Literatura académica sobre el tema "Formation de liaisons C-S"
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Artículos de revistas sobre el tema "Formation de liaisons C-S"
Top, Siden y Gérard Jaouen. "Formation de liaison CC par couplage réducteur d'ions carbéniums arène chrome tricarbonyle". Journal of Organometallic Chemistry 336, n.º 1-2 (diciembre de 1987): 143–51. http://dx.doi.org/10.1016/0022-328x(87)87164-4.
Texto completoHiemstra, Henk, Floris P. Rutjes, Sape S. Kinderman, Jan H. van Maarseveen y Hans E. Schoemaker. "C-C Bond Formation viaN-Phosphoryliminium Ions". Synthesis 2004, n.º 09 (2004): 1413–18. http://dx.doi.org/10.1055/s-2004-822376.
Texto completoPeng, Kang, Hui Zhu, Xing Liu, Han-Ying Peng, Jin-Quan Chen y Zhi-Bing Dong. "Chemoselective C-S/S-S Formation between Diaryl Disulfides and Tetraalkylthiuram Disulfides". European Journal of Organic Chemistry 2019, n.º 47 (27 de noviembre de 2019): 7629–34. http://dx.doi.org/10.1002/ejoc.201901401.
Texto completoMarkó, István E., J. Mike Southern y M. Lakshmi Kantam. "Stoichiometric C-C Bond Formation Using Triorganothallium Reagents". Synlett 1991, n.º 04 (1991): 235–37. http://dx.doi.org/10.1055/s-1991-20690.
Texto completoWang, Haibo, Lu Wang, Jinsai Shang, Xing Li, Haoyuan Wang, Jie Gui y Aiwen Lei. "Fe-catalysed oxidative C–H functionalization/C–S bond formation". Chem. Commun. 48, n.º 1 (2012): 76–78. http://dx.doi.org/10.1039/c1cc16184a.
Texto completoSharma, Upendra, Ritika Sharma, Rakesh Kumar, Inder Kumar y Bikram Singh. "Selective C–Si Bond Formation through C–H Functionalization". Synthesis 47, n.º 16 (9 de julio de 2015): 2347–66. http://dx.doi.org/10.1055/s-0034-1380435.
Texto completoZhang, Honghua, Huihong Wang, Yi Jiang, Fei Cao, Weiwei Gao, Longqing Zhu, Yuhang Yang et al. "Recent Advances in Iodine‐Promoted C−S/N−S Bonds Formation". Chemistry – A European Journal 26, n.º 72 (5 de octubre de 2020): 17289–317. http://dx.doi.org/10.1002/chem.202001414.
Texto completoSun, Fengli, Xuemin Liu, Xinzhi Chen, Chao Qian y Xin Ge. "Progress in the Formation of C-S Bond". Chinese Journal of Organic Chemistry 37, n.º 9 (2017): 2211. http://dx.doi.org/10.6023/cjoc201703038.
Texto completoJean, Mickaël, Jacques Renault, Pierre van de Weghe y Naoki Asao. "Gold-catalyzed C–S bond formation from thiols". Tetrahedron Letters 51, n.º 2 (enero de 2010): 378–81. http://dx.doi.org/10.1016/j.tetlet.2009.11.025.
Texto completoChoudhuri, Khokan, Milan Pramanik y Prasenjit Mal. "Noncovalent Interactions in C–S Bond Formation Reactions". Journal of Organic Chemistry 85, n.º 19 (25 de agosto de 2020): 11997–2011. http://dx.doi.org/10.1021/acs.joc.0c01534.
Texto completoTesis sobre el tema "Formation de liaisons C-S"
Leclercq, Elise. "Formation de liaisons C-S et C-C par activation photo- et électrochimique en flux". Electronic Thesis or Diss., Université de Lille (2022-....), 2023. https://pepite-depot.univ-lille.fr/ToutIDP/EDSMRE/2023/2023ULILR037.pdf.
