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Journal articles on the topic 'Thiourea'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Ngaini, Zainab, Wan Sharifatun Handayani Wan Zulkiplee, and Ainaa Nadiah Abd Halim. "One-Pot Multicomponent Synthesis of Thiourea Derivatives in Cyclotriphosphazenes Moieties." Journal of Chemistry 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/1509129.

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In this study, hexasubstituted thiourea was carried out via reaction of isothiocyanato cyclophosphazene intermediates with a series of aromatics amines and amino acids in a one-pot reaction system. The reaction was not as straightforward as typical thiourea synthesis. Six unexpected thiourea derivatives3a–fwere formed in the presence of cyclotriphosphazene moieties in good yields (53–82%). The structures of3a–fwere characterized by elemental analysis and FTIR,1H,13C, and31P NMR spectroscopies. The occurrence of reverse thioureas formation in a one-pot reaction system is discussed. The possible

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2

Siddharth A. Waghmare and Swapnil B. Sarkate. "Design, synthesis and characterization of some novel Thiocarbamidopyrimidines." International Journal of Science and Research Archive 10, no. 2 (2023): 895–99. http://dx.doi.org/10.30574/ijsra.2023.10.2.1034.

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Interaction of 2 chloro pyrimidines with various substituted thioureas such as thiourea, N- phenylthiourea, 1,3 Dimethylthiourea, N- allylthiourea and ethyl thiourea were carried in presence of isopropanol as a medium. The product isolated in these reactions were characterized on the basis of elemental analysis, chemical characteristics and spectral studies.

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3

Binzet, Gün, Gülten Kavak, Nevzat Külcü, Süheyla Özbey, Ulrich Flörke, and Hakan Arslan. "Synthesis and Characterization of Novel Thiourea Derivatives and Their Nickel and Copper Complexes." Journal of Chemistry 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/536562.

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New benzoyl thiourea derivatives and their nickel and copper complexes were synthesized. The structure of the synthesized compounds were confirmed by elemental analysis, FT-IR, and1H NMR techniques. Four of the synthesized compounds are analyzed by X-ray single crystal diffraction technique. WhereasN,N-dimethyl-N′-(4-fluorobenzoyl)thiourea,N,N-diethyl-N′-(4-fluorobenzoyl)thiourea, andN,N-di-n-butyl-N′-(4-fluorobenzoyl) thiourea crystallize in the monoclinic system,bis(N,N-di-n-propyl-N′-(4-fluorobenzoyl)thioureato) nickel(II) complex crystallizes in the triclinic system. These ligand molecules

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4

Elshaier, Yaseen A. M. M., Ashraf A. Aly, Mohamed Abdel-Aziz, et al. "Synthesis and Identification of New N,N-Disubstituted Thiourea, and Thiazolidinone Scaffolds Based on Quinolone Moiety as Urease Inhibitor." Molecules 27, no. 20 (2022): 7126. http://dx.doi.org/10.3390/molecules27207126.

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Synthesis of thiazolidinone based on quinolone moiety was established starting from 4-hydroxyquinol-2-ones. The strategy started with the reaction of ethyl bromoacetate with 4-hydroxyquinoline to give the corresponding ethyl oxoquinolinyl acetates, which reacted with hydrazine hydrate to afford the hydrazide derivatives. Subsequently, hydrazides reacted with isothiocyanate derivatives to give the corresponding N,N-disubstituted thioureas. Finally, on subjecting the N,N-disubstituted thioureas with dialkyl acetylenedicarboxylates, cyclization occurred, and thiazolidinone derivatives were obtain

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5

Gonçalves, Itamar L., Rafaela R. da Rosa, Vera L. Eifler-Lima, and Aloir A. Merlo. "The use of isoxazoline and isoxazole scaffolding in the design of novel thiourea and amide liquid-crystalline compounds." Beilstein Journal of Organic Chemistry 16 (February 6, 2020): 175–84. http://dx.doi.org/10.3762/bjoc.16.20.

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A series of novel thiourea and amide liquid crystals containing 5-membered isoxazoline and isoxazole rings were synthetized and the liquid crystal properties studied. Thioureas were obtained using a condensation reaction of benzoyl chlorides, arylamines and ammonium thiocyanate. The amides, on the other hand, were the byproduct of a quantitative reaction which used potassium cyanate as the starting material. Thiourea and amide derivatives were predominantly SmA mesophase inductors. A nematic mesophase was observed only for thioureas and amides containing an isoxazole ring. Additionaly, the liq

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6

Chayah, Mariem, M. Encarnación Camacho, M. Dora Carrión, Miguel A. Gallo, Miguel Romero, and Juan Duarte. "N,N′-Disubstituted thiourea and urea derivatives: design, synthesis, docking studies and biological evaluation against nitric oxide synthase." MedChemComm 7, no. 4 (2016): 667–78. http://dx.doi.org/10.1039/c5md00477b.

