Littérature scientifique sur le sujet « Catalyse one-pot »
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Articles de revues sur le sujet "Catalyse one-pot"
Chen, Gong-Jun, Chao-Qun Chen, Xue-Tian Li, Hui-Chao Ma et Yu-Bin Dong. « Cu3L2 metal–organic cages for A3-coupling reactions : reversible coordination interaction triggered homogeneous catalysis and heterogeneous recovery ». Chemical Communications 54, no 82 (2018) : 11550–53. http://dx.doi.org/10.1039/c8cc07208f.
Texte intégralZhou, Yujiao, Jocasta Avila, Nicolas Berthet, Solène Legrand, Catherine C. Santini, Margarida Costa Gomes et Véronique Dufaud. « Integrated, one-pot carbon capture and utilisation using porous ionic liquids ». Chemical Communications 57, no 64 (2021) : 7922–25. http://dx.doi.org/10.1039/d1cc02642a.
Texte intégralRajabi, Fatemeh, Mika Sillanpää, Christophe Len et Rafael Luque. « Efficient Synthesis of Dihydropyrimidines Using a Highly Ordered Mesoporous Functionalized Pyridinium Organosilica ». Catalysts 12, no 3 (21 mars 2022) : 350. http://dx.doi.org/10.3390/catal12030350.
Texte intégralSingh, Nishant, Kai Zhang, César A. Angulo-Pachón, Eduardo Mendes, Jan H. van Esch et Beatriu Escuder. « Tandem reactions in self-sorted catalytic molecular hydrogels ». Chemical Science 7, no 8 (2016) : 5568–72. http://dx.doi.org/10.1039/c6sc01268j.
Texte intégralLi, Jianjun, Jia Li et Weike Su. « Proline triflate catalysed Diels–Alder reaction in the synthesis of tetrahydroquinoline derivatives ». Journal of Chemical Research 2009, no 8 (août 2009) : 499–504. http://dx.doi.org/10.3184/030823409x12474221035082.
Texte intégralTai, Xi-Shi, Peng-Fei Li et Li-Li Liu. « Synthesis, Crystal Structure, and Catalytic Activity of a Calcium(II) Complex with 4-Formylbenzene-1,3-disulfonate-isonicotinic Acid Hydrazone ». Bulletin of Chemical Reaction Engineering & ; Catalysis 13, no 3 (4 décembre 2018) : 429. http://dx.doi.org/10.9767/bcrec.13.3.1961.429-435.
Texte intégralSun, Zhong, Lifang Xue, Shengtian Wang, Xiaohong Wang et Junyou Shi. « Single step conversion of cellulose to levulinic acid using temperature-responsive dodeca-aluminotungstic acid catalysts ». Green Chemistry 18, no 3 (2016) : 742–52. http://dx.doi.org/10.1039/c5gc01730k.
Texte intégralPerez Ortiz, Gustavo, John D. Sidda, Emmanuel L. C. de los Santos, Catherine B. Hubert et Sarah M. Barry. « In vitro elucidation of the crucial but complex oxidative tailoring steps in rufomycin biosynthesis enables one pot conversion of rufomycin B to rufomycin C ». Chemical Communications 57, no 89 (2021) : 11795–98. http://dx.doi.org/10.1039/d1cc04794a.
Texte intégralRahimi-Nasrabadi, Mehdi, Morteza Hosseini, Amir Homayoun Keihan et Mohammad Reza Ganjali. « A Colorimetric Sensor for Dopamine Detection Based on Peroxidase-like Activity of Ce2(MoO4)3 Nanoplates ». Current Pharmaceutical Analysis 15, no 3 (11 février 2019) : 224–30. http://dx.doi.org/10.2174/1573412914666180213123557.
Texte intégralDiment, Wilfred T., Tim Stößer, Ryan W. F. Kerr, Andreas Phanopoulos, Christopher B. Durr et Charlotte K. Williams. « Ortho-vanillin derived Al(iii) and Co(iii) catalyst systems for switchable catalysis using ε-decalactone, phthalic anhydride and cyclohexene oxide ». Catalysis Science & ; Technology 11, no 5 (2021) : 1737–45. http://dx.doi.org/10.1039/d0cy02164d.
Texte intégralThèses sur le sujet "Catalyse one-pot"
Boscaro, Paolo. « One-pot synthesis of structurated of TiO2 materials easy to handle (not nanoparticles) for photocatalysis under visible light and sunlight ». Thesis, Montpellier, Ecole nationale supérieure de chimie, 2016. http://www.theses.fr/2016ENCM0009.
