Bibliografie tematiche / Addition de Giese

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Letteratura scientifica selezionata sul tema "Addition de Giese"

Autore: Grafiati
Pubblicato: 5 aprile 2025

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Articoli di riviste sul tema "Addition de Giese"

1

Kitcatt, David M., Simon Nicolle e Ai-Lan Lee. "Direct decarboxylative Giese reactions". Chemical Society Reviews 51, n. 4 (2022): 1415–53. http://dx.doi.org/10.1039/d1cs01168e.

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2

Han, Shengnan, Shaodong Liu, Lei Liu, Lutz Ackermann e Jie Li. "Cobalt-Catalyzed Diastereoselective Difluoroalkylation/Giese Addition Domino Reactions". Organic Letters 21, n. 14 (13 maggio 2019): 5387–91. http://dx.doi.org/10.1021/acs.orglett.9b01400.

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3

Dong, Jianyang, Xiaochen Wang, Zhen Wang, Hongjian Song, Yuxiu Liu e Qingmin Wang. "Visible-light-initiated manganese-catalyzed Giese addition of unactivated alkyl iodides to electron-poor olefins". Chemical Communications 55, n. 78 (2019): 11707–10. http://dx.doi.org/10.1039/c9cc06400a.

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4

Lee, Geun Seok, e Soon Hyeok Hong. "Formal Giese addition of C(sp3)–H nucleophiles enabled by visible light mediated Ni catalysis of triplet enone diradicals". Chemical Science 9, n. 26 (2018): 5810–15. http://dx.doi.org/10.1039/c8sc01827h.

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5

Fukuyama, Takahide, Takuji Kawamoto, Mikako Kobayashi e Ilhyong Ryu. "Flow Giese reaction using cyanoborohydride as a radical mediator". Beilstein Journal of Organic Chemistry 9 (3 settembre 2013): 1791–96. http://dx.doi.org/10.3762/bjoc.9.208.

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Abstract (sommario):
Tin-free Giese reactions, employing primary, secondary, and tertiary alkyl iodides as radical precursors, ethyl acrylate as a radical trap, and sodium cyanoborohydride as a radical mediator, were examined in a continuous flow system. With the use of an automated flow microreactor, flow reaction conditions for the Giese reaction were quickly optimized, and it was found that a reaction temperature of 70 °C in combination with a residence time of 10–15 minutes gave good yields of the desired addition products.
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6

Liu, Yongjun, Wenping Luo, Jiali Wu, Yewen Fang, Yan Li, Xiaoping Jin, Li Zhang, Zongyong Zhang, Fenfen Xu e Chan Du. "Radical addition-polar termination cascade: efficient strategy for photoredox-neutral-catalysed cyclopropanation and Giese-type reactions of alkenyl N-methyliminodiacetyl boronates". Organic Chemistry Frontiers 7, n. 13 (2020): 1588–92. http://dx.doi.org/10.1039/d0qo00349b.

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Abstract (sommario):
Silicate meets boronate: efficient cyclopropanation and Giese-type reactions of alkenyl N-methyliminodiacetyl boronates with alkyl silicates have been realized via a photoredox-neutral-catalysed radical-polar crossover process.
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7

ElMarrouni, Abdellatif, Casey B. Ritts e Jaume Balsells. "Silyl-mediated photoredox-catalyzed Giese reaction: addition of non-activated alkyl bromides". Chemical Science 9, n. 32 (2018): 6639–46. http://dx.doi.org/10.1039/c8sc02253d.

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Abstract (sommario):
The development of a conjugate addition reaction of non-activated alkyl bromides to Michael acceptors under visible-light photoredox catalysis is disclosed. A diverse set of alkyl bromides was successfully added to α,β-unsaturated esters and amides. This transformation allowed access to a key intermediate of Vorinostat®, an HDAC inhibitor used to fight cancer and HIV.
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8

Dykstra, Kevin, Alexei Buevich, Qi Gao, Yu-Hong Lam e Jeffrey T. Kuethe. "Photoredox-Catalyzed Giese Reactions: Decarboxylative Additions to Cyclic Vinylogous Amides and Esters". Molecules 27, n. 2 (10 gennaio 2022): 417. http://dx.doi.org/10.3390/molecules27020417.

