Auswahl der wissenschaftlichen Literatur zum Thema „Electron-poor alkenes“

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Zeitschriftenartikel zum Thema "Electron-poor alkenes"

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Bower, John F., Timothy P. Aldhous, Raymond W. M. Chung und Andrew G. Dalling. „Enantioselective Intermolecular Murai-Type Alkene Hydroarylation Reactions“. Synthesis 53, Nr. 17 (25.05.2021): 2961–75. http://dx.doi.org/10.1055/s-0040-1720406.

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AbstractStrategies that enable the efficient assembly of complex building blocks from feedstock chemicals are of paramount importance to synthetic chemistry. Building upon the pioneering work of Murai and co-workers in 1993, C–H-activation-based enantioselective hydroarylations of alkenes offer a particularly promising framework for the step- and atom-economical installation of benzylic stereocenters. This short review presents recent intermolecular enantioselective Murai-type alkene hydroarylation methodologies and the mechanisms by which they proceed.1 Introduction2 Enantioselective Hydroarylation Reactions of Strained Bicyclic Alkenes3 Enantioselective Hydroarylation Reactions of Electron-Rich Acyclic Alkenes4 Enantioselective Hydroarylation Reactions of Electron-Poor Acyclic Alkenes5 Enantioselective Hydroarylation Reactions of Minimally Polarized Acyclic Alkenes6 Conclusion and Outlook
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Hajdók, Imre, Falk Lissner, Martin Nieger, Sabine Strobel und Dietrich Gudat. „Diphosphination of Electron Poor Alkenes“. Organometallics 28, Nr. 6 (23.03.2009): 1644–51. http://dx.doi.org/10.1021/om801179k.

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Clennan, Edward L., Jakub P. Sram, Andrea Pace, Katie Vincer und Sophia White. „Intrazeolite Photooxidations of Electron-Poor Alkenes“. Journal of Organic Chemistry 67, Nr. 11 (Mai 2002): 3975–78. http://dx.doi.org/10.1021/jo025657c.

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Mieusset, Jean-Luc, Michael Abraham und Udo H. Brinker. „Carbene−Alkene Complexes between a Nucleophilic Carbene and Electron-Poor Alkenes†“. Journal of the American Chemical Society 130, Nr. 44 (05.11.2008): 14634–39. http://dx.doi.org/10.1021/ja8042118.

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Dixon, Craig E., Jeffrey A. Cooke und Kim M. Baines. „The Reaction of Group 14 Dimetallenes with Alkenes: Electron-Poor Alkenes“. Organometallics 16, Nr. 25 (Dezember 1997): 5437–40. http://dx.doi.org/10.1021/om970638s.

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Navarro, Miquel, Alberto Toledo, Sonia Mallet-Ladeira, E. Daiann Sosa Carrizo, Karinne Miqueu und Didier Bourissou. „Versatility and adaptative behaviour of the P^N chelating ligand MeDalphos within gold(i) π complexes“. Chemical Science 11, Nr. 10 (2020): 2750–58. http://dx.doi.org/10.1039/c9sc06398f.

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The hemilabile P^N ligand MeDalphos enables access to a wide range of stable gold(i) π-complexes with unbiased alkenes and alkynes, as well as electron-rich alkenes and for the first time electron-poor ones.
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Baird, Mark S., Michele E. Gerrard und Robert J. G. Searle. „Trapping of the tribromomethylanion by electron poor alkenes“. Tetrahedron Letters 26, Nr. 51 (1985): 6353–56. http://dx.doi.org/10.1016/s0040-4039(01)84597-4.

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Bonini, Carlo, Maurizio D'Auria, Rachele Ferri, Rachele Pucciariello und Anna Rita Sabia. „Graft copolymers of lignin with electron poor alkenes“. Journal of Applied Polymer Science 90, Nr. 4 (27.08.2003): 1163–71. http://dx.doi.org/10.1002/app.12801.

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Ballini, R., L. Barboni, G. Bosica, D. Fiorini und A. Palmieri. „Synthesis of fine chemicals by the conjugate addition of nitroalkanes to electrophilic alkenes“. Pure and Applied Chemistry 78, Nr. 10 (01.01.2006): 1857–66. http://dx.doi.org/10.1351/pac200678101857.

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Several aliphatic nitro compounds have been employed as stabilized carbanions in the conjugate addition to a variety of electron-poor alkenes (Michael reaction). Depending on the nature of the alkene, new carbon-carbon single or double bonds can be generated. However, all the Michael adducts can be efficiently utilized as key building blocks for the synthesis of a huge array of fine chemicals, including homo- and heterocyclic structures.
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Inés, Blanca, David Palomas, Sigrid Holle, Sebastian Steinberg, Juan A. Nicasio und Manuel Alcarazo. „Metal-Free Hydrogenation of Electron-Poor Allenes and Alkenes“. Angewandte Chemie International Edition 51, Nr. 49 (04.11.2012): 12367–69. http://dx.doi.org/10.1002/anie.201205348.

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Dissertationen zum Thema "Electron-poor alkenes"

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LEE, CHERYLYN. „PHOTO-INDUCED RADICAL COPOLYMERIZATIONS OF ELECTRON-RICH OLEFINS WITH ELECTRON-POOR OLEFINS“. Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184135.