Texte intégralThe aim of this study is to develop titania based materials able to perform photocatalytic reaction in flow condition, under sunlight or visible light, with special physical and chemical properties in order to overcome common photocatalysts’ deficiencies like: mechanical stability, pressure drop, low mass transfer and contact time, reduced wavelength range absorption, photo-generated charge lifetime, and in general all features that limit photocatalysts efficiencies. Three synthesis methods have been developed and optimized to obtain TiO2 monoliths with shape and dimension that can be adapted to any specific application. TiO2 monoliths, displaying bimodal macro-mesoporous interconnected network together with an elevated mechanical and chemical stability, have been used as flow photocatalyst microreactor under different flow rate conditions. Synthesized monoliths displayed enhanced visible light absorption, enabling them to efficiently operate in a vast range of illumination. TiO2 monoliths absorption on the visible range of the spectrum is attributed to carbon-nitrogen containing species within the material. Orange G degradation in aqueous medium have been performed both in batch and flow reactors under sunlight, visible light and UV light. All reactions resulted in complete mineralization of pollutant, with higher degradation rate than TiO2 nanoparticles benchmark material (P-25) when visible light is used. No photocatalyst deactivation have been detected after 85 hours of wastewater treatment in flow conditions. Similar TiO2 material, with a free-standing thick-film shape, have been used to perform photocatalytic water splitting under visible light. Another strategy has been developed to synthesize a TiO2/CuO self-standing film to enhance charge separation giving unexpected results in terms of hydrogen production
Lainer, Bruno. « A multicatalytic approach to enantio-, and diastereoselective arylation of alcohols ». Electronic Thesis or Diss., Strasbourg, 2023. http://www.theses.fr/2023STRAF080.
Texte intégralAlcohol moieties are present in a great diversity of valuable fine chemicals from nature and synthesis, therefore methods enabling their structural diversification are sought after. However, modifying the structure of alcohols at certain unreactive positions, even with the aid of catalysis, remains a challenge or requires tedious often wasteful multistep procedures. Recently, increased attention has been paid to multicatalysis, which combines multiple catalysts within one system, enabling the discovery of previously inaccessible reactivities or increasing the overall efficiency of multistep transformations. Described within are methods which enable the diastereo-, and enantioselective α-, and β-arylation of alcohols. By combining Ru- and Pd-based catalysts the unprecedented, enantioselective (and diastereodivergent in the case of alcohols already bearing stereocenters) β-arylation of primary alcohols can be carried out. Also, under sequential relay catalysis enantioenriched secondary benzylic alcohols can be obtained from a variety of available starting materials, such as primary alcohols, or alcohols bearing a double bond. Overall, these protocols demonstrate the potential of multicatalysis as a synthetic tool for diversifying alcohols. In a broader context, this thesis sets the stage for devising novel, multicatalytic strategies and methods for efficient synthesis
Giorgi, Pascal. « Nouvelles réactions à économie d'atomes et d'étapes basées sur la catalyse par des nanoparticules d'or et la multicatalyse. Applications dans la synthèse de chimie fine et des odorants ». Thesis, Université Côte d'Azur (ComUE), 2017. http://www.theses.fr/2017AZUR4127.
Texte intégralElaboration of synthetic methods based on metal-catalyzed reactions has been a hot topic in organic chemistry. Despite good efficiency, catalysis proceeding homogeneously, are limited in the operation of recovering/recycling of the catalysts. An important stress was placed to design catalysis, offering both the efficiency of homogeneous catalysts and the recyclability of heterogeneous catalysts. In this context, metal nanoparticles merged as a key tool, due to their unique physical and chemical properties. Notably, Au NPs have shown remarkable catalytic activity in the oxidation of activated alcohols under O2 atmosphere. Since now, the access to more complex molecules is the next step forward for this field, we envisioned multicatalytic roads, based on the oxidation of activated alcohols via supported Au NPs. Our choice of using solid catalysts was relevant, since nanostructured catalysts for which the fraction of active sites are located on the surface, limit the risk of cross-quenching. The latter carbonyl formed, could be further converted in situ, via tandem protocol. Herein, we developed novel, atom- and step-economical bicatalytic one-pot processes, to access substituted chromenes/quinolines (53-93%) by tandem oxidation/hetero-Michael addition/aldolisation combining nanocatalysis and base catalysis, ortho-THCs (50-81%) via tandem oxidation/arylation/cyclisation combining nanocatalysis and supported catalysts and a tandem cascade oxidation/hydrolysis to access HMLA (86%, sel 93%). A large panel of products of biological activity relevance, pertaining to the fragrance chemistry or aiming in some cases, pre-industrial scalability via continuous flow applications
Cusati, Giuseppe. « La catalyse hétérogène au palladium en chimie fine : une étude sur la synthèse " one-pot " de stilbènes et bibenzyles : application à la synthèse de styrènes et aryl-indoles ». Phd thesis, Université Claude Bernard - Lyon I, 2009. http://tel.archives-ouvertes.fr/tel-00876267.