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Abstract (sommario):
An effective strategy has been developed for the photoredox-catalyzed decarboxylative addition of cyclic amino acids to both vinylogous amides and esters leading to uniquely substituted heterocycles. The additions take place exclusively trans to the substituent present on the dihydropyridone ring affording stereochemical control about the new carbon-carbon bond. These reactions are operationally simplistic and afford the desired products in good to excellent isolated yields.
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9

Chen, Liang, Liangjian Hu, Yu Du, Weiping Su e Qiang Kang. "Asymmetric Photoinduced Giese Radical Addition Enabled by a Single Chiral-at-Metal Rhodium Complex". Chinese Journal of Organic Chemistry 40, n. 11 (2020): 3944. http://dx.doi.org/10.6023/cjoc202004041.

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10

Rostoll-Berenguer, Jaume, Gonzalo Blay, José R. Pedro e Carlos Vila. "Photocatalytic Giese Addition of 1,4-Dihydroquinoxalin-2-ones to Electron-Poor Alkenes Using Visible Light". Organic Letters 22, n. 20 (1 ottobre 2020): 8012–17. http://dx.doi.org/10.1021/acs.orglett.0c02953.

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Più fonti

Tesi sul tema "Addition de Giese"

1

Fortier, Lucas. "Réactivité de la fonction acide carboxylique en catalyse photoredox : applications à la valorisation d'acides gras biosourcés". Electronic Thesis or Diss., Université de Lille (2022-....), 2024. http://www.theses.fr/2024ULILR068.

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Abstract (sommario):
Cette thèse s'inscrit dans la recherche de procédés plus écologiques en chimie, répondant aux enjeux environnementaux actuels. Elle explore l'utilisation de molécules biosourcées et de synthèses écoresponsables, en mettant l'accent sur la photocatalyse, une approche en pleine expansion. Le travail se concentre sur le potentiel des acides carboxyliques en catalyse photoredox pour la synthèse de composés organiques d'intérêt, offrant des alternatives aux méthodes classiques souvent énergivores et peu respectueuses de l'environnement. La thèse s'articule autour de trois chapitres. Le premier présente une introduction théorique à la photocatalyse, abordant ses principes et les avancées récentes. Le deuxième chapitre développe deux nouvelles méthodes de couplage C-C décarboxylatif entre acides gras et accepteurs de radicaux, visant à produire des monomères pour des polymères biosourcés et des tensioactifs. Ce procédé exploite les acides gras biosourcés en remplacement de précurseurs pétroliers, suivant les principes de la chimie verte et visant une production durable de molécules fonctionnelles. Le troisième chapitre explore la synthèse de phtalides, composés aux propriétés biologiques et pharmacologiques importantes, via des conditions douces de photocatalyse. Cette approche évite des méthodes plus énergivores et s'appuie sur des catalyseurs organiques pour optimiser l'efficacité et la sélectivité des réactions. Ces travaux représentent une avancée dans la chimie organique et des matériaux, avec des applications pour la production de polymères biosourcés et de nouveaux produits chimiques. Ils ouvrent également des perspectives d'amélioration, notamment en explorant l'utilisation de la lumière infrarouge pour activer des réactions sous conditions encore plus douces
This thesis contributes to the development of more environmentally friendly chemical processes, addressing current environmental challenges. It explores the use of bio-based molecules and eco-responsible syntheses, focusing on photocatalysis, rapidly expanding approaches. The research centers on the potential of carboxylic acids in photoredox catalysis for synthesizing valuable organic compounds, offering alternatives to conventional methods that are often energy-intensive and less environmentally friendly. The thesis is structured into three main chapters. The first provides a theoretical introduction to photocatalysis, covering its principles and recent advances. The second chapter develops two novel decarboxylative C-C coupling methods between fatty acids and radical acceptors, aimed at producing monomers for biobased polymers and surfactants. This process leverages bio-based fatty acids as an alternative to petroleum-derived precursors, adhering to green chemistry principles and aiming for sustainable production of functional molecules. The third chapter explores the synthesis of phthalides, compounds with significant biological and pharmacological properties, using mild photocatalytic conditions. This approach avoids more energy-intensive methods and relies on organic catalysts to optimize reaction efficiency and selectivity. This work represents an advancement in organic and materials chemistry, with applications for bio-based polymer production and the creation of new chemicals. It also opens avenues for further improvement, particularly by exploring the use of infrared light to activate reactions under even milder conditions
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Capitoli di libri sul tema "Addition de Giese"

