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Wyszukujesz frazę "Muthuvel, I." wg kryterium: Autor

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    Wyświetlanie 1-8 z 8
    Tytuł:
    Effect of substituents on 4-(substituted phenyl sulfonamide)benzoic acids by IR and NMR spectra
    Autorzy:
    Muthuvel, I.
    Thirunarayanan, G.
    Dineshkumar, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1059444.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    4-(substituted phenyl sulfonamide) benzoic acids
    Hammett correlations
    IR and NMR spectra
    Regression analysis
    Opis:
    About nine 4-(substituted phenyl sulfonamide) benzoic acid derivatives were synthesized by ultrasound irradiation method. The synthesized sulfonamides were characterized by their physical constants and spectroscopic data. The characteristic infrared SOsym, SOasym, NH and CO vibrations (ν, cm-1), the chemical shifts (δ, ppm) of NH and CO of sulfonamides were assigned and correlated with various Hammett substituent constants and Swain-Lupton parameters using single and multi-regression analysis. From the results of the statistical analysis, the effects of substituents on the spectral frequencies were discussed.
    Źródło:
    World Scientific News; 2019, 128, 2; 216-233
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    FT-IR, 1H and 13C NMR QSAR and molecular docking study on some (E)-2-(2-((aryl)(phenyl)methylene) hydrazinyl)benzo[d]thiazoles
    Autorzy:
    Muthuvel, I.
    Thirunarayanan, G.
    Manikandan, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1066169.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    (E)-2-(2-((aryl)(phenyl)methylene)hydrazinyl)benzo[d]thiazoles
    Docking analysis
    Hammett equation
    IR spectra
    NMR spectra
    QSAR study
    Schiff’s bases
    Opis:
    About six (E)-2-(2-((aryl)(phenyl)methylene)hydrazinyl)benzo[d]thiazoles have been synthesized and characterized by literature data. The infra-red stretching frequencies (ν, cm-1) of NH, CN, C=C and the NMR chemical shifts (δ, ppm) of NH, C=N and ipso carbons were assigned. These spectroscopic data were correlated for studying the QSAR employing Hammett equation with various Hammett substituent constants, Swain-Lupton’s F and R parameters using single and multi-regression analysis. From the results of regression analysis, the QSAR will be predicted by means of effects of substituents on the spectroscopic data of the functional group frequencies. The molecular docking character was evaluated by Schrodinger program, probing analogue docking in Topoisomerase enzymes. The crystallographic enzyme ligand complex (PDB entry 3TTZ) was obtained from the RCSB Protein Data Bank.
    Źródło:
    World Scientific News; 2019, 131; 54-74
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ionic liquid assisted olefin reactions
    Autorzy:
    Thirunarayanan, G.
    Muthuvel, I.
    Sathiyendiran, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1075429.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Ionic liquids
    Metal complexes
    Nano catalysts
    alkene reactions
    olefin reactions
    Opis:
    In this review article the authors studied the ionic liquid assisted various alkene reactions with various metal complex catalysts such as Isomerization, Hydrogenation, Hydroformylation, Metathesis-Oligomerization, Dimerization, Arylation, Cyclization, Polymerization, Epoxidation, Michael addition and Tandem Cross-coupling reactions.
    Źródło:
    World Scientific News; 2019, 126; 36-64
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure parameter correlation of some quinoxaline derivatives through IR and 13C NMR spectra
    Autorzy:
    Thirunarayanan, G.
    Muthuvel, I.
    Sathiyendiran, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/412003.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Quinoxalines
    IR spectra
    NMR spectra
    Hammett Correlation
    substituent effects
    Opis:
    A series of 6-substituted quanoxaline derivatives have been synthesized and examined their purities by literature method. The infrared and 13>/Sup>C NMR spectral data of these quinoxalines were correlated with Hammett substituent constants, F and R parameters using single and multi-regression analysis. From the results of statistical analysis, the effect of substituents on the spectral frequencies has been studied.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 19, 2; 198-207
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Insect antifeedant potent quinoxalines
    Autorzy:
    Lakshmanan, K.
    Sekar, K. G.
    Sathiyendiran, V.