Texte intégralBalas, Matthieu. « Sustainable catalytic process for the one-pot formation of cyclic carbonates through oxidation of alkenes and CO2 cycloaddition ». Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS068.
Texte intégralThe objective of this project is to develop a comprehensive reaction for the synthesis of styrene carbonate from styrene in the presence of CO2 and a clean oxidant: O2. Salophen-R-M (R = Me2N, Et2N, tBu and M = Mn, Ni and Cr) catalysts were synthesized and their co-catalytic activity for the cycloaddition reaction of CO2 on styrene oxide was evaluated in the presence of Bu4NBr; Salophen-Me2N-Cr showed the best results: 99% yield obtained after 3h at 80°C. Salophen-R-M complexes were grafted onto mesoporous silica {NH2}-SBA-15 by covalent bonding. In parallel, the binding of quaternary ammonium salts was optimized by ex-situ grafting on SBA-OH. These catalytic materials were tested for the formation of styrene carbonate, with yields higher than those obtained in solution thanks to the synergy effect linked to the presence of silanols. The Salophen-Me2N-Cr catalyst was tested in the Mukaiyama epoxidation reaction of styrene in the presence of O2. A 50% yield of styrene oxide was obtained under reaction conditions similar to those used in cycloaddition. The overall reaction was performed in the presence of Bu4NBr and Salophen-Me2N -Cr catalysts at 80°C under 3.5 bar O2 and 11 bar CO2. A maximum yield of styrene carbonate of 31% was obtained after a two-step reaction of oxidation (3h) and cycloaddition (20h)
Boiaryna, Liliana. « Evaluation de la catalyse à l’or dans la chimie des ions N-acyliminiums : application à la synthèse one-pot de composés polycycliques azotés ». Thesis, Le Havre, 2013. http://www.theses.fr/2013LEHA0008/document.
Texte intégralAGold catalysts, as soft carbophilic Lewis acids, have rapidly develop and mature to become nowadays an outstanding tool for new C-C and C-X bonds (X = O, S, N) through π-bond activation. Moreover, its σ-Lewis acidity was also acknowledged and exemplified by numerous examples of carbonyl, imine, π-activated alcohol and epoxide activation. As part of our ongoing studies on N-acyliminium ion chemistry, we have been interested in using gold catalysts for N-acyliminium ion generation. First, we have shown that the σ-Lewis acidity of gold(I) and gold(III) could be exploited to efficiently catalyze the nucleophilic substitution reactions of various alkoxy- and acetoxylactams, precursors of N-acyliminium ions. The reaction was found to tolerate a wide range of nucleophiles, including allyltrimethylsilane, silyl enol ethers, arenes as well as active methylene derivatives. Next, gold catalysis was applied to cascade α-amidoalkylation/hydroarylation sequences unifying both the σ- and π-Lewis acid properties of gold complexes. Alternatively, Brønsted acid/Lewis acid multicatalysis approach has been alternatively developed to override some limitations featuring this unprecedented tandem intermolecular Friedel–Crafts/intramolecular hydroarylation sequence. This two complementary and highly efficient cascade sequences enable expedient access to complex fused polycyclic structures from trivial materials
Ellis, Richard D. « Reductive amination catalysed by iridium complexes ». Thesis, University of Sussex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341064.
Texte intégralPantaine, Loïc. « Aminocatalyse et Réactions en Cascade pour la Synthèse de Polycycles Tridimensionnels ». Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLV084/document.
