Готові списки джерел за темами / Oxidative alkenylation

Добірка наукової літератури з теми "Oxidative alkenylation"

Автор: Grafiati
Опубліковано: 7 липня 2024
Оновлено: 7 липня 2024

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Зміст

  1. Статті в журналах
  2. Дисертації
  3. Частини книг

Статті в журналах з теми "Oxidative alkenylation":

1

Koubachi, Jamal, Nabil El Brahmi, Gérald Guillaumet, and Saïd El Kazzouli. "Oxidative Alkenylation of Fused Bicyclic Heterocycles." European Journal of Organic Chemistry 2019, no. 15 (April 1, 2019): 2568–86. http://dx.doi.org/10.1002/ejoc.201900199.

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2

Sunke, Rajnikanth, Vimal Kumar, Mohd Ashraf Ashfaq, Swapna Yellanki, Raghavender Medisetti, Pushkar Kulkarni, E. V. Venkat Shivaji Ramarao, Nasreen Z. Ehtesham, and Manojit Pal. "A Pd(ii)-catalyzed C–H activation approach to densely functionalized N-heteroaromatics related to neocryptolepine and their evaluation as potential inducers of apoptosis." RSC Advances 5, no. 56 (2015): 44722–27. http://dx.doi.org/10.1039/c5ra06764b.

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3

Cao, Hao, Dong Liu, Chao Liu, Xinquan Hu, and Aiwen Lei. "Copper-catalyzed oxidative alkenylation of thioethers via Csp3–H functionalization." Organic & Biomolecular Chemistry 13, no. 8 (2015): 2264–66. http://dx.doi.org/10.1039/c4ob02564d.

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4

Tang, Jingjie, Mei Cong, Yi Xia, Gilles Quéléver, Yuting Fan, Fanqi Qu, and Ling Peng. "Pd-catalyzed oxidative C–H alkenylation for synthesizing arylvinyltriazole nucleosides." Organic & Biomolecular Chemistry 13, no. 1 (2015): 110–14. http://dx.doi.org/10.1039/c4ob01836b.

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5

Mishra, Neeraj Kumar, Jihye Park, Satyasheel Sharma, Sangil Han, Mirim Kim, Youngmi Shin, Jinbong Jang, Jong Hwan Kwak, Young Hoon Jung, and In Su Kim. "Direct access to isoindolines through tandem Rh(iii)-catalyzed alkenylation and cyclization of N-benzyltriflamides." Chem. Commun. 50, no. 18 (2014): 2350–52. http://dx.doi.org/10.1039/c3cc49486a.

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6

Katsina, Tania, Elissavet E. Anagnostaki, Foteini Mitsa, Vasiliki Sarli, and Alexandros L. Zografos. "Palladium-catalyzed direct alkenylation of 4-hydroxy-2-pyridones." RSC Advances 6, no. 9 (2016): 6978–82. http://dx.doi.org/10.1039/c5ra26360c.

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7

Miyasaka, Mitsuru, Koji Hirano, Tetsuya Satoh, and Masahiro Miura. "Palladium-Catalyzed Direct Oxidative Alkenylation of Azoles." Journal of Organic Chemistry 75, no. 15 (August 6, 2010): 5421–24. http://dx.doi.org/10.1021/jo101214y.

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8

Zhu, Weihao, and T. Brent Gunnoe. "Advances in Rhodium-Catalyzed Oxidative Arene Alkenylation." Accounts of Chemical Research 53, no. 4 (April 2, 2020): 920–36. http://dx.doi.org/10.1021/acs.accounts.0c00036.

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9

Cao, Hua, Sai Lei, Jinqiang Liao, Jianping Huang, Huifang Qiu, Qinlin Chen, Shuxian Qiu, and Yaoyi Chen. "Palladium(ii)-catalyzed intermolecular oxidative C-3 alkenylations of imidazo[1,2-a]pyridines by substrate-contolled regioselective C–H functionalization." RSC Adv. 4, no. 91 (2014): 50137–40. http://dx.doi.org/10.1039/c4ra09669j.

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Анотація:
An efficient and highly regioselective palladium(ii)-catalyzed oxidative C-3 alkenylation of imidazo[1,2-a]pyridines with acrylate, acrylonitrile, or vinylarenes has been developed by using oxygen as an oxidant.
10

Tang, Shan, Yong Wu, Wenqing Liao, Ruopeng Bai, Chao Liu, and Aiwen Lei. "Revealing the metal-like behavior of iodine: an iodide-catalysed radical oxidative alkenylation." Chem. Commun. 50, no. 34 (2014): 4496–99. http://dx.doi.org/10.1039/c4cc00644e.

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Статті в журналах

Дисертації з теми "Oxidative alkenylation":

1

Nassiri, Sarah. "Fonctionnalisations régiosélectives de N-oxyde de pyrazolopyridines via des réactions de C-H activation pallado-catalysées." Electronic Thesis or Diss., Orléans, 2024. https://theses.univ-orleans.fr/prive/accesESR/2024ORLE1007_va.pdf.

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Les réactions de C-H activation représentent aujourd’hui une approche attrayante pour l’élaboration de nouveaux systèmes hétérocycliques pouvant avoir des applications dans divers domaines notamment en biologie et en pharmacie. L’objectif de cette thèse est le développement de nouvelles stratégies permettant de fonctionnaliser sélectivement des hétérocycles azotés par des réactions de C-H activation au moyen de la catalyse à base de métaux de transition.Dans la première partie, nous avons mis au point une méthodologie de synthèse, permettant la fonctionnalisation régiosélective en ortho de la fonction N-oxyde des dérivés de 7-azaindazole par une réaction d’arylation oxydative, en utilisant divers arènes et hétéroarènes comme partenaires de couplage. Cette stratégie permet de contrôler la position de la fonctionnalisation, en utilisant des conditions réactionnelles optimisées, ce qui est essentiel pour la conception de nouveaux composésavec des propriétés améliorées quelque soit les domaines d'application.Dans la deuxième partie, nous avons réalisé une série d'expériences visant à effectuer une alcénylationoxydative régiosélective sur le cycle pyridinique des 4-azaindazoles et 7-azaindazoles, en utilisant la fonction N-oxyde comme groupe ortho-directeur, permettant ainsi de contrôler la position de la fonctionnalisation.Dans la dernière partie, une réaction d'arylation directe sur divers analogues du noyau 7-azaindazolea été étudiée. L’utilisation de la fonction N-oxyde associé à l’optimisation des conditions réactionnelles a permis une régiosélectivité de la réaction vers la position C6
The activation of C-H bonds has emerged as an attractive approach for advancing the synthesis of novel heterocyclic systems with potential applications across diverse fields, particularly in biology and pharmacy.The primary aim of this PhD thesis was to develop innovative strategies for the selective functionalization of nitrogen-containing heterocycles through C-H activation reactions, employing transition metal catalysis.In the first part, we developed a synthesis methodology enabling the regioselective functionalization at the ortho position of the N-oxide function in 7-azaindazole derivatives. The reaction goes through anoxidative arylation reaction, with various arenes and heteroarenes as coupling partners. This approachenables precise control over the position of functionalization through optimized reaction conditions, which is crucial to design new compounds with enhanced properties whatever the domains of application.In the second part of our research, we conducted a series of experiments to perform a regioselectiveoxidative alkenylation on the pyridine moiety of 4-azaindazole and 7-azaindazole. Using the N-oxidefunction as an ortho directing group allowed us to exert control over the position of functionalization.In the last part, we presented our work aimed at establishing optimal conditions for a direct arylation reaction on various 7-azaindazole analogues. The use of the N-oxide function favoured the regioselectivity of the reaction towards the C6 position
2

Keddie, Daniel Joseph. "The synthesis of novel profluorescent nitroxide probes." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/16702/1/Daniel_Keddie_Thesis.pdf.

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A number of novel isoindoline nitroxides have been synthesised using a variety of synthetic techniques. Several carbon-carbon bond forming methodologies, including the first examples of Heck and Sonogashira coupling applied to the isoindoline nitroxide class, were utilised to give novel robust aromatic frameworks. Palladium-catalysed Heck coupling of brominated nitroxides and ester-substituted olefins generates novel nitroxides possessing extended conjugation. Hydrolysis of the nitroxide esters gave the corresponding carboxylic acids, which showed enhanced water solubility. Sonogashira coupling of an iodo-isoindoline nitroxide gave several novel alkynesubstituted nitroxides in high yield. Subsequent coupling of a deprotected ethynyl nitroxide with aromatic iodides gave acetylene-linked nitroxides and an acetylene linked nitroxide dimer. A butadiyne linked dinitroxide was successfully synthesised via Eglinton oxidative coupling of two ethynyl nitroxides. The synthesis of a novel water-soluble dicarboxy nitroxide was achieved by base hydrolysis of a dinitrile. Functional group interconversion furnished anhydride and imide substituted nitroxides from the diacid. Subjecting the imide to the Hofmann rearrangement gave an unexpected brominated amino-carboxy nitroxide. The dicarboxy nitroxide and the brominated amino-carboxy nitroxide were both shown to have a protective effect on Ataxia-Telangiectasia cells, indicating a possible role as antioxidants in the treatment of this disease. A fluorescein nitroxide was successfully synthesised through the condensation of the anhydride substituted nitroxide and resorcinol. After limited success using a variety of other techniques, Buchwald-Hartwig amination was able to furnish a rhodamine nitroxide, via a triflate-fluorescein nitroxide. The extended aromatic nitroxides possess suppressed fluorescence and we have described these systems as profluorescent. The profluorescent nitroxides were found to have significantly lower quantum yields than the non-radical analogues and displayed a substantial increase in fluorescence intensity upon radical trapping, making them useful probes for free radical reactions.
3

