Relevant bibliographies by topics / [2+2] photocycloadditions

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Academic literature on the topic '[2+2] photocycloadditions'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "[2+2] photocycloadditions"

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Streit, Ursula, and Christian G. Bochet. "The arene–alkene photocycloaddition." Beilstein Journal of Organic Chemistry 7 (April 28, 2011): 525–42. http://dx.doi.org/10.3762/bjoc.7.61.

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In the presence of an alkene, three different modes of photocycloaddition with benzene derivatives can occur; the [2 + 2] or ortho, the [3 + 2] or meta, and the [4 + 2] or para photocycloaddition. This short review aims to demonstrate the synthetic power of these photocycloadditions.
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Christl, Manfred, and Max Braun. "[2+2] Photocycloadditions of Homobenzvalene." Liebigs Annalen 1997, no. 6 (1997): 1135–41. http://dx.doi.org/10.1002/jlac.199719970613.

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Tedaldi, Lauren M., Abil E. Aliev, and James R. Baker. "[2 + 2] Photocycloadditions of thiomaleimides." Chemical Communications 48, no. 39 (2012): 4725. http://dx.doi.org/10.1039/c2cc31673k.

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Meyer, Lars, Nacira Alouane, Kerstin Schmidt, and Paul Margaretha. "Photocycloaddition of cyclohex-2-enones to acrylonitrile." Canadian Journal of Chemistry 81, no. 6 (2003): 417–22. http://dx.doi.org/10.1139/v03-016.

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The photocycloaddition of cyclohex-2-enones 1a, 1b, and 5a–5c to acrylonitrile (2) in benzene has been studied. The reactions proceed with moderate regioselectivity and with preferential formation of diastereomeric mixtures of endo- and exo-5-oxobicyclo[4.2.0]octane-7-carbonitriles 3, 4, and 6–8. Very similar relative rates of conversion to products are observed in the photocycloadditions of 1b, 5a, and 5b to 2 and methacrylonitrile (9), respectively. In contrast, 5,5-dimethylcyclohex-2-enone (1b) forms cycloadducts with 2,3-dimethylbut-2-ene (12) as efficiently as with the unsaturated nitrile
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Becker, Dan, and Yael Cohen-Arazi. "Temperature Effect on [2 + 2] Intramolecular Photocycloadditions†." Journal of the American Chemical Society 118, no. 35 (1996): 8278–84. http://dx.doi.org/10.1021/ja9531079.

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Tedaldi, Lauren M., Abil E. Aliev, and James R. Baker. "ChemInform Abstract: [2 + 2] Photocycloadditions of Thiomaleimides." ChemInform 43, no. 36 (2012): no. http://dx.doi.org/10.1002/chin.201236107.

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Becker, D., and N. Haddad. "About the stereochemistry of intramolecular [2+2] photocycloadditions." Tetrahedron Letters 27, no. 52 (1986): 6393–96. http://dx.doi.org/10.1016/s0040-4039(00)87817-x.

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FLEMING, S. A., C. L. BRADFORD, and J. J. GAO. "ChemInform Abstract: Regioselective and Stereoselective [2 + 2] Photocycloadditions." ChemInform 29, no. 24 (2010): no. http://dx.doi.org/10.1002/chin.199824268.

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Crimmins, Michael T., and Lisa E. Guise. "Siloxanes as temporary tethers in [2+2] photocycloadditions." Tetrahedron Letters 35, no. 11 (1994): 1657–60. http://dx.doi.org/10.1016/0040-4039(94)88312-2.

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Meyer, Catherine, Olivier Piva, and Jean-Pierre Pete. "[2+2] Photocycloadditions and Photorearrangements of 2-Alkenylcarboxamido-2-cycloalken-1-ones." Tetrahedron 56, no. 26 (2000): 4479–89. http://dx.doi.org/10.1016/s0040-4020(00)00366-5.

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Dissertations / Theses on the topic "[2+2] photocycloadditions"

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Sinnwell, Michael Alan. "Organic fluorine in solid-state [2+2] photocycloadditions." Diss., University of Iowa, 2017. https://ir.uiowa.edu/etd/5853.

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The use of principles of supramolecular chemistry to direct reactions in the crystalline state has emerged as a reliable means to facilitate highly selective reactions in a solvent-free environment. In this context, we have utilized the fixed spatial arrangements of molecules in a crystal lattice to promote intermolecular [2+2] photodimerizations. We have shown how principles of supramolecular chemistry can be used to preorganize olefins to undergo intermolecular [2+2] photodimerizations in the solid state. Explorations into fluorinated and partially fluorinated olefinic substrates has allowed
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Tedaldi, L. M. "Novel methods in [2+2] photocycloadditions and cysteine modification." Thesis, University College London (University of London), 2011. http://discovery.ucl.ac.uk/1310478/.

