Thematische Bibliographien / Activations C-H

Inhaltsverzeichnis

  1. Zeitschriftenartikel
  2. Dissertationen
  3. Bücher
  4. Buchteile
  5. Konferenzberichte
  6. Berichte der Organisationen

Auswahl der wissenschaftlichen Literatur zum Thema „Activations C-H“

Autor: Grafiati
Veröffentlicht am 16. November 2024

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Zeitschriftenartikel zum Thema "Activations C-H"

1

Yang, Yajie, Jiaqi Huang, Hailu Tan, et al. "Synthesis of cyano-substituted carbazoles via successive C–C/C–H cleavage." Organic & Biomolecular Chemistry 17, no. 4 (2019): 958–65. http://dx.doi.org/10.1039/c8ob03031f.

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Choi, Isaac, Julia Struwe, and Lutz Ackermann. "C–H activation by immobilized heterogeneous photocatalysts." Photochemical & Photobiological Sciences 20, no. 12 (2021): 1563–72. http://dx.doi.org/10.1007/s43630-021-00132-9.

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AbstractDuring the last decades, the merger of photocatalysis with transition metal chemistry has been surfaced as a sustainable tool in modern molecular syntheses. This Account highlights major advances in synergistic photo-enabled C‒H activations. Inspired by our homogenous ruthenium- and copper-catalyzed C‒H activations in the absence of an exogenous photosensitizer, this Account describes the recent progress on heterogeneous photo-induced C‒H activation enabled by immobilized hybrid catalysts until September 2021, with a topical focus on recyclability as well as robustness of the heterogen
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Ackermann, Lutz, Korkit Korvorapun, Ramesh C. Samanta, and Torben Rogge. "Remote C–H Functionalizations by Ruthenium Catalysis." Synthesis 53, no. 17 (2021): 2911–46. http://dx.doi.org/10.1055/a-1485-5156.

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AbstractSynthetic transformations of otherwise inert C–H bonds have emerged as a powerful tool for molecular modifications during the last decades, with broad applications towards pharmaceuticals, material sciences, and crop protection. Consistently, a key challenge in C–H activation chemistry is the full control of site-selectivity. In addition to substrate control through steric hindrance or kinetic acidity of C–H bonds, one important approach for the site-selective C–H transformation of arenes is the use of chelation-assistance through directing groups, therefore leading to proximity-induce
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Li, Shuai-Shuai, Liu Qin, and Lin Dong. "Rhodium-catalyzed C–C coupling reactions via double C–H activation." Organic & Biomolecular Chemistry 14, no. 20 (2016): 4554–70. http://dx.doi.org/10.1039/c6ob00209a.

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Zhu, Haoran, Sen Zhao, Yu Zhou, Chunpu Li, and Hong Liu. "Ruthenium-Catalyzed C–H Activations for the Synthesis of Indole Derivatives." Catalysts 10, no. 11 (2020): 1253. http://dx.doi.org/10.3390/catal10111253.

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The synthesis of substituted indoles has received great attention in the field of organic synthesis methodology. C–H activation makes it possible to obtain a variety of designed indole derivatives in mild conditions. Ruthenium catalyst, as one of the most significant transition-metal catalysts, has been contributing in the synthesis of indole scaffolds through C–H activation and C–H activation on indoles. Herein, we attempt to present an overview about the construction strategies of indole scaffold and site-specific modifications for indole scaffold via ruthenium-catalyzed C–H activations in r
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Kerr, M. E., I. Ahmed, A. Gunay, et al. "Non-directed, carbonate-mediated C–H activation and aerobic C–H oxygenation with Cp*Ir catalysts." Dalton Transactions 45, no. 24 (2016): 9942–47. http://dx.doi.org/10.1039/c6dt00234j.

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Ackermann, Lutz. "(Keynote) Metallaelectro-Catalyzed Bond Activations." ECS Meeting Abstracts MA2023-02, no. 52 (2023): 2478. http://dx.doi.org/10.1149/ma2023-02522478mtgabs.

