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Artykuły w czasopismach na temat "C]pyrazole":
Abaszadeh, Mehdi, Hassan Sheibani i Kazem Saidi. "The Condensation of (Chlorocarbonyl)phenyl Ketene with Bisnucleophiles. Synthesis of 4-Hydroxy-5-phenylpyro-[2,3-c]pyrazol-6-ones and Formation of Pyrazolo[1,2-a]pyrazole-triones by Hydrogen Exchange in Unstable Mesoionic Compounds". Australian Journal of Chemistry 63, nr 1 (2010): 92. http://dx.doi.org/10.1071/ch09344.
Sophy, Mohamed Ahmed Elian, i Mohamed Ahmed Mahmoud Abdel Reheim. "Synthesis of Some New 1, 3, 4-Oxadiazole, Pyrazole, and Pyrimidine Bearing Thienopyrazole Moieties". Current Organic Synthesis 17, nr 8 (28.10.2020): 661–70. http://dx.doi.org/10.2174/1570179417999200730215318.
Lindsay-Scott, Peter J., i Eloise Rivlin-Derrick. "Regiocontrolled Synthesis of 6,7-Dihydro-4H-pyrazolo[5,1-c][1,4]oxazines". Synthesis 52, nr 01 (8.10.2019): 105–18. http://dx.doi.org/10.1055/s-0037-1610734.
Gerster, Holger, Michael Keim i Gerhard Maas. "Cycloaddition reactions of acetylenic iminium salts and diazoacetates leading to pyrazole iminium salts". Zeitschrift für Naturforschung B 74, nr 4 (24.04.2019): 347–55. http://dx.doi.org/10.1515/znb-2019-0001.
Bertolasi, Valerio, Paola Gilli, Valeria Ferretti, Gastone Gilli i Cristina Fernàndez-Castaño. "Self-assembly of NH-pyrazoles via intermolecular N—H...N hydrogen bonds". Acta Crystallographica Section B Structural Science 55, nr 6 (1.12.1999): 985–93. http://dx.doi.org/10.1107/s0108768199004966.
Milišiūnaitė, Vaida, Rūta Paulavičiūtė, Eglė Arbačiauskienė, Vytas Martynaitis, Wolfgang Holzer i Algirdas Šačkus. "Synthesis of 2H-furo[2,3-c]pyrazole ring systems through silver(I) ion-mediated ring-closure reaction". Beilstein Journal of Organic Chemistry 15 (14.03.2019): 679–84. http://dx.doi.org/10.3762/bjoc.15.62.
Thirunarayanan, Ganesamoorthy, i K. Ravi. "Synthesis and Spectral Correlation Study of some 3-(3,4-dichlorophenyl)-5-(Substituted Phenyl)-4,5-dihydro-1H-Pyrazole-1-yl-Ethanones". International Letters of Chemistry, Physics and Astronomy 19 (październik 2013): 44–57. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.19.44.
Lerner, Hans-Wolfram, Günter Margraf, Tonia Kretz, Olav Schiemann, Jan W. Bats, Gerd Dürner, Fabrizia Fabrizi de Biani, Piero Zanello, Michael Boltea i Matthias Wagner. "Redox Behaviour of Pyrazolyl-Substituted 1,4-Dihydroxyarenes: Formation of the Corresponding Semiquinones, Quinhydrones and Quinones". Zeitschrift für Naturforschung B 61, nr 3 (1.03.2006): 252–64. http://dx.doi.org/10.1515/znb-2006-0304.
Ramadan, El Sayed, Essam M. Sharshira, Ramadan I. El Sokkary i Noussa Morsy. "Synthesis and antimicrobial evaluation of some heterocyclic compounds from 3-aryl-1-phenyl-1H-pyrazole-4-carbaldehydes". Zeitschrift für Naturforschung B 73, nr 6 (27.06.2018): 389–97. http://dx.doi.org/10.1515/znb-2018-0009.
Çetin, Adnan, Ishak Bildirici i Selçuk Gümüş. "Novel Pyrazole Derivatives Having Mono/Di Chiral Centered Group as Organocatalyst for Henry Reaction". Macedonian Journal of Chemistry and Chemical Engineering 39, nr 1 (9.06.2020): 17. http://dx.doi.org/10.20450/mjcce.2020.1954.
Rozprawy doktorskie na temat "C]pyrazole":
Ostache, Nicu-Carmin. "Synthèse et fonctionnalisation de bicycles 5-5 polyazotés : pyrazolo[3,4-d]thiazoles et pyrazolo[3,4-c]pyrazoles". Thesis, Orléans, 2019. http://intranet.univ-orleans.fr/bibliotheques/theses/nicu-cosmin-ostache_3378_vm.pdf/.