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The [2+2] photocycloaddition is a powerful but underused synthetic route to cyclobutanes. The underuse of this reaction can stem from unreliable yields, which can, in part, be attributed to secondary photoreactions of the desired product. The first part of this thesis describes investigations into new methods of trapping out primary photoproducts before secondary photoreactions can take place. Lithium borohydride was demonstrated as a successful trapping agent in intramolecular [2+2] enone-olefin photocycloadditions. Eight ketone products from the [2+2] photocycloaddition of vinylogous esters
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Roupany, A. "Novel [2+2] photocycloadditions of vinylogous amides and imides." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1414225/.

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This thesis describes investigations into the [2+2] photocycloaddition reaction of vinylogous amides and imides contained within five membered rings with alkenes; the aim of this being the synthesis of aminocyclobutanes. The initial focus is towards intramolecular reactions, synthesising vinylogous amides with a tethered alkene. Irradiation of these compounds leads to a [2+2] photocycloaddition followed by a spontaneous retro-Mannich fragmentation, affording keto-imines. Upon addition of a Boc group to these vinylogous amides, and irradiation of the resultant vinylogous imides, the retro-Manni
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Neubauer, Stefan. "Photocycloadditionen von 2-donorsubstituierten Propennitrilen an Cumarinderivate - Photocycloadditions of 2-donor substituted propenenitriles to coumarin derivatives." Gerhard-Mercator-Universitaet Duisburg, 2001. http://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-05222001-100519/.

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Reactions of photoexcited coumarins and their thia analogues with captodative alkenes have been investigated, with special emphasis on the nature of the excited states and the specific influence of the substrates on regio- and stereoselectivity of the observed [2+2]-photocycloadditions. Aside of two coumarin thiones all coumarins investigated regioselectively add captodative alkenes at the pyranone moeity giving rise to head-to-tail [2+2]-photocycloadducts with donor-endo adducts as prevailing isomers. The observed regio- and stereoselectivities can be best explained if a 1,4-biradical is assu
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Lappenbusch, William Charles. "Participation of Alkenylboronate Esters in [2+2] Enone-Olefin Photocycloadditions." W&M ScholarWorks, 1993. https://scholarworks.wm.edu/etd/1539625809.

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Meyer, Catherine. "Photocycloadditions 2+2 intramoleculaires regio- et diastereoselectives et photorearrangements d'enones cycliques conjuguees." Reims, 1996. http://www.theses.fr/1996REIMS020.

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La reaction de photocycloaddition 2+2 est une reaction importante permettant la synthese de derives cyclobutaniques utiles pour la preparation de produits naturels. Le cas particulier de la reaction intramoleculaire montre un meilleur controle de la regio- et de la stereoselectivite. L'etude du comportement photochimique d'enones cycliques conjuguees nous a permis de mettre au point une reaction de photocycloaddition 2+2 intramoleculaire regiospecifique et diastereoselective. Cependant, des produits heterocycliques tels que des lactames ou des oxazinones ont pu etre isoles. Ils resultent d'une
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PIVA, LE BLANC LE BLANC SYLVIE. "Photocycloadditions 2+2 intramoleculaires de derives 3-oxocycloalcene carboxyliques d'alcenyle : controle de la selectivite." Reims, 1996. http://www.theses.fr/1996REIMS038.

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L'utilisation d'un lien temporaire dans les cycloadditions intramoleculaires permet de controler la regio- et la diastereoselectivite de ces reactions. En photocycloaddition 2+2, de nombreuses etudes utilisant ce principe ont ete realisees avec succes. Cependant peu de travaux ont fait intervenir le groupement ester. Pourtant les cycloadduits de type lactonique produits par une telle reaction, pourraient constituer d'excellents synthons pour l'acces a differents produits naturels. Les derives 3-oxocycloalcene carboxyliques se sont deja reveles d'excellents chromophores pour la photocycloadditi
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VERRAT, CELINE. "Photocycloadditions 2 + 2 intramoleculaires d'ethers de polyphenols : acces au squelette de produits naturels heterocycliques." Reims, 2000. http://www.theses.fr/2000REIMS007.

