Dissertations / Theses on the topic 'Couplage de Suzuki-Miyaura'
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Yalcouye, Boubacar. "Synthèse atropo-sélective de la partie biarylique de la (-)-stéganacine via le couplage croisé de Suzuki-Miyaura et le couplage ARYNE." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAF059.
Full textThe interesting biological properties of axially chiral biaryls and the challenge of Csp2-Csp2 bond formation ofthe biaryl motif have aroused keen interest among synthetic organic chemists. The axially chiral biaryls areprivileged structures in medicinal chemistry and in asymmetric catalysis. The goal of our research is based onthe control of the axial chirality of (-)-steganacin using two differents atropo-selective approaches: Suzuki-Miyaura cross-coupling (in presence of transition metals), and ARYNE coupling (without any transitionmetals). The atropo-diastereoselective Suzuki-Miyaura cross-coupling was carried out using enantiopure β-hydroxysulfoxydes as chiral auxiliary. The resulting diastereopure biaryl was converted into an intermediatereported in the literature without any epimerization of axial chirality. The second approach was the atropodiastereoselectiveARYNE coupling which was tested for the first time with the enantiopure p-tolylsulfoxyde.However, we encountered a problem due to lack of reactivity of lithiated arylsulfoxide. Finally, the axialchirality of (-)-steganacin was controlled using oxazolines as chiral auxiliary
Minard, Corinne. "Doubles couplages de Suzuki-Miyaura sélectifs sur des dérivés dihalogénés symétriques - Application à la synthèse de la ningaline B et de ses analogues." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00919884.
Full textBonin-Dubarle, Hélène. "Variations autour de la réaction de Suzuki-Miyaura : nouveaux partenaires et nouveaux ligands." Toulouse 3, 2009. http://thesesups.ups-tlse.fr/1545/.
Full textCarbon-carbon bond formation is a fundamental reaction in organic chemistry. Among the different transition-metal catalysed cross-coupling reactions, the Suzuki-Miyaura reaction is known as one of the most efficient and popular method in academic laboratories and at an industrial level. However, the classically used boronic acids are not very stable. That's why new boronated coupling partners have been developed and successfully used in this type of reaction. Among these new compounds, dioxazaborocanes, obtained by condensation of diethanolamine on boronic acids, are a very good choice, because of their simple purification and their exceptional stability. We developed with our industrial partner a new one-pot synthesis of these derivatives, and then, studied their structure in solution and in a solid state. We also tested different catalytic conditions to obtain the cross-coupling products with excellent yields from halogenated compounds or diazonium salts. We were also interested in developing new ligands and the corresponding palladium complexes to catalyse the Suzuki-Miyaura reaction. In order to get very strong ligand-metal complexes, we chose to develop bidentate ligands, containing an N-heterocyclic carbene and a triazole ring linked by a methylene, by using the Huisgen reaction. The corresponding palladium complexes were then synthesized with good yields. These complexes are excellent catalysts, since we could obtain cross-coupling products in quantitative yields with very low catalyst loading and in very short reaction times
Lobrégat, Virginie. "Immobilisation d'organobores sur resines ioniques et reaction multi-composants pour la synthese de macrocycles par couplage de suzuki-miyaura." Rennes 1, 2000. http://www.theses.fr/2000REN10063.
Full textZink, Laura. "Synthèse de dérivés 5-nitroimidazoles à potentialités anti-infectieuses." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM5506/document.
Full textThe aim of this work consists of the synthesis of new potentially bioactive functionalized 5-nitroimidazoles. Initially, the reactivity study of the 4-bromo-1,2-dimethyl-5-nitro-1H-imidazole under microwave-assisted Suzuki-Miyaura cross-coupling conditions gave new derivatives substituted by various aryl or styryl groups in 4-position. In a second step the 4-[4-(chloromethyl)phenyl]-1,2-dimethyl-5-nitro-1H-imidazole was prepared in order to study LD-SRN1 reactivity with different carbon and sulphur centered nucleophiles. This study pointed the role of the temperature for the electron transfer reactions. Then, new 4-position sulfonyl substituted derivatives were synthesized by SN2 and SNAr reactions between sulfinate anions and three substrates in 5-nitroimidazole series. This synthesis was followed by the development of biological assays on Trichomonas vaginalis. This assay was performed on some of these molecules, which revealed a relation between the structure and the position of the sulfonyl group and the antitrichomonas activity. The last part of this work describes an unexpected and original palladium-catalyzed O-arylation in fluorinated nitro(o-nitrophenyl)imidazole series involving arylboronic acids under Suzuki-Miyaura cross-coupling reaction conditions
Billaud, Célia. "Approche synthétique de la norbadione A : nouvelle préparation d'alcools à partir de sulfones et de dérivés borés." Paris 11, 2005. http://www.theses.fr/2005PA112222.
Full textThe synthetic approach of norbadione A, a pigment from mushrooms related to pulvinic acids, was studied. This compound has the property to complex caesium and has shown an antioxidant activity. The first strategy, based on a double Suzuki-Miyaura coupling between a naphtholactone with two boron functions and two pulvinic moieties with a triflate was unsuccessful and has shown a deactivating effect of the lactone. Modifications aimed to inhibit the electro-attracting character of the lactone permitted to obtain a bis(coupled) product with a poor yield. A second approach based on a the cyclisation of enol arylacetates was studied in order to build the pulvinic moiety in several steps. The important reaction of introduction of an alkylacetate from a triflate was realised by a palladium-mediated coupling. The cyclisation attempts carried out using a naphthalenic compound allowed us to isolate a mono-cyclised product. A parallel study was to first build a tetronic moiety and then to construct the exocyclic double bond by a method developed in the laboratory for the preparation of an iodated pulvinic compound. Finally, a new preparation of alcohols from sulfones and boron compounds was developed. Two known reactions in the chemistry of boron were combined. The first one is the reaction between anions of sulfones and trialkylboranes, the second one is a thermal isomerisation which places the boron atom in a terminal position. A new preparation of primary alcohols was thus carried out
Bochicchio, Antonella. "Towards the atropo-stereoselective total synthesis of myricanol." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAF004/document.