Texto completoThis thesis describes the development of new methodologies for the formation of C-C and C-S bonds via electro-and photochemical activation in order to develop eco-friendlier batch and continuous flow processes. The use of photons offers organic chemists an excellent opportunity to introduce a high level of molecular complexity in a “reagent-free” environment. Organic electrosynthesis makes it to replace the use of oxidizing and reducing chemical agents by the addition or removal of one or more electrons from electrodes, which can be assimilated as a green, clean and trace-free reagent and which can be derived form renewable electricity. That's why, electrosynthesis is more and more attractive for carrying out oxidation-reduction reactions. In addition, the transposition of photochemical and electrochemical in flow is also more interesting as it makes possible to considerably reduce energy costs, reaction time but also to improve the selectivity of reactions. In the first part, this work focuses on the development of an imidazo[1,2-a]pyridines electrochemical sulfonylation reaction in conventional and flow reactors. This method is compatible with a wide range of nitrogen heterocycles and substituents (37 examples described with a maximum yield of 90%).The second part concerns the development of a new method for trifluoromethylation of nitrogenous heterocyles by electrochemical activationin conventional and flow reactors. This methodology makes possible to obtain a wide range of protected and unprotected trifluoromethyl pyridinones with average to good yields and without supporting electrolyte. Moreover, the conversion of this reaction to a method of oxy- and trifluoromethylation of cyclic enamides is introduced in a last part. The use of flow devices being limited to completely homogeneous reactions and to avoid any clogging phenomenon, only the reaction of oxy-trifluoromethylation could be carried out in fluidic reactor also allowing electrolyte suppression. The reaction tolerates many substituents both on the benzyl cycle and on the enamide cycle and the influence of the nucleophile on the oxy-trifluoromethylation reaction has been studied and led to average to excellent yields (55% to 90%).Finally, in the last section, we set out to develop a new method for C-C bond formation by photochemical activation via new aryne photoprecursors. The preliminary results obtained are encouraging for further study, with a view to transposition to a fluidic reactor.In conclusion, this work demonstrates the benefits and limitations of continuous flow technology, particularly for photochemical and electrosynthesis processes. The use of microfluidic devices in electrosynthesis enables the decarbonization of organic oxidation-reduction reactions, accompanied by a significant reduction in electricity consumption by a third at constant productivity, while limiting the use of supporting electrolytes in an atom-saving approach. This methodological approach coupled with a low-carbon electricity source is thus virtuous and thus offers a solution to current environmental problems. In addition, the development of a new methodology for generating arynes using green activation may prove promising for the future
Pagès, Lucas. "Hydrofonctionnalisation d'allénamides terminaux par catalyse au cuivre : formation de liaisons C-C, C-S, C-P et C-O". Electronic Thesis or Diss., Montpellier, Ecole nationale supérieure de chimie, 2022. http://www.theses.fr/2022ENCM0017.
Texto completoOne of the main objective of the thesis is to discover new economic, non-toxic and non-polluting processes for the synthesis of targets with high added value (in the field of pharmacy and materials), starting from simple starting molecules (possibly issues from the plant world). These new processes will mainly use homogeneous catalysis and inexpensive and low-cost metal catalysts based for example on copper (the methods that these new processes are intended to replace generally make use of very expensive and highly toxic palladium based catalysts and sophisticated ligands). The research will be based on the expertise of the host team in the field of hydrofunctionalization (ref 1) of unsaturated bonds (including hydroamination) as well as in the arylation of carbon, oxygenated or nitrogenous nucleophiles (ref 2) by copper catalysis (formation of C-C and C-heteroatom bonds). The project will include a synthesis methodology part as well as a very advanced mechanistic study of the discovered catalytic systems (NMR, kinetic studies, isolation of intermediate metal complexes, DFT calculations). Application and transfer to industry, where the team has a great deal of experience, will then be considered and implemented if necessary. 1. a) Chem. Comm, 2015, 51, 11210. b) Org. Lett. 2015, 17, 1224. c) Org. Lett. 2016, 18, 1482. d) Adv. Sytnh. Cat., 2017, 349, 4388. e) ACS. Catal. 2017, 7, 425. f) Org. Lett. 2018, 20, 223. g) Synthesis, 2019, 51, 1225. 2. a) Angewandte Chemie, 2007, 46(6), 934. b) Angew. Chem. Int. Ed. 2009, 48, 337. c) Angew. Chem. Int. Ed. 2009, 48, 6954. d) Angew. Chem. Int. Ed. 2009, 48, 8725. d) Angew. Chem. Int. Ed. 2012, 51, 12815. e) Chem. Comm, 2013, 49, 7412. f) Angewandte Chemie, 2015, 54, 1058. g) Angewandte Chemie, 2016, 55, 3785
Doussot, Joël. "Formation selective de liaisons c-n et c-cn par substitution nucleophile oxydante de liaisons c-h". Paris 6, 1993. http://www.theses.fr/1993PA066076.
Texto completoRitleng, Vincent. "Fonctionnalisation sélective de liaisons C-H dans des conditions douces : formation de liaisons C-C induites par le ruthénium". Université Louis Pasteur (Strasbourg) (1971-2008), 2001. http://www.theses.fr/2001STR13101.