    Muthuvel, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/412501.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    6-substituted aryl qyinoxalines
    leaf-disc bio assay
    Insect antifeedant activity
    Opis:
    Some 6-substituted aryl quinoxalines have been prepared and their purities were checked by their physical constants and spectroscopic data reported earlier. The insect antifeedant activities of these quinolones were studied by leaf-discs bio assay method using 4th instar larvae Achoea Janata L.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2015, 41; 82-87
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    FT-IR and NMR spectral LFER model analysis on some 3-(1-naphthyl)-1-substituted phenyl chalcones
    Autorzy:
    Sekar, K. G.
    Janaki, P.
    Muthuvel, I.
    Sathiyendiran, V.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031827.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    1-Naphthyl styryl ketone
    Aldol condensation
    IR and NMR Spectra
    LFER Model
    Opis:
    In this investigation, the authors predicted the effects of substituents on the functional groups of the titled chalcones using Linear Free Energy Relationship through Hammett equation with its constants and Swain-Lupton parameters. The LFER model statistical analysis was carried out using single and multi-linear regression analysis in MS Office 365 XL package. From the LFER analysis outcome, the influence of substituents on the spectroscopic functionality were discussed with their electronic effects such as, polar, inductive, resonance, field and conjugation. The titled compounds were prepared by solvent-free Aldol-Condensation method. The prepared compounds were characterised by their physical constants, micro analysis and spectroscopic data (FT-IR, NMR and Mass).
    Źródło:
    World Scientific News; 2020, 147; 88-103
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydrothermal fabrication of CeVO4 nanoflowers assisted effective photocatalytic mineralization of aqueous methylene blue solution
    Autorzy:
    Muthuvel, I.
    Jayasri, U.
    Gowthami, K.
    Kumar, N. Dinesh
    Thirunarayanan, G.
    Balakrishnan, K.
    Rajachandrasekar, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031461.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    CeVO4
    Cerium vanadate
    Methylene Blue
    Photocatalyst
    Wastewater treatment
    Opis:
    A tetragonal zircon type cerium vanadate (CeVO4) photocatalyst was successfully synthesized hydrothermal method using Ce(NH4)2(NO3)6 and NH4VO3. The products were characterized using the FT-IR, XRD, FE-SEM and UV-DRS. The XRD results show that crystallite size of cerium vanadate is 27.2 nm. The effect of operational parameters such as effect of pH, catalyst suspension, initial dye concentration and reusability were observed. Hence the catalyst can be reused for continuous treatment of wastewater.
    Źródło:
    World Scientific News; 2020, 142; 103-119
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis, spectral correlation analysis and evaluation of antimicrobial activities of some (E)-1-(2,4-dimethylthiazol-5-yl)-3-phenylprop-2-en-1-ones
    Autorzy:
    Sathiyendiran, V.
    Balaji, S.
    Senbagam, R.
    Vijayakumar, R.
    Manikandan, V.
    Rajarajan, M.
    Muthuvel, I.
    Markandan, R.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031849.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    4-dimethylthiazol enones
    Antimicrobial activities
    Crossed-Aldol condensation
    E-2
    IR and NMR spectra
    Spectral correlation analysis
    Substituent effects
    UV
    Opis:
    In this work, an attempt was made to synthesized (E)-1-(2,4-dimethylthiazol-5-yl)-3-phenylprop-2-en-1-one by cross-aldol condensation reaction of 5′-acetyl-2,4-dimethylthiazole with various substituted Benz aldehyde in the presence base (sodium hydroxide). The synthesized (E)-1-(2,4-dimethylthiazol-5-yl)-3-phenylprop-2-en-1-one derivative was characterized by physical constants, UV, FT-IR, 1H-NMR & 13C-NMR spectral data. All the observed spectral data of substituted (E)-1-(2,4-dimethylthiazol-5-yl)-3-phenylprop-2-en-1-one compounds have been correlated with Hammett substituent constants(σ, σ+, σI & σR) and F and R parameters using single and multi-linear regression analyses and studied for their anti-microbial activities and compared with the standard drugs (Ciprofloxacin). Some compound of the series exhibited promising anti-microbial activity compared to standard drugs (Ciprofloxacin).
    Źródło:
    World Scientific News; 2020, 141; 66-90
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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