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Dans une premiere partie, sera abordee la photochimie de derives o-alcenyles du resorcinol et de l'anisole ainsi que l'application de la photocycloaddition 2 + 2 a l'elaboration de synthons fonctionnalises. Nous avons mis au point une methode d'acces preparative aux benzocyclobutenes par voie photochimique permettant la synthese du 3-methoxy(benzocyclobutenyl)ethanol et du 3-methoxy(benzocyclobutenyl)propanol deux benzocyclobutenes fonctionnalises. Dans un deuxieme temps, la synthese et les applications synthetiques des benzocyclobutenes et des orthoquinodimethanes ont ete rappelees puisqu'ils
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BERTRAND, CYRILLE. "Etude theorique et experimentale de photocycloadditions 2 + 2 diastereoselectives et de la thermolyse d'enaminoesters n-substitues." Reims, 2000. http://www.theses.fr/2000REIMS027.

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Ce travail qui combine la chimie experimentale et la chimie theorique, s'interesse a la photocycloaddition d'une enone sur un ethylenique et a la thermolyse d'enaminoesters n-substitues. La photocycloaddition 2 + 2 intramoleculaire est une methode de synthese de composes cyclobutaniques permettant une bonne induction asymetrique. La technique utilisee ici consiste a placer un espaceur chiral entre l'enone et l'ethylenique de facon a creer et a controler plusieurs centres asymetriques en une seule etape. Pour le reactif etudie dans ce travail, nous avons obtenu une cycloaddition regiospecifique
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Ng, Stephanie M. "Investigation of intramolecular [2+2] photocycloadditions : using new cycloaddition/fragmentation strategies toward medium ring-containing natural products." Thesis, Boston College, 2008. http://hdl.handle.net/2345/1353.

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Thesis advisor: Marc L. Snapper<br>Intramolecular [2+2] photocycloadditions have been studied: (i) Previous studies in our group have demonstrated that there is a regiochemical dependence of intramolecular [2+2] photocycloadditions on the solvent employed. In order to understand the generality of hydrogen bonding effects of photochemical reactions of β-hydroxyl enones, we examined the photochemical outcome of enones with both acyclic and cyclic olefin tethers. (ii) An application of an intramolecular [2+2] photocycloaddition/ fragmentation strategy to form 5-8-5 ring systems has been demonstra
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Books on the topic "[2+2] photocycloadditions"

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Woolford, Jason A. The Double [3+2] Photocycloaddition Reaction. Springer-Verlag Berlin Heidelberg, 2011.

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Woolford, Jason A. The Double [3+2] Photocycloaddition Reaction. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22860-5.

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Woolford, Jason A. The Double [3+2] Photocycloaddition Reaction. Springer, 2011.

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Woolford, Jason A. A. The Double [3+2] Photocycloaddition Reaction. Springer, 2013.

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Muller, Cheryl Lynn. [2+2] photocycloaddition reactions of dioxenones and vinylogous amides, and subsequent transformations. 1990.

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Mechanistic studies of [2+2] photocycloaddition of dioxenones and photodynamic transport of metal ions through liquid membrane. 1991.

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Scott, Robert Dean. The synthetic utility of the intramolecular [2+2]-photocycloaddition of vinylogous amides: An efficient method for the preparation of nitrogen-containing ring systems in optically pure form. 1990.

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Book chapters on the topic "[2+2] photocycloadditions"

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Woolford, Jason A. "Introduction and Background." In The Double [3+2] Photocycloaddition Reaction. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22860-5_1.

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Woolford, Jason A. "Discovery of the Double [3+2] Photocycloaddition." In The Double [3+2] Photocycloaddition Reaction. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22860-5_2.

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Woolford, Jason A. "A Brief Discussion on Fenestranes." In The Double [3+2] Photocycloaddition Reaction. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22860-5_3.

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Woolford, Jason A. "Investigation of the Double [3+2] Photocycloaddition Reaction for the Synthesis of Fenestranes." In The Double [3+2] Photocycloaddition Reaction. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22860-5_4.

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Woolford, Jason A. "Attempted Synthesis of a “Criss-Cross” Double [3+2] Photocycloadduct." In The Double [3+2] Photocycloaddition Reaction. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22860-5_5.

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Woolford, Jason A. "Attempts Toward the Synthesis of Alternative Structures Via the Double [3+2] Photocycloaddition." In The Double [3+2] Photocycloaddition Reaction. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22860-5_6.

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Woolford, Jason A. "Conclusion." In The Double [3+2] Photocycloaddition Reaction. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22860-5_7.

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Woolford, Jason A. "Experimental." In The Double [3+2] Photocycloaddition Reaction. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22860-5_8.

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Fleming, Steven A., Cara L. Bradford, and J. Jerry Gao. "Regioselective and Stereoselective [2 + 2