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7

Rosiak, Damian, Andrzej Okuniewski, and Jarosław Chojnacki. "The influence of the type of halogen substituent and its position on the molecular conformation, intermolecular interactions and crystal packing for a series of 1-benzoyl-3-(halogenophenyl)thioureas." Acta Crystallographica Section C Structural Chemistry 77, no. 1 (2021): 11–19. http://dx.doi.org/10.1107/s2053229620015594.

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By the reaction of benzoyl chloride, potassium isothiocyanate and the appropriate halogenoaniline, i.e. 2/3/4-(bromo/iodo)aniline, we have obtained five new 1-benzoyl-3-(halogenophenyl)thioureas, namely, 1-benzoyl-3-(2-bromophenyl)thiourea and 1-benzoyl-3-(3-bromophenyl)thiourea, C14H11BrN2OS, and 1-benzoyl-3-(2-iodophenyl)thiourea, 1-benzoyl-3-(3-iodophenyl)thiourea and 1-benzoyl-3-(4-iodophenyl)thiourea, C14H11IN2OS. Structural and conformational features of the compounds have been analyzed using X-ray diffraction and theoretical calculations. The novel compounds were characterized by solid-

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8

Al-Riyahee, Ali A. A. "First Row Transition Metal Complexes Derived from N, Nʹ-Substituted Thiourea: Synthesis, Geometrical Structures and Cyclic Voltammetry Probe: A Review". BASRA JOURNAL OF SCIENCE 39, № 1 (2021): 96–118. http://dx.doi.org/10.29072/basjs.202117.

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Thioureas or thiourea derivatives as organosulfur compounds are one of the most widely used ligands in different applications as we are going to discuss it extensively such as in coordination chemistry by involving them to rich sources of N, O and S atoms coordinating through S atom, S and O atoms in benzoyl derivatives or S, O and N atoms in pyridyl hetrocylic benzoyl derivatives. These hard and soft donor sites facilitate the bonding between thiourea free ligand and metal ion through one or more to make ligands behave as mono, bi or multidentate ligands to form huge and stable series of the

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9

Venkatachalam, TK, Elise A. Sudbeck, Chen Mao, and Fatih M. Uckun. "Piperidinylethyl, Phenoxyethyl and Fluoroethyl Bromopyridyl Thiourea Compounds with Potent Anti-HIV Activity." Antiviral Chemistry and Chemotherapy 11, no. 5 (2000): 329–36. http://dx.doi.org/10.1177/095632020001100503.

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Derivatives of piperidinylethyl, phenoxyethyl and fluoroethyl bromopyridyl thioureas were designed and synthesized as non-nucleoside reverse transcriptase inhibitors (NNRTIs) of HIV-1 reverse transcriptase (RT). The anti-HIV activity of these compounds was examined by determining their ability to inhibit the replication of the HIV-1 strain HTLVIIIB in human peripheral blood mononuclear cells. The unsubstituted parent pyridyl thiourea compound N-[2-(1-piperidine)ethyl]-N′-[2-(pyridyl)] thiourea (1) exhibited no anti-HIV activity, even at 100 μM. However, the thiourea derivatives that contain a

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10

Saeed, Aamer, Michael Bolte, Mauricio F. Erben, and Hiram Pérez. "Intermolecular interactions in crystalline 1-(adamantane-1-carbonyl)-3-substituted thioureas with Hirshfeld surface analysis." CrystEngComm 17, no. 39 (2015): 7551–63. http://dx.doi.org/10.1039/c5ce01373a.

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11

N.S. SOLANKI and M.P. SAHU. "Productivity and P-use efficiency of clusterbean (Cyamopsis tetragonoloba) as influenced by bio-regulators and phosphorus." Indian Journal of Agronomy 52, no. 2 (2001): 143–47. http://dx.doi.org/10.59797/ija.v52i2.4911.

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A field experiment was conducted at Bikaner during 1999 and 2000 on sandy soil to study the effect of bio- regulators (thiourea and dimethylsulphoxide) and phosphorus on productivity and P-use efficiency of clusterbean [Cyamopsis tetragonoloba (L.) Taub.]. The study revealed that application of thiourea 5 kgtha in the soil (split), thio- urea 5 kgtha + dimethylsulphoxide 2 kgtha in the soil (split), foliar spray of 500 ppm thiourea and foliar spray of 500 ppm thiourea + 100 ppm dimethylsulphoxide proved effective in improving the growth and yield-attributing param- eters over the control. The

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12

Mojtahedi, Mohammad M., Mohammad R. Saidi, and Mohammad Bolourtchian. "A Novel Method for the Synthesis of Disubstituted Ureas and Thioureas under Microwave Irradiaton." Journal of Chemical Research 23, no. 12 (1999): 710–11. http://dx.doi.org/10.1177/174751989902301213.

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Several symmetrically disubstituted ureas and thioureas are synthesized by heating of urea or thiourea with aromatic amines or phenylhydrazine under environmentally benign conditions without any solvent in a conventional microwave oven.