Full textThe myricanol, a natural [7.0]-meta-cyclophane which belongs to the family of strained and cyclic diarylheptanoids, possess an interesting structure and attractive biologically activities (anti Alzheimer and anti cancer properties). Actually only two synthesis of racemic (+/-)-myricanol have been reported in the literature. The goal of this research was to prepare this strained cyclophane in a racemic and then in an atropostereoselective route taking into account the challenging ring closure. Thus a linear diarylheptanoid was prepared using an efficient cross-metathesis reaction followed by an intramolecular Suzuki-Miyaura domino reaction giving rise to the desired cyclophane with 2.55% overall yield in 11 steps. On the other side, the biaryl core of myricanol was envisaged by an intermolecular metallo-catalysed coupling reaction between already highly functionalized fragments, followed by a ring closure metathesis. Two advanced intermediates were already attempted
Lakmini, Hakim. "Etudes mécanistiques de réactions catalysées par des complexes de palladium mettant en jeu des réactifs organoborés : homocouplage et couplage croisé." Paris 6, 2006. http://www.theses.fr/2006PA066498.
Full textLassalas, Pierrik. "Étude de nouvelles méthodologies d’arylation directe en séries azole et pyridine : Application à la synthèse de coeurs de thiopeptides antibiotiques de la série d." Thesis, Rouen, INSA, 2012. http://www.theses.fr/2012ISAM0024/document.
Full textDue to the emergence of multiresistant bacterial strains to standard antibacterial treatments, thiopeptides antibiotics are actually highly considered, though they are known for 60 years. They show an excellent antibiotic activity against multiresistant bacterial strains, and implement two originals inhibition mechanisms of protein synthesis, still unemployed in human therapy. However, the difficulty to prepare these complex macromolecules limits their pharmacological development. The development of a new strategy to synthetize the most complicated part of these macromolecules, their heterocyclic core, is studied here in. This approach is based on the study and the exploitation of novel direct C-H and C-X transition-metal-catalyzed couplings of mono- and bithiazoles units with a broad panel of heteroaromatics. Its viability is here demonstrated trough the multi-step synthesis of the common heterocyclic core of amythiamicins
Desage-El, Murr Marine. "Norbadione A : approche synthétique et étude de complexation du césium." Paris 11, 2003. http://www.theses.fr/2003PA112182.
Full textThis work was dedicated to the study of the synthesis and complexation studies of norbadione A : a pigment originating from a mushroom. A synthetic approach, based on a double Suzuki-Miyaura coupling, was developped. This strategy was applied with high yields to the synthesis of various norbadione A analogues, as well as to the synthesis of simple pulvinic acids. Access to functionnalised precursors of the molecule was also studied and the final coupling remains to be done. Besides, a speciation study based on lectrospray ionization mass spectrometry was conducted with norbadione A and one of the analogues. This study allowed the assessment of the cesium complexation abilities of each molecule. Structural data was also obtained and complexation constans were calculated. Finally, norbadione A and various synthetic products have been tested via high-throughput screening methods and strong antioxidant properties were observed. Other biological results are also reported
Zink, Laura. "Synthèse de dérivés 5-nitroimidazoles à potentialités anti-infectieuses." Electronic Thesis or Diss., Aix-Marseille, 2012. http://www.theses.fr/2012AIXM5506.
Full textThe aim of this work consists of the synthesis of new potentially bioactive functionalized 5-nitroimidazoles. Initially, the reactivity study of the 4-bromo-1,2-dimethyl-5-nitro-1H-imidazole under microwave-assisted Suzuki-Miyaura cross-coupling conditions gave new derivatives substituted by various aryl or styryl groups in 4-position. In a second step the 4-[4-(chloromethyl)phenyl]-1,2-dimethyl-5-nitro-1H-imidazole was prepared in order to study LD-SRN1 reactivity with different carbon and sulphur centered nucleophiles. This study pointed the role of the temperature for the electron transfer reactions. Then, new 4-position sulfonyl substituted derivatives were synthesized by SN2 and SNAr reactions between sulfinate anions and three substrates in 5-nitroimidazole series. This synthesis was followed by the development of biological assays on Trichomonas vaginalis. This assay was performed on some of these molecules, which revealed a relation between the structure and the position of the sulfonyl group and the antitrichomonas activity. The last part of this work describes an unexpected and original palladium-catalyzed O-arylation in fluorinated nitro(o-nitrophenyl)imidazole series involving arylboronic acids under Suzuki-Miyaura cross-coupling reaction conditions
Aroua, Rahma. "Etudes de complexes organométalliques formés par des calixarènes fonctionnalisés par des carbènes N-hétérocycliques." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAF062/document.
Full textA series of new calix[4]arenes bearing one or two imidazoliums units in the lower rim were synthesized as precursors of N-heterocyclic carbenes for the synthesis of the corresponding nickel complexes. All products obtained were characterized by NMR spectroscopy, microanalysis and mass spectroscopy and was revealed to be in cone conformation. The application of Ni-NHC-calix[4]arene in Suzuki-Miyaura cross coupling showed moderate to good conversions. This is been depending on the length of the alkyl chain and the number of the catalytic centers grafted on the platform
Jean-Baptiste, dit Dominique François. "Synthèse et caractérisations physico-chimiques de complexes métalliques comportant des ligands multidentes bis(carbène N-hétérocyclique) fonctionalisés : évaluation catalytique en couplage de Suzuki-Miyaura." Toulouse 3, 2008. http://thesesups.ups-tlse.fr/347/.
Full textSince the pioneer work on metal N-heterocyclic carbenes (NHCs) and the isolation of free thermally stable NHCs, intensive activity research has been focused on the organometallic chemistry of this class of ligands. In this context, we decided to design a new class of amide or alcohol-N-functionalised bis(NHC) ligands. Diimidazolium salt precursors linked together by flexible or rigid, were obtained following short and modular synthetic pathways. Gold(I), Gold(III), Palladium(II) and Nickel(II) complexes were prepared following the carbene-transfer route of silver(I) precursors or by direct metallation of azolium salts in the presence of a mild base. Gold(I) and Ni(II) complexes have been characterized by single crystal X-ray diffraction analyses and the electrochemical and luminescence properties of the Au(I) and Au(III) compounds have been studied. Finally, the catalytic activities of Ni(II) and Pd(II) NHC complexes were evaluated in the Suzuki-Miyaura cross-coupling
Nadal, Brice. "Synthèse et Evaluation de nouveau agents de protection contre les rayonnements ionisants." Phd thesis, Université Paris Sud - Paris XI, 2009. http://tel.archives-ouvertes.fr/tel-00447089.