Nitrogen-rich fused bicyclic structures are undisputedly one of the most used scaffolds for therapeutic use.The 5:5 polynitrogenated bicycles are moieties considerably less documented then their 6:6 or 6:5analogues. Despite the pharmacological potential of the pyrazolo[3,4-d]thiazoles and of thepyrazolo[3,4-c]pyrazoles, two examples of such rare families, only few methods of preparation and directfunctionalization of these heterocyclic moieties have been described.In this context, the main goal of our research aims at exploring new routes towards these bicyclic systemsfrom readily available and affordable starting materials. Efficient strategies were developed relying onhydrazine condensations, on intramolecular N-cyclizations, on chemo-selective halogenation and variouscross-coupling reactions. Moreover, the pyrazolo[3,4-d]thiazole entity was fused to a triazapentalenestructure in order to assess the spectroscopic properties
Kerr, G. "The synthesis of pyrazole C-nucleosides as potential antitumour agents". Thesis, Heriot-Watt University, 1992. http://hdl.handle.net/10399/1454.
Smith, Duncan. "The synthesis of pyrazole C-nucleosides containing D-arabinose and D-xylose". Thesis, Heriot-Watt University, 1985. http://hdl.handle.net/10399/1617.
Böhnisch, Torben. "C2-Symmetric Pyrazole-Bridged Ligands and Their Application in Asymmetric Transition-Metal Catalysis". Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2015. http://hdl.handle.net/11858/00-1735-0000-0028-876A-6.
Ejjoummany, Abdelaziz. "Design et fonctionnalisation d’hétérocycles originaux de type bicycliques [5-5] et tricycliques [6-5-6] à visée thérapeutique potentielle". Thesis, Orléans, 2020. http://www.theses.fr/2020ORLE3141.
The access to new original biologically active heterocyclic compounds, is one of the main objectives of our research group. In this context, the main purpose of this thesis is the design of three new families of heterocyclic compounds containing a pyrazolic motif that may exhibit biological activities, namely pyrido[1',2': 1.5]pyrazolo[4,3-d]pyrimidine, pyrrolo[3,4-c]pyrazole and pyrazolo[5,1-b]thiazole.This manuscript is essentially dedicated to a methodology work describing the different routes of access to these originals and potentially modular tricyclic and bicyclic precursors. The reactivity of these key synthons is then studied towards aromatic nucleophilic substitutions reactions and various pallado-catalyzed methods of functionalization (Activation with PyBrOP- (hetero) arylation, Liebeskind-Srogl, Suzuki-Miyaura, Buchwald-Hartwig, C-H arylation, aromatic nucleophilic substitution) to develop interesting libraries built around these unusual structures, thus opening numerous pharmacological perspectives
Ervithayasuporn, Vuthichai. "Synthesis and photochemistry of pyrano[2,3-c]pyrazoles". Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-042006-160619/.
ERVITHAYASUPORN, VUTHICHAI. "Synthesis and Photochemistry of Pyrano[2,3-c]pyrazoles". Digital WPI, 2006. https://digitalcommons.wpi.edu/etd-theses/228.
Adcock, Romain. "Synthesis and reactivity of [RhI(CO)2(L)] and [RL][RhI2(CO)2] rhodium complexes where L is a nitrogen-containing ligand for the methanol carbonylation reaction". Thesis, Toulouse, INPT, 2011. http://www.theses.fr/2011INPT0123.