Texte intégralThe work presented in this manuscript aims to study organocatalytic reaction sequences enabling the stereoselective formation of carbon-carbon and carbon-heteroatom bonds. Various strategies have been developped for the preparation of chiral cyclic architectures, which represents an important challenge due to their presence in a vast number of biologically active compounds. This manuscript starts off by introducing the principal of organocatalysis, and more specifically the different activation means used in aminocatalysis.The first chapter focuses on the regio- and diastereoselective synthesis of cyclic hydrazine-containing bicycles in a solvent-free way. The second chapter merges de-aromatization or desymetrization with an aminocatalytic reaction sequence, to yield tridimensional enantioenriched polycycles from unsaturated aldehydes. Lastly, the third chapter concentrates on the synthesis of unsymmetrical sulfamides and their uses as substrates in aminocatalysis
Mostafa, Mohamed A. B. « One-pot transition metal-catalysed processes for the synthesis of biologically active compounds ». Thesis, University of Glasgow, 2018. http://theses.gla.ac.uk/8779/.
Texte intégralNassar, Hardy Luma. « Tandem reactions using multi-task catalysts ». Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14317/document.
Texte intégralThe development of clean chemistry and therefore sustainable is one of the major challenges of the 21st century in industrialized countries. Being in the heart of many discoveries in various scientific fields ranging from physics to medicine, the chemical sciences must play a central role in solving a number of environmental problems we face. My thesis work is part of this problem through the development of synthetic methodologies involving several transformations in the same reactor. We have developed the reaction sequences called HRC (for Heck-Reduction-cyclization) building on the multi-task of a palladium catalyst. This work allowed us to prepare a variety of functionalized heterocycles or compounds from which we can cite the oxindole, the indanones, or the naphthoxindoles. This work has resulted for the time four publications in peer-reviewed journals
Chapitres de livres sur le sujet "Catalyse one-pot"
Guisnet, Michel, et Matteo Guidotti. « One-Pot Reactions on Bifunctional Catalysts ». Dans Catalysts for Fine Chemical Synthesis, 157–69. Chichester, UK : John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/0470094214.ch8.
Texte intégralKulkarni, Suvarn S. « Regioselective, One-Pot Functionalization of Carbohydrates ». Dans Selective Glycosylations : Synthetic Methods and Catalysts, 255–76. Weinheim, Germany : Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527696239.ch12.
Texte intégralGade, Lutz H., et Solveig A. Scholl. « C-N-Coupling Reactions in Catalytic One-Pot Syntheses Using Molecular Group 4 Catalysts ». Dans Molecular Catalysts, 281–98. Weinheim, Germany : Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527673278.ch13.
Texte intégralSivasubramaniam, Dorairaaj, et Nor Aishah Saidina Amin. « One Pot Synthesis of γ-Valerolactone from D-Glucose Over H3PW12O40/ZrO2 Catalyst ». Dans ICGSCE 2014, 307–13. Singapore : Springer Singapore, 2015. http://dx.doi.org/10.1007/978-981-287-505-1_36.
Texte intégralOhta, Yusuke. « Facile Synthesis of 1,2,3,4-Tetrahydro-β-Carbolines by One-Pot Domino Three-Component Indole Formation and Nucleophilic Cyclization ». Dans Copper-Catalyzed Multi-Component Reactions, 47–61. Berlin, Heidelberg : Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-15473-7_3.
Texte intégralGröger, Harald. « Chapter 15. Emerging Fields in One-pot Multi-step Synthesis with Combined Chemo- and Bio-catalysts : Sequential- and Domino-type Process Concepts as well as Compartmentation Strategies ». Dans Catalysis Series, 439–72. Cambridge : Royal Society of Chemistry, 2018. http://dx.doi.org/10.1039/9781788010450-00439.
Texte intégralVijayasankar, A. V., H. Kathyayini, Harikrishna Tumma et N. Nagaraju. « Mesoporous Iron Aluminophosphate : An Efficient Catalyst for One Pot Synthesis of Amides by Ester-Amide Exchange Reaction ». Dans Ceramic Transactions Series, 127–40. Hoboken, NJ, USA : John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118491638.ch13.
Texte intégralSpruell, Jason M. « A One-Pot Synthesis of Constitutionally Unsymmetrical Rotaxanes Using Sequential Cu(I)-Catalyzed Azide–Alkyne Cycloadditions ». Dans The Power of Click Chemistry for Molecular Machines and Surface Patterning, 35–51. New York, NY : Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9647-3_3.
Texte intégralPrakash, G. K. Surya, Chiradeep Panja, Clement Do, Inessa Bychinskaya, Habiba Vaghoo, Thomas Mathew et George A. Olah. « Efficient One-Pot Synthesis of Novel Fluorinated Heterocycles Using Trimethylsilyl Trifluoromethanesulfonate as a Metal-Free Homogeneous Lewis Acid Catalyst ». Dans ACS Symposium Series, 59–83. Washington, DC : American Chemical Society, 2009. http://dx.doi.org/10.1021/bk-2009-1003.ch004.