Full textPayard, Pierre-Adrien. "Mechanistic studies of metal-catalyzed reactions : predicting tools for reaction optimization." Thesis, Paris Sciences et Lettres (ComUE), 2019. http://www.theses.fr/2019PSLEE009/document.
Full textIn this thesis mechanistic studies of metal-catalyzed reactions as well as development of new tools to predict and rationalize the catalytic properties are presented. The boron-tonickel transmetalation step was thoroughly studied by experimental technics (electrochemistry, NMR, kinetics) and DFT calculations, allowing us to solve some of the limitation encountered by the synthetic chemists. In the second part of this thesis the behavior of a family of Lewis acids (triflates and triflimides) is rationalize. Two model reactions (SN and redox) were studied and a new theoretical scale of Lewis acidity was developed based on the charge transferred to the acid allowing us to reproduce and predict the catalytic activity of these salts
Prieur, Vanessa. "Pyrrolo[2,3-d]pyrimidines : conception, synthèse, fonctionnalisation." Thesis, Orléans, 2015. http://www.theses.fr/2015ORLE2072/document.
Full textThe pyrrolo [2,3-d]pyrimidines, also known as 7-deazapurines, are an important class of aromatic heterocycles by their biological potencial (antitumor, anti-inflammatory, antibacterial, etc.). Therefore, this skeleton is a source of interest for the organic chemists. A part of the biological activity, these compounds present also outstanding physicochemical properties (UV-fluorescence); enabling new applications in electronics. The last few years, a great number of researches have been put in execution with a view to synthesizing these molecules, where still few general methods exist to obtain pyrrolo [2,3-d] pyrimidines highly substituted. The aim of these works of thesis is to develop different regioselective and chemoselective synthetic strategies to accede to pyrrolo [2,3-d]pyrimidines diversely substituted and furthemore in a reduced number of steps. First has been synthesized a family of 4,5,6-triarylated-7-methylpyrrolo[2,3-d]pyrimidines including the use of two Suzuki-Miyaura's reactions. Also we contemplated the preparation of a series of 2,4,6-triarylated pyrrolopyrimidines where the aryl group at the position 2 has been introduced under Liebeskind-Srogl reaction conditions. Finally the preparation of 4-aminated pyrrolo [2,3-d] pyrimidines from alkynylpyrimidines has been fine-tuned and diverse derivative compounds have been synthesized
Colombel, Virginie. "Synthèse et étude de l’activité biologique de nouveaux analogues du N-acétylcolchinol." Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10294/document.
Full textN-acetylcolchinol is a semi-synthetic inhibitor of the polymerization of tubulin into microtubules, that showed promising activity as vascular-disrupting agent. However, its toxicity evidenced in phase I clinical trials precluded its further development. This thesis describes the synthesis and biological evaluation of new allocolchicinoids, analogues of N-acetylcolchinol.A racemic synthesis of the dibenzoxepine framework of these compounds was first established. A Suzuki-Miyaura coupling, a Grignard addition and a Brønsted acid-mediated cyclodehydration constituted the key steps of the strategy. Then, three different series of dibenzoxepines have been synthesized, which differ by the nature of the substituent on the oxepine medium ring and on phenyl rings. These new dibenzoxepines were tested against the inhibition of microtubule assembly, leading to a structure-activity relationship study
Omar-Amrani, Rafik. "Arylaminations Intra et Intermoléculaires Catalysées par le Nickel (0) ou le Palladium (0) Ligandés par des Carbènes N-Hétérocycliques. Nouveaux Catalyseurs Hybrides Organique/Inorganique. Application au Couplage de Suzuki-Miyaura." Nancy 1, 2006. http://docnum.univ-lorraine.fr/public/SCD_T_2006_0181_OMAR_AMRANI.pdf.
Full textThe present work is divided into two main parts. In the first part, we describe the use of an in situ generated Ni(0) catalyst associated with 2,2’-bipyridine or N,N’-bis(2,6- diisopropylphenyl)dihydroimidazol-2-ylidene (SIPr) as ligand and NaO-t-Bu as the base for the intramolecular coupling of aryl chlorides with amines. The procedure has been applied to the formation of five-, six-, and seven-membered rings. The use of the Pd(0)/N,N’-bis(2,6-diisopropylphenyl)dihydroimidazol-2-ylidene (SIPr) catalyst for sequential intra- followed by intermolecular aryl amination reaction is also described. The methode has been applied to the synthesis of N-arylated five-, six-, and seven-membered heterocycles. The second part of the work describes first the preparation of a nanohybrid catalyst constituted of Pd(0) nanoparticles stabilized by an oxidized aromatic diamine. This catalyst has been used in Suzuki-Miyaura coupling for the preparation of unsymmetrical biaryls. Performing the reaction in an ionic liquid/H2O medium allows an efficient recycling of the catalyst
Omar-Amrani, Rafik Fort Yves. "Arylaminations Intra et Intermoléculaires Catalysées par le Nickel (0) ou le Palladium (0) Ligandés par des Carbènes N-Hétérocycliques. Nouveaux Catalyseurs Hybrides Organique/Inorganique. Application au Couplage de Suzuki-Miyaura." [S.l.] : [s.n.], 2006. http://www.scd.uhp-nancy.fr/docnum/SCD_T_2006_0181_OMAR-AMRANI.pdf.
Full textGirard-Le, Bleis Pascale. "Nouvelles voies d'accès à des alcaloi͏̈des de type pyrroloimidazolique. Synthèse et réactivité de 2-hydroxymorpholines en série optiquement active." Rennes 1, 2001. http://www.theses.fr/2001REN10104.
Full textChamas, Zein El Abidine. "Chromophores pentacycliques azotés fluorescents : nouvelle cascade diastéréosélective pallado-catalysée et exploration de leurs propriétés biologiques." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0079/document.
