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Wyszukujesz frazę "one-pot synthesis" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-11 z 11
    Tytuł:
    Synthesis of quercetin-functionalized silver nanoparticles by rapid one-pot approach
    Autorzy:
    Pandian, S.R.K.
    Kunjiappan, S.
    Ravishankar, V.
    Sundarapandian, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2096369.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    quercetin
    bioflavonoid
    one-pot synthesis
    AgNPs
    antioxidant
    Opis:
    Nanotechnology plays a pivotal role in all areas of science, and the synthesis and surface modification of nanoparticles are crucial in this field. Metal nanoparticles synthesized using plant extracts or phytocompounds are highly significant in the development of various therapeutics and diagnostics. In the present study, we report the one-pot and rapid synthesis of silver nanoparticles (AgNPs) by quercetin, a flavonoid found in various edible plants. The nanoparticles were then characterized using UV-VIS spectrophotometry, Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The role of quercetin in the synthesis of silver nanoparticles was demonstrated. The nanomaterial was 20–30 nm in size and spherical in shape. The silver nanoparticles were also confirmed to show antioxidant activity at 80 μg/ml concentration in vitro by DPPH, FRAP, and power reduction methods.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 1; 75-84
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simple and Efficient Three Component One-pot Synthesis of Pyrazolo[1,5,a]pyrimidines
    Autorzy:
    Morabia, A. R.
    Naliapara, Y. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/411804.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Pyrazolopyrimidine
    5-amino-N-cyclohexyl-3-(methylthio)-1H-pyrazole-4-carboxamide
    1-(2-bromophenyl)-2-nitroethanone
    mild reaction condition
    Opis:
    A series of novel 5-(2-bromophenyl)-N-cyclohexyl-2-(methylthio)-6-nitro-7-phenyl-4,7-dihydropyrazolo[1,5-a]pyrimidine-3-carboxamides were synthesized by a one-pot reaction of 5-amino-N-cyclohexyl-3-(methylthio)-1H-pyrazole-4-carboxamide, 1-(2-bromophenyl)-2-nitroethanone and aryl aldehydes in the presence of boric acid in water at refluxing temperature. Structures of compounds were demonstrated by Fourier transform infrared, 1H NMR, 13C NMR and elemental analysis. The advantages of this method are mild reaction condition, good yields, and operational simplicity.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2015, 41; 73-81
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Highly efficient and eco-friendly one-pot synthesis of penta substitute pyrrole derivatives under catalyst-free conditions
    Autorzy:
    Viradiya, D. J.
    Baria, B. H.
    Kakadiya, R.
    Kotadiya, V. C.
    Shah, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/412605.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    one-pot synthesis
    penta-substituted pyrrole derivatives
    multi-component reactions
    Opis:
    An eco-friendly and efficient one-pot synthesis of penta-substituted pyrrole derivatives via a four-component reaction of maldrum’s acid, arylglyoxal monohydrate, dimethyl but-2-yne-dioate and amines under catalyst-free conditions in an environmentally friendly medium is described. The simple experimental procedure, catalyst-free reaction conditions, short period of conversion, and excellent yields are the advantages of the present method. Good chemical yields have been achieved without the need for chromatography and recrystallization or other purification methods.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 11, 3; 257-264
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    One-pot three component (LaCl3•7H2O) catalysed biginelli reaction for the synthesis of 1,2,3,4-tetrahydropyrimidine
    Autorzy:
    Murugesan, C.
    Sihabudeen, M. Mohamed
    Ahamed, A. Asrar
    Powiązania:
    https://bibliotekanauki.pl/articles/1190119.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    2
    3
    4-tetrahydropyrimidine; one pot synthesis
    Multicomponent reaction; Biginelli reaction; 1
    Opis:
    A Series of tetrahydropyrimidine has been derived by LaCl3•7H2O catalysed one pot three component biginelli reaction. The compounds have synthesised from an aldehyde, ethyl acetoacetate and urea or thiourea in an ethanolic medium using a catalytic amount of (LaCl3•7H2O). This method provides quantitative yield and the catalysis can be easily recovered from the reaction medium and be re-used.
    Źródło:
    World Scientific News; 2016, 35; 87-99
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    One-pot synthesis of (S)-2-(6-methoxynaphtalen-2-yl)propanoic acid, (S)-Naproxen using Preyssler and Keggin-type heteropolyacids as green and reusable catalysts
    Autorzy:
    Gharib, A.
