Bibliografías temáticas / Alkylated thiazine

Literatura académica sobre el tema "Alkylated thiazine"

Autor: Grafiati
Publicado: 18 de mayo de 2024

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Artículos de revistas sobre el tema "Alkylated thiazine"

1

Ahmed, S. y S. K. Saha. "Electrochemical study of the reaction between progressively alkylated thiazine leucodyes and Fe(III) on a glassy carbon electrode". Canadian Journal of Chemistry 74, n.º 10 (1 de octubre de 1996): 1896–902. http://dx.doi.org/10.1139/v96-213.

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An electrochemical investigation on five progressively alkylated thiazine dyes in the presence of Fe(III) ions is reported. The theory of the catalytic regeneration mechanism involving an electrode reaction followed by a coupled chemical reaction is applied to derive kinetic parameters of homogeneous reaction. The second-order rate constant for the reaction of thiazine leucodyes with Fe(III) ions was found to increase from 0.25 × 104 to 1.6 × 104 dm3 mol−1 s−1 upon monomethylation and to vary from 0.7 × 104 for the dimethyl derivative to 1.4 × 104 dm3mol−1 s−1 for the tetramethyl one. The electron-donating nature as well as the hydrophobic characteristics of the methyl group influence the kinetics of the homogeneous reaction. Key words: cyclic voltammetry, thiazine dyes, ferric ion, catalytic regeneration, kinetics
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2

Chakraborty, Amitabha, Shamsuzzaman Ahamed, Subrata Pal y Swapan K. Saha. "Cyclic Voltammetric Investigations of Thiazine Dyes on Modified Electrodes". ISRN Electrochemistry 2013 (12 de febrero de 2013): 1–7. http://dx.doi.org/10.1155/2013/959128.

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Electrochemical behavior of five progressively alkylated thiazine dyes has been investigated at glassy carbon/montmorillonite and glassy carbon/zeolite electrodes. Quantitative characteristics, associated with the positions of peak potentials (Ea and Ec) and current ratios (ia/ic), are measured with scan rates. The peak current observed in the modified electrodes is dependent on both the porosity and nature and number of sites involved in partitioning the complex into film. The values of diffusion coefficient for different dyes have been calculated from electrochemical data. It is suggested that in clay-modified electrode along with physical diffusion the process of electron hopping seems to be most likely.
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3

Chakraborty, Amitabha, Samsuzzaman Ahmed y Swapan K. Saha. "Electrochemical Studies of Progressively Alkylated Thiazine Dyes on a Glassy Carbon Electrode (GCE) in Water, Ethanol, and Triton X-100 Media†". Journal of Chemical & Engineering Data 55, n.º 5 (13 de mayo de 2010): 1908–13. http://dx.doi.org/10.1021/je9009078.

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4

Fehlhammer, Wolf Peter, Hans Hoffmeister, Uwe Eckert y Christian Robl. "Bor-stabilisierte Carbene, III [3 + 2]-Cycloadditionen an Borio-Nitrilylide / Boron-Stabilized Carbenes, III [3 + 2]-Cycloadditions to Borio Nitrile Ylides". Zeitschrift für Naturforschung B 48, n.º 11 (1 de noviembre de 1993): 1448–60. http://dx.doi.org/10.1515/znb-1993-1102.

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The borio nitrile ylides Li[Ph3B—C =N—CH—R] (R = CO2Et, Tos) react with various dipolarophiles regio- and site-specifically to give boron complexes of carbenoid five-membered heterocycles which have been alkylated in order to accomplish their isolation. Thus, isocyanates and isothiocyanates/trialkyloxonium salts give rise to the imidazoline-2-ylidene complexes 2-5, CS2/Et3O+ to the thiazoline-2-ylidene complex 6 and acetone/Et3O+ to the oxazoline-2-ylidene complexes 7a,b. Aryldiazonium ions are added regiospecifically in the “wrong” orientation that leads to mesoionic 1,2,4-triazolium-3-ato-triphenylborate complexes (11a— e). The spectroscopic properties of the new complexes are discussed. Of (1-phenyl-4 H- 5-carbethoxy-triazolium-3-ato)triphenylborate (11a) an X-ray structure analysis has been carried out.
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5

Ovonramwen, Oluwaseyi Bukky, Bodunde Joseph Owolabi y Amowie Philip Oviawe. "Synthesis of (2Z)-4,6-Diphenyl-N-((2-(Piperidin-1-yl)Ethyl]-2H-1,3-Thiazin-2-Imino Hydrochloride and its Antimicrobial Activities". Asian Journal of Physical and Chemical Sciences, 21 de septiembre de 2019, 1–9. http://dx.doi.org/10.9734/ajopacs/2019/v7i330096.