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13

Andrés, José M., Miriam Ceballos, Alicia Maestro, Isabel Sanz, and Rafael Pedrosa. "Supported bifunctional thioureas as recoverable and reusable catalysts for enantioselective nitro-Michael reactions." Beilstein Journal of Organic Chemistry 12 (April 1, 2016): 628–35. http://dx.doi.org/10.3762/bjoc.12.61.

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The catalytic activity of different supported bifunctional thioureas on sulfonylpolystyrene resins has been studied in the nitro-Michael addition of different nucleophiles to trans-β-nitrostyrene derivatives. The activity of the catalysts depends on the length of the tether linking the chiral thiourea to the polymer. The best results were obtained with the thiourea derived from (L)-valine and 1,6-hexanediamine. The catalysts can be used in only 2 mol % loading, and reused for at least four cycles in neat conditions. The ball milling promoted additions also worked very well.

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14

Qureshi, Farah, Muhammad Yar Khuhawar, Taj Muhammad Jahangir, and Abdul Hamid Channar. "Synthesis and Characterization of Multicolor Luminescent and Thermally Stable Thioureas and Polythioamides." Acta Chimica Slovenica 70, no. 4 (2023): 560–73. http://dx.doi.org/10.17344/acsi.2022.7668.

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Two new polythioamides were prepared through the polycondensation reaction between thiourea monomers and terephthaloyl dichloride, while the thiourea monomers were synthesized by the interaction of aromatic (4,4’-diaminophenylsulfone) or alicyclic (1,2-cyclohexanediamine) diamine with ammonium thiocyanate. The elemental composition of polythioamides was confirmed through CHN microanalysis. The structure and properties of thiourea monomers and polythioamides were determined through proton NMR, UV-Vis, FT-IR spectroscopy, fluorescence, TGA/DTA and SEM. The polythioamides indicated high thermal s

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15

Makhsumov, Abduhamid, Yusubjon Holboyev, Nailya Valeeva, Boburbek Ismailov, and Ibragim Askarov. "Synthesis of 1-nicotinoylo-3-(meta-nitrophenyl)- thiourea derivatives with anti-inflammatory activity." E3S Web of Conferences 434 (2023): 02032. http://dx.doi.org/10.1051/e3sconf/202343402032.

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Thiourea derivatives are used in many industries: medicine, agriculture, engineering, rubber industry, organic synthesis. On their basis, various preparations for the needs of the national economy were obtained. The latest studies of thiourea derivatives, carried out at the present time, are prompted not only by theoretical, but also by practical needs. From this point of view, thiourea derivatives are of undoubted interest in substances with different biological activities. They are widely used in agriculture and have been used as herbicides, fungicides, insecticides, bactericides, dyes, grow

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16

Viana, Gil Mendes, Edézio Ferreira da Cunha-Junior, Paloma Wetler Meireles Carreiros Assumpção, et al. "Synthesis and Structure–Activity Relationship of Thiourea Derivatives Against Leishmania amazonensis." Pharmaceuticals 17, no. 12 (2024): 1573. http://dx.doi.org/10.3390/ph17121573.

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Background: Leishmaniasis, caused by Leishmania protozoa and transmitted by vectors, presents varied clinical manifestations based on parasite species and host immunity. The lack of effective vaccines or treatments has prompted research into new therapies, including thiourea derivatives, which have demonstrated antiprotozoal activities. Methods: We synthesized two series of N,N′-disubstituted thiourea derivatives through the reaction of isothiocyanates with amines. These compounds were evaluated in vitro against promastigote and amastigote forms of L. amazonensis, alongside cytotoxicity assess

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17

(MRS.), M. J. KULKARNI, and MADHA VA RAO B. "Stoichiometry and Kinetic Studies of Oxidation of structurally related Organic Substrates, viz. Thiourea, N-Phenylthiourea and N,N'-Diphenyl- thiourea with Ammonium Hexanitrato- cerate(IV) in Perchloric Acid Medium." Journal of Indian Chemical Society Vol. 72, Apr 1995 (1995): 235–44. https://doi.org/10.5281/zenodo.5902183.

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Department of Chemistry, Visvesvaraya Regional College of Engineering, Nagpur-440 011 <em>Manuscript received 27 August 1993, revised 16 November 1993, accepted 2 December 1993</em> In planning optimal analytical conditions through stoichiometry as well as in the study of structure-reactivity correlations of oxidation of thiourea (TU), <em>N</em>-phenylthiourea (<em>N</em>-PTU), N,N'-diphenylthiourea (<em>N</em>,<em>N'</em>-DPTU) with cerium(IV) in perchloric acid medium, systematic spectrophotometric kinetic studies at 295 nm are of paramount importance. Second order rate constants (<

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18

Milosavljevic, Milutin, Ivan Vukicevic, Veis Serifi, et al. "Optimization of the synthesis of N-alkyl and N,N-dialkyl thioureas from waste water containing ammonium thiocyanate." Chemical Industry and Chemical Engineering Quarterly 21, no. 4 (2015): 501–10. http://dx.doi.org/10.2298/ciceq141221006m.

