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Journal articles on the topic 'Thiophen'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 January 2023

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1

Zhang, Shimiao, Dong Hwan Son, Rahmatia Fitri Binti Nasrun, Sabrina Aufar Salma, Hongsuk Suh, and Joo Hyun Kim. "Medium Bandgap Polymers for Efficient Non-Fullerene Polymer Solar Cells—An In-Depth Study of Structural Diversity of Polymer Structure." International Journal of Molecular Sciences 24, no. 1 (2022): 522. http://dx.doi.org/10.3390/ijms24010522.

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A series of medium bandgap polymer donors, named poly(1-(5-(4,8-bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo [1,2-b:4,5-b′]dithiophen-2-yl)thiophen-2-yl)-5-((4,5-dihexylthiophen-2-yl)methylene)-3-(thiophen-2-yl)-4H-cyclopenta[c]thiophene-4,6(5H)-dione) (IND-T-BDTF), poly(1-(5-(4,8-bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo [1,2-b:4,5-b′]dithiophen-2-yl)-4-hexylthiophen-2-yl)-5-((4,5-dihexylthiophen-2-yl)methylene)-3-(4-hexylthiophen-2-yl)-4H-cyclopenta[c]thiophene-4,6(5H)-dione (IND-HT-BDTF), and poly(1-(5-(4,8-bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo [1,2-b:4,5-b′]dithiophen

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2

Wang, Qing Xiu, Li Jie Duan, Bo Yang Qu, Juan Wang, and Fu De Liu. "Synthesis and Optical/Electrochemical Properties of Conjugated Polymers with Diphenyl and Thiophene in Main Chain." Advanced Materials Research 1035 (October 2014): 497–501. http://dx.doi.org/10.4028/www.scientific.net/amr.1035.497.

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Two thiophene derivatives 4,4'-di (thiophen-2-yl) biphenyl and 4,4'-di (thiophen-2-yl) -2-nitrobiphenyl ,which were used as monomers for preparing poly (4,4'-di (thiophen-2-yl) biphenyl) (DPBT) and poly (4,4'-di (thiophen-2-yl)-2-nitrobiphenyl) (DPNT) by ferric chloride oxidation polymerization, were synthesized via Suzuki reaction with 4,4'-dibromobiphenyl as the raw material. UV-vis absorption spectra, fluorescence spectra, photoluminescence spectra and electrochemical properties of the polymers were recorded and used for calculating the band-gap (Eg), HOMO orbital energy (EHOMO) and LUMO or

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3

Vu Quoc, Trung, Duong Tran Thi Thuy, Thuan Dang Thanh, et al. "Some chalcones derived from thiophene-3-carbaldehyde: synthesis and crystal structures." Acta Crystallographica Section E Crystallographic Communications 75, no. 7 (2019): 957–63. http://dx.doi.org/10.1107/s2056989019007503.

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The synthesis, spectroscopic data and crystal and molecular structures of four 3-(3-phenylprop-1-ene-3-one-1-yl)thiophene derivatives, namely 1-(4-hydroxyphenyl)-3-(thiophen-3-yl)prop-1-en-3-one, C13H10O2S, (1), 1-(4-methoxyphenyl)-3-(thiophen-3-yl)prop-1-en-3-one, C14H12O2S, (2), 1-(4-ethoxyphenyl)-3-(thiophen-3-yl)prop-1-en-3-one, C15H14O2S, (3), and 1-(4-bromophenyl)-3-(thiophen-3-yl)prop-1-en-3-one, C13H9BrOS, (4), are described. The four chalcones have been synthesized by reaction of thiophene-3-carbaldehyde with an acetophenone derivative in an absolute ethanol solution containing potass

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4

Madabhushi, Sridhar, Srinivas Kurva, Vinodkumar Sriramoju, Jagadeesh Babu Nanubolu та Suresh Reddy Cirandur. "Efficient synthesis of polyfunctionalized thiophene-2,3-diones and thiophen-3(2H)-ones using β-oxodithioesters". RSC Advances 5, № 79 (2015): 64797–801. http://dx.doi.org/10.1039/c5ra11629e.

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5

Arrousse, N., Y. Fernine, Nabil Al-Zaqri, et al. "Thiophene derivatives as corrosion inhibitors for 2024-T3 aluminum alloy in hydrochloric acid medium." RSC Advances 12, no. 17 (2022): 10321–35. http://dx.doi.org/10.1039/d2ra00185c.

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Thiophene derivatives: thiophene-2-carbaldehyde oxime (OXM) and 5-(thiophen-2-yl)-1H-tetrazole (TET), were synthesized and characterized. Furthermore, their inhibitory property for AA2024-T3 in 1 M HCl solution was investigated via electrochemical and with theoretical study.

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6

Ryu, Seunghyup, Chaeyoung Yun, Soomin Ryu, Jihae Ahn, Choongik Kim, and Sungyong Seo. "Characterization of [1]Benzothieno[3,2-b]benzothiophene (BTBT) Derivatives with End-Capping Groups as Solution-Processable Organic Semiconductors for Organic Field-Effect Transistors." Coatings 13, no. 1 (2023): 181. http://dx.doi.org/10.3390/coatings13010181.