Full textThe aim of this work concerns the synthesis of a new family of aza-pentacyclic chromophore whose fluorescence properties can be modulated according to the functional groups present in the molecule. These chromophores were obtained through a cascade process between 2-formylbenzene boronic acid and 2,5-dihalopyridines. The cascade process is initiated by a palladium-catalyzed cross-coupling reaction and is followed by two successive nucleophilic cyclizations; the first cyclization performed on the pyridine nitrogen and the second occurred regioselectively on the adjacent carbon atom. This new cascade reaction allowed the formation of a pentacycle as a single regioisomer with four new bonds and two contiguous stereocenters with trans relationships. In addition, preliminary studies have shown that these polycyclic compounds have excellent fluorescence properties as well as biological properties that should enable us to extend the scope of these new chromophores to the medical field and molecular electronics
Cohen, Potier de Courcy Anita. "Synthèse et évaluation antiparasitaire de nouveaux dérivés du thiazole et apparentés." Electronic Thesis or Diss., Aix-Marseille, 2012. http://www.theses.fr/2012AIXM5503.
Full textThe objective of this work consists of the synthesis and the antiparasitic in vitro evaluation of new thiazole derivatives and related structures. Several synthetic strategies aiming at the pharmacomodulation on mono- and polycyclic series have been studied: in 2-methyl-5-nitrothiazole series, the anti-Trichomonas pharmacomodulation on position 4 by SRN1 strategy did not improve the activity previously demonstrated in 2-methyl-5-nitroimidazole series, but led to derivatives displaying a selective in vitro antiproliferative activity toward the HepG2 cell line. In 4-arylsulfonylmethyl-2-methylthiazole series, the pharmacomodulation on position 5, by Suzuki-Miyaura cross-coupling reaction on the one hand, and by direct arylation and intramolecular Knoevenagel reaction on the other hand, led to mono- and polycyclic derivatives among which some displayed an encouraging in vitro antiplasmodial activity. In 5H-thiazolo[3,2-a]pyrimidin-5-one series, a double Suzuki-Miyaura cross-coupling reaction revealed that the phenyl group on position 6 contributes to the antiplasmodial effect of this series. Finally, the in vitro biological evaluation of the thieno[3,2-d]pyrimidin-4(3H)-one scaffold let to characterize the pharmacophore responsible for the significant antiplasmodial activity. Some preliminary encouraging results regarding a mechanistic antiplasmodial study show the specific inhibition of plasmodial kinases, as a potential mechanism of action of some of these compounds
Kabri, Youssef. "Synthèse, pharmacomodulation et évaluation biologique de nouveaux dérivés de quinazoline à visées antiparasitaire et anticancéreuse." Thesis, Aix-Marseille 2, 2010. http://www.theses.fr/2010AIX22951/document.
Full textThis work focuses on the synthesis of new bioactive quinazoline derivatives under microwave irradiation. In the first chapter, we indicate the main methods for preparing the quinazoline ring, the pharmacological properties associated to the quinazoline-derivated drug compounds and we present the SRN1 reaction updated bibliography. In the second chapter, the synthesis and reactivity of 2-chloromethyl-3-methylquinazolin-4(3H)-one with nitronate and sulfinate anions are successively described. A mechanistic study permits to demonstrate the SRN1 radical chain mechanism for the reaction with nitronate anions and a SN2 one for sulfinate anions. Afterwards, we prepared new original quinazolines, under microwave irradiation, by studying SNAr and Suzuki-Miyaura coupling reactions in 4-chloroquinazoline series. From these results, we have developed a regioselective Suzuki-Miyaura reaction on the 4,7-dichloro-2-(2-methylprop-1-enyl)-6-nitroquinazoline and prepared a new series of highly functionalized 4,7-diarylquinazolines. Finally, the biological evaluation of the products prepared by SNAr, showed interesting antiplasmodial and anti-leishmania activities along with EGFR1 inhibition properties
Donati, Ludovic. "L' unité ortho-bromobenzamide : étude de la réactivité en couplage organopalladié et application à la synthèse de pyridopyrroloisoquinolones et de phénanthridinones à potentialité thérapeutique." Paris 5, 2010. http://www.theses.fr/2010PA05P636.
Full textTopoisomerase I constitutes a validated target for the research of new anticancer agents. Two new series of aza-analogues of natural benzophenanthridine alkaloids nitidine and fagaronine were envisaged: pyridopyrroloisoquinolones and pyridopyrroloquinolones. During the synthesis of theses compounds, new tricyclic and tetracyclic heterocycles were unexpectidly obtained. Mechanistical investigations (NMR, mass and DFT) were carried out to understand the formation of the tricyclic compounds starting from orthobromobenzamide unit. The results of this study permitted to present a catalytic cycle including the passage through a transient Pd(IV) species. A small library of thirty compounds has been prepared
Colombel, Virginie. "Synthèse et étude de l'activité biologique de nouveaux analogues du N-acétylcolchinol." Phd thesis, Université Claude Bernard - Lyon I, 2009. http://tel.archives-ouvertes.fr/tel-00654345.
Full textCohen, Potier de Courcy Anita. "Synthèse et évaluation antiparasitaire de nouveaux dérivés du thiazole et apparentés." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM5503.
Full textThe objective of this work consists of the synthesis and the antiparasitic in vitro evaluation of new thiazole derivatives and related structures. Several synthetic strategies aiming at the pharmacomodulation on mono- and polycyclic series have been studied: in 2-methyl-5-nitrothiazole series, the anti-Trichomonas pharmacomodulation on position 4 by SRN1 strategy did not improve the activity previously demonstrated in 2-methyl-5-nitroimidazole series, but led to derivatives displaying a selective in vitro antiproliferative activity toward the HepG2 cell line. In 4-arylsulfonylmethyl-2-methylthiazole series, the pharmacomodulation on position 5, by Suzuki-Miyaura cross-coupling reaction on the one hand, and by direct arylation and intramolecular Knoevenagel reaction on the other hand, led to mono- and polycyclic derivatives among which some displayed an encouraging in vitro antiplasmodial activity. In 5H-thiazolo[3,2-a]pyrimidin-5-one series, a double Suzuki-Miyaura cross-coupling reaction revealed that the phenyl group on position 6 contributes to the antiplasmodial effect of this series. Finally, the in vitro biological evaluation of the thieno[3,2-d]pyrimidin-4(3H)-one scaffold let to characterize the pharmacophore responsible for the significant antiplasmodial activity. Some preliminary encouraging results regarding a mechanistic antiplasmodial study show the specific inhibition of plasmodial kinases, as a potential mechanism of action of some of these compounds
Le, Thanh Dung. "Les ligands amidines N-phosphorées : synthèse, structure, réactivité, coordination et catalyse." Toulouse 3, 2008. http://thesesups.ups-tlse.fr/811/.
