Journal of Chemistry 36, no. 3 (2024): 579–85. http://dx.doi.org/10.14233/ajchem.2024.30955.

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A novel isoniazid based Schiff base ligand was synthesized by the condensation of 5-acetyl-N-(adamantan-2-yl)thiophene-2-carboxamide (1 mmol) and isoniazid (1 mmol). Metal complexes were prepared by reacting the Schiff base with metal(II) chloride (M = Ni2+, Cu2+ and Co2+), formed the novel metal coordination compound. The synthesized ligand and metal complexes were characterized by 1H NMR, mass spectral, UV-visible, IR & EPR spectral studies, themogravimetric analysis, cyclic voltametry and were screened with both Gram-positive and Gram-negative bacterias to evaluate the antibacterial act

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39

Nyawade, Eunice A., Nicole R. S. Sibuyi, Mervin Meyer, Roger Lalancette, and Martin O. Onani. "Synthesis, characterization and anticancer activity of new 2-acetyl-5-methyl thiophene and cinnamaldehyde thiosemicarbazones and their palladium(II) complexes." Inorganica Chimica Acta 515 (January 2021): 120036. http://dx.doi.org/10.1016/j.ica.2020.120036.

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Li, Ping, Xian-Xian Ji, Ming-Yao Xu, Yu-Long Liu, and Liu Yang. "A Multifunctional Fluorescent Probe Based on 1,8-naphthalimide for the Detection of Co2+, F−, and CN−." Inorganics 11, no. 7 (2023): 265. http://dx.doi.org/10.3390/inorganics11070265.

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Cations and anions are indispensable resources for the development of nature and modern industry and agriculture, and exploring more efficient technology to monitor them is urgently needed. A multifunctional fluorescent probe based on 1,8-naphthalimide, N-(2-thiophenhydrazide)acetyl-4-morpholine-1,8-naphthalimide (TMN), was successfully designed and synthesized for the detection of Co2+, F−, and CN−, with N-carboxymethyl-4-morpholine-1,8-naphthalimide and thiophene-2-carbohydrazide as starting materials. TMN displayed superior stability in MeCN with an “on–off” mode towards Co2+, F−, and CN− b

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41

Wu, Chengde, E. Radford Decker, Natalie Blok, et al. "Discovery, Modeling, and Human Pharmacokinetics ofN-(2-Acetyl-4,6-dimethylphenyl)-3-(3,4-dimethylisoxazol-5-ylsulfamoyl)thiophene-2-carboxamide (TBC3711), a Second Generation, ETASelective, and Orally Bioavailable Endothelin Antagonist1." Journal of Medicinal Chemistry 47, no. 8 (2004): 1969–86. http://dx.doi.org/10.1021/jm030528p.

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Shepelenko, E. N., A. D. Dubonosov, V. A. Bren', L. M. Sitkina, A. �. Lyubarskaya, and V. I. Minkin. "Benzenoid-quinoid tautomerism of azomethines and their structural analogs. 43. Phenylmercury derivatives of 3-hydroxy-2-acetyl(benzoyl)benzo[b]thiophene and 3-hydroxy-1-methylindole-2-carbaldehyde imines." Chemistry of Heterocyclic Compounds 25, no. 5 (1989): 494–97. http://dx.doi.org/10.1007/bf00482490.

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Şen, Betül, Hatice Kübra Kalhan, Volkan Demir, Egemen Erdem Güler, Hülya Ayar Kayalı, and Elif Subaşı. "Crystal structures, spectroscopic properties of new cobalt(II), nickel(II), zinc(II) and palladium(II) complexes derived from 2-acetyl-5-chloro thiophene thiosemicarbazone: Anticancer evaluation." Materials Science and Engineering: C 98 (May 2019): 550–59. http://dx.doi.org/10.1016/j.msec.2018.12.080.