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Solution-processable [1]benzothieno[3,2-b]benzothiophene (BTBT) derivatives with various end-capping groups, 2-(phenylethynyl)benzo[b]benzo[4,5]thieno[2,3-d]thiophene (Compound 1), 2-octyl-7-(5-(phenylethynyl)thiophen-2-yl)benzo[b]benzo[4,5]thieno[2,3-d]thiophene (Compound 2), and triisopropyl((5-(7-octylbenzo[b]benzo[4,5]thieno[2,3-d]thiophen-2-yl)thiophen-2-yl)ethynyl)silane (Compound 3), have been synthesized and characterized as active layers for organic field-effect transistors (OFETs). Thermal, optical, and electrochemical properties of the newly synthesized compounds were characterized

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7

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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8

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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9

Subbulakshmi, Karanth N., Badiadka Narayana, Hemmige S. Yathirajan, et al. "Dihydrooxazolones and dihydroimidazolones derived from acylglycines: syntheses, molecular structures and supramolecular assembly." Acta Crystallographica Section C Structural Chemistry 71, no. 8 (2015): 742–51. http://dx.doi.org/10.1107/s2053229615013637.

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Syntheses and structures are described for some alkylidene-substituted dihydrooxazolones and dihydroimidazoles derived from simple acylglycines. A second, triclinic, polymorph of 4-benzylidene-2-(4-methylphenyl)-1,3-oxazol-5(4H)-one, C17H13NO2, (I), has been identified and the structure of 2-methyl-4-[(thiophen-2-yl)methylidene]-1,3-oxazol-5(4H)-one, C9H7NO2S, (II), has been rerefined taking into account the orientational disorder of the thienyl group in each of the two independent molecules. The reactions of phenylhydrazine with 2-phenyl-4-[(thiophen-2-yl)methylidene]-1,3-oxazol-5(4H)-one or

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10

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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11

Rucins, Martins, Karlis Pajuste, Aiva Plotniece, et al. "Synthesis and Characterisation of 1,1′-{[3,5-Bis(dodecyloxy-carbonyl)-4-(thiophen-3-yl)-1,4-dihydropyridine-2,6-diyl]bis-(methylene)}bis(pyridin-1-ium) Dibromide." Molbank 2022, no. 1 (2021): M1311. http://dx.doi.org/10.3390/m1311.

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In the present work, construction of double-charged cationic amphiphilic 1,1′-{[3,5-bis(dodecyl¬oxy-carbonyl)-4-(thiophen-3-yl)-1,4-dihydropyridine-2,6-diyl]bis-(methylene)}bis(pyridin-1-ium) dibromide (7) was performed in four steps. Dodecyl 3-oxobutanoate (1) was condensed with thiophene-3-carbaldehyde (2) which was necessary for Hantzsch cyclisation dodecyl (E/Z)-3-oxo-2-(thiophen-3-ylmethylene)butanoate (3). Two-component Hantzsch type cyclisation of dodecyl (E/Z)-3-aminobut-2-enoate (4) and dodecyl (E/Z)-3-oxo-2-(thiophen-3-ylmethylene)butanoate (3) gave 3,5-bis(dodecyloxycarbonyl)-2,6-di

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12

Salbeck, Josef, and Erhard Günther. "Elektrochemische und spektroelektrochemische Untersuchungen neuer S-heterochinoider Elektronenakzeptoren, N-Cyanimin-substituierte Thieno[3,2-b]thiophen-2,5-dione / Electrochemical and Spectroelectrochemical Investigations of New S-Heteroquinoid Electron Acceptors, N-Cyanimine Substituted Thieno[3,2-b]thiophene-2,5-diones." Zeitschrift für Naturforschung B 46, no. 3 (1991): 353–60. http://dx.doi.org/10.1515/znb-1991-0315.

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13

Zhang, Guobing, Yanrong Dai, Kuychan Song, et al. "Bis(2-oxo-7-azaindolin-3-ylidene)benzodifuran-dione-based donor–acceptor polymers for high-performance n-type field-effect transistors." Polymer Chemistry 8, no. 15 (2017): 2381–89. http://dx.doi.org/10.1039/c7py00295e.

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14

Chen, Lie, Feiyan Wu, Zhiqiang Deng, et al. "High charge mobility polymers based on a new di(thiophen-2-yl)thieno[3,2-b]thiophene for transistors and solar cells." Polymer Chemistry 6, no. 44 (2015): 7684–92. http://dx.doi.org/10.1039/c5py01208b.

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15

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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16

Vrábel, Viktor, Július Sivý, Peter Šafář, and Štefan Marchalín. "Electronic structure, novel synthesis, and O—H...O and C—H...O interactions in two 6-oxopiperidine-2-carboxylic acid derivatives." Acta Crystallographica Section C Structural Chemistry 70, no. 8 (2014): 817–22. http://dx.doi.org/10.1107/s2053229614016301.

