Autor: Christuraj, P. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Synthesis and spectral correlation studies of some substituted (E)-1-Benzylidene-2-(diphenylmethylene) hydrazines
Autorzy:: Arulkumaran, R.
Manikandan, V.
Christuraj, P.
Thirunarayanan, G.
Powiązania:: https://bibliotekanauki.pl/articles/1182844.pdf
Data publikacji:: 2017
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: (e)-1-benzylidene-2-(diphenylmethylene) hydrazine
ir and nmr spectra
hammett correlations
Opis:: About ten substituted (E)-1-Benzylidene-2-(diphenylmethylene) hydrazine compounds have been synthesized. They are characterized by their analytical, ultraviolet, infrared and NMR spectral data. From infrared spectra, the CN and N+N vibrational frequencies (cm-1) of the hydrazines have been assigned. From NMR spectra, the chemical shifts (, ppm) of CH proton and C(C6H5)2 carbons of the hydrazines have been assigned. These data are correlated with Hammett substituent constants, F and R parameters using single and multi-linear regression analysis. From the results of statistical analysis, the effect of substituents on the spectral data have been discussed.
Źródło:: World Scientific News; 2017, 62; 93-110
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Synthesis and Hammett spectral QSAR analysis of some (E)-1-(4-methoxyphenyl)-3-phenylprop-2-en-1-ones
Autorzy:: Vijayakumar, S.
Manikandan, V.
Arulkumaran, R.
Christuraj, P.
Sundararajan, R.
Thirunarayanan, G.
Powiązania:: https://bibliotekanauki.pl/articles/1076503.pdf
Data publikacji:: 2019
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: (E)-1-(4-methoxyphenyl)-3-phenylprop-2-en-1-ones
IR
NMR spectra
QSAR study
UV
regression analysis
Opis:: About nine substituted (E)-1-(4-methoxyphenyl)-3-phenylprop-2-en-1-ones have been synthesized by solvent-free method. These enones were analyzed by spectral techniques. The characteristic spectral frequencies were correlated through Hammett equation with Hammett substituent constants, F and R parameters using single and multi-regression analysis method. From the statistical analysis results, the quantitative structure activity relationships have been discussed by means of effects of substituents on the spectral frequencies.
Źródło:: World Scientific News; 2019, 115; 52-67
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Synthesis and effects of substituent on (E)-styryl-3-methyl-2-thienyl chalcones
Autorzy:: Christuraj, P.
Geetha, C.
Vanangamudi, G.
Arulkumaran, R.
Manikandan, V.
Rajakumar, P. R.
Thirunarayanan, G.
Powiązania:: https://bibliotekanauki.pl/articles/1161056.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: (E)-3-(3-methylthiophen-2-yl)-1-phenylprop-2-en-1-ones
FT-IR & NMR spectra
Fly-ash:H3PO4 nanocatalyst
Hammett correlation analysis
Substituent effects
UV
solvent-free synthesis
Opis:: Series of eleven substituted of (E)-3-(3-methylthiophen-2-yl)-1-phenylprop-2-en-1-ones compounds by cross-aldol condensation reaction of 3-methylthiophene-2-carbaldehyde with various substituted acetaldehyde in the occurrence of Fly-Ash: H3PO4 catalyst. The effect of catalytic activity of this fly-ash:H3PO4 nanocatalyst was studied with the obtained yield of products under solvent-free conditions. The synthesized substituted (E)-3-(3-methylthiophen-2-yl)-1-phenylprop-2-en-1-one compounds was characterized by physical constants, UV, FT-IR, 1H & 13C-NMR spectral data. The infrared group frequencies of ʋ(cm-1) of COs-cis & s-trans, CHip and CHop, CH=CHop, >C=C
Źródło:: World Scientific News; 2018, 112; 55-73
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Synthesis and spectral Hammett correlation analysis of some (E)-3-(5-bromothiophen-2-yl)-1-phenylprop-2-en-1-one compounds
Autorzy:: Christuraj, P.
Rajakumar, P. R.
Geetha, C.
Vanangamudi, G.
Arulkumran, R.
Manikandan, V.
Sundararajan, R.
Thirunarayanan, G.
Powiązania:: https://bibliotekanauki.pl/articles/1179576.pdf
Data publikacji:: 2017
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: (E)-3-(5-bromothiophen-2-yl)-1-phenylprop-2-en-1-ones
FT-IR and NMR spectra
Hammett correlation analysis
Substituent constants
Substituent effects
UV
Opis:: A series of substituted of (E)-3-(5-bromothiophen-2-yl)-1-phenylprop-2-en-1-one compounds by cross-aldol condensation reaction of 5-bromothiophene-2-carbaldehyde with various substituted acetaldehyde in the presence sodium hydroxide (base). The synthesized substituted (E)-3-(5-bromothiophen-2-yl)-1-phenylprop-2-en-1-one compounds was characterized by physical constants, UV, FT-IR, 1H & 13C-NMR spectral data. The group frequencies of infrared ʋ(cm-1) of CO s-cis and s-trans, CH in-plane and out of plane, CH=CH out of plane, >C=C< out of plane modes, NMR chemical shifts δ (ppm) of Hα, Hβ, CO, Cα and Cβ of these chalcones were correlated with Hammett substituent constants, F and R parameters using single and multi-regression analyses.
Źródło:: World Scientific News; 2017, 74; 15-35
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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