    Daneshtalab, M.
    Scheeren, J.(H.)W.
    Bamoharram, F.F.
    Roshani, M.
    Jahangir, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/778717.pdf
    Data publikacji:
    2009
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    katalizator
    heteropolikwasy
    D-mannitol
    (S)-naproxen
    Preyssler
    catalyst
    heteropoly acid
    (S)-Naproxen
    Opis:
    A simple, clean and environmentally benign route to the enantioselective synthesis of (S)-2-(6-methoxynaphtalen-2-yl)propanoic acid, (S)-Naproxen 3 is described by using Preyssler heteropolyacid, H14[NaP5W30O110], as a green and reusable catalyst in water and in the presence of 1-(6-methoxynaphthalen-2-yl)propan-1-one 1, D-mannitol 2. The products were obtained in very good yields.
    Źródło:
    Polish Journal of Chemical Technology; 2009, 11, 3; 8-14
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    SCMNPs@Uridine/Zn: An efficient and reusable heterogeneous nanocatalyst for the rapid one-pot synthesis of tricyclic fused pyrazolopyranopyrimidine and 3-methyl carboxylate substituted pyrano[2,3-c]pyrazole derivatives under solvent-free conditions
    Autorzy:
    Wei, Jia
    Gui, Wenjun
    Cui, Yanjun
    Zhang, Zhifang
    Yousif, Qahtan A.
    Powiązania:
    https://bibliotekanauki.pl/articles/778587.pdf
    Data publikacji:
    2020
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    nanocatalyst
    synthesis of tricyclic
    carboxylate
    efficient heterogeneous
    Opis:
    SCMNPs@Uridine/Zn is utilized as an environmental-friendly and efficient heterogeneous nanocatalyst for two one-pot four-component condensation reactions, containing hydrazine hydrate, arylaldehyde, ethyl acetoacetate, and barbituric acid to yield tricyclic fused pyrazolopyranopyrimidine derivatives (5a-q), and hydrazine hydrate, arylaldehyde, malononitrile, and dimethyl acetylenedicarboxylate/diethyl acetylenedicarboxylate to yield 3-methyl carboxylate substituted pyrano[2,3-c]pyrazole derivatives (8a-y) under solvent-free conditions with high to excellent yields. The main advantages of this process are easy work-up, short reaction times, no chromatographic purifications, and recyclability of the catalyst for a minimum of six runs without any signifcant decrease in yields of the products. Also, the prepared catalyst SCMNPs@Uridine/Zn was synthesized and fully characterized by various techniques including Fourier transform infrared spectroscopy (FT-IR), energy dispersive X-ray (EDX), thermogravimetric analysis (TGA), X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and Raman spectroscopy.
    Źródło:
    Polish Journal of Chemical Technology; 2020, 22, 2; 20-33
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two Step One-Pot Synthesis of Novel 5-(4-Fluorophenyl)-1H-Beno[e][1,4]Diazepin-2(3H)-One and it’s Base Catalyzed Transformation to N-Alkyl and C-3 Arylidene Derivatives
    Autorzy:
    Patel, Anil S.
    Khunt, H. R.
    Ghelani, S. M.
    Babariya, J. S.
    Vilapara, K. V.
    Naliapara, Y. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/412124.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    benzodiazepines
    base catalyzed
    cross-aldol
    Opis:
    We have demonstrated two step one-pot synthesis of novel 5-(4-Fluorophenyl)-1H-Beno[e][1,4]Diazepin-2(3H)-one using 2-Amino-4’-fluorobenzophenone as initial stating material. The small library of N-alkylation and C-3 benzylidene derivatives have been synthesized by base catalyzedreaction of 5-(4-fluorophenyl)-1H-benzo[e][1,4]diazepin-2(3H)-one (3) nucleus with various alkyl halides and aromatic aldehydes respectively.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 11, 2; 106-115
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An efficient one-pot multicomponent synthesis and characterization of 5-cyano-1,2,3,4-tetrahydropyrimidine derivatives
    Autorzy:
    Vaghasiya, R. G.