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Molecules of (S)-6-oxo-1-(thiophen-2-ylmethyl)piperidine-2-carboxylic acid, C11H13NO3S, crystallize as single enantiomers in the space groupP21and the thiophene ring is disordered over two positions, while (S)-6-oxo-1-(thiophen-3-ylmethyl)piperidine-2-carboxylic acid, C11H13NO3S, crystallizes as a single enantiomer in the space groupP212121. Their absolute configurations were confirmed by anomalous dispersion effects in diffraction measurements on the crystals. The molecules of each compound are linked by a combination of strong O—H...O hydrogen bonds and weak C—H...O interactions, resulting i

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17

Cherniawski, Benjamin P., Steven A. Lopez, Edmund K. Burnett, et al. "The effect of hexyl side chains on molecular conformations, crystal packing, and charge transport of oligothiophenes." Journal of Materials Chemistry C 5, no. 3 (2017): 582–88. http://dx.doi.org/10.1039/c6tc04612f.

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18

Safonov, A. A. "Study acute toxicity of 4-(R-amino)-5-(thiophen-2-ylmethyl)-4H-1,2,4-triazole-3-thiol in vivo." Farmatsevtychnyi zhurnal, no. 2 (August 14, 2018): 98–101. http://dx.doi.org/10.32352/0367-3057.2.16.06.

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Typically, the system is already known are used as the core for a new substance, which have already proved themselves as potential drugs. So one of these is 1,2,4-triazole ring. The purpose was to study acute toxicity of 4-((R-iden)amino)-5-(thiophen-2-ylmethyl)-4H-1,2,4-triazole-3-thiols and identify possible patterns acute toxicity of the chemical structure of indicators derivatives. In the study of acute contact toxicity was used spreadsheet rapid method for Prozorovsky V. B. Analysis of the results of studies acute toxicity of 1,2,4-triazole derivatives showed that all substanc

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19

Shaik, Baji, Mujeeb Khan, Mohammed Rafi Shaik, Mohammed A. F. Sharaf, Doumbia Sekou та Sang-Gyeong Lee. "A-π-D-π-A-Based Small Molecules for OTFTs Containing Diketopyrrolopyrrole as Acceptor Units". Micromachines 12, № 7 (2021): 817. http://dx.doi.org/10.3390/mi12070817.

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A-π-D-π-A-based small molecules 6,6′-((thiophene-2,5-diylbis(ethyne-2,1-diyl))bis(thiophene-5,2-diyl))bis(2,5-bis(2-ethylhexyl)-3-(thiophen-2-yl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione) (TDPP-T) and 6,6′-(((2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-diyl)bis(ethyne-2,1-diyl))bis(thiophene-5,2-diyl))bis(2,5-bis(2-ethylhexyl)-3-(thiophen-2-yl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione) (TDPP-EDOT) have been designed and synthesized. The diketopyrrolopyrrole acts as an electron acceptor, while the thiophene or 3,4-ethylenedioxythiophene acts as an electron donor. The donor–acceptor groups are

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20

Vu Quoc, Trung, Linh Nguyen Ngoc, Duong Tran Thi Thuy, et al. "Crystal structure of two N′-(1-phenylbenzylidene)-2-(thiophen-3-yl)acetohydrazides." Acta Crystallographica Section E Crystallographic Communications 75, no. 8 (2019): 1090–95. http://dx.doi.org/10.1107/s2056989019008892.

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The synthesis, spectroscopic data, crystal and molecular structures of two N′-(1-phenylbenzylidene)-2-(thiophen-3-yl)acetohydrazides, namely N′-[1-(4-hydroxyphenyl)benzylidene]-2-(thiophen-3-yl)acetohydrazide, C13H10N2O2S, (3a), and N′-[1-(4-methoxyphenyl)benzylidene]-2-(thiophen-3-yl)acetohydrazide, C14H14N2O2S, (3b), are described. Both compounds differ in the substituent at the para position of the phenyl ring: –OH for (3a) and –OCH3 for (3b). In (3a), the thiophene ring is disordered over two orientations with occupancies of 0.762 (3) and 0.238 (3). The configuration about the C=N bond is

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21

Sagar, Belakavadi K., Hemmige S. Yathirajan, Ravindranath S. Rathore, and Christopher Glidewell. "Four closely related N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)benzamides: order versus disorder, and similar molecular conformations but different modes of supramolecular aggregation, with a new disordered refinement of 2-amino-3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophene." Acta Crystallographica Section C Structural Chemistry 74, no. 1 (2018): 45–53. http://dx.doi.org/10.1107/s2053229617017326.