Full textThis thesis deals with the preparation, the reactivity, the coordination chemistry and the use of N-phosphorus amidine ligands in the Suzuki-Miyaura catalytic reaction. First, we have developped a straightforward synthesis of a new family of monodentate and bidentate ligands, the N-phosphinoformamidines (R' = H) and the N-phosphinoamidines (R' =/ H) R"2N-C(R')=N-PR2. Then, an unprecedented study regarding the reactivity of these compounds towards Brönsted et Lewis acids was carried out. Theoretical calculations enabled us to rationalize our experimental results. Finally, the coordination chemistry of these monodentate and bidentate ligands, N-phosphorus amidines, with various palladium(II) precursors was studied and we have showed the potential of our ligands in the catalytic Suzuki-Miyaura coupling reaction between boronic acid and p-bromoanisol in the presence of palladium(II)
Beaumont, Stéphane. "Synthèse d'indolobenzazépinones par des réactions de couplages catalysées au palladium et des réactions multicomposants : pharmacomodulation, propriétés antimitotiques et antitumorales. Aminohydroxylation d'indoles catalysée par des complexes de rhodium." Paris 11, 2008. http://www.theses.fr/2008PA112364.
Full textThis manuscript describes the synthesis of indolobenzazepinone analogues, the study of their cytotoxic and antimitotic properties and the development of a rhodium complex-catalyzed 2,3-aminohydroxylation of indoles. The first part of this work deals with the preparation of indolobenzazepinones using two palladium catalyzed coupling reactions. The first one implicates an intermolecular Suzuki-Miyaura cross-coupling between 3-iodoindole and N-Boc-α-alkylbenzylamine boronic acids. The second is an intramolecular direct arylation allowing formation of the biaryl bond. Cytotoxic and antimitotic activities of these compounds were evaluated. The most active compounds also showed in vitro antivascular and antiangiogenic properties. The second part describes access to indolob enzazepinones and isomeric paullone analogues having exocyclic amide groups by application of the Ugi four component reaction to a bifunctional aldehyde-acide. Cytotoxic and antimitotic activities of all synthesized compounds were evaluated. Finally, rhodium catalyzed nitrene transfer using hypervalent iodine reagents and oxygenated nucleophiles was studied and shown to allow aminohydroxylation of indoles. Application of optimized experimental conditions allowed efficient synthesis of 2,3-aminohydroxylindolines with a trans stereochemistry using methanol or a cis strereochemistry using carboxylic acids
Horhant, David. "Borylation pallado-catalysée et couplages de Suzuki-Miyaura boro-sélectifs." Rennes 1, 2005. http://www.theses.fr/2005REN1S079.
Full textAdidou, Ouissam. "Ligands dérivés de saccharides et, ou supportés par un bras poly(éthylène) glycol : synthèse et applications en catalyse organométallique." Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10171.
Full textLigands derived from saccharides and, or supported on poly(ethylene) glycol arm: synthesis and applications in organometallic catalysis. The synthesis of two types of ligands has been investigated. The first family of ligands has been the preparation of new ligands derived from D-glucosamine or D-glucose, which have been tested in the allylic substitution of Tsuji-Trost in homogeneous phase. The second one has een the preparation of ligand supported on poly(ethylene) glycol arm and derived from D-glucosamine or di-(2- pyridyl)methylamine. These last hydrosoluble ligands have been tested in two Pd-catalyzed reactions in aqueous phase: the allylic substitution of Tsuji-Trost and the cross-coupling Suzuki-Miyaura reaction, respectively
Lassalas, Pierrik. "Étude de nouvelles méthodologies d'arylation directe en séries azole et pyridine : Application à la synthèse de coeurs de thiopeptides antibiotiques de la série d." Phd thesis, INSA de Rouen, 2012. http://tel.archives-ouvertes.fr/tel-00857574.
Full textKabri, Youssef. "Synthèse, pharmacomodulation et évaluation biologique de nouveaux dérivés de quinazoline à visées antiparasitaire et anticancéreuse." Electronic Thesis or Diss., Aix-Marseille 2, 2010. http://www.theses.fr/2010AIX22951.
Full textThis work focuses on the synthesis of new bioactive quinazoline derivatives under microwave irradiation. In the first chapter, we indicate the main methods for preparing the quinazoline ring, the pharmacological properties associated to the quinazoline-derivated drug compounds and we present the SRN1 reaction updated bibliography. In the second chapter, the synthesis and reactivity of 2-chloromethyl-3-methylquinazolin-4(3H)-one with nitronate and sulfinate anions are successively described. A mechanistic study permits to demonstrate the SRN1 radical chain mechanism for the reaction with nitronate anions and a SN2 one for sulfinate anions. Afterwards, we prepared new original quinazolines, under microwave irradiation, by studying SNAr and Suzuki-Miyaura coupling reactions in 4-chloroquinazoline series. From these results, we have developed a regioselective Suzuki-Miyaura reaction on the 4,7-dichloro-2-(2-methylprop-1-enyl)-6-nitroquinazoline and prepared a new series of highly functionalized 4,7-diarylquinazolines. Finally, the biological evaluation of the products prepared by SNAr, showed interesting antiplasmodial and anti-leishmania activities along with EGFR1 inhibition properties
TICHKOWSKY, ISABELLE. "Syntheses totales de la monocilline et du radicicol via des couplages de miyaura-suzuki." Paris 6, 1996. http://www.theses.fr/1996PA066412.
Full textKuleshova, Olena. "2-azahetaryl-3-enaminonitriles cycliques pour la synthèse d'azahétérocycles fonctionnalisés, la complexation de métaux et la conception de sondes optiques." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30127/document.