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Oxidative C–H activation has emerged as an increasingly powerful tool in molecular syntheses.[ 1] Despite major progress towards atom and step economy, these transformations largely rely on precious metal catalysts and stoichiometric amounts of toxic metal oxidants, compromising the overall sustainability of the C–H activation strategy. In contrast, employing electrooxidation in lieu of reactive chemical oxidants prevents undesired waste formation through oxidant economyand offers efficient use of renewable energies from sustainable sources for chemical bond formation.[2] Inexpensive Earth-abu
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Gunay, Ahmet, and Klaus H. Theopold. "C−H Bond Activations by Metal Oxo Compounds." Chemical Reviews 110, no. 2 (2010): 1060–81. http://dx.doi.org/10.1021/cr900269x.

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Volla, Chandra M. R., Rahul K. Shukla, and Akshay M. Nair. "Allenes: Versatile Building Blocks in Cobalt-Catalyzed C–H Activation." Synlett 32, no. 12 (2021): 1169–78. http://dx.doi.org/10.1055/a-1471-7307.

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AbstractThe unique reactivity of allenes has led to their emergence as valuable coupling partners in transition-metal-mediated C–H activation reactions. On the other hand, due to its high abundance and high Lewis acidity, cobalt is garnering widespread interest as a useful catalyst for C–H activation. Here, we summarize cobalt-catalyzed C–H activations involving allenes as coupling partners and then describe our studies on Co(III)-catalyzed C-8 dienylation of quinoline N-oxides with allenes bearing a leaving group at the α-position for realizing a dienylation protocol.
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Jun, Chul-Ho, and Chang-Hee Lee. "Chelation-Assisted C–H and C–C Bond Activation of Allylic Alcohols by a Rh(I) Catalyst under Microwave Irradiation." Synlett 29, no. 06 (2017): 736–41. http://dx.doi.org/10.1055/s-0036-1591697.

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Chelation-assisted Rh(I)-catalyzed ketone synthesis from allylic alcohols and alkenes through C–H and C–C bond activations under microwave irradiation was developed. Aldimine is formed via olefin isomerization of allyl alcohol under Rh(I) catalysis and condensation with 2-amino-3-picoline, followed by continuous C–H and C–C bond activations to produce a dialkyl ketone. The addition of piperidine accelerates the reaction rate by promoting aldimine formation under microwave conditions.
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Dissertationen zum Thema "Activations C-H"

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Henderson, William Howell. "Palladium-Mediated C-H Activations." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1318003095.

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Bechtoldt, Alexander. "Aerobic Ruthenium-Catalyzed C–H Activations." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E492-A.

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Korvorapun, Korkit. "Site-Selectivity in Ruthenium-Catalyzed C–H and C–C Activations." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-148C-7.

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Wang, Hui. "Cobalt(III)- and Manganese(I)-Catalyzed C-H and C-C Activations." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://hdl.handle.net/11858/00-1735-0000-002E-E5EF-5.

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Pal, S. "Non-metallic approaches for C-H and C-Si bond activations." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2013. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/1921.

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Korvorapun, Korkit [Verfasser]. "Site-Selectivity in Ruthenium-Catalyzed C–H and C–C Activations / Korkit Korvorapun." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://d-nb.info/1218299231/34.

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Tian, Cong. "Metallaelectro-Catalyzed C─H Activations by 3d Transition Metals." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-1482-1.

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Mo, Jiayu. "Iron-Catalyzed C–H/N–H Activations for Annulation of Allenes, Alkynes, and Bicyclopropylidenes." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-14F0-5.

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Kossen, Hanno. "Exploration of Brønsted base catalysis for formal C–H bond activations." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/23598.

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This PhD project investigates the use of (Lewis or Brønsted) bases in catalysis. While the first chapter explores the use of main group metal amides in C–H bond activation reactions, the second chapter focusses on metal-free organocatalysis using so-called carbones. In the first chapter, formal allylic C(sp3)–H bond activations of unfuctionalised alkenes for C–C bond formations with imines were investigated. Alkali metal amides were used as catalysts for these transformations, giving homoallylic amine products. The investigations showed the unique reactivity of the Na-amide catalyst compared t
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Tian, Cong [Verfasser]. "Metallaelectro-Catalyzed C─H Activations by 3d Transition Metals / Cong Tian." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2020. http://d-nb.info/1217842853/34.

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Bücher zum Thema "Activations C-H"

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Yu, Jin-Quan, Lutz Ackermann, and Zhangjie Shi. C-H activation. Springer, 2010.

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Yu, Jin-Quan, and Zhangjie Shi, eds. C-H Activation. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12356-6.