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Four closely related N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)benzamides, bearing different substituents on the benzamide ring, have been synthesized and structurally characterized. In each of N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-3-fluorobenzamide, C22H18FNO2S, (I), N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-4-chlorobenzamide, C22H18ClNO2S, (II), N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-2,6-difluorobenzamide, C22H17F2NO2S, (III), and N-(3-benzoyl-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-2-methoxybenzamide, C23H21NO3S, (IV), the last of which

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22

Wojciechowski, Krzysztof, and Michał Nowacki. "Synthesis of [1]Benzothieno[2,3-b]quinolines via Transition-Metal-Free [3+3] Annulation of Nitroarenes and Benzo[b]thiophen-3-ylacetonitrile or 3-(Phenylsulfonylmethyl)benzo[b]thiophene Carbanions." Synthesis 49, no. 16 (2017): 3794–800. http://dx.doi.org/10.1055/s-0036-1588426.

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Benzo[b]thiophen-3-ylacetonitriles or 3-(phenylsulfonylmethyl)benzo[b]thiophenes react with nitrobenzene derivatives in the presence of potassium tert-butoxide and chlorotrimethylsilane to form, in good yields, 11-cyano- or 11-(phenylsulfonyl)[1]benzothieno[2,3-b]quinolines, respectively.

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Clark, Peter D., Nicholas M. Irvine, and Pratibha Sarkar. "The synthesis of 3H-naphthol[1,8-bc]thiophene derivatives." Canadian Journal of Chemistry 69, no. 6 (1991): 1011–16. http://dx.doi.org/10.1139/v91-148.

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Methods for the synthesis of keto derivatives of the little studied naphtho[1,8-bc]thiophene system have been developed. Using the readily available benzothiophene derivative 6,7-dihydrobenzo[b]thiophen-4(5H)-one 4, a 3-keto-naphtho[1,8-bc]thiophene 14 was synthesized by a tin(IV) chloride catalyzed cyclization of the acid chloride derivative of the saturated acid 13b. The bicyclic ketone 4 was also used to prepare the keto-sulfoxide 7, which was cyclized to the 4-keto-naphtho[1,8-bc]thiophene system 9 in a Pummerer-type rearrangement. Key words: synthesis, organosulfur, naphtho[1,8-bc]thiophe

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24

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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Sweeting, Stephen G., Charlie L. Hall, Jason Potticary, et al. "The solubility and stability of heterocyclic chalcones compared with trans-chalcone." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 76, no. 1 (2020): 13–17. http://dx.doi.org/10.1107/s2052520619015907.

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Heterocyclic chalcones are a recently explored subgroup of chalcones that have sparked interest due to their significant antibacterial and antifungal capabilities. Herein, the structure and solubility of two such compounds, (E)-1-(1H-pyrrol-2-yl)-3-(thiophen-2-yl)prop-2-en-1-one and (E)-3-phenyl-1-(1H-pyrrol-2-yl)prop-2-en-1-one, are assessed. Single crystals of (E)-1-(1H-pyrrol-2-yl)-3-(thiophen-2-yl)prop-2-en-1-one were grown, allowing structural comparisons between the heterocyclic chalcones and (2E)-1,3-diphenylprop-2-en-1-one, trivially known as trans-chalcone. The two heterocyclic chalco

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26

Caracelli, Ignez, Stella H. Maganhi, Hélio A. Stefani, Karina Gueogjian, and Edward R. T. Tiekink. "Crystal structure of 3-[2-(thiophen-3-yl)ethynyl]-2H-chromen-2-one." Acta Crystallographica Section E Crystallographic Communications 71, no. 3 (2015): o154—o155. http://dx.doi.org/10.1107/s2056989015002157.

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In the title compound, C15H8O2S, the coumarin moiety is approximately planar (r.m.s. deviation of the 11 non-H atoms = 0.025 Å) and is slightly inclined with respect to the plane of the thiophen-3-yl ring, forming a dihedral angle of 11.75 (8)°. In the crystal, the three-dimensional architecture features a combination of coumarin–thiophene C—H...π and π–π [inter-centroid distance = 3.6612 (12) Å] interactions.

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27

Wang, Lin, Yu Jiao Xie, Xing Xing Zhang, and Jian She Hu. "Synthesis and Phase Behavior of a New Thiophene Monomer as Nematic Liquid Crystal." Advanced Materials Research 989-994 (July 2014): 185–88. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.185.

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The synthesis of a new liquid crystal thiophene monomer of (E)-4-(6-(3-(thiophen-3-yl)- acryloyloxy) hexyloxy) biphenyl-4’-ethylbenzoate (LC-M) is presented. The chemical structure of this monomer and intermediate compounds was characterized by FT-IR and1H-NMR. The phase behavior was investigated by polarizing optical microscopy and differential scanning calorimetry. LC-M showed nematic threaded and schlieren textures on heating and cooling cycles.

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28

Lahsasni, Siham, Dunya A. M. Al-Hemyari, Hazem A. Ghabbour, et al. "Synthesis, Characterization, and Antibacterial and Anti-Inflammatory Activities of New Pyrimidine and Thiophene Derivatives." Journal of Chemistry 2018 (August 1, 2018): 1–11. http://dx.doi.org/10.1155/2018/8536063.