Texte intégralKeilitz, Juliane, Hasnain A. Malik et Mark Lautens. « Synthesis of Heterocycles via Metal-Catalyzed Domino/One-Pot Reactions That Generate a C—N or C—O Bond ». Dans Topics in Heterocyclic Chemistry, 187–223. Berlin, Heidelberg : Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/7081_2013_106.
Texte intégralActes de conférences sur le sujet "Catalyse one-pot"
Medjahed, Nassima, Zahira Kibou, Amina Berrichi, Redouane Bachir et Noureddine Choukchou-Braham. « Nickel-Catalyzed, One-Pot Synthesis of Pyrazoles ». Dans International Electronic Conference on Synthetic Organic Chemistry. Basel Switzerland : MDPI, 2022. http://dx.doi.org/10.3390/ecsoc-26-13687.
Texte intégralMarinič, Dana, Brigita Hočevar, Miha Grilc et Blaž Likozar. « One-pot Algae Conversion Into Sustainable Biofuel by Catalytic Hydroprocessing ». Dans International Conference on Technologies & Business Models for Circular Economy. University of Maribor Press, 2022. http://dx.doi.org/10.18690/um.fkkt.3.2022.2.
Texte intégralAffeldt, Ricardo F., et Dennis Russowsky. « One-Pot Solvent-Free Synthesis of Polyhydroquinolines Promoted by In/SiO2 Composite Catalyst ». Dans 14th Brazilian Meeting on Organic Synthesis. São Paulo : Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0156-2.
Texte intégralThorat, Bapu R., Shravani D. Thakare, Dnyaneshwar Mhaske et Suraj N. Mali. « One-Pot Synthesis of Knoevenagel Condensation Products Using Boric Acid as a Catalyst ». Dans The 4th International Electronic Conference on Applied Sciences. Basel Switzerland : MDPI, 2023. http://dx.doi.org/10.3390/asec2023-15366.
Texte intégralLv, Jing, Liang Jun, Xiangfeng Kong, Lu Cao, Ying Zhang et Shuwei Zhang. « One-Pot Synthesis of 1, 4-Dihydropyridines in PEG Under Catalyst-Free Conditions ». Dans International Conference on Chemical,Material and Food Engineering. Paris, France : Atlantis Press, 2015. http://dx.doi.org/10.2991/cmfe-15.2015.82.
Texte intégralMohan, G., N. Saichaitanya, S. Murali, N. Bakthavatchala Reddy, Grigory V. Zyryanov et C. Suresh Reddy. « Ultrasound-assisted PSA catalyzed one-pot green synthesis of pyrazolyl pyrrole derivatives ». Dans PROCEEDINGS OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN MECHANICAL AND MATERIALS ENGINEERING : ICRTMME 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0018172.
Texte intégralNaimi-Jamal, Mohammad, Ali Sharifi et Amene Yaghoubi. « One-pot three-component Mannich-type reaction catalyzed by functionalized ionic liquid ». Dans The 14th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland : MDPI, 2010. http://dx.doi.org/10.3390/ecsoc-14-00458.
Texte intégralBotteselle, Giancarlo V., Marcelo Godoi, Fábio Z. Galetto, Devender Singh, Luana Bettanin et Antonio Luiz Braga. « Microwave-assisted one-pot synthesis of symmetrical dichalcogenides catalyzed by CuO nanopowder ». Dans 14th Brazilian Meeting on Organic Synthesis. São Paulo : Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0161-1.
Texte intégralMaleki, Ali, Mina Ghassemi et Vahid Eskandarpour. « Synthesis of 4H-Pyran Derivatives via a Green One-Pot Multicomponent Reaction Catalyzed by CuFe2O4¬ Magnetic Nanoparticles as a Reusable Catalyst ». Dans The 18th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland : MDPI, 2014. http://dx.doi.org/10.3390/ecsoc-18-a037.
Texte intégralJavanshir, Shahrzad, Fatemeh Bamoharram, Majid Heravi et Allen Ohanian. « One-pot Synthesis of 2\'-Aminobenzothiazolomethylnaphtols In water catalyzed by Wells-Dawson heteropolyacid ». Dans The 13th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland : MDPI, 2009. http://dx.doi.org/10.3390/ecsoc-13-00197.
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