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Aim: The study aims to synthesize, characterize, and screen (2Z)-4,6-diphenyl-N-((2-(piperidin-1-yl)ethyl]-2H-1,3-thiazin-2-imino hydrochloride for microbial activities. Methodology: A (2Z)-4,6-diphenyl-N-((2-(piperidin-1-yl)ethyl]-2H-1,3-thiazin-2-imino hydrochloride was synthesized via two-steps reaction from chalcone using acetophenone and benzaldehyde, further cyclized with thiourea and later N-alkylated with 1-(2-chloroethyl)piperidine hydrochloride, its purity was tested by thin-layer chromatography (TLC) and characterized by Fourier transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance (NMR) and nuclear magnetic resonance (13C-NMR) and screened against Pseudomonas aeruginosa, Escherichia coli, Bacillus subtilis, methicillin-susceptible Staphylococcus aureus, methicillin-resistant Staphylococcus aureus, and Candida albicans using the standard microbiological method. Results: A golden yellow needle-like crystals (2Z)-4,6-diphenyl-N-((2-(piperidin-1-yl)ethyl]-2H-1,3-thiazin-2-imininium hydrochloride with Rf, 7 EtOAc: 3 Pet (0.75) and MP, 285-287oC was synthesized and the in vitro antimicrobial study of the compound exhibited moderate activities in comparison with standard ciprofloxacin and itraconazole. Conclusion: A new (2Z)-4,6-Diphenyl-N-((2-(piperidin-1-yl)ethyl]-2H-1,3-thiazin-2-imininium hydrochloride was synthesized using Claisen-Schmidt condensation, Michael addition and N-alkylation shows moderate antimicrobial activities against E. coli, B. subtilis, methicillin-susceptible S. aureus, methicillin-resistant S. aureus and C. albicans.
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6

Liu, Yufa, Junwei Liu y Xiuming Liu. "Reaction of 2-thiazolidinethione with halohydrocarbon: synthesis of novel N-alkylated 2-thiazolidinethione and S-alkylated thiazoline derivatives". Heterocyclic Communications 16, n.º 4-6 (1 de enero de 2010). http://dx.doi.org/10.1515/hc.2010.015.

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7

Kaddouri, Yassine, Farid Abrigach, Sabir Ouahhoud, Redouane Benabbes, Mohamed El Kodadi, Ali Alsalme, Nabil Al-Zaqri, Ismail Warad y Rachid Touzani. "Mono-Alkylated Ligands Based on Pyrazole and Triazole Derivatives Tested Against Fusarium oxysporum f. sp. albedinis: Synthesis, Characterization, DFT, and Phytase Binding Site Identification Using Blind Docking/Virtual Screening for Potent Fophy Inhibitors". Frontiers in Chemistry 8 (11 de diciembre de 2020). http://dx.doi.org/10.3389/fchem.2020.559262.

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Twelve recent compounds, incorporating several heterocyclic moieties such as pyrazole, thiazole, triazole, and benzotriazole, made in excellent yield up to 37–99.6%. They were tested against Fusarium oxysporum f. sp. albedinis fungi (Bayoud disease), where the best results are for compounds 2, 4, and 5 with IC50 = 18.8–54.4 μg/mL. Density functional theory (DFT) study presented their molecular reactivity, while the docking simulations to describe the synergies between the trained compounds of dataset containing all the tested compounds (57 molecules) and F. oxysporum phytase domain (Fophy) enzyme as biological target. By comparing the results of the docking studies for the Fophy protein, it is found that compound 5 has the best affinity followed by compounds 2 and 4, so there is good agreement with the experimental results where their IC50 values are in the following order: 74.28 (5) < 150 (2) < 214.10 (4), using Blind docking/virtual screening of the homology modeled protein and two different tools as Autodock Vina and Dockthor web tool that gave us predicted sites for further antifungal drug design.
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Tesis sobre el tema "Alkylated thiazine"

1

Pal, Subrata. "Studies on physico - chemical characteristics of progressively alkylated thiazine dyes and their interaction with montmorillonite". Thesis, University of North Bengal, 1992. http://hdl.handle.net/123456789/715.

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Actas de conferencias sobre el tema "Alkylated thiazine"

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Al-Jamal, Mazin H., Naeemah Al-Lami y Ruqia M. Al-Azy. "Synthesis of new S, N, O-alkylated benzo [d] imidazo [2,1-b]thiazole and the study of their biological applications". En 2ND INTERNATIONAL CONFERENCE ON MATERIALS ENGINEERING & SCIENCE (IConMEAS 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0000174.

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