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The optimized methods for N-alkyl and N,N-dialkyl substituted thioureas synthesis starting from ammonium thiocyanates, waste water constituent from the production of tetramethylthiuram monosulfide (TMTS), and alkyl amine, are presented in this work. Therefore, thioureas synthesis was developed in two ways: Method I - reaction of the thiocyanate and alkylamine in the presence of hydrochloric acid; Method II - reaction of the thiocyanate with benzoyl chloride following by amine addition in the first step, and base hydrolysis in the second step. The structure of the synthesized compounds was conf

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19

Sahu, Sandhyamayee, Prangya Rani Sahoo, Sabita Patel, and B. K. Mishra. "Oxidation of thiourea and substituted thioureas: a review." Journal of Sulfur Chemistry 32, no. 2 (2011): 171–97. http://dx.doi.org/10.1080/17415993.2010.550294.

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20

Sahu, Sandhyamayee, Prangya Rani Sahoo, Sabita Patel, and B. K. Mishra. "ChemInform Abstract: Oxidation of Thiourea and Substituted Thioureas." ChemInform 42, no. 46 (2011): no. http://dx.doi.org/10.1002/chin.201146250.

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21

Pitchumani, Venkatachalam, and David W. Lupton. "Studies on Thiourea Catalysed Bromocycloetherification and Bromolactonisations." Australian Journal of Chemistry 73, no. 12 (2020): 1292. http://dx.doi.org/10.1071/ch20184.

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Lewis base catalysed halofunctionalisation reactions of alkenes are well established and allow access to, among others, various oxygen containing heterocycles. By exploiting the known conversion of N-heterocyclic carbenes into the corresponding thioureas it has been possible to prepare and study a range of chiral and non-chiral Lewis base catalysts for such reactions. Although all thiourea catalysts were found to mediate bromocycloetherification and bromolactonisation reactions, they could not be achieved with enantioselectivity.

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22

Slaiman, Qasim J. M., Basim O. Hasan, and Hayder M. Turki. "Performance Of some Corrosion Inhibitors For Carbon Steel In Hydrochloric Acid." Journal of Petroleum Research and Studies 3, no. 1 (2021): 48–68. http://dx.doi.org/10.52716/jprs.v3i1.63.

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Corrosion tests on commercial carbon steel pipe in aerated 0.1N HCl solution under static and flow conditions with ranges of rotation velocity of 400–1400 rpm and temperature of 35 – 60ºC, were carried out by weight loss method, in absence and presence of several inhibitors which were thiourea, ethylenediamine, diethano-lamine and formaldehyde as an adsorption type inhibitors in concentration range 400 – 2000 ppm using rotating cylinder arrangement. The experimental results showed that the corrosion rate in absence and presence of inhibitors is increased with the increasing temperature of the

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23

Erol Günal, Şule, and Engin Kaplan. "SYNTHESIS, EVALUATION OF ANTIFUNGAL ACTIVITY AND DRUG-LIKENESS OF BENZOYL THIOUREA DERIVATIVES." İstanbul Ticaret Üniversitesi Fen Bilimleri Dergisi 24, no. 47 (2025): 217–28. https://doi.org/10.55071/ticaretfbd.1588118.

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Herein, we report the synthesis of a series of 2-bromobenzoyl-substituted thiourea derivatives. The structures of the synthesized thioureas were characterized by spectroscopic methods. These derivatives, together with 2-fluorobenzoyl thioureas synthesized previously, have been evaluated for their potential antifungal activity. Compounds 2d and 2f showed antifungal activity against Candida albicans. Compound 2f also demonstrated activity against C. parapsilosis. Drug-likeness properties of the compounds were also estimated, and it was found that all compounds showed good drug-likeness propertie

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24

Arifoglu, Mustafa, William N. Marmer, and Robert L. Dudley. "Reaction of Thiourea with Hydrogen Peroxide: 13C NMR Studies of an Oxidative/Reductive Bleaching Process." Textile Research Journal 62, no. 2 (1992): 94–100. http://dx.doi.org/10.1177/004051759206200206.

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Thiourea's reaction with hydrogen peroxide in solution under bleaching conditions at three different pH values has been investigated using 13C NMR spectroscopy. Since this reaction is fast and exothermic, it is essential that short total acquisition times be used to accumulate sufficient data to detect different species formed during the reaction. As the abundance of 13C in the reactants in the concentration range studied is very low, 13C-labeled thiourea was used as the starting material. Sufficient data were accumulated in short acquisition times (2–4 minutes) to identify different species f

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25

Butina, Yuliya V., Elena A. Danilova, Maxim V. Dmitriev, and Aleksey V. Solomonov. "CRYSTAL STRUCTURE OF BIS[1-(DIAMINOMETHYLENE)-THIOURON-1-IUM] SULFATE." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 60, no. 1 (2017): 45. http://dx.doi.org/10.6060/tcct.2017601.5483.