Full textThe research carried out in the course of this PhD work is centered on cyclic 2-azahetaryl-3-enaminonitrile derivatives which represent an attractive scaffold due to its high number of potential reactive sites. Regioselective functionalization of each site may give access to various structurally different Nitrogen-containing moieties featuring an azaheterocycle substituent. One first application in heterocyclic synthesis of 2-azahetaryl-2-(1-R-pyrrolidin-2-ylidene)acetonitriles, readily accessed from available and cheap starting materials, is their involvement in Knorr-type synthesis of pyrazoles (isoxazoles) where they play the role of the 1,3-dielectrophiles. Thus 4-azahetaryl-3-(ω-aminopropyl)-1H-pyrazole (isoxazole)-5-amines are formed with complete regioselectivity in good yields 50-85%. This establishes an efficient and easily reproducible two-step approach to heterocycle- substituted amino-pyrazoles from heterocyclic acetonitriles. Unprecedented subsequent transformations were carried out providing an access to regioselectively derivatized polyamino azoles, tetracyclic compounds in up to 45% overall yield and arylated pyrazoles in up to 71% yield through diazotization, followed by arylation through Suzuki-Miyaura cross-coupling or C-H activation. We illustrated the unprecedented but efficient nitrogen protection as a nitrosamine during the Pd-catalyzed cross-coupling. Also the possibility of pyrazoles C-H activation in order to get densely substituted pyrazoles was shown for the first time. We also performed the quaternarization of the nitrogen of the heterocycle to investigate the effect of a cationic moiety on the regioselectivity of the reaction of such azahetaryl-3-enaminonitrile derivatives with 1,2-binucleophiles. The increased electron demand on the heterocycle induced a reaction path shift that produced the azole ring- opened product. Derivatives of benzoxazole and benzimidazole form second way products straight away, while the one of benzothiazole undergoes the "classical" transformation pathway and subsequent nucleophilic substitution at C-2 center of benzothiazole leading to azepine cycle formation. In the case of benzoxazolyl substituted enaminonitriles under the same conditions both regioisomers are formed. Formylation reaction of 2-(benzo[d]thiazol-2-yl)-2-(pyrrolidin-2-ylidene) acetonitrile with N,N-dimethylformamide dimethyl acetal (DMF DMA), followed by further reamination and cyclization under basic conditions gave rise to pyrrolo[3,2-c]pyridine-6-imine, a compound that exhibits a high fluorescent quantum yield (Φ = 61%) and proved to be very sensitive to protonation. Both characteristics are expected to be useful to develop an unprecedented water detection test for aprotic solvents. We have demonstrated that such a fluorometric method for determining water content in DMSO presents a limit of detection of 0.068%. From other enaminonitriles reactions with DMF DMA provided either a mixture of methylated and formylated products, or only methylated products (few adducts also shown non reactivity). These observations prompted us to assume that the presence of easily accessible NH group is essential in formylation of the C-3 center of pyrrolidine allowing to propose a mechanism for this uncommon reaction. 2-Azahetaryl-2-(pyrrolidin-2-ylidene)acetonitriles and their 3-oxo-benzo- analogues were also used to create: a) visible spectrophotometric probes for Zn(II) b) water stable BF2-rigidified complexes that overcome the limitations of BODIPY-dyes and have Stokes shifts up to 9000 cm-1, emission at violet-blue range, fluorescence both in solution (Φ up to 90%) and crystalline state; c) films of polymeric composites exhibiting photovoltaic effect
Danton, Fanny. "Élaboration de N,S-acétals cycliques et leur transposition en 1,4-thiazines selon des processus en cascade : Nouveaux inhibiteurs de la farnésyltransférase." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMLH31.
Full textHeterocyclic chemistry is a central element of the chemical sciences that contribute strongly to drug design as well as to new materials with novel properties. While aza-heterocycles from natural and synthetic sources are the most widely represented, aza-sulphur compounds remain relatively unexplored and therefore are still a source of innovation for the exploration of a new chemical space.This thesis project is focused in particular on thiazolidines fused or not, generally carrying a substituent in acetalic position. The main goal of this project is to better understand the reactivity of these cyclic N,S-acetal systems scarcely studied compared to their hetero- analogues N,O- and N,N-acetals.During this study, we were able to determine new optimal conditions for Morin transposition of these N,S-acetals into corresponding 1,4-thiazines. They proceeded in two steps via sulfoxides or directly from their sulphides congeners by an original cascade process using several oxidizing agents. The subsequent diversification of these systems by CSP2-CSP2 coupling and by direct C-H functionalization has provided access to several new families of compounds with particularly promising inhibitory properties of the farnesyltransferase
Desforges, Alexandre. "Nucléation et croissance de nanoparticules métalliques dans une matrice organique poreuse : application à la catalyse." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2004. http://tel.archives-ouvertes.fr/tel-00813982.
Full textAmaral, Patrícia de Aguiar. "Síntese de δ-valerolactones e avaliação biológica : citotóxica, analgésica e antiinflamatória." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/14883.
Full textA pesquisa e desenvolvimento de medicamentos é um processo complexo e longo que se inicia com a pesquisa básica de um novo composto bioativo em modelos experimentais in vitro e pré-clinicos. Neste trabalho descreve-se a síntese de d-valerolactonas e avaliação biológica. Uma primeira rota sintética permitiu obter análogos das kavalactones com bons rendimentos através de reações de aldolisação e acoplamentos do tipo Heck e Suzuki com o auxílio do forno de microondas. Paralelamente outra estratégia sintética foi realizada através de modulações no anel aromático ligado ao núcleo lactônico, com reações do tipo Heck, Suzuki e Sonogashira, com excelentes rendimentos. Outra sequência reacional foi desenvolvida a partir de álcoois alílicos utilizando a reação conhecida como tandem isomerisação/aldolisação com diversos aldeídos obtendo lactonas substituídas em posição 3, 5 e 6 do ciclo lactônico. Objetivou-se também neste estudo, a partir do princípio da química combinatória, preparar uma pequena quimioteca de d-valerolactones. Para tanto se desenvolveu uma seqüência reacional a partir do suporte fluorado em função das vantagens deste método em relação à Síntese Orgânica em Fase Sólida (SOFS), esta rota sintética foi acompanhada em solução. No que se refere ao aspecto biológico, foram avaliados 35 compostos sintetizados sobre a atividade citotóxica. No entanto apenas um composto apresentou uma leve atividade (CI50 < 10μM) sobre as linhagens celulares testadas (A-375M e B16). Em relação à avaliação antiinflamatória in vitro observou-se atividade interessante sobre o composto 61 na inbição do TNFa no sangue total. A avaliação do potencial antinociceptivo dos 10 compostos testados (5, 129-137) demonstrou um perfil promissor, sendo que o composto 131 apresentou uma inibição mais expressiva (69,4%) em relação aos outros compostos. Os resultados químicos e biológicos promissores aqui demonstrados indicam a viabilidade em utilizar essa classe química estudada para encontrar substâncias mais ativas as quais podem representar uma nova entidade terapêutica.
