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Статті в журналах з теми "Fluorinated alkenes"

1

Pfund, Emmanuel, Thierry Lequeux, and David Gueyrard. "Synthesis of Fluorinated and Trifluoromethyl-Substituted Alkenes through the Modified Julia Olefination: An Update." Synthesis 47, no. 11 (2015): 1534–46. http://dx.doi.org/10.1055/s-0034-1380548.

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The modified Julia olefination is now a powerful tool for the synthesis of a large range of functionalized alkenes. This short review covers the last five years and provides an overview of the synthesis of mono-, difluoro-, and trifluoromethyl-substituted alkenes via the modified Julia olefination focusing on the novel scope of this reaction.1 Introduction2 Monofluoroalkenes2.1 Disubstituted α- and β-Monofluoroalkenes2.2 Bis(trifluoromethyl)phenyl Sulfones2.3 Conjugated Monofluoroalkenes2.4 Intramolecular Julia Olefination2.5 Smiles Rearrangement from Fluorinated Keto Sulfones2.6 Fluoroallylam
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Llopis, Natalia, and Alejandro Baeza. "HFIP-Promoted Synthesis of Substituted Tetrahydrofurans by Reaction of Epoxides with Electron-Rich Alkenes." Molecules 25, no. 15 (2020): 3464. http://dx.doi.org/10.3390/molecules25153464.

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In the present work, the employment of fluorinated alcohols, specifically 1,1,1,3,3,3-hexafluoroisopropanol (HFIP), as solvent and promoter of the catalyst-free synthesis of substituted tetrahydrofuranes through the addition of electron-rich alkenes to epoxydes is described. The unique properties of this fluorinated alcohol, which is very different from their non-fluorinated analogs, allows carrying out this new straightforward protocol under smooth reaction conditions affording the corresponding adducts in moderate yields in the majority of cases. Remarkably, this methodology has allowed the
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Chambers, R. D. "Fluorinated alkenes - a rich chemistry." Journal of Fluorine Chemistry 58, no. 2-3 (1992): 128. http://dx.doi.org/10.1016/s0022-1139(00)80575-8.

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4

Kostromitin, Vladislav S., Artem A. Zemtsov, Vladimir A. Kokorekin, Vitalij V. Levin, and Alexander D. Dilman. "Atom-transfer radical addition of fluoroalkyl bromides to alkenes via a photoredox/copper catalytic system." Chemical Communications 57, no. 42 (2021): 5219–22. http://dx.doi.org/10.1039/d1cc01609a.

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Hall, Lewis M., Lucy M. Milner, Sam J. Hart, Adrian C. Whitwood, Jason M. Lynam, and John M. Slattery. "Solvent- and anion-dependent rearrangement of fluorinated carbene ligands provides access to fluorinated alkenes." Dalton Transactions 48, no. 47 (2019): 17655–59. http://dx.doi.org/10.1039/c9dt04307a.

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The construction of fluorocarbene ligands using sequential nucleophilic and electrophilic addition to a ruthenium vinylidene complex is described. These undergo solvent- and anion-dependent rearrangement to liberate free fluorinated alkenes.
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6

Rivela, Cynthia B., Rodrigo G. Gibilisco, Carmen M. Tovar, et al. "FTIR product study of the Cl-initiated oxidation products of CFC replacements: (E/Z)-1,2,3,3,3-pentafluoropropene and hexafluoroisobutylene." RSC Advances 11, no. 21 (2021): 12739–47. http://dx.doi.org/10.1039/d1ra00283j.

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Yamada, Shigeyuki. "Effective Synthesis of Fluorinated Alkenes by Employing Fluorinated Vinylmetal Species." Journal of Synthetic Organic Chemistry, Japan 71, no. 9 (2013): 900–911. http://dx.doi.org/10.5059/yukigoseikyokaishi.71.900.

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Chen, He, Lin Zhu, and Chaozhong Li. "Silver-catalyzed radical carbofluorination of unactivated alkenes with acetic acid in aqueous solution." Organic Chemistry Frontiers 4, no. 4 (2017): 565–68. http://dx.doi.org/10.1039/c6qo00854b.

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Yang, Jieru, Ao Mao, Zhenting Yue, et al. "A simple base-mediated synthesis of diverse functionalized ring-fluorinated 4H-pyrans via double direct C–F substitutions." Chemical Communications 51, no. 39 (2015): 8326–29. http://dx.doi.org/10.1039/c5cc02073e.