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For citation:Butina Yu.V., Danilova E.A., Dmitriev M.V., Solomonov А.V. Crystal structure of bis[1-(diaminomethylene)-thiouron-1-ium] sulfate. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 1. P. 45-49. In this work crystal data of bis[1-(diaminomethylene)-thiouron-1-ium] sulfate is shown. This compound was characterized by IR spectroscopy and elemental analysis. The monocrystal of this compound was obtained and the structure was confirmed by single X-ray analysis. Moreover, the work describes potential application of synthesized compound. Comparative characteristics of thioure

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26

Habila, Tahir, Mebrouk Belghobsi, Mohamed-Zakaria Stiti, et al. "Synthesis and vasodilator activity of 3,4-dihydropyrimidin-2(1H)-ones bearing urea, thiourea, and sulfonylurea moieties." Canadian Journal of Chemistry 97, no. 1 (2019): 20–28. http://dx.doi.org/10.1139/cjc-2018-0239.

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A series of novel 3,4-dihydropyrimidin-2(1H)-ones bearing urea, thiourea, and sulfonylurea moieties were synthesized and pharmacologically evaluated as vasodilator agents. The most interesting vasodilators were the thiourea derivatives 6a and 6b and the urea derivatives 6f–6i and 7f–7h, although the ureas were relatively more active than thioureas. Twenty-fold more active than diazoxide, the urea 6g was the most potent vasodilator (EC50 = 0.983 ± 0.061 μmol/L) and proved to act as a voltage-gated calcium channel blocker. The lack of activity of sulfonylureas, 6k and 7j, could be attributed to

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27

Chrzanowski, Jacek, Luca Sancineto, Malgorzata Deska, Michal Rachwalski, and Jozef Drabowicz. "Thioureas Derived from (S)-1-(2-pyridyl)ethylamine Enantiomer: Synthesis and Selected Applications as an Organocatalyst." Symmetry 17, no. 2 (2025): 216. https://doi.org/10.3390/sym17020216.

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In order to expand the group of chiral thiourea structures, several optically active thioureas derived from the (S)-1-(2-pyridyl)ethylamine enantiomer were prepared via its reaction with achiral or optically active isothiocyanates. To show their synthetic potential as chiral auxiliaries the isolated thioureas were tested as an optically active organocatalyst in the asymmetric version of the selected aldol condensation and addition of diethylzinc to benzaldehyde. The observation of asymmetric induction in these model reactions encourages further research on the use of this group of thioureas in

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28

Gopinath, S., S. Barathan, and R. Rajasekaran. "Comparative Study of Thiourea Metal Complexes Crystals." Advanced Materials Research 584 (October 2012): 112–15. http://dx.doi.org/10.4028/www.scientific.net/amr.584.112.

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Abstract: The thiourea is an interesting inorganic matrix modifier. Recently, researchers are focusing on growing metal complexes of thiourea crystals. Some of the examples are bis thiourea zinc chloride (BTZC) , tetrakis thiourea potassium iodide (TTPI) , tetra thiourea potassium iodide (TTPI) , tetra thiourea cobalt chloride (TTCoC) , bis thiourea cadmium chloride (BTCC) etc., G.Anand et al , S.Gopinath et al and M.Mariappan et al have reported the growth and characterization of metal complexes of urea thiourea. This paper aims to compare the optical , mechanical and thermal properties of th

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29

Schroeder, Zachary W., L. K. Hiscock, and Louise Nicole Dawe. "Copper(II)- and gold(III)-mediated cyclization of a thiourea to a substituted 2-aminobenzothiazole." Acta Crystallographica Section C Structural Chemistry 73, no. 11 (2017): 905–10. http://dx.doi.org/10.1107/s205322961701381x.

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Benzothiazole derivatives are a class of privileged molecules due to their biological activity and pharmaceutical applications. One route to these molecules is via intramolecular cyclization of thioureas to form substituted 2-aminobenzothiazoles, but this often requires harsh conditions or employs expensive metal catalysts. Herein, the copper(II)- and gold(III)-mediated cyclizations of thioureas to substituted 2-aminobenzothiazoles are reported. The single-crystal X-ray structures of the thiourea N-(3-methoxyphenyl)-N′-(pyridin-2-yl)thiourea, C13H13N3OS, and the intermediate metal complexes aq

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30

Jirman, Josef, and Antonín Lyčka. "15N, 13C, and 1H NMR spectra of acylated ureas and thioureas." Collection of Czechoslovak Chemical Communications 52, no. 10 (1987): 2474–81. http://dx.doi.org/10.1135/cccc19872474.

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A series of 1-acylated and 1,3-diacylated (acyl = acetyl or benzoyl) ureas and thioureas have been prepared and their proton-coupled and proton-decoupled 15N, 13C, and 1H NMR spectra have been measured. All the signals have been assigned. The 15N NMR chemical shifts in 1-acylated ureas and thioureas are shifted downfield as compared with δ(15N) of urea and thiourea, resp. This shift is greater for N-1 than for N-3 nitrogen atoms in both the series. When comparing acylureas and acylthioureas it is obvious from the Δδ(15N) differences that the CS group is better than CO group in transferring the

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31

Elokhina, V. N., T. I. Yaroshenko, A. S. Nakhmanovich, and S. V. Amosova. "Reaction of thiourea and substituted thioureas with 1,3-dibromopropyne." Russian Journal of General Chemistry 78, no. 10 (2008): 1949–51. http://dx.doi.org/10.1134/s1070363208100228.