This work describes the synthesis and the pharmacological evaluation of various δ-valerolactone derivatives. We first prepared some kavalactone analogues in good yields using microwave-promoted palladium-catalyzed coupling reactions. Several modulations have been done using Heck, Suzuki and Sonogashira reactions. At the same time, we developed a synthetic pathway starting from allylic alcohols and involving a tandem isomerisation-aldolisation reaction with various aldehydes in order to introduce diversity at the C-3, C-5 and C-6 positions of the valerolactone. We focused on the combinatorial chemistry in order to obtain a library of δ-valerolactone derivatives. The Heck coupling was followed by an isomerisation-aldolisation reaction using a fluorated support. The purification steps were much easier using fluorated supports. However, so far this synthetic pathway is only valid in solution. We then tested 34 d-valerolactones analogues to determine their in vitro cytotoxic activity and discovered that one d-valerolactone was slightly active (CI50 < 10μM) on two cell lines (A-375M and B16). Moreover, the in vitro inhibitor effects on whole blood sample showed that δ-valerolactone derivatives might have an interesting antiinflammatory activity. Finally, the in vivo acetic acid test evaluating the analgesic activity of several compounds displayed a high inhibition for the heterocyclic 131 (69.4%).
Beaumard, Floriane. "Synthèse de nouveaux ligands du récepteur sensible au calcium : développement et application des couplages de Suzuki-Miyaura "one-pot" simultanés à la synthèse d'alcaloïdes pyrroliques." Paris 11, 2009. http://www.theses.fr/2009PA112356.
Full textThis manuscript describes the synthesis of new ligands for the calcium sensing receptor, the development of a simultaneous «one-pot» double Suzuki-Miyaura coupling methodology and its application to the synthesis of nonsymmetrical pyrrole alkaloids. Calindol, a calcimimetic previously discovered in the laboratory, shows an in vitro activity similar to Cinacalcet, used clinically for the treatment of hyperparathyroidism, but poor bioavailability. Thus, a study of the structure-activity relationships of this compound was first realized allowing us to discover new ligands up to seven times more potent than Calindol in vitro. Ln vivo tests are in progress. A strategy based on the rigidification of Calindol by the introduction of a pyrrolidine ring was then explored but without success. Ln contras t, the introduction of a pyrrole ring was successful and led to the development of a new calcilytic family. Secondly, a controlled mono Suzuki-Miyaura cross-coupling was developed on symmetrical dibromopyrrole to give access to non-symmetrical 2,5-diarylpyrroles in two steps. The methodology was extended to an unprecedented simultaneous «one-pot » procedure which allowed us to obtain the same compounds in one step with high yields. Other symmetrical dibromoheterocycles and aIso 1 ,n-dihalobenzenes were engaged with success in this procedure. Lts application to the synthesis of non-symmetrical analogues of pyrrole alkaloids was then investigated. Five new compounds, derivatives of storniamide A, lamellarine 0 and lukianol A, were easily synthesized by this convergent and efficient strategy
Ren, Hui. "Synthèses, caractérisation et étude structurale de complexes de type carbènes N-hétérocycliques basés sur des Calix[4]arènes." Thesis, Lyon 1, 2014. http://www.theses.fr/2014LYO10315.
Full textThis thesis will focus on development of N-heterocyclic carbene palladium complexes based on calix[4]arenes: from synthesis, characterization and structural study to evaluation of catalytic activity. A new series of calix[4]arene supported N-heterocyclic carbene palladium complexes was developed and fully characterized. A mono-substituted calix[4]arene was prepared through conventional procedures, following with the attachment of imidazolyl derivative groups to compose the precursors of novel NHCs ligands. Undergoing the alkylation with n-butylbromide and corresponding metallation with palladium and pyridine, original complexes were obtained. After a full characterization in solution and solid state, the evaluation of catalytic activity was undertaken through Suzuki-Miyaura cross-coupling reactions which revealed good performances. The conformational study as well as the catalytic results in catalysis did not allow putting in evidence a supramolecular effect of the macrocycle cavity towards the coupling process. With the aim of localize catalytic center inside of the cavity, steric constrain was involved in the form of new Pd-NHC-complexes. Dimeric Pd complexes were synthesized and fully characterized as well. Several approaches to construct intramolecular linkers for fixing the conformation were elaborated. The conception of ‘flexible steric bulky’ inspired the research on confined structure of calix[4]arene, such as encapsulation and capped configuration. Relative progresses were carried out and discussed
Kukkadapu, Krishna Kishore. "Gamma-Borylated allylic acetates as 3 carbons functionalized units : synthesis and applications." Thesis, Rennes 1, 2013. http://www.theses.fr/2013REN1S040/document.