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ŞEN, Betül. "2-Acetyl-5-chloro-thiophene thiosemicarbazone and its nickel(II) and zinc(II) complexes: Hirshfeld surface analysis and Density Functional Theory calculations for molecular geometry, vibrational spectra and HOMO-LUMO studies." Turkish Computational and Theoretical Chemistry 5, no. 1 (2021): 27–38. http://dx.doi.org/10.33435/tcandtc.843329.

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Kaliraj, S., and Muthu K. Kathiravan. "Synthesis and Cytotoxic Evaluation of Novel Benzimidazole Fused Condensed Thienopyrimdines Derivatives." Current Bioactive Compounds 16, no. 2 (2020): 133–41. http://dx.doi.org/10.2174/1573407214666180808124802.

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Background: Cancer is a major health problem acting as a global killer and one of the leading causes of death. Most cancer chemotherapeutic drugs currently in clinical use are to kill malignant tumour cells by inhibiting some of the mechanisms implied in cellular division. Thienopyrimidines occupy a special position among the fused pyrimidines, along with other pyrimidines containing an annelated five membered hetero aromatic ring; forms a significant class of drugs which exhibit an array of various biological activities. One of the important current anticancer agent gefitinib acts as tyrosine

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46

Debray, Julien, Florence Popowycz, and Marc Lemaire. "Straightforward Synthesis of 2-Acetyl-Substituted Benzo[b]thiophenes." Synlett 24, no. 01 (2012): 37–40. http://dx.doi.org/10.1055/s-0032-1317674.

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Noto, Renato, Michelangelo Gruttadauria, Paolo Lo Meo, and Domenico Spinelli. "Protonation of Some 5-Substituted Di(2-thienyl) Ketones in Sulfuric Acid. A Comparison with Other 2-Thienyl and Phenyl Ketones." Collection of Czechoslovak Chemical Communications 64, no. 11 (1999): 1893–901. http://dx.doi.org/10.1135/cccc19991893.

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Protonation equilibria of some 5-substituted di(2-thienyl) ketones have been investigated spectrophotometrically in aqueous solutions of sulfuric acid at 298 K. The experimental pKBH+ values have been analyzed by means of the Hammett equation. The calculated ρ as well as the pKBH+ and m* values have been compared with those for substituted 2-acetyl- thiophenes and phenyl 2-thienyl ketones.

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48

Debray, Julien, Marc Lemaire, and Florence Popowycz. "ChemInform Abstract: Straightforward Synthesis of 2-Acetyl-Substituted Benzo[b]thiophenes." ChemInform 44, no. 18 (2013): no. http://dx.doi.org/10.1002/chin.201318083.

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Rodrigues, Daniel N. S., Paulo R. Olivato, Patrick R. Batista, Lucas C. Ducati, and Maurizio Dal Colle. "Spectroscopic and theoretical studies of some 2-(2′-ethylsulfanyl)acetyl-5-substituted furans and thiophenes." Journal of Molecular Structure 1261 (August 2022): 132895. http://dx.doi.org/10.1016/j.molstruc.2022.132895.

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Konovalenko, Artem, Oleh Shablykin, Olga Shablykina, Andrii Kozytskyi, and Volodymyr Brovarets. "Convenient and versatile method of 8-amino-6-(2-R-thiazol-4-yl)-1,7-naphthyridines synthesis." Current Chemistry Letters 13, no. 1 (2024): 163–72. http://dx.doi.org/10.5267/j.ccl.2023.7.004.

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On the base of 3-formylpicolinic acid by two successive heterocyclizations (the formation of a pyrone fragment by the cyclization of chloroacetone with the carboxyl and formyl groups; and the construction of the thiazole cycle through the bromination of the acetyl fragment and following interaction with thioamides), 6-(2-(phenyl/thiophen-2-yl)thiazole-4-yl)-8H-pyrano[3,4-b]pyridin-8-ones were obtained; and then the pyrone fragment was converted to pyridone by the action of ammonia under high pressure. When such 6-(2-R-thiazol-4-yl)-1,7-naphthyridin-8(7H)-ones reacted with triflic anhydride, O-

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