This study focuses on the synthesis and reactivity of rhodium complexes bearing N- containing ligands or counter-cations for the [Rh]-catalyzed methanol carbonylation reaction to produce acetic acid under the industrial Celanese Acid Optimization (AO) process conditions. In a first part, full synthesis and characterization of neutral Rh(I) square planar cis- [RhX(CO)2(L)] (X = Cl or I) complexes have been described, for which L is an N-ligand belonging to the amine, imidazole or pyrazole family. For the [RhI(CO)2(L)] complexes, variable-temperature 13C{1H} NMR spectroscopy has put in evidence a fluxional behavior for the different sized L ligands involved. The rate of this fluxional process reveals to be related to both electronic and steric contributions brought by L to the Rh center. These parameters (mainly steric), supported by single-crystal X-ray analyses in the solid state, also influence significantly the kinetics of the methyl iodide oxidative addition reaction followed by rapid CO migratory insertion, the overall being the rate determining step of the [Rh]-catalyzed methanol carbonylation cycle. In absence of CO, this reaction gives rise to the corresponding neutral Rh(III) acetyl complex, which immediately dimerizes to afford [Rh(μ- I)I(COMe)(CO)(L)]2 complex, for which several X-ray crystal structures have been obtained and studied. In addition, the surprising C-H activation in the case of a tBu-pyrazole ligand giving rise to a cyclometalated Rh dimer is reported. In a second part, the reactivity of the latter neutral Rh(I) [RhI(CO)2(L)] complexes as potential precursors has been investigated by batch experiments for the methanol carbonylation reaction. Mechanistic understanding via VT-HP-NMR experiments enabled to detect mainly anionic Rh(I) [RL][RhI2(CO)2] (R = H or CH3 according to the working conditions) complexes formed by decoordination followed by quaternization of the L ligand. Despite this result, the pyrazole family ligands showed better stability under the harsh process conditions. Thus, it cannot be ruled out that equilibrium between neutral and anionic species co-exist in the reaction medium at high temperatures and that [RL]I salt dissociation occurs, restoring the L ligand into the Rh coordination sphere. At this stage we focused on the anionic Rh(I) complex and prepared a series of [XNR3][RhI2(CO)2] (X = H or CH3) species, which have been fully characterized. Infrared, NMR, conductivity experiments and DFT model calculations together put in evidence ion interactions according to the nature of the ammonium counter-cation. Protonated cations significantly impact on the kinetics of the methyl iodide oxidative addition presumably due to H-interactions with the Rh square plane. The final part deals with the mechanism of the reductive elimination reaction, the last step of the [Rh]-catalyzed methanol carbonylation cycle, which from complex [RhI3(COCH3)(CO)2]-, regenerates [RhI2(CO)2]-. In contrast to the classically admitted mechanism of reductive elimination of CH3COI followed by subsequent hydrolysis to form AcOH and HI, we demonstrate from experimental DFT calculation that substitution of an iodo ligand by an acetate ion occurs to give rise to the [RhI2(OAc)(COCH3)(CO)2]- species. Thus, reductive elimination regenerates [RhI2(CO)2]- and produces acetic anhydride, which after hydrolysis affords two molecules of acetic acid. Such a mechanism operates under process conditions at low water content with a significant amount of acetate ions
Chioua, Rachid. "Synthèse, structure et réactivité de dérivés de la 1H-pyrazolo[3,4-c]pyridine. Analogues acycliques de nucléosides". Montpellier 1, 1992. http://www.theses.fr/1992MON13526.
Kothe, Thomas. "Reductive Binding of C‒O and Nitro Substrates at a Pyrazolate-Bridged Preorganized Dinickel Scaffold". Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-1524-B.
Części książek na temat "C]pyrazole":
Angulwar, Jaman A. "Multicomponent Synthesis of 2-Substituted Derivatives of 6-Amino-5-Cyano-1,4-Dihydro-3-Methyl-1,4-Diphenylpyrano-[2,3-C]-Pyrazole Using Knoevenagel and Michael Addition". W Modern Green Chemistry and Heterocyclic Compounds, 113–36. Series statement: Innovations in physical chemistry: monographic series: Apple Academic Press, 2020. http://dx.doi.org/10.1201/9780367276942-4.
Chandra, H., H. Fischer, F. A. Neugebauer i M. C. R. Symons. "Radical Ions of Benzo[c]cinnolines and 2,3-Dihydro-1H-benzo[c]pyrazolo[1,2-a]cinnolines". W Organic Free Radicals, 143. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73963-7_71.
Pardasani, R. T., i P. Pardasani. "Magnetic properties of copper(II) complex of 5, 2-diphenyl-6H-pyrazolo-[1, 5-c] pyrimidine-7-thiones". W Magnetic Properties of Paramagnetic Compounds, 397–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49202-4_186.
Pardasani, R. T., i P. Pardasani. "Magnetic properties of copper(II) complex of 5-(p-tolyl)-2-phenyl-6H-pyrazolo- [1, 5-c]pyrimidine-7-thione". W Magnetic Properties of Paramagnetic Compounds, 393–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49202-4_184.
Pardasani, R. T., i P. Pardasani. "Magnetic properties of copper(II) complex of 5-(p-methoxyphenyl)-2-phenyl-6H-pyrazolo- [1, 5-c]pyrimidine-7-thiones". W Magnetic Properties of Paramagnetic Compounds, 395–96. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49202-4_185.
Pardasani, R. T., i P. Pardasani. "Magnetic properties of copper(II) complex of 5-p-chlorophenyl-2-phenyl-6H-pyrazolo- [1, 5-c]pyrimidine-7-thiones". W Magnetic Properties of Paramagnetic Compounds, 399–400. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49202-4_187.
Pardasani, R. T., i P. Pardasani. "Magnetic properties of copper(II) complex of 5-p-bromophenyl-2-phenyl-6H-pyrazolo- [1, 5-c]pyrimidine-7-thiones". W Magnetic Properties of Paramagnetic Compounds, 401–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49202-4_188.