Full textVinylboranes, vinylboronic acids and vinylboronates are organoboranes where the electro negativity difference between carbon and boron bond is very low [C (2. 55)-B (2. 04)] and the bond between them is less polar. The characteristic features of borane allow performing wide range of reactions under different conditions. Several research groups explored the synthetic applications of organoboranes in organic synthesis. For example vinylboranes can be transformed to their corresponding alkenes via protonolysis,can be easily oxidized by hydrogen peroxide in presence of base(addition of hydroxy group at double bond)to result cis-,anti Markovnikov products also participate in addition reactions to give allylic alcohols,they undergo[4+2]cyclo adition reactions to form two new carbon- carbon bonds via Diels- Alder reaction. Vinylboronic acids can be transformed to vinylhalides via halogenolysis,react via boron-tethered radical cyclisation using Corey’s catalytic tributyl-stannane method in presence of radical initiator to afford 1,3- or 1,4-diols,participates in palladium catalyzed Suzuki cross coupling reactions to give characteristic carbon-carbon bond,react with anhydrides to result various unsaturated ketones via palladium and rhodium catalysis,vinylboronic acids were also used for the synthesis of new carbon-nitrogen,carbon- oxygen, carbon-fluoine bonds via palladium and copper catalysis. Vinylboronates were used to synthesize new carbon-carbon bonds via Suzuki- Miyaura cross coupling reaction under palladium catalysis, participates in Petasis multicomponent reaction to give functionalized nitrogen based heterocycles, they undergo olefin cross-metathesis to afford highly functionalized vinylboronate deivaives, readily react with carbene generated from diazo compounds to afford cyclopropane derivatives under palladium and rhodium catalysis. Vinylboronates on treatment with arylnitrile oxides undergo 1,3-dipolar cyclo addition reaction to give isoxazole derivatives, vinylboronates were also used as nucleophiles in allylation with copper and palladium catalysisThe above transformations of organoboranes provide important precursors for building complex bioactive molecules which were developed as medicine, agrochemicals, pharmaceuticals and fine chemicals. Organoboranes can be easily synthesized and this easy access for preparation made them useful key intermediates for organic synthesis. Vinylboranes can be synthesized via hydroboration of alkynes with alkylboranes,vinylboronic acids can be synthesized via hydroboration of alkynes with alkoxyboranes followed by hydrolysis where as vinylboronates were synthesized from organometallic reagents by transmetallation with trimethyl orthoborate,also prepared from hydroboration of alkynes with alkoxyboranes. Grafting a substitution in the allylic position of vinyl boronates confers to these units a high degree of versatility to their use in organic synthesis. -substitue
Le, Meur Mikaël. "Identification de nouveaux inhibiteurs de l’agrégation de la protéine Tau." Thesis, Orléans, 2014. http://www.theses.fr/2014ORLE2046.
Full textTAU pathology is a brain lesion common to more than twenty neurodegeneratives diseases. It consists of the abnormal aggregation of the microtubule-associated protein TAU into neurofibrillary tangles. While mechanisms underlying TAU aggregation are not fully understood yet, we have been investigated the synthesis and the biological evaluations of novel class of TAU aggregation inhibitors involved in Alzheimer’s disease. The first two parts of this work reports the synthesis of various imidazo[2,1-b]thiazoles molecules, on which are substituted (het)aryles groups. The third and last part is devoted to the formation of some di-/trisubstituted novel N-fused ring system such as thiazolo[3,2-b]triazoles. In order to provide a functional diversity and generate a therapeutic effect, the peaks C-2, C-3, C-5 and C-6 were functionalized on the imidazo[2,1-b]thiazole ring. It was also the opportunity to develop news synthetic methodologies such as a new Suzuki-Miyaura reaction, a multicomponent reaction, and an electrophilic condensation. On the thiazolotriazole core, an effective procedure of CH activation was performed. More than two hundred original molecules were synthesized, and more than half were evaluated in vitro. A fluorescence technique allowed us to determine the inhibition of TAU aggregation, using the particular K18 protein as a truncated model of normal TAU protein
Fortun, Solène. "Étude de ligands de type biguanide dans le couplage de Suzuki-Miyaura dans l'eau." Thèse, 2018. http://hdl.handle.net/1866/22630.
Full textKairouz, Vanessa. "Design, synthèse et application en catalyse verte d’un ligand alkyl imidazolium β-cyclodextrine." Thèse, 2014. http://hdl.handle.net/1866/11464.
Full textChemistry keeps evolving in new directions. Research has provided improved methodologies for the design and synthesis of targeted molecules. At the same time, the 21st century is witnessing increasing concern about the environmental impacts of chemical wastes. A new philosophy of chemical research and engineering has emerged, known as «Green chemistry». This concept encourages the design of products, processes and technologies that minimize the use and generation of hazardous substances. Therefore, there is an urge to develop environmentally friendly process to convert molecules into product of interest. In the present thesis, we describe the synthesis, characterization and catalytic properties of a novel alkylimidazolium-modified β-cyclodextrin (-CD). Our strategy was to construct a single amphiphilic bimodal ligand by the combination of a mass transfer unit (-CD), covalently bound to a ligand moiety (alkylimidazolium, an N-heterocyclic carbene (NHC) precursor) for aqueous catalysis. First, we demonstrated that the introduction of a dodecyl chain on the imidazolium moiety attached to the primary face of a native β-CD allows the formation of a highly active micellar self-assembled catalytic system in neat water with remarkable recyclable properties for the Suzuki–Miyaura coupling. In addition, we studied the versatility of this self-assembled bimodal system by performing Heck coupling in neat water.
Charbonneau, Mathieu. "Utilisation du motif imidazole en transport d'anions et en catalyse organométallique." Thèse, 2014. http://hdl.handle.net/1866/11459.
Full textThe imidazole moiety is a 5-membered heterocyclic ring, containing 2 nitrogen atoms and 3 carbon atoms. It possesses interesting physico-chemical properties that make it an interesting choice for various uses. One of its most interesting properties is structural versatility, accessible by the simple alkylation of the two nitrogen atoms leading to the formation of an imidazolium salt. These salts are excellent N-heterocyclic carbene (NHC) precursors and are frequently used to synthesize ligands used in organometallic catalysis. In addition, imidazolium salts possess anionophoric properties, allowing their use in anion transmembrane transport. The current work contains the results of research in these two fields: catalysis and anion transport. First, the properties of imidazole derivatives were used to synthesize a palladium-NHC catalyst that was used for the Suzuki-Miyaura coupling in neat water. The efficiency of this catalyst was demonstrated by using loading as low as 0,001 mol% to get quantitative yields. It is the first occurrence of a heterogeneous and recyclable process in neat water using a NHC-Pd catalyst without the need to use either a co-solvent or an additive. The recycling was demonstrated by performing 10 consecutive runs of the reaction, without observing any diminishing of the catalyst’s activity. Second, many imidazolium salts were tested as transmembrane chloride anion carriers. The intrinsic properties of these salts that make them potent anion transporters were elucidated. Specifically, small modifications to the structure of these salts turned out to allow better self-association by π-stacking interactions and to increase their activity. Similarly, changing the counter-anion of these salts affected their transport effectiveness. Moreover, the transport properties were studied and showed the formation of transmembrane channels that allow the diffusion of chloride anions, but also of protons and calcium ions. The interest of this research lies in the possible treatment of various pathologies that originate from faulty anion transport. In addition, the bactericidal properties of imidazolium salts were also identified and may prove useful in the future work.