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32

&NA;. "Thiourea." Reactions Weekly &NA;, no. 651 (1997): 11. http://dx.doi.org/10.2165/00128415-199706510-00035.

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33

Wang, Yuan, Xibiao Jin, Lijun He, and Wei Zhang. "Inhibitory effect of thiourea on biological nitrification process and its eliminating method." Water Science and Technology 75, no. 12 (2017): 2900–2907. http://dx.doi.org/10.2166/wst.2017.177.

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Thiourea is a typical nitrification inhibitor that shows a strong inhibitory effect against the biological nitrification process. The 50% inhibitory concentration (IC50) of thiourea on nitrification was determined to be 0.088 mg g VSS−1, and nitrifiers recovered from the thiourea inhibition after it was completely degraded. The thiourea-degrading ability of the sludge system was improved to 3.06 mg gVSS−1 h−1 through cultivation of thiourea-degrading bacteria by stepwise increasing the influent thiourea concentration. The dominant thiourea-degrading bacteria strain that used thiourea as the so

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34

Stefańska, Joanna, Karolina Stępień, Anna Bielenica, Małgorzata Wrzosek, and Marta Struga. "Antistaphylococcal Activity of Selected Thiourea Derivatives." Polish Journal of Microbiology 65, no. 4 (2016): 451–60. http://dx.doi.org/10.5604/17331331.1227671.

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Five of thiourea derivatives were prepared using as a starting compound 3-(trifluoromethyl)aniline, 4-chloro-3-nitroaniline, 1,3-thiazol-2-amine, 2H-1,2,3-triazol-4-amine and commercial isothiocyanates. All compounds were evaluated in vitro for antimicrobial activity. Derivatives 2 and 3 showed the highest inhibition against Gram-positive cocci (standard and hospital strains). The observed MIC values were in the range of 0.5–8 μg/ml. The products effectively inhibited the formation of biofilms of methicillin-resistant and standard strains of Staphylococcus epidermidis. Inhibitory activity of t

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Pratt, Michelle E., and Melanie D. Pratt. "Occupational photoallergic contact dermatitis to thiourea in a firefighter." SAGE Open Medical Case Reports 9 (January 2021): 2050313X2110579. http://dx.doi.org/10.1177/2050313x211057931.

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Thioureas are a relatively uncommon cause of allergic contact dermatitis and a rare cause of photoallergic contact dermatitis. They are primarily used as vulcanization accelerators in the production of neoprene, and common sources of exposure include gloves, shoe insoles, wet suits, and orthopedic braces. We report a multifactorial case of severe episodic photoallergic contact dermatitis to thiourea in a 29-year-old firefighter. Multiple sources of neoprene exposure were identified, including a firefighting mask, continuous positive airway pressure strap, and hockey helmet.

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Athimoolam, S., J. Kumar, V. Ramakrishnan та R. K. Rajaram. "Tetrakis(μ3-thiourea)bis(μ2-thiourea)octakis(thiourea)hexacopper(I) hexakis(perchlorate)". Acta Crystallographica Section E Structure Reports Online 61, № 10 (2005): m2014—m2017. http://dx.doi.org/10.1107/s1600536805028588.

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Tale, Prashant V., and Shirish P. Deshmukh. "Synthesis ofN-lactosylated thiourea and benzothiazolyl thiourea." Heteroatom Chemistry 17, no. 4 (2006): 306–9. http://dx.doi.org/10.1002/hc.20207.

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Baraa H. Latief and Ahmed A. H. Ahmed. "Addition reactions to Schiff,s bases and preparation of new thioureas compounds." Tikrit Journal of Pure Science 21, no. 4 (2023): 73–78. http://dx.doi.org/10.25130/tjps.v21i4.1055.

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During this research a number of thiourease compound by the reaction of some prepared amides (from the reaction of Schiffs, bases with acetyl , chloroacetyl and benzoyl chloride ) with thiourea in the presence of sodium carbonate , the prepared compounds have been characterized by I.R spectroscopy and some of them by 1H-NMR and 13C-NMR and micro analysis (C.H.N.S).

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Journal, Baghdad Science. "Synthesis of New Amide and ThioUrease Compounds." Baghdad Science Journal 4, no. 3 (2007): 430–37. http://dx.doi.org/10.21123/bsj.4.3.430-437.