    Shah, V. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/411702.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    substituted pyrazole-4-carbaldehyde
    5-cyano-1,2,3,4-tetrahydropyrimidine derivatives
    multi component reaction
    non-chromatographic method
    Opis:
    A series of pyrimidine-5-carbonitrile derivatives was efficiently synthesized via one-pot, multi component reaction (MCRs) of 1,3-bifunctional synthon (ethylcyano acetate), substituted pyrazole-4-carbaldehyde, and thiourea/urea in the presence of basic catalyst. The key advantages of this process are high yields, shorter reaction times, easy work-up, and purification of products by non-chromatographic method.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2015, 40; 51-60
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    PEG mediated eco-friendly one pot sunthesis of benzylamine coumarin derivatives using multicomponent reactant
    Autorzy:
    Viradiya, D. J.
    Kotadiya, V. C
    Khunt, M. D.
    Baria, B. H.
    Bhoya, U. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/412545.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    one pot reaction
    benzylamine coumarin derivative
    green synthesis
    PEG-400
    Opis:
    A green resourceful, eco-friendly and facile protocol was developed for the synthesis of benzylamine coumarin derivatives by the reaction of 4-hydroxy coumarin, secondary amine and aromatic aldehyde in the presence of PEG400 as a solvent as well as catalyst at room temperature. A wide range of functional groups were tolerated in the developed protocol. The structures of all the synthesized compounds were confirmed by 1H NMR, IR, MASS and Elemental Analysis. The target molecules were obtained in good to excellent yield applying this method.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 11, 2; 177-184
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis of thiazolylazomethine substituted pyrazole derivative using conventional and one pot multicomponent synthetic routes
    Autorzy:
    Ladwa, Paresh
    Dhuda, Gautamkumar
    Godhaniya, Bhavna
    Modha, J. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1058101.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Catalyst free
    DMFDMA
    Multi component reaction
    Pyrazole
    Thiazole
    Thiazolo-Pyrazole - derivatives
    Opis:
    Knowing the importance of thiazole and pyrazole ring systems in various useful natural products and based on the reported biological activities of the synthetic derivatives of these ring system containing compounds against different types of microbes, we have synthesized novel thiazolo - pyrazole derivatives by one pot multi component catalyst free synthetic method. The product yields have been optimized by varying the reaction parameters which includes use of different solvents and temperature. Synthesised compounds were characterised by different spectoscopic method such as 1H NMR, IR and Mass.
    Źródło:
    World Scientific News; 2019, 134, 2; 242-257
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and characterization of ammonium polymer for anion removal in aqueous solutions
    Synteza i charakterystyka polimeru aminowego do usuwania anionów z roztworów wodnych
    Autorzy:
    Rahayu, Aster
    Hakika, Dhias Cahya
    Amrillah, Nafira Alfi Zaini
    Veranica, Veranica
    Powiązania:
    https://bibliotekanauki.pl/articles/24202763.pdf
    Data publikacji:
    2023
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    ammonium polymer
    nitrate
    nitrite
    one-pot approach
    phosphate
    polimer aminowy
    azotany
    azotyny
    synteza jednonaczyniowa
    fosforany
    Opis:
    In a one-step thermal process using 2-[(methacryloyloxy)ethyl]trimethylammonium chloride (META), an ammonium polymer was successfully obtained for the removal of anions (nitrates, nitrites, and phosphates) from aqueous solutions. Ethylene dimethacrylate (EDMA) was used as a cross-linking agent. The effect of cross-linking agent, porogen, and polymerization time on the structure and physical properties of the obtained polymer was examined (FTIR, SEM, BET, elemental analysis). The optimal conditions for META synthesis were a monomer to porogen ratio of 20:80, 75% functional monomer content and a 12-hour polymerization time.
    W jednoetapowym procesie termicznym przy użyciu chlorku 2-[(metakryloiloksy)etylo] trimetyloamoniowego (META) otrzymano polimer amoniowy do usuwania anionów (azotanów, azotynów i fosforanów) z roztworów wodnych. Jako środek sieciujący zastosowano dimetakrylan etylenu (EDMA). Zbadano wpływ środka sieciującego, porogenu i czasu polimeryzacji na strukturę i właściwości fizyczne otrzymanego polimeru (FTIR, SEM, BET, analiza elementarna). Jako optymalne warunki syntezy META przyjęto stosunek monomeru do porogenu 20:80, 75% procentową zawartość monomeru funkcyjnego i 12-godzinny czas polimeryzacji.
    Źródło:
    Polimery; 2023, 68, 10; 537--543
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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