Texto completoFrogneux, Xavier. "Transformations réductrices du CO2 pour la formation de liaisons C-N et C-C". Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112136/document.
Texto completoIn the current world, carbon dioxide (CO2) is the major waste of the massive utilization of fossil resources but only few applications have been developed using this compound. In order to take advantage of its abundancy, the development of novel chemical transformation of CO2 to produce fine chemicals is of high interest in the scientific community. In particular, the formation of C-N bond(s) from CO2 and amine compounds unlocks a new way to access high energy and value-added. A second type of highly desirable transformation is the formation of C-C bonds with CO2 so as to synthesize carboxylic acid derivatives. The utilization of hydrosilanes as mild reductants allows the reactions to proceed under 1 bar of CO2 with abundant and cheap metal-based catalysts (iron, zinc) or with organocatalysts. The synthesis of formamides, methylamines and aminals from CO2 are described herein. Ultimately, the catalytic carboxylation of carbosilanes has been achieved for the first time using copper-based complexes. In the specific case of 2-pyridylsilanes, the use of pentavalent fluoride salts allowed us to perform the reaction without catalyst
Liu, Yujia. "Formation de liaisons C-C, C-S, C-N et C-P réalisée par catalyse au cuivre, au manganèse ou en absence de métal de transition". Thesis, Montpellier, Ecole nationale supérieure de chimie, 2017. http://www.theses.fr/2017ENCM0016.
Texto completoThis thesis is one part of a general research of the novel, non-expensive and environmentally friendly methods for the synthesis of the interesting molecules in the pharmaceutical, agrochemical or material field. In particular, the objective consists of creating the C-C and C-heteroatom (S, N, P) bonds by using copper, manganese catalysis or transition-metal-free system.In the first part, a copper-catalyzed palladium-free Sonogashira reaction has been realized under biphasic conditions (water / organic substrates) allowing decreasing the copper loading up to 0.02 – 0.2 mol% and a potential intermediate species of this reaction, corresponding to a copper cluster linked with acetylide moiety, has been identified by X-ray diffraction.In the second part, we described a novel carbon dioxide involved copper-catalyzed system for the methylthiolation of aryl halides using dimethylsufoxide as a source of methylthio group. The presence of carbon dioxide is a crucial factor for the formation of aryl methyl sulfides products and its role is discussed.The third part describes the manganese-catalyzed homocoupling and cross-coupling reactions via the formation in situ of aryllithium from corresponding aryl halides or arenes. According to the experimental conditions, the symmetrical or unsymmetrical biaryls could be obtained. An intermediate complex of manganese which could involve in the reaction mechanism was detected by ESI-MS.Finally, a transition-metal-free system associating DMF with t-BuOK has been developed to realize the arylation of aromatic halide derivatives and various nucleophiles such as pyrazol, imidazole, dialkyl disulfide or diarylphosphine oxide. This project is at a preliminary stage
Vabre, Roxane. "Fonctionnalisation directe de liaisons C-H et couplages croisés pour la formation de liaisons C-C et C-N : synthèse de purines 6,8,9-trisubstituées". Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00923198.
Texto completoVece, Vito. "Formation de liaisons C-C et C-O par activation électrophile de doubles liaisons catalysée par des superacides de Brönsted et de Lewis". Nice, 2011. http://www.theses.fr/2011NICE4028.
Texto completoThe use of Brönsted superacids (TfOH and Tf2NH) or Lewis superacids (M(n)(OTf)n and M(n)(NTf2)n) in organic synthesis presents a high interest in a wide number of reactions, particularly for the C-O, C-N and C-C bond formation involving the electrophilic activation of a double bond. These superacids could be used in sub-stoichiometric amounts whiole remaining more active and selective than more conventional Lewis acids, therefore improving the Green Chemistry aspects of our studies. We have used these catalysts to carry out Friedel-Crafts type reactions, tandem Friedel-Crafts-hydroalkoxylation processes and cycloisomerisations. The polyfunctionalised compounds for which a novel and efficient access is proposed present potential applications in medicinal, agricultural and perfume chemistry. A first chapter is devoted to the bibliographical studies of the various topics presented in this manuscript. In a second chapter, the Friedel-Crafts type allylation reaction from aromatic cycles, phenolic or not, have been studied and oriented towards the synthesis of valuable chemicals of industrial relevance. In a third chapter, mechanistic studies based on kinetic measurements and theoretical calculations on this reaction are presented. In a fourth chapter, cyclisation reactions of polyinsaturated compounds such as 1,6-dienes and aza-dines are presented. The cycloisomerisation of substituted 1,6-dienes allowed the access to several new compounds of interest in fragrance chemistry, a central interest of our laboratory. The application of the catalytic systems studied in the synthesis of compounds with odorant properties has
Tremel, Pascale. "Formation de liaisons C-C dans des réactions catalysées par des "superacides" de Lewis". Nice, 2011. http://www.theses.fr/2011NICE4126.