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Substituted[4,5]thieno[2,3-d]thiazolo[3,2-a]pyrimidin-5-one (3a–b) and pyrimidin-5(6H)-imine (3c–e) were synthesized via reaction of the starting compounds, ethyl 2-amino-substituted[b]thiophene-3-carboxylate (2a–c) and 2-amino-substituted [b]thiophene-3-carbonitrile (2d–f), respectively, with 2-bromothiazole. Synthesis of (bromo-substituted[b]thiophen-2-yl)alkanamide derivatives (4a–e) and thieno[2,3-d][1,3]oxazin-4-imine derivative (5) was accomplished via reaction of the starting compounds with bromoalkyl chloride through nucleophilic substitution; however, for the synthesis of compound 5,

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29

Xiao, Guo Yong, Xiao Li, Hai Jun Chi, Yun Hua Lu, Zhi Zhi Hu, and Jiang Long Yu. "Synthesis and Photophysical Properties of Red-Emitting Iridium （Ⅲ） Complex Bearing Benzothiazole." Advanced Materials Research 399-401 (November 2011): 1131–34. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.1131.

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New red phosphorescent material, (E)-2-(2-(thiophen-2-yl) vinyl)benzothiazole(2THSBT) iridium(III) acetylacetone(acac) complex [(2THSBT)2Ir(acac)] is synthesized from 2-methyl benzothiazole, thiophene-2-carbaldehyde and iridium trichloride anhydrate. The complex is characterized by MS and 1H-NMR. (2THSBT)2Ir(acac) gives a photoluminescence at 687nm, phosphorescent quantum yield: Φ(2THSBT)2Ir(acac)=0.2 and EHOMO = -4.8 eV, ELUMO = -2.6eV, respectively. The complex may be a promising electrophosphorescent material.

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30

Kono, Taro, Ryosuke Sasaki, Hideki Goto, Masatoshi Kakuno, and Yoo Tanabe. "Hetero-Type Benzannulation Leading to Substituted Benzothio-Phenes." Molecules 26, no. 22 (2021): 7008. http://dx.doi.org/10.3390/molecules26227008.

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TiCl4 (or SnCl4)-promoted hetero-type benzannulation reactions using various (2,2-dichlorocyclopropyl)(thiophen-2-yl)methanols proceeded smoothly to produce uniquely substituted 4-chlorobenzothiophenes (five examples). The present approach involves the first distinctive thiophene formation from thiophene cores, in contrast to traditional methods of thiophene formation from benzene cores. The stereocongested (less reactive) Cl position in the obtained 4-chlorobenzothiophenes functioned successfully as the partners of three cross-coupling reactions: (i) a Suzuki–Miyaura cross-couplings using Pd(

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31

Wang, Dai Fu, Hui Gao, Xiao Hong Tan, et al. "Facile Synthesis and Crystal Structure of N-(3-Cyano-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-2,2,2-trifluoroacetamide." Advanced Materials Research 887-888 (February 2014): 661–64. http://dx.doi.org/10.4028/www.scientific.net/amr.887-888.661.

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N-(3-Cyano-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-2,2,2-trifluoroacetamide was synthesized by the acylation reaction of trifluoroacetic anhydride with 2-amino-4,5,6,7-tetrahydro-benzo[b]thiophene-3-carbonitrile, which was prepared via microwave-assisted Gewald reaction with K2CO3 as a heterogeneous solid base catalyst. This protocol presented such advantages as short reaction time, high yield, easy work-up and environmentally benign procedures. The structure of the title compound was confirmed by IR, 1H NMR, MS, elemental analysis and X-ray single-crystal diffraction method. X-Ray diffractio

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32

Macêdo-Fonsêca, J. C., A. A. A. Tino, M. P. A. Silva-Alves, and R. M. Souto-Maior. "Organo-montimorillonites containing a reactive thiophene group for polythiophenes nanocomposites." Cerâmica 62, no. 362 (2016): 133–39. http://dx.doi.org/10.1590/0366-69132016623621965.

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Abstract A sodium montmorillonite clay (Na+MMT) was modified with different contents of a reactive salt derived from thiophene (trimethyl-(2-thiophen-3-yl-ethyl)-ammonium bromide) (TMETA). The thiophene salt in the organoclay (xtioMMT) was oxidatively polymerized in situ, giving rise to montmorillonite clay intercalated with a polythiophene salt (xpoltioMMT). Analysis by Fourier transform infrared spectroscopy shows a difference in organization of the salt inside the clay lamellae, before and after its polymerization. X-ray diffraction indicates that the salts, whether polymeric or not, are ar

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33

Liu, Kai-Hang, Jian-Ming Gu, Xiu-Rong Hu, and Gu-Ping Tang. "Crystal structure of canagliflozin hemihydrate." Acta Crystallographica Section E Crystallographic Communications 72, no. 5 (2016): 734–36. http://dx.doi.org/10.1107/s2056989016006769.