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The reaction of some new Schiff bases ( 2-[(2-Amino – ethylimino)-methyl]-R , 2-({2-[(R-benzylidene)-amino]-ethylimino}-methyl)-R with Benzoyl chloride or Acetyl chloride were carried out. Subsequent reactions of these products N-(2-Amino-ethyl)-N-[Chloro-(R) –methyl]-benzamide or N-(2-{?-[chloro-(R) –methyl]-amino}-ethyl)-N-[chloro-(R) –methyl]- benzamide with thiourea afforded thioureas compounds. The synthesized compounds were confirmed by their IR,UV,spectra and C.H.N. analysis.

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Zhang, Hai Feng, Shi Xiang Lu, Wen Guo Xu, and Feng Xin Gao. "Microwave-Assisted Synthesis and Photocatalytic Activity of Thiourea-Modified ZnO Nanoparticles." Advanced Materials Research 815 (October 2013): 133–41. http://dx.doi.org/10.4028/www.scientific.net/amr.815.133.

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Thiourea-modified ZnO nanoparticles were prepared by the microwave-assisted method. The nanoparticles were characterized by X-ray diffraction (XRD), High-resolution transmission electron microscope (TEM), UV-Vis absorption spectroscopy (UV-Vis) and X-ray photoelectron spectroscopy (XPS). ZnO nanoparticles presented typical wurtzite structure. Microwave-assisted method and thiourea modifying reduced the particle size of ZnO corporately and the particle size of 2.0 mol% thiourea/ZnO was about 3 nm. The photocatalytic efficiency of thiourea-modified ZnO was influenced by the molar precent between

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Ferro, Daniela, Rosalba Martino, and Giuseppe Della Gatta. "Sublimation enthalpies and entropies of thiourea, 1-methyl-2-thiourea, 1,3-dimethyl-2-thiourea, and 1,1,3,3-tetramethyl-2-thiourea." Journal of Chemical Thermodynamics 26, no. 2 (1994): 183–90. http://dx.doi.org/10.1006/jcht.1994.1037.

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Konrad, Nele, Matvey Horetski, Mariliis Sihtmäe, et al. "Thiourea Organocatalysts as Emerging Chiral Pollutants: En Route to Porphyrin-Based (Chir)Optical Sensing." Chemosensors 9, no. 10 (2021): 278. http://dx.doi.org/10.3390/chemosensors9100278.

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Environmental pollution with chiral organic compounds is an emerging problem requiring innovative sensing methods. Amino-functionalized thioureas, such as 2-(dimethylamino)cyclohexyl-(3,5-bis(trifluoromethyl)phenyl)thiourea (Takemoto’s catalyst), are widely used organocatalysts with virtually unknown environmental safety data. Ecotoxicity studies based on the Vibrio fischeri luminescence inhibition test reveal significant toxicity of Takemoto’s catalyst (EC50 = 7.9 mg/L) and its NH2-substituted analog (EC50 = 7.2–7.4 mg/L). The observed toxic effect was pronounced by the influence of the trifl

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Prabhata, Wimzy Rizqy, Fidya Aulannisa, Muhammad Arif Rizky Nur Rahman, and Shyelivia Thesalonica. "Review Artikel: Strategi Pengembangan Senyawa Thiourea Sebagai Agen Antikanker." Generics: Journal of Research in Pharmacy 2, no. 2 (2022): 127–38. http://dx.doi.org/10.14710/genres.v2i2.15916.

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Thiourea merupakan senyawa penuntun yang memiliki peranan penting dalam pengembangan obat antikanker. Aktivitas biologis senyawa turunan thiourea dalam menghambat pertumbuhan berbagai macam lini sel kanker menjadikan senyawa turunan thiourea memiliki potensi yang sangat besar untuk dikembangkan sebagai agen antikanker. Artikel ini membahas berbagai macam strategi yang dikembangkan dalam desain senyawa turunan thiourea untuk mendapatkan senyawa antikanker yang memiliki aktivitas sitotoksik dan selektivitas yang tinggi. Pencarian literatur dilakukan dengan menggunakan database pubmed dan scopus

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Zhou, Lan, Xiao Yun Liu, Jian Zhong Shao, and Ya Ni Chen. "Study on Thiourea Dioxide’s Reducing Capacity and its Reactivity with Reactive Dyes." Advanced Materials Research 396-398 (November 2011): 1174–79. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.1174.

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In this paper, potential analysis method was applied to study the effects of pH value and temperature on potential and reducing capacity of thiourea dioxide, and the reactivity between thiourea dioxide and reactive dyes as ground shade dyes under simulated printing steaming conditions in aqueous solution was also investigated. The results showed that thiourea dioxide’s reduction potential increased with the rise of pH value and temperature. when temperature was lower than 60 °C, thiourea dioxide had low reactivity with reactive dyes as ground shade dyes, and when temperature was up to 80 °C, t

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Dhaene, Evert, Isabel Van Driessche, Klaartje De Buysser, and Kristof Van Hecke. "Crystal structures of three N,N,N′-trisubstituted thioureas for reactivity-controlled nanocrystal synthesis." Acta Crystallographica Section E Crystallographic Communications 78, no. 2 (2022): 184–90. http://dx.doi.org/10.1107/s2056989022000147.