Texto completoThe carbonyl ene reaction, the cyclization of homoallylic and allylic alcohols to double bonds and the anodic cyclization of 1,6-dienes are useful methods in organic synthesis in order to obtain new compounds, with variable substitutions. The purpose of this work deals with the catalysis of these reactions by metal triflates and triflimides, more acidic than classical Lewis Acids. The carbonyl ene reaction with iron (II) triflimide led to the formation of cyclic hydroxylic compounds from aldehydes and ketones with only 0,1 to 10 mol% of catalyst. Ketone derivatives provided also cascade reactions. Five membered ring ethers were obtained by the cyclization of homoallylic alcohols with 1 mol% of Al(OTf)3. The cyclization of allylic alcohols led to five and six membered rings with 5 to 10 mol% of Al(OTf)3. The study of the anodic 1,6-diene cyclization provided a series of five membered ring compounds with addition of one or two methanol molecules with 10 mol% of Ce(OTf)3
Maillos, Philippe. "Formation de liaisons Carbone-Azote par réaction SRN¹ en série aliphatique". Paris 11, 1988. http://www.theses.fr/1988PA112185.
Texto completoLibros sobre el tema "Formation de liaisons C-S"
Lewis, C. S. The C. S. Lewis Bible. New York: HarperOne, 2010.
Buscar texto completoVanderlippe, John M. y VanderLippe John M. The Politics Of Turkish Democracy: Ismet Inonu And The Formation Of The Multi-party System, 1938-1950 (S U N Y Series in the Social and Economic History of the Middle East). State University of New York Press, 2005.
Buscar texto completoMorgan, Marina. Other bacterial diseasesStreptococcosis. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780198570028.003.0023.
Texto completoTrieloff, Mario. Noble Gases. Oxford University Press, 2017. http://dx.doi.org/10.1093/acrefore/9780190647926.013.30.
Texto completoCapítulos de libros sobre el tema "Formation de liaisons C-S"
Eisen, Moris S. "Catalytic C–N, C–O, and C–S Bond Formation Promoted by Organoactinide Complexes". En C-X Bond Formation, 157–84. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12073-2_7.
Texto completoDi Giuseppe, Andrea, Ricardo Castarlenas y Luis A. Oro. "Rhodium Catalysts for C–S Bond Formation". En Topics in Organometallic Chemistry, 31–67. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/3418_2016_171.
Texto completoDella Sala, Giorgio y Alessandra Lattanzi. "C-Other Atom Bond Formation (S, Se, B)". En Stereoselective Organocatalysis, 493–527. Hoboken, New Jersey: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118604755.ch14.
Texto completoKibayashi, C. y N. Yamazaki. "C—C Bond Formation Using Allyltrimethylsilane". En Acetals: O/N, S/S, S/N, and N/N and Higher Heteroatom Analogues, 1. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-030-00042.
Texto completoKibayashi, C. y N. Yamazaki. "C—C Bond Formation Using Organometallic Reagents". En Acetals: O/N, S/S, S/N, and N/N and Higher Heteroatom Analogues, 1. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-030-00041.
Texto completoToffano, M. "Formation of C—S Bonds". En Organophosphorus Compounds (incl. RO-P and RN-P), 1. Georg Thieme Verlag KG, 2009. http://dx.doi.org/10.1055/sos-sd-042-00446.
Texto completoMase, N. "C—S and C—Se Bond Formation". En Water in Organic Synthesis, 1. Georg Thieme Verlag KG, 2012. http://dx.doi.org/10.1055/sos-sd-206-00162.
Texto completoPedersen, C. Th. "By Formation of Two S—S, Three S—C, and One C—C Bond". En Five-Membered Hetarenes with One Chalcogen and One Additional Heteroatom, 1. Georg Thieme Verlag KG, 2002. http://dx.doi.org/10.1055/sos-sd-011-00213.
Texto completoPedersen, C. Th. "By Formation of One S—S, One S—C, and One C—C Bond". En Five-Membered Hetarenes with One Chalcogen and One Additional Heteroatom, 1. Georg Thieme Verlag KG, 2002. http://dx.doi.org/10.1055/sos-sd-011-00217.