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There are two canagliflozin molecules (AandB) and one water molecule in the asymmetric unit of the title compound, C24H25FO5S·0.5H2O [systematic name: (2S,3R,4R,5S,6R)-2-(3-{[5-(4-fluorophenyl)thiophen-2-yl]methyl}-4-methylphenyl)-6-(hydroxymethyl)-3,4,5,6-tetrahydro-2H-pyran-3,4,5-triol hemihydrate]. The dihedral angles between the methylbenzene and thiophene rings are 115.7 (4) and 111.7 (4)°, while the dihedral angles between the fluorobenzene and thiophene rings are 24.2 (6) and 20.5 (9)° in moleculesAandB, respectively. The hydropyran ring exhibits a chair conformation in both canaglifloz

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34

Safonov, A. A., Т. V. Panasenko, E. G. Knysh, and N. M. Polishchuk. "Antimicrobial and antifungal properties of 4-((R-iden)amino)-5-(thiophen-2-ylmethyl)-4H-1,2,4-triazole-3-thiol." Farmatsevtychnyi zhurnal, no. 2 (February 12, 2019): 96–99. http://dx.doi.org/10.32352/0367-3057.2.15.02.

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For creating a new biologically active compounds are using a system on which already exist medications. One such system is the core of 1,2,4-triazole. The aim of our work was to study the antimicrobial and antifungal activity new 4-((R-iden)amino)-5-(thiophen-2-ylmethyl)-4H-1,2,4-triazole-3-thiols. The study was conducted according to the method of serial dilutions. As a result of studies new synthesized 4-((R-idene)amino)-5-(thiophene-2-ilmetyl)-4H-1,2,4-triazoles-3-thiols exhibit antimicrobial and antifungal activity. The most active compound that exhibits antimicrobial act

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35

Jackson, P. Mark, Christopher J. Moody, and Pritom Shah. "Pyrano[3,4-b]thiophen-5-ones, stable thiophene-2,3-quinodimethaneequivalents." Tetrahedron Letters 29, no. 45 (1988): 5817–20. http://dx.doi.org/10.1016/s0040-4039(00)82201-7.

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36

Dufresne, Stéphane, Marie Bourgeaux, and W. G. Skene. "Diethyl 2,5-bis[(E)-thiophen-2-ylmethyleneamino]thiophene-3,4-dicarboxylate." Acta Crystallographica Section E Structure Reports Online 62, no. 12 (2006): o5602—o5604. http://dx.doi.org/10.1107/s1600536806046915.

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37

Hien, Nguyen, and Duong Quoc Hoan. "Synthesis of some mono and dialkynyl derivatives containing thieno[3,2-b]thiophene ring via Sonogashira alkynylation reaction." Tạp chí Khoa học 14, no. 9 (2019): 85. http://dx.doi.org/10.54607/hcmue.js.14.9.2206(2017).

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The Sonogashira cross-coupling reactions were used to synthesize 5 new monoalkynyl derivatives (10a-e) and 2 dialkynyl derivatives (12a-b) containing thieno[3,2-b]thiophene from monoaryl thieno[3,2-b]thiophen in moderate yield. The procedure was optimized and triphenylphosphine (0.2 eq.), palladium diacetate (0.1 eq), copper (I) iodide (0.2 eq.), THF, iPr2NH were found to be the best in these cases. The structures of the (10a-e) and (12a-b) compounds were elucidated by 1H and 13C NMR and mass spectral analysis.

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38

Haque, Syed A., Dominique N. Cooper, Douglas R. Powell, Ramaiyer Venkatraman, and Md Alamgir Hossain. "N1-(Thiophen-2-ylmethyl)-N3,N3-bis[3-(thiophen-2-ylmethylammonio)propyl]propane-1,3-diammonium hexafluoridosilicate methanol trisolvate." Acta Crystallographica Section E Structure Reports Online 69, no. 12 (2013): o1739—o1740. http://dx.doi.org/10.1107/s1600536813029565.

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In the title compound, C24H40N4S34+·2SiF62−·3CH3OH, the central tertiary amine function is protonated and is connected to three thiophen-2-ylmethylamino-n-propyl groups, forming the arms of a T-shaped cation that has two pockets. Each arm contains one protonated secondary amine function, and each pocket is occupied by one SiF62−anion bondedviatwo N—H...F interactions with the protonated amine group on the middle arm, while two methanol solvent molecules are N—H...O hydrogen-bonded with the other secondary protonated amine groups on the side arms. Weak O—H...O and O—H...F hydrogen bonds between

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39

Gao, Ning, Hai-Kun Luo, Rui-Rui Qin, and Ming-Yang He. "2,3,5,6-Tetrafluoro-1,4-bis({[(thiophen-2-yl)methylidene]amino}methyl)benzene." Acta Crystallographica Section E Structure Reports Online 70, no. 7 (2014): o749. http://dx.doi.org/10.1107/s1600536814012434.

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In the title compound, C18H12F4N2S2, a bis-thiophenyl Schiff base ligand with a perifluorinated aromatic core, the complete molecule is generated by crystallographic inversion symmetry. The thiophene and tetrafluorinated benzene rings are oriented at a dihedral angle of 77.38 (4)°. The crystal structure exhibits C—H...F hydrogen bonds, resulting in supramolecular chains along thec-axis direction.