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This study is a systematic investigation of the parameters and conditions necessary for photo-induced radical copolymerizations of donor olefins with acceptor olefins in the absence of an initiator. Very few cases have been previously reported and no mechanistic details of the initiation have been proposed in the literature. Our results show that the photoinitiation depends on the relative donor and acceptor strengths of the monomers, as well as the solvent. The highest occupied molecular orbital (HOMO) of the donor and the lowest unoccupied molecular orbital (LUMO) of the acceptor must be at the appropriate energy levels in order to produce a radical initiating species upon photoexcitation of the electron donor-acceptor (EDA) complex. If the donor-acceptor interaction is too weak, no copolymerization occurs. The excited complex (contact ion pair) presumably decays back to the ground state faster than producing an initiating species. If the donor-acceptor interaction is too strong, the excited complex dissociates to the free ions which could initiate ionic homopolymerization rather than radical copolymerization. The solvent may also determine the course of the reaction. In two cases, copolymerizations, which could be photo-induced in 1,2-dichloroethane, could not be photo-induced in acetonitrile. Dissociation of the excited complex (contact ion pair) is favored in polar solvents, such as acetonitrile, which are able to stabilize the ion radicals. This initiation method produces high molecular weight copolymers that may be cast into transparent films.
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Pozhydaiev, Valentyn. „New reactions of aminofunctionalization of alkenes“. Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAF028.

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Les amines aliphatiques sont au cœur de la chimie fine. Elles sont présentes dans plus de 40% des molécules pharmaceutiques mais sont également des précurseurs clés pour la construction de molécules bioactives complexes, de produits naturels et de polymères. Cette thèse décrit le développement d’une méthode générale pour l'accès rapide aux motifs β-aryléthylamines et 1,2-diamines à partir de styrènes, de sels de triflate d’hydroxylammonium et de divers nucléophiles. Contrairement aux approches précédentes, le nouveau protocole en un pot/deux étapes permet une construction modulaire de molécules densément fonctionnalisées où l'une des fonctionnalités azotées est une amine aliphatique primaire. L'une des caractéristiques de cette transformation est sa capacité à incorporer de nombreuses classes des nucléophiles (hétéro)arènes, des amines et de nucléophiles soufrés, y compris des molécules bioactives. Cette thèse décrit également la synthèse de divers tétrahydroquinolines à partir de nouveaux précurseurs des radicaux centrés sur l’azote de type N-benzylhydroxylamine et des alcènes appauvris en électrons qui a ainsi élargi le champ d’application de la réaction de Povarov classique
Aliphatic amines are at the core of fine chemical synthesis. They feature in more than 40 % of drug molecules but are also versatile precursors for constructing more complex bioactive molecules, natural products, and polymers. This dissertation describes the development of a general method for the rapid construction of β-arylethylamine and 1,2-vicinal diamine scaffolds from styrenes, hydroxylammonium triflate salts and different nucleophiles. Compared to previous approaches, this new sequential one pot/two-step protocol enables the modular construction of densely functionalized molecules in which one of the nitrogen functionalities is a primary aliphatic amine. This method accommodates a broad range of nucleophiles such as (hetero)aromatics, amines or thiols as well as bioactive molecules. This thesis also describes the development of new precursors of N-centered radicals such as N-benzylhydroxylamines and their application in the synthesis of tetrahydroquinolines. In contrast to the classical Povarov reaction, the new methodology accommodates electron-deficient and aliphatic alkenes, thereby expanding the chemical space of available tetrahydroquinoline scaffolds
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Lee, Jen Nan, und 李正南. „Synthesis of alpha-Azido-alpha,beta-Unsturated Ester and its Reaction with the Electron-Poor Alkenes“. Thesis, 1996. http://ndltd.ncl.edu.tw/handle/56643069540296867749.

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Buchteile zum Thema "Electron-poor alkenes"

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Lattanzi, Alessandra. „Non-covalent Organocatalytic Approach in the Asymmetric Epoxidation of Electron-Poor Alkenes: Recent Developments“. In Green Chemistry and Sustainable Technology, 113–35. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9751-7_5.

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Shibasaki, M., T. Ohshima und W. Itano. „Reaction of Electron-Poor Alkenes“. In Stereoselective Pericyclic Reactions, Cross Coupling, and C—H and C—X Activation, 1. Georg Thieme Verlag KG, 2011. http://dx.doi.org/10.1055/sos-sd-203-00307.

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Schobert, R., und G. J. Gordon. „By Reactions with Electron-Poor Alkenes and Alkynes“. In Heteroatom Analogues of Aldehydes and Ketones, 1. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-027-00867.

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„Olefin and Alkyne Functional Groups“. In The Chemical Biology of Carbon, 45–87. The Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/bk9781839169502-00045.

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The simplest carbon-based functional groups are alkenes (olefins) and the much rarer alkynes, containing only C–H and C–C bonds but no C–O, C–N, or C–S bonds. The biologic routes to both trans- and cis-alkenes are examined. The reactivity of olefins as either electron rich carbon nucleophiles or as electrophilic, electron poor carbon sinks depends on the structural and electronic context of the olefins and their partner reactants. The ability of 2-isopentenyl-PP to act as progenitor to an electrophilic allyl cation and 3-IPP to act as an olefinic nucleophile is the fundamental chemical logic for C–C bond formation in isoprenoid chain extension reactions. Epoxidation of olefins and nucleophilic addition to conjugated olefins reveal nucleophilic vs. electrophilic reactivity, respectively.
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Konferenzberichte zum Thema "Electron-poor alkenes"

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Vieira, Daniel Pais Pires, Leandro Lara de Carvalho und Vera Lúcia Patrocinio Pereira. „Diastereoselective Multicomponent [4+2]/[3+2] Cycloadditions of gamma-(S)-N,N-dibenzylamine Nitroalkenes Derivatives with Ethyl Vinyl Ether (EVE) and Electron-Poor Alkenes Using Li+- Containing Catalysts.“ In 14th Brazilian Meeting on Organic Synthesis. São Paulo: Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0138-2.

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