Texto completoStien, D. "C—C Bond Formation". En Three Carbon-Heteroatom Bonds: Esters and Lactones; Peroxy Acids and R(CO)OX Compounds; R(CO)X, X=S, Se, Te, 1. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-021-00020.
Texto completoActas de conferencias sobre el tema "Formation de liaisons C-S"
Williams, Spencer. "UNDERSTANDING THE C-S-FE SYSTEMATICS OF THE MARCELLUS FORMATION". En GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-321858.
Texto completoHopple, Sara, Mark Bushfield, Fiona Murdoch y D. Euan MacIntyre. "REGULATION OF PLATELET cAMP FORMATION BY PROTEIN KINASE C". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644512.
Texto completo"Graphite Nanoplatelets and Graphene Oxide Influence on C-S-H Formation". En "SP-329: Superplasticizers and Other Chemical Admixtures in Concrete Proceedings Twelfth International Conference, Beijing, China". American Concrete Institute, 2018. http://dx.doi.org/10.14359/51711218.
Texto completoBarbarulo, R. "The role of C-S-H and temperature in delayed ettringite formation". En International RILEM Workshop on Internal Sulfate Attack and Delayed Ettringite Formation. RILEM Publications SARL, 2004. http://dx.doi.org/10.1617/2912143802.010.
Texto completoSchwarz, N., H. L. McRae, J. Müller, J. Oldenburg, S. Reda, B. Pötzsch y H. Rühl. "Activated Protein C Formation on Endothelial Cells is Impaired in Hereditary Protein C Deficiency Independent of the Type of Protein C Gene Mutation and Residual Activity". En GTH Congress 2024 – 68th Annual Meeting of the Society of Thrombosis and Haemostasis Research – Building Bridges in Coagulation. Georg Thieme Verlag, 2024. http://dx.doi.org/10.1055/s-0044-1779076.
Texto completoAydar, S., S. Alataş, L. Numanoğlu y A. Sönmezdağ. "EFFECT OF ORAL ANTICOAGULANTS ON STABLE ROSETTE FORMATION". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643271.
Texto completode Four, N. J., R. M. Bertina y F. Havgrkate. "STIMULATION OF FIBRINOLYSIS BY ACTIVATED PROTEIN C (APC)". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1642961.
Texto completoBrass, L. F., D. R. Manning y M. J. Woolkalis. "G PROTEIN REGULATORS OF PHOSPHOLIPASE C AND ADENYLATE CYCLASE IN PLATELETS". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644630.
Texto completoDavid, J. L., M. Lambrichts y M. T. Closon. "INFRACLINIC ACTIVATION OF PLATELETS AND FIBRIN FORMATION IN CANCER PATIENTS". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643198.
Texto completoLobel, P., M. Palmer y K. Schor. "CHRONIC ORAL DEFIBROTIDE STIMULATES VASCULAR PGI2 AND INHIBITS ATHEROSCLEROTIC PLAQUE FORMATION IN CHOLESTEROL-FED RABBITS". En XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643150.
Texto completoInformes sobre el tema "Formation de liaisons C-S"
Kontak, D. J., S. Paradis, Z. Waller y M. Fayek. Petrographic, fluid inclusion, and secondary ion mass spectrometry stable isotopic (O, S) study of Mississippi Valley-type mineralization in British Columbia and Alberta. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/327994.
Texto completoDickman, Martin B. y Oded Yarden. Genetic and chemical intervention in ROS signaling pathways affecting development and pathogenicity of Sclerotinia sclerotiorum. United States Department of Agriculture, julio de 2015. http://dx.doi.org/10.32747/2015.7699866.bard.
Texto completoXu, Jin-Rong y Amir Sharon. Comparative studies of fungal pathogeneses in two hemibiotrophs: Magnaporthe grisea and Colletotrichum gloeosporioides. United States Department of Agriculture, mayo de 2008. http://dx.doi.org/10.32747/2008.7695585.bard.
Texto completoChoudhary, Ruplal, Victor Rodov, Punit Kohli, Elena Poverenov, John Haddock y Moshe Shemesh. Antimicrobial functionalized nanoparticles for enhancing food safety and quality. United States Department of Agriculture, enero de 2013. http://dx.doi.org/10.32747/2013.7598156.bard.
Texto completoEGR Cooler Fouling Reduction: A New Method for Assessment in Early Engine Development Phase. SAE International, marzo de 2022. http://dx.doi.org/10.4271/022-01-0589.
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