Sapeta, K., i M. A. Kerr. "Fragment C–C–Pyrazole–C–C". W Science of Synthesis Knowledge Updates KU 2011/1, 1. Georg Thieme Verlag KG, 2011. http://dx.doi.org/10.1055/sos-sd-112-00063.
Stadlbauer, W. "Fragment C—C—Pyrazole—C—C". W Five-Membered Hetarenes with Two Nitrogen or Phosphorus Atoms, 1. Georg Thieme Verlag KG, 2002. http://dx.doi.org/10.1055/sos-sd-012-00331.
Sapeta, K., i M. A. Kerr. "Fragments Pyrazole–C–C and C–C". W Science of Synthesis Knowledge Updates KU 2011/1, 1. Georg Thieme Verlag KG, 2011. http://dx.doi.org/10.1055/sos-sd-112-00055.
Streszczenia konferencji na temat "C]pyrazole":
Medvedev, Michail, Michail Elinson i Alexey Ilovaisky. "Green approach to the design of functionalized medicinally privileged 4-aryl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile scaffold !" W The 15th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2011. http://dx.doi.org/10.3390/ecsoc-15-00580.
Nikalje, Anna Pratima, Julio Seijas Vázquez, M. Pilar Vazquez-Tato i Urja Nimbalkar. "Ionic liquid [Et3NH][HSO4]catalyslyzed multicomponent synthesis of 6 amino-4-(Substituted phenyl)-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile ". W The 20th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2016. http://dx.doi.org/10.3390/ecsoc-20-f011.
Ledeneva, Irina, Vitaly Didenko, Victor Dotsenko i Khidmet Shikhaliev. "Synthesis and reactions of pyrazolo[5,1-c][1,2,4]triazine-3-carbothioamides". W The 17th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2013. http://dx.doi.org/10.3390/ecsoc-17-a040.
Stadlbaur, Wolfgang, Gerhard Hojas i Werner Fiala. "Thermal Cyclization of 2-Hydrazonoacyl-3-oxo-heterocycles to Pyrazolo[4,3-c]fused Heterocycles". W The 2nd International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 1998. http://dx.doi.org/10.3390/ecsoc-2-01669.
Shukla, Bindesh Kumar, i Umesh Yadava. "QSAR study of some pyrazolo[3,4-d]pyrimidine derivatives as the c-Src inhibitors". W INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015): Proceeding of International Conference on Condensed Matter and Applied Physics. Author(s), 2016. http://dx.doi.org/10.1063/1.4946371.
Gharib, Ali, Mina Roshani i Manouchehr Jahangir. "Efficient Catalytic Synthesis of Pyrazolo[3,4-d]pyrimidine, Pyrazolo[4,3- e][1,2,4]triazolo[1,5-c]pyrimidine, Pyrazolo[4,3-e][1,2,4]triazolo[1,5- c]pyrimidine, Pyrazolo[3,4-d]pyrimidin-4-one derivatives using Heterogeneous Preyssler Heteropolyacid, H14[NaP5W30O110]/SiO2". W The 13th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2009. http://dx.doi.org/10.3390/ecsoc-13-00169.
Khatri, Taslimahemad Talab, Aadil Khursheed i Pushpendra Kumar. "Water mediated synthesis of pyrano[2, 3-c]pyrazoles using L-histidine as an effective catalyst". W RECENT ADVANCES IN FUNDAMENTAL AND APPLIED SCIENCES: RAFAS2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4990359.
Bireddy, Srinivasa Reddy, Venkata Ramana Reddy Chittireddy i Laxminarayana Eppakayala. "PEG-600: Greensolvent for synthesis of pyrazolo[5,1-c]thieno[3,4-e][1,2,4]triazin-6-amine". W NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0060858.
Marra, Roberta K. F., Alice M. R. Bernardino, Marcos C. de Souza, Gilberto A. Romeiro, María J. Iglesias i Fernando López-Ortiz. "Synthesis of new hemilabile ligands based on phosphinic amide and pyrazolo[1,5-c]quanazoline moieties Applications in coordination chemistry". W 15th Brazilian Meeting on Organic Synthesis. São Paulo: Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-15bmos-bmos2013_201381913053.
Razmienė, Beatričė, Eva Řezníčková, Vaida Dambrauskienė, Eglė Arbačiauskienė, Martin Kubala, Asta Žukauskaitė, Vladimir Kryštof i Algirdas Šačkus. "New 2<em>H</em>-pyrazolo[4,3-<em>c</em>]pyridines: Synthesis, optical properties and elucidation of anti-cancer activity". W 6th International Electronic Conference on Medicinal Chemistry. Basel, Switzerland: MDPI, 2020. http://dx.doi.org/10.3390/ecmc2020-07448.