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R, Leone Stephen, and United States. National Aeronautics and Space Administration., eds. Rate coefficients of C₂H with C₂H₄, C₂H₆, and H₂ from 150 to 359 K. National Aeronautics and Space Administration, 1996.

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Goldberg, Karen I., and Alan S. Goldman, eds. Activation and Functionalization of C—H Bonds. American Chemical Society, 2004. http://dx.doi.org/10.1021/bk-2004-0885.

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Dixneuf, Pierre H., and Henri Doucet, eds. C-H Bond Activation and Catalytic Functionalization II. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29319-6.

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Dixneuf, Pierre H., and Henri Doucet, eds. C-H Bond Activation and Catalytic Functionalization I. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-24630-7.

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Wu, Xiao-Feng, ed. Transition Metal-Catalyzed Heterocycle Synthesis via CH Activation. Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527691920.

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Pérez, Pedro J., ed. Alkane C-H Activation by Single-Site Metal Catalysis. Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-90-481-3698-8.

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Maiti, Debabrata, and Upendra Sharma, eds. Functionalisation of Heterocycles through Transition Metal Catalyzed C-H Activation. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-70843-5.

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Matsumoto, Arimasa. Iron-Catalyzed Synthesis of Fused Aromatic Compounds via C–H Bond Activation. Springer Japan, 2014. http://dx.doi.org/10.1007/978-4-431-54928-4.

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Buchteile zum Thema "Activations C-H"

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Beller, Matthias, and Xiao-Feng Wu. "Carbonylative C–H Activations." In Transition Metal Catalyzed Carbonylation Reactions. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39016-6_6.

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Kakiuchi, Fumitoshi, and Naoto Chatani. "Ruthenium-Catalyzed Reactions via sp CH, sp2 CH, sp3 CH, and CHalogen Bond Activations." In Ruthenium in Organic Synthesis. Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527603832.ch9.

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Knochel, Paul, Konstantin Karaghiosoff, and Sophia Manolikakes. "Selective C–H Activations Using Frustrated Lewis Pairs. Applications in Organic Synthesis." In Topics in Current Chemistry. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/128_2012_394.

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Legzdins, Peter, and Craig B. Pamplin. "Sequential Hydrocarbon C—H Bond Activations by 16-Electron Organometallic Complexes of Molybdenum and Tungsten." In ACS Symposium Series. American Chemical Society, 2004. http://dx.doi.org/10.1021/bk-2004-0885.ch011.

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Shi, Feng, and Richard C. Larock. "Remote C–H Activation via Through-Space Palladium and Rhodium Migrations." In C-H Activation. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/128_2008_46.

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Daugulis, Olafs. "Palladium and Copper Catalysis in Regioselective, Intermolecular Coupling of C–H and C–Hal Bonds." In C-H Activation. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/128_2009_10.

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Davies, Huw M. L., and Allison R. Dick. "Functionalization of Carbon–Hydrogen Bonds Through Transition Metal Carbenoid Insertion." In C-H Activation. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/128_2009_11.

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Bouffard, Jean, and Kenichiro Itami. "Rhodium-Catalyzed C–H Bond Arylation of Arenes." In C-H Activation. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/128_2009_12.

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Martins, Andrew, Brian Mariampillai, and Mark Lautens. "Synthesis in the Key of Catellani: Norbornene-Mediated ortho C–H Functionalization." In C-H Activation. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/128_2009_13.

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Fagnou, Keith. "Mechanistic Considerations in the Development and Use of Azine, Diazine and Azole N-Oxides in Palladium-Catalyzed Direct Arylation." In C-H Activation. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/128_2009_14.

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Konferenzberichte zum Thema "Activations C-H"

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Yann, Theara, Charinee Winotapun, Phanny Yos, Lee Hwei Voon, and Orathai Boondamnoen. "Particle Characteristics of Diatomite Activated by Alkaline Solution." In 2024 8th International Conference on Materials Engineering and Nano Sciences & 2024 8th International Conference on Material Engineering and Manufacturing. Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-d4jwe2.

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In this study, the activation of natural diatomite was done with alkaline solution. The diatomite powder was sieved and purified prior to activation at room temperature (Alk-DA RT) and 85 °C (Alk-DA 85 °C). The effect of activation time of Alk-DA 85 °C samples was observed for 1 h, 2 h and 5 h. At temperature interval from room temperature to 530 °C, the weight loss for all of Alk-DA are less than R-DA. The reduction of particle aggregation was found in Alk-DA at both RT and 85 °C as shown in SEM images, indicating the activation by NaOH that effectively breaks down the bulky structure. The fo
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Ulin-Avila, Erick, and Akhilesh Kumar Mishra. "Graphene-based Photonic C-H bond activation." In Frontiers in Optics. OSA, 2021. http://dx.doi.org/10.1364/fio.2021.jtu1a.55.

