Temat: Oxazine amines - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Aryl Chalcones as Efficient Precursors for Deriving Oxazine: Solvent-free Synthesis and Antimicrobial Activities of some Oxazine-2-amines
Autorzy:: Thirunarayanan, G.
Sundararajan, R.
Arulkumaran, R.
Powiązania:: https://bibliotekanauki.pl/articles/411627.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Oxazine amines
Chalcones
fly-ash
H2SO4
Environmentally benign reaction
antimicrobial activities
Opis:: A series of some oxazine derivatives has been synthesised by fly-ash:H2SO4 catalyzed solvent-free cyclization of aryl chalcones and urea under microwave irradiation. The yields of the oxazines were more than 85 %. The synthesised oxazines were characterized by their physical constants, analytical and spectroscopic data. The antimicrobial activities of these oxazines have been studied using Bauer-Kirby method.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 4; 82-97
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Infrared and NMR spectral Hammett correlations in 4-(2-naphthyl)-5,6-dihydro-6-(substituted phenyl)-4H-1,3-oxazine-2-amines
Autorzy:: Thirunarayanan, G.
Pazhamalai, S.
Sekar, K. G.
Powiązania:: https://bibliotekanauki.pl/articles/411654.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Oxazine-2-amines
IR and NMR spectra
Hammett equation
Correlation analysis
Opis:: A series containing ten titled compounds have been synthesised and recorded the IR and NMR spectra. From the spectra the infrared νNH, C=N, C-O-C stretches, NMR chemical shifts of (δ, ppm) NH and C=N were assigned and correlated with Hammett substituent constants, F and R parameters using single regression analysis. From the results, the effects of substituent on the above spectral frequencies were discussed.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 8; 38-46
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: IR and NMR spectral studies of some 4-(6-methoxy-2-naphthyl)-5,6-dihydro-6-(substituted phenyl)-4H-1,3-oxazine-2-amines: Assessment of substituent effects
Autorzy:: Thirunarayanan, G.
Powiązania:: https://bibliotekanauki.pl/articles/412242.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Oxazine-2-amines
IR spectra
NMR spectra
Hammett correlation
Substituent constans
Opis:: A series containing thirteen title compounds were synthesized and recorded IR and NMR spectra. The infrared νNH, C=N(cm-1)stretches, 1H NMR δNH, 13C NMR δC=N(ppm) chemical shifts of synthesized oxazine amines were assigned and correlated with Hammett substituent constants, F and R parameters. From the results of statistical analyses, the effect of substituents on the above spectral frequencies can be discussed.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 4; 109-116
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Infrared Studies and Mineral Element Analysis of the leaf of Vernonia amygdalina
Autorzy:: Duru, Ijeoma Akunna
Duru, Chidi Edbert
Powiązania:: https://bibliotekanauki.pl/articles/1113770.pdf
Data publikacji:: 2017
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Aliphatic esters
Elemental analysis
Infrared
Oxazine
Secondary amines
V. amygdalina
Opis:: Used in traditional medicine, infrared characterization of column eluates and elemental analysis of V. amygdalina was carried out to establish preliminary views of the chemical and mineral element composition of the leaf of this plant. In the five pure eluates obtained, we found that they contained saturated aliphatic esters, nitro-groups conjugated with benzene ring, secondary amines/nitrogen heterocycles, 1,3-disubstituted benzene and oxazine/oxazoline fragments, respectively. Moreover, we established that potassium, magnesium and sodium were the major minerals in the leaf, while copper, zinc, iron, nickel, manganese and chromium occurred in trace amounts. Research attention should therefore be focused on this plant for the full exploration and exploitation of its obvious antibiotic and mineral values.
Źródło:: World News of Natural Sciences; 2017, 13; 1-9
2543-5426
Pojawia się w:: World News of Natural Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Solvent-free synthesis, antimicrobial and insect antifeedant potentials of some 4(4-chloro-1-naphthyl)-5,6-dihydro-6-(substituted phenyl)-4H-1,3-oxazine-2-amines
Autorzy:: Thirunarayanan, G.
Powiązania:: https://bibliotekanauki.pl/articles/1075725.pdf
Data publikacji:: 2019
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: 3-oxazine-2-amines
4-(4-chloro-1-naphthyl)-5
6-dihydro-6-(substituted phenyl)-4H-1
SiO2-H3PO4
antimicrobial potentials
insect antifeedant activity
solvent-free synthesis
Opis:: More than 85% yields of thirteen 4-(4-chloro-1-naphthyl)-5,6-dihydro-6-(substituted phenyl)-4H-1,3-oxazine-2-amines weer synthesised by SiO2-H3PO4 catalyzed solvent-free cyclization of substituted styryl4-chloro-1-naphthyl ketones and urea under microwave irradiation. The synthesized oxazine amines have been characterized by analytical and spectroscopic techniques. The antimicrobial activities of these 4-(4-chloro-1-naphthyl)-5,6-dihydro-6-(substituted phenyl)-4H-1,3-oxazine-2-amines have been appraised by means of Bauer-Kirby technique. The insect antifeedant activities of these oxazine-2-amines were assessed by Dethler’s technique using 4th instar larvae Achoea janata L.
Źródło:: World Scientific News; 2019, 118; 1-16
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

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