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40

JALILI, SEIFOLLAH, and ABDOLHAKIM PANGH. "THE EFFECT OF METAL-MOLECULE NANO-CONTACTS WITH DIFFERENT END GROUPS IN MOLECULAR ELECTRONICS." International Journal of Modern Physics B 23, no. 30 (2009): 5657–69. http://dx.doi.org/10.1142/s0217979209054508.

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We investigated the electron transport properties of thiophen-bithiol-based molecular wires through atomic metal–thiophen–metal systems using the first principle methods. Various metal–thiophen–metal atomic systems are constructed with different end atoms (S, Se, and Te). The electron transport of the atomic system is systematically studied by analysis of transmission function, density of states, and current–voltage characteristics of the systems.

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41

Katzsch, Felix, Tobias Gruber, and Edwin Weber. "Crystal structures of functional building blocks derived from bis(benzo[b]thiophen-2-yl)methane." Acta Crystallographica Section C Structural Chemistry 72, no. 9 (2016): 679–84. http://dx.doi.org/10.1107/s2053229616012973.

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The syntheses of three bis(benzo[b]thiophen-2-yl)methane derivatives, namely bis(benzo[b]thiophen-2-yl)methanone, C17H10OS2, (I), 1,1-bis(benzo[b]thiophen-2-yl)-3-(trimethylsilyl)prop-2-yn-1-ol, C22H20OS2Si, (II), and 1,1-bis(benzo[b]thiophen-2-yl)prop-2-yn-1-ol, C19H12OS2, (III), are described and their crystal structures discussed comparatively. The conformation of ketone (I) and the respective analogues are rather similar for most of the compounds compared. This is true for the interplanar angles, the Caryl—Cbridge—Carylangles and the dihedral angles. The best resemblance is found for a bio

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42

Kathrotiya, Haresh G., Sagar P. Gami, and Yogesh T. Naliapara. "An Efficient and Clean Synthesis of Thiophenyl Thiazole Depended Novel Triazolo[4,3-a]Quinoxaline Derivatives." International Letters of Chemistry, Physics and Astronomy 51 (May 2015): 125–34. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.51.125.

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A simple and efficient approach for the synthesis of thiophenyl thiazole based triazolo [4,3-a] quinoxaline derivatives is described. In this methodology, 3-hydrazinyl-N-(4-(thiophen-2-yl) thiazol-2-yl) quinoxalin-2-amine derivatives treated with various aromatic aldehyde to form Schiff base which on treatment with iodobenzene diacetate in dichloromethane at room temperature to furnish title compounds. The synthesized compounds were characterized by 1H NMR, 13C NMR, FT-IR, elemental analysis, and mass spectral data

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43

Kathrotiya, Haresh G., Sagar P. Gami, and Yogesh T. Naliapara. "An Efficient and Clean Synthesis of Thiophenyl Thiazole Depended Novel Triazolo[4,3-<i>a</i>]Quinoxaline Derivatives." International Letters of Chemistry, Physics and Astronomy 51 (May 15, 2015): 125–34. http://dx.doi.org/10.56431/p-flw9zc.

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A simple and efficient approach for the synthesis of thiophenyl thiazole based triazolo [4,3-a] quinoxaline derivatives is described. In this methodology, 3-hydrazinyl-N-(4-(thiophen-2-yl) thiazol-2-yl) quinoxalin-2-amine derivatives treated with various aromatic aldehyde to form Schiff base which on treatment with iodobenzene diacetate in dichloromethane at room temperature to furnish title compounds. The synthesized compounds were characterized by 1H NMR, 13C NMR, FT-IR, elemental analysis, and mass spectral data

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44

Wardakhan, Wagnat Wahba, El-Sayed Nahed Nasser Eid, and Rafat Milad Mohareb. "Synthesis and anti-tumor evaluation of novel hydrazide and hydrazide-hydrazone derivatives." Acta Pharmaceutica 63, no. 1 (2013): 45–57. http://dx.doi.org/10.2478/acph-2013-0004.

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The reaction of cyclopentanone with cyanoacetylhydrazine gave 2-cyano-2-cyclopentylideneacetohydrazide (1). Treatment of compound 1 with elemental sulphur in the presence of triethylamine afforded 2-amino-5,6-dihydro- -4H-cyclopenta[b]thiophene-3-carbohydrazide (2), which in-turn formed the corresponding intermediate diazonium salt. The latter was coupled with either ethyl cyanoacetate or ethyl acetoacetate to form 2-cyano-2-(3-(hydrazinecarbonyl)- 5,6-dihydro-4H-cyclopenta[b]thiophen-2-yl)hydrazono) acetate (3) and ethyl 2-(2-(3-(hydrazinecarbonyl)-5,6-dihydro- 4H-cyclopenta[b]thiophen-2-yl)h

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45

Sonar, Prashant, Samarendra P. Singh, Ting Ting Lin, and Ananth Dodabalapur. "Dithienylbenzothiadiazole-Based Donor-Acceptor Organic Semiconductors and Effect of End Capping Groups on Organic Field Effect Transistor Performance." Australian Journal of Chemistry 66, no. 3 (2013): 370. http://dx.doi.org/10.1071/ch12421.