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Siffert, W., P. Scheid, and JW N. Akkerman. "PROTEIN KINASE C CONTROLS CA2+ MOBILIZATION IN HUMAN PLATELETS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644509.

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Platelet stimulation has been shown to result in a rise of cytosolic pH (pHi) as a result of an activation of a Na+/H+ antiport. We have investigated the role of pH in Ca2+ mobilization in human platelets. pHi and free Ca2+, {Ca2+)i, were measured in platelets loaded with the fluorescent indicators BCECF and quin2, respectively. Stimulation of platelets by either thrombin or OAG, an activator of protein kinase C (Pk-C), increased pHi. Pretreatment of platelets with inhibitors of Pk-C, trifluoperazine (TFP) or sphingosine (SPH), blocked the stimulus-induced rise in pHi, suggesting a role of Pk-
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Nyambo, Silver, Dong-Sheng Yang, and Yuchen Zhang. "PROBING SELECTIVE BOND ACTIVATION IN ALKYLAMINES: LANTHANUM-MEDIATED C-H AND N-H BOND ACTIVATION STUDIED BY MATI SPECTROSCOPY." In 73rd International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2018. http://dx.doi.org/10.15278/isms.2018.fb01.

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Lian, T., S. E. Bromberg, H. Yang, M. Asplund, R. G. Bergman, and C. B. Harris. "Femtosecond IR Studies of Alkane C-H Bond Activation by Organometallic Compounds." In International Conference on Ultrafast Phenomena. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/up.1996.fe.27a.

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The mechanism of alkane C-H bond activation by transition metal complexes such as CpM(CO)2 (M=Rh, Ir) has been intensely studied because it represents a first step in a catalytic process using unreactive hydrocarbons.[1] The bond activation reaction starts with the formation of monocarbonyl intermediates such as CpRh(CO). These species have been detected in the gas phase[2] and in liquefied rare Kr and Xe[3] by µs time resolved IR spectroscopy. Unfortunately, the subsequent oxidative insertion of CpRh(CO) into the C-H bond is not well understood due to its rapid rate and low quantum yield (~1%
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Kim, Jongsik, Marshall S. Abbott, David B. Go, and Jason C. Hicks. "Tunable C-H activation via metal-plasma interaction at elevated temperatures." In 2016 IEEE International Conference on Plasma Science (ICOPS). IEEE, 2016. http://dx.doi.org/10.1109/plasma.2016.7533960.

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Ortiz de Elguea, Verónica, Nuria Sotomayor, and Esther Lete. "Intramolecular Palladium-catalyzed C-H activation reactions: Synthesis of substituted quinolones." In MOL2NET 2016, International Conference on Multidisciplinary Sciences, 2nd edition. MDPI, 2016. http://dx.doi.org/10.3390/mol2net-02-h008.

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Kim, Jong, and Dong-Sheng Yang. "YTTRIUM-ASSISTED C-H AND C-C BOND ACTIVATION OF ETHYLENE PROBED BY MASS-ANALYZED THRESHOLD IONIZATION SPECTROSCOPY." In 71st International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2016. http://dx.doi.org/10.15278/isms.2016.ri06.

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Akkerman, JW N. "INTRACELLULAR PH CHANGES AND PLATELET ACTIVATION." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644774.

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It is long known that platelet aggregation and secretion are accompanied by acidification of the extracellular medium. Much of the proton extrusion results from hydrolysis of ATP generated in the glycolytic pathway and liberation of secretion granules, which are slightly acidic. Recent eyidence points at a third source for extracellular protons.Following early observations (1) that epinephrine-induced platelet functions depended on extracellular Na+ (Na+ o ), it became evident that platelets possess a Na+ /H+ antiport, which regulates the cytosolic pH (pH.) via stochiometric exchange of intrac
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Cao, Jianzhu, Tao Liu, Yuanyu Wu, Hong Li, and Yuanzhong Liu. "Analysis of Radioactive Source Term for Modular HTGR During Normal Operation." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-30075.