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The synthesis and single-crystal X-ray structures of three N,N,N′-trisubstituted thioureas are reported, namely N,N,N′-tribenzylthiourea, C22H22N2S (1), N-methyl-N,N′-diphenylthiourea, C14H14N2S (2), and N,N-di-n-butyl-N′-phenylthiourea, C15H24N2S (3). The influence of the different substituents on the thioureas is clear from the delocalization of the thiourea C—N and C=S bonds, while the crystal structures show infinite chains of N,N,N′-tribenzylthiourea (1), hydrogen-bonded pairs of N-methyl-N,N′-diphenylthiourea (2) and hexamer ring assemblies of N,N-di-n-butyl-N′-phenylthiourea (3) molecul

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Guibé, L., A. Péneau, M. Gourdji, and A. Panich. "Thiourea and Thiourea Inclusion Compounds. A14N NQR Investigation." Zeitschrift für Naturforschung A 55, no. 1-2 (2000): 331–34. http://dx.doi.org/10.1515/zna-2000-1-258.

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A reinvestigation of the nitrogen-14 NQR in thiourea has permitted to record, apparently for the first time, the resonances above 169 K. The first order and second order of the transitions at 169 K and 202 K, respectively, appear clearly from the temperature dependence of the resonance frequencies; the modulated structure, incommensurate or commensurate, is also seen on the 14N NQR spectrum. This study is the first step of a new investigation of thiourea and its inclusion compounds.

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Boussaoud, Abdelghani, Gerard Duc, Jean Pierre Meille, and Michelle Petit-Ramel. "Effects of pH, Temperature and Various Anions on Thiourea Disappearance in Aqueous Media with Titanium Dioxide Under UV-Irradiation. Photomineralization Kinetics." Collection of Czechoslovak Chemical Communications 66, no. 4 (2001): 676–84. http://dx.doi.org/10.1135/cccc20010676.

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Disappearance of thiourea in aqueous suspensions of TiO2 or ZnO occurs under near-UV irradiation. The effects of some parameters such as initial concentration of thiourea, temperature, pH and common inorganic anions were examined. The results indicate that the process follows the Langmuir-Hinshelwood type kinetics. In the presence of anions such as nitrates, chlorides and sulfates, the initial disappearance rate of thiourea at pH 6 drops. It is found that the initial rate of thiourea disappearance increases when temperatue of reaction mixture increases. Finally, kinetics of thiourea photominer

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A., Prabumarachen, Ramalingom S., and Chithambarathanu T. "XRD, SHG, HARDNESS, FTIR AND SEM STUDIES OF THIOUREA CRYSTALS DOPED WITH SODIUM CHLORIDE." International Journal of Advanced Trends in Engineering and Technology 3, no. 1 (2018): 31–37. https://doi.org/10.5281/zenodo.1156094.

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Thiourea crystal is sulphur containing nonlinear optical (NLO) material and it has a lot of applications in opto-electronics and laser technology. The properties of thiourea may be altered by adding organic and inorganic dopants into the interstitial positions of thiourea. In this work an inorganic material viz., sodium chloride is added into thiourea to change its physical and chemical properties. Single crystals of sodium chloride doped thiourea were grown by solution method at room temperature. Different concentrations of sodium chloride were added into the host thiourea crystal and hence t

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Todorova, Stanislava E., Rusi I. Rusew, Zhanina S. Petkova, Boris L. Shivachev, and Vanya B. Kurteva. "Novel Thiourea Ligands—Synthesis, Characterization and Preliminary Study on Their Coordination Abilities." Molecules 29, no. 20 (2024): 4906. http://dx.doi.org/10.3390/molecules29204906.

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Two series of polydentate N,O,S-ligands containing thiourea fragments attached to a p-cresol scaffold, unsymmetrical mono-acylated bis-amines and symmetrical bis-thioureas, are obtained by common experiments. It is observed that the reaction output is strongly dependent on both bis-amine and thiocarbamic chloride substituents. The products are characterized by 1D and 2D NMR spectra in solution and by single crystal XRD. A preliminary study on the coordination abilities of selected products is performed by ITC at around neutral media.

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Ullah, Sami, Mohd Shariff Azmi, Muhammad Nadeem, et al. "Synergistic Effect of Thiourea and Surfactants on Corrosion Inhibition of Stainless Steel-410 in Presence of Sulfuric Acid." Applied Mechanics and Materials 699 (November 2014): 186–91. http://dx.doi.org/10.4028/www.scientific.net/amm.699.186.

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The inhibition of corrosion of stainless steel (SS)-410 in sulfuric acid using thiourea and three different surfactants, cetyle trimethyl ammonium bromide (CTAB), sodium dodecyl sulfate (SDS) and X-Triton was studied. Corrosion rates were determined by using corrosion coupons. The corrosion rate was found to be decreased with increase in inhibitor concentration. It was observed that the maximum corrosion inhibition occurred in the post micellar concentration of the surfactants. By optimizing the corrosion inhibition performance of different blends of surfactants and thiourea in 3 M H2SO4,the c

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