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Donor-Acceptor-Donor (D-A-D) based conjugated molecules 4,7-bis(5-(4-butoxyphenyl)thiophen-2-yl)benzo[c][1,2,5]thiadiazole (BOP-TBT) and 4,7-bis(5-(4-trifluoromethyl)phenyl)thiophen-2-yl)benzo[c][1,2,5]thiadiazole (TFP-TBT) using thiophene-benzothiadiazole-thiophene central core with trifluoromethyl phenyl and butoxyphenyl end capping groups were designed and synthesised via Suzuki coupling. Optical, electrochemical, thermal, and organic field effect transistor (OFET) device properties of BOP-TBT and TFP-TBT were investigated. Both small molecules possess two absorption bands. Optical band gap

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46

Geiger, David K., H. Cristina Geiger, Leo Williams, and Bruce C. Noll. "2-(Thiophen-2-yl)-1-(thiophen-2-ylmethyl)-1H-benzimidazole." Acta Crystallographica Section E Structure Reports Online 68, no. 2 (2012): o420. http://dx.doi.org/10.1107/s1600536811055103.

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47

Li, Jing Tong, Ran Sheng Liu, Zeng Dian Zhao, and Ru Jun Yu. "Synthesis and Characterization of a Novel Diphenylamine-Thiophene Compound for Blue Organic Light-Emitting Diodes." Advanced Materials Research 893 (February 2014): 747–50. http://dx.doi.org/10.4028/www.scientific.net/amr.893.747.

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Diphenylamine and thiophene compounds are promising materials for organic light-emitting diodes (OLEDs). We report here, the synthesis and optical property of a novel small molecular weight derivative,N4.N4,N4'.N4'-tetrakis (4- (thiophen-2-yl) phenyl)-[1,1'-bipheny-4,4'-diamine (TPPA). The target molecule was synthesized using 4,4'-dibromobiphenyl as the starting material, and the proceeding reactions included bromination, Buchwald and Suzuki coupling reactions. According to the optical characterization of it, the absorption peak and excitation peak is at 351nm and 412 nm, respectively. The lu

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48

Lei, Xiao Long, Xiao Xia Sun, Pei Lin Zhang, and Yu Hu. "The New Synthesis of Quinoxaline Derivatives Monomer." Advanced Materials Research 781-784 (September 2013): 567–70. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.567.

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The monomer of 2,3-di (thiophen-2-yl) quinoxaline (M1) and 2,3-di (thiophen-2-yl) 1,4-pyradiazine (M2) have been synthesized in moderate yields over two steps from readily available starting materials. The π-conjugated Polymer based on 2,3-di (thiophen-2-yl) quinoxaline was synthesized by Electrochemical workstation which was carried out in DCM/ Bu4NBF4 (0.1M) as the solvent/electrolyte couple. The new π-conjugated Polymer can slightly soluble in organic solvents such as methylene chloride and acetonitrile.

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49

Choi, Eunjin, Yuhyeon Jang, Dongil Ho, et al. "Development of Dithieno[3,2-b:2′,3′-d]thiophene (DTT) Derivatives as Solution-Processable Small Molecular Semiconductors for Organic Thin Film Transistors." Coatings 11, no. 10 (2021): 1222. http://dx.doi.org/10.3390/coatings11101222.

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Novel solution-processable dithieno[3,2-d:2′,3′-d]thiophene (DTT) derivatives with alkylated thiophene or alkyl chain substituents, 2,6-bis(5-octylthiophen-2-yl)dithieno[3,2-b:2′,3′-d]thiophene (compound 1), 2,6-bis(5-(2-ethylhexyl)thiophen-2-yl)dithieno[3,2-b:2′,3′-d]thiophene (compound 2), and 2,6-dioctyldithieno[3,2-b:2′,3′-d]thiophene (compound 3), have been synthesized and employed as small molecular organic semiconductors for organic field-effect transistors (OFETs). All compounds exhibited good thermal stability over 290 °C, while different side groups of DTT compounds afforded differen

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50

Kathrotiya, Haresh G., and Yogesh T. Naliapara. "Synthesis of Thiophenyl Thiazole Based Novel Quinoxaline Derivatives." International Letters of Chemistry, Physics and Astronomy 51 (May 2015): 115–24. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.51.115.

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A new series of thiophenyl thiazole based novel quinoxaline derivatives 4a-4t have been synthesized by base catalysed condensation reaction. In which 6-substituted 2,3-dichloroquinoxaline 1a and 4-(thiophen-2-yl) thiazol-2-amine 2b reacted in basic condition to afford intermediate 3c which reacts with various aromatic amine to form final compounds. Easy experimental procedure, high yield, and selectivity are the imperative features of this method. The identity of all the compounds has been established by 1H NMR, 13C NMR, FT-IR, and elemental analysis.

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