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Le Guen, Clothilde, Teresa Mena-Barragán, Carmen Ortiz Mellet, David Gueyrard, Emmanuel Pfund та Thierry Lequeux. "Fluorinated hydroxypiperidines as selective β-glucosidase inhibitors". Organic & Biomolecular Chemistry 13, № 21 (2015): 5983–96. http://dx.doi.org/10.1039/c5ob00721f.

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Дисертації з теми "Fluorinated alkenes"

1

Bayliff, Andrew E. "Chemistry of novel fluorinated alkenes." Thesis, Durham University, 1986. http://etheses.dur.ac.uk/6798/.

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The work described in this thesis is concerned with three areas relating to nueleophilic reactions of novel-polyfluorinated alkenes-. a) Very highly strained fluorinated epoxides have been synthesised from bicyclic internal alkenes using Ca(OCl)(_2). These molecules display an almost unprecedented therira.1 and chemical stability. b) Aromatic bifunctional nucleophiles have been reacted with a variety of perfluorinated alkenes and cycloalkenes to give high yielding heterocyclic compounds. These are discussed within a mechanistic framework which my rationalise the product structures. c) Addition
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2

Hewitt, Christopher D. "Fluorinated aza-alkenes and related chemistry." Thesis, Durham University, 1987. http://etheses.dur.ac.uk/6766/.

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Spink, Robert C. H. "Functionalisation of hydrocarbons using fluorinated alkenes." Thesis, Durham University, 1996. http://etheses.dur.ac.uk/5336/.

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Functionalisation of hydrocarbons is a field of continuing activity and a variety of approaches to this field, have been taken. This thesis is concerned with the functionalisation of the carbon-hydrogen bond, in hydrocarbons, using fluorinated alkenes via a free radical chain mechanism. Addition of the nucleophilic alkyl radical to the electrophilic fluorinated alkene, specifically hexafluoropropene, occurs readily to give incorporation of the polyfluoroalkyl group into a number of hydrocarbons, including aliphatic, mono-, bi- and polycyclic systems. Further chemistry of these polyfluoroalkyla
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4

Kühnel, Moritz F. [Verfasser]. "Metal hydride induced hydrodefluorination of fluorinated alkenes and allenes / Moritz F. Kühnel." Berlin : Freie Universität Berlin, 2011. http://d-nb.info/1026359724/34.

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5

Cooper, Julian A. "Fluorinated building blocks." Thesis, Durham University, 2000. http://etheses.dur.ac.uk/4218/.

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Julian A Cooper This work describes the functionalisation of carbon-hydrogen bonds in saturated hydrocarbons via free radical addition to fluorinated alkenes. For example, hexafluoropropene can be added to produce a mono-adduct:- A range of fluoroalkenes have been used. These adducts can be functionalised by elimination of hydrogen fluoride to give new fluoroalkenes whose chemistry has been investigated. This has resulted in new fluorinated building blocks.
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Barreto, Shauna. "Utilisatiοn de la catalyse phοtοredοx au cuivre et de la mécanοchimie pοur la synthèse de cοmpοsés fluοrés. Etude de l'activité biοlοgique de nοuveaux cοmpοsés fluοrés et de peptides". Electronic Thesis or Diss., Normandie, 2025. http://www.theses.fr/2025NORMR009.

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L’atome de fluor joue un rôle crucial dans la modulation des propriétés physico-chimiques des molécules organiques. Son incorporation au sein de la structure des médicaments a connu une expansion rapide et importante. En raison de sa forte électronégativité et de sa lipophilie, le motif trifluorométhyle est couramment employé par l’industrie pharmaceutique. De plus, parmi les composés fluorés, les alcènes substitués par du fluor sont également d’une grande importance en chimie médicinale. Dans ce contexte, nous nous sommes intéressés au développement de voies de synthèses pour incorporer des m
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7

Chou, Yi-Lin, and 鄒依凌. "Study on the Mesophases and Electro-optical Properties of New Chiral Liquid Crystals Possessing Achiral Alkenyl Chain and Semi-fluorinated group at Chiral Terminal Tail." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/33156431778260815131.