1

Robbins, Keith. "Turbulent Transition". In The World Since 1945, 143–200. Oxford University PressNew York, NY, 2002. http://dx.doi.org/10.1093/oso/9780192803146.003.0006.

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Abstract (sommario):
Abstract The years 1973–5, as has just been noted, led many observers to conclude that the world economy was on the brink of fundamen-tal and perhaps frightening change. In addition to the shocks induced by the oil price rise, there was talk of a ‘third industrial revolution’ resulting from the application of electronic technolo-gies and the ‘automation’ of industrial processes through the use of robots. The structures and processes which had underpinned the immediate post-war decades were looking obsolescent in the computer age that was dawning. Apple II, launched in 1977, can be described as the first mass-produced personal computer, and in the years that followed improvements in capacity and function multiplied. Everything, and not merely the new French highspeed train (1981), seemed to be moving à grande vitesse. Scientific and technological breakthroughs could not be confined, in their applications, to one region of the world. People listened to music everywhere with their ‘Walkman’—launched by the Jap-anese company Sony in 1980. The telephone operator and the bank clerk—to name only two ‘safe’ occupations—suddenly had bleak employment prospects. Newspapers, on both sides of the Atlantic, trying to inform their readers about such matters, were themselves caught up in industrial disputes as technology transformed production.
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Atti di convegni sul tema "Addition de Giese"

1

Флорова, В. С. "Distant Technologies in the Process of Training Future Journalists in Philosophy and Logic". In Современное образование: векторы развития. Роль социально-гуманитарного знания в подготовке педагога: материалы V международной конференции (г. Москва, МПГУ, 27 апреля – 25 мая 2020 г.). Crossref, 2020. http://dx.doi.org/10.37492/etno.2020.92.96.014.

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Abstract (sommario):
в статье рассматриваются перспективы дистанционного образования, его плюсы и минусы, возможность удаленного обучения как основной и вспомогательной формы. Способы организации занятий рассматриваются в применении к обучению будущих журналистов философии и логике с помощью цифровой среды Moodle. the paper discusses perspectives of using distant learning technolo-gies, its positive and negative aspects and the possibility of virtual education as a basic and additional form of training. Also, the paper considers the organi-zation of classes for future journalists in process of training students in philos-ophy and logic with the aid of the virtual education platform LMS Moodle.
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Rapporti di organizzazioni sul tema "Addition de Giese"

1

Vakaliuk, Tetiana A., e Svitlana I. Pochtoviuk. Analysis of tools for the development of augmented reality technologies. [б. в.], luglio 2021. http://dx.doi.org/10.31812/123456789/4625.

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Abstract (sommario):
The article considers cross-platform products that should be used to develop augmented reality technolo- gies: Unreal Development, Kit, Unity, Godot, Engine, Cocos2D, MonoGame, Unreal Engine, Marmalade, and others. Also, the possibilities of known SDKs for the development of augmented reality applications (Wikitude, Vuforia, Kudan, Maxst, Xzimg, NyARToolkit, Metaio SDK) are given. It is established that for the development of augmented reality technologies can be used not only cross-platform engines but also sets of development tools. Such kits allow you to speed up and simplify the process of developing any program with elements of augmented reality. These advantages and disadvantages will help beginners to choose the most convenient tool for developing augmented reality technologies. In addition, the article attempts to identify criteria and indicators for the selection of such environments, as well as their expert evaluation.
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