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The methods of radioactive source term analysis are introduced in detail for the modular high temperature gas cooled reactor in China. Radioactive fission products and activation products produced in the reactor are described. For fission products, the emphasis is on the process from production through release to the environment for noble gas, iodine and long-lived metallic nuclides. For activation products, it mainly introduces the behaviors of H-3 and C-14. Especially the permeation process from primary circuit to secondary circuit is described for H-3. Using the preliminary design parameter
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Berichte der Organisationen zum Thema "Activations C-H"

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Lees, Alistair J. Photochemistry of Intermolecular C-H Bond Activation Reactions. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/761218.

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Rakowski-DuBois, Mary C. Aspects of C-H Activation in Metal Complexes Containing Sulfur Ligands. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/833244.

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Asplund, M. C. Time resolved infrared studies of C-H bond activation by organometallics. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/290889.

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Crabtree, Robert. Moving to Sustainable Metals: Multifunctional Ligands in Catalytic, Outer Sphere C-H, N-H and O-H Activation. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1171638.

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Das, Jayabrata, and Debabrata Maiti. Transition Metal Catalyzed Remote C-H Activation: A New Direction Towards Site-Selective Chemical Reactions. The Israel Chemical Society, 2023. http://dx.doi.org/10.51167/acm00036.

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Lees, A. J. [Photochemistry of intermolecular C-H bond activation reactions]. Progress report, [September 15, 1994--March 15, 1995]. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/35271.

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Prusky, Dov, Noel T. Keen, and Stanley Freeman. Elicitation of Preformed Antifungal Compounds by Non-Pathogenic Fungus Mutants and their Use for the Prevention of Postharvest Decay in Avocado Fruits. United States Department of Agriculture, 1996. http://dx.doi.org/10.32747/1996.7570573.bard.

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C. gloeosporioides attacks unripe avocado fruits in the orchard. Germinated spores produce appressoria that germinate and breach the cuticle, but the resultant subcuticular hyphae become quiescent and do not develop further until fruit is harvested and ripens. Resistance of unripe avocado to attach by C. gloeosporioides is correlated with the presence of fungitoxic concentrations of the preformed antifungal compound, 1-acetoxy-2-hydroxy-4-oxoheneicosa-12, 15 diene in the pericarp of unripe fruits. The objective of this proposal was to study the signal transduction process by which elicitors in
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Rafaeli, Ada, and Russell Jurenka. Molecular Characterization of PBAN G-protein Coupled Receptors in Moth Pest Species: Design of Antagonists. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7593390.bard.

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The proposed research was directed at determining the activation/binding domains and gene regulation of the PBAN-R’s thereby providing information for the design and screening of potential PBAN-R-blockers and to indicate possible ways of preventing the process from proceeding to its completion. Our specific aims included: (1) The identification of the PBAN-R binding domain by a combination of: (a) in silico modeling studies for identifying specific amino-acid side chains that are likely to be involved in binding PBAN with the receptor and; (b) bioassays to verify the modeling studies using mut
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Rafaeli, Ada, Russell Jurenka, and Daniel Segal. Isolation, Purification and Sequence Determination of Pheromonotropic-Receptors. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7695850.bard.

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Moths constitute a major group of pest insects in agriculture. Pheromone blends are utilised by a variety of moth species to attract conspecific mates, which is under circadian control by the neurohormone, PBAN (pheromone-biosynthesis-activating neuropeptide). Our working hypothesis was that, since the emission of sex-pheromone is necessary to attract a mate, then failure to produce and emit pheromone is a potential strategy for manipulating adult moth behavior. The project aimed at identifying, characterising and determining the sequence of specific receptors responsible for the interaction w
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Moran, Nava, Richard Crain, and Wolf-Dieter Reiter. Regulation by Light of Plant Potassium Uptake through K Channels: Biochemical, Physiological and Biophysical Study. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7571356.bard.

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The swelling of plant motor cells is regulated by various signals with almost unknown mediators. One of the obligatory steps in the signaling cascade is the activation of K+-influx channels -K+ channels activated by hyperpolarization (KH channels). We thus explored the regulation of these channels in our model system, motor cell protoplasts from Samanea saman, using patch-clamp in the "whole cell" configuration. (a) The most novel finding was that the activity of KH channels in situ varied with the time of the day, in positive correlation with cell swelling: in Extensor cells KH channels were
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