Keddie, Daniel Joseph. "The synthesis of novel profluorescent nitroxide probes." Queensland University of Technology, 2008. http://eprints.qut.edu.au/16702/.

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Анотація:
A number of novel isoindoline nitroxides have been synthesised using a variety of synthetic techniques. Several carbon-carbon bond forming methodologies, including the first examples of Heck and Sonogashira coupling applied to the isoindoline nitroxide class, were utilised to give novel robust aromatic frameworks. Palladium-catalysed Heck coupling of brominated nitroxides and ester-substituted olefins generates novel nitroxides possessing extended conjugation. Hydrolysis of the nitroxide esters gave the corresponding carboxylic acids, which showed enhanced water solubility. Sonogashira coupling of an iodo-isoindoline nitroxide gave several novel alkynesubstituted nitroxides in high yield. Subsequent coupling of a deprotected ethynyl nitroxide with aromatic iodides gave acetylene-linked nitroxides and an acetylene linked nitroxide dimer. A butadiyne linked dinitroxide was successfully synthesised via Eglinton oxidative coupling of two ethynyl nitroxides. The synthesis of a novel water-soluble dicarboxy nitroxide was achieved by base hydrolysis of a dinitrile. Functional group interconversion furnished anhydride and imide substituted nitroxides from the diacid. Subjecting the imide to the Hofmann rearrangement gave an unexpected brominated amino-carboxy nitroxide. The dicarboxy nitroxide and the brominated amino-carboxy nitroxide were both shown to have a protective effect on Ataxia-Telangiectasia cells, indicating a possible role as antioxidants in the treatment of this disease. A fluorescein nitroxide was successfully synthesised through the condensation of the anhydride substituted nitroxide and resorcinol. After limited success using a variety of other techniques, Buchwald-Hartwig amination was able to furnish a rhodamine nitroxide, via a triflate-fluorescein nitroxide. The extended aromatic nitroxides possess suppressed fluorescence and we have described these systems as profluorescent. The profluorescent nitroxides were found to have significantly lower quantum yields than the non-radical analogues and displayed a substantial increase in fluorescence intensity upon radical trapping, making them useful probes for free radical reactions.
4

Prakash, Sekar, and 帕卡許. "Rhodium-Catalyzed Alkenylation and Cobalt-Catalyzed Oxidative Cyclization Reactions via C–H Bond Activation." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/58qm33.

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Частини книг з теми "Oxidative alkenylation":

1

Doba, Takahiro. "Iron-Catalyzed Oxidative C–H Alkenylation of Thiophenes with Enamines." In Springer Theses, 109–49. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-4121-6_5.

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2

Lei, A., and S. Tang. "47.1.2.1.6 Alkyl-Mizoroki–Heck-Type Reactions." In Knowledge Updates 2023/1. Stuttgart: Georg Thieme Verlag KG, 2023. http://dx.doi.org/10.1055/sos-sd-147-00132.

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AbstractSubstituted alkenes are basic structural motifs in a large number of organic molecules and their synthesis has received continuous attention from synthetic chemists. One of the most straightforward methods for constructing substituted alkenes is the Mizoroki–Heck reaction. Generally, this transformation is catalyzed by palladium and mainly deals with the synthesis of substituted alkenes from aryl or vinyl electrophiles. In sharp contrast, the Mizoroki–Heck reaction of alkyl electrophiles has long been considered a challenging transformation due to the decreased rates of oxidative addition and subsequent facile β-hydride elimination. To address this limitation in traditional Mizoroki–Heck reactions, radical processes have been introduced to achieve the alkenylation of alkyl electrophiles. This review provides an overview of the recent developments in alkyl-Mizoroki–Heck-type reactions. Particular attention is paid to the intermolecular Mizoroki–Heck-type reaction between alkyl radicals and terminal alkenes. The limitations and advantages of using different catalytic methods are discussed and compared.

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