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碩士<br>大同大學<br>化學工程學系(所)<br>98<br>There are many factors affect the properties of ferroelectric (SmC*) and antiferroelectric (SmCA*) liquid crystal phase such as chiral terminal group, rigid core, linking group, terminal chain length and optical purity. For these reasons, the purpose of this research work is an attempt to correlate the various core structures and achiral terminal groups to the formation of mesomorphic phases, especially ferroelectric and antiferroelectric phases in chiral liquid crystal materials. Thus, the chiral precursor, (S)-1-methyl-2-(2,2,3,3,4,4,4-heptafluorobutoxy) etha
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Книги з теми "Fluorinated alkenes"

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Chambers, R. D., B. Boutevin, B. Améduri, V. V. Bardin, and Dolbier W. R. Jr. Organofluorine Chemistry: Fluorinated Alkenes and Reactive Intermediates. Springer, 2010.

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2

Organofluorine Chemistry: Fluorinated Alkenes and Reactive Intermediates (Topics in Current Chemistry). Springer, 1997.

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Частини книг з теми "Fluorinated alkenes"

1

Chambers, R. D., and J. F. S. Vaughan. "Nucleophilic reactions of fluorinated alkenes." In Organofluorine Chemistry. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/bfb0119264.

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2

Améduri, Bruno, and Bernard Boutevin. "Telomerisation Reactions of fluorinated alkenes." In Organofluorine Chemistry. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/bfb0119267.

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3

Challenger, S. "Synthesis from Fluorinated Alkenes." In Acetals: Hal/X and O/O, S, Se, Te. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-029-00058.

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4

Ameduri, Bruno, and Bernard Boutevin. "Telomerisation reactions of fluorinated alkenes." In Well-Architectured Fluoropolymers: Synthesis, Properties and Applications. Elsevier, 2004. http://dx.doi.org/10.1016/b978-008044388-1/50010-8.

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5

Kollenz, G., and S. Ebner. "Transformation of Fluorinated Alkenes and Alkynes." In Three Carbon-Heteroatom Bonds: Thio-, Seleno-, and Tellurocarboxylic Acids and Derivatives; Imidic Acids and Derivatives; Ortho Acid Derivatives. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-023-00328.

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Beignet, J. "Reaction of Fluorinated Alkenes and Trimethyl Orthoacetate." In Three Carbon-Heteroatom Bonds: Acid Halides; Carboxylic Acids and Acid Salts. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-020-01315.

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7

Bolduc, T. G., B. Thomson, and G. M. Sammis. "2.8 Selective Radical Fluorinations." In Free Radicals: Fundamentals and Applications in Organic Synthesis 2. Georg Thieme Verlag KG, 2021. http://dx.doi.org/10.1055/sos-sd-233-00149.

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AbstractFluorine atoms are found in numerous industrially relevant materials, including pharmaceuticals, agrochemicals, and plastics. In the pharmaceutical industry alone, more than 20% of all therapeutics and a majority of the top-grossing drugs contain fluorine. The ubiquity of fluorinated compounds in industry has necessitated the development of new methods for selective fluorination. Historically, selective fluorination has relied upon electrophilic or nucleophilic processes. Recent breakthroughs in the discovery of mild radical fluorine-transfer reagents have led to a renaissance in selec
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"6. Recent advances in the reversible deactivation radical (co)polymerization of fluorinated alkenes/acrylates/ methacrylates/styrenes." In Reversible Deactivation Radical Polymerization. De Gruyter, 2019. http://dx.doi.org/10.1515/9783110643695-006.

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Lambert, Tristan H. "Construction of Alkylated Stereocenters: The Deng Synthesis of (–)-Isoacanthodoral." In Organic Synthesis. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190200794.003.0042.

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Matthew S. Sigm an at the University of Utah developed (Science 2012, 338, 1455) a redox-relay strategy that allowed for the enantioselective Heck arylation of alcohol 1 with diazo salt 2 to produce γ-arylated aldehyde 4 with high ee. Stephen P. Fletcher at the University of Oxford reported (Nature Chem. 2012, 4, 649) a procedure that utilized alkenes as alkylmetal equivalents for asymmetric conjugate additions, such as in the conversion of cyclohexenone 5 to ketone 7. A catalytic method for the regioselective and highly enantioselective 1,6-addition of alkynes to α, β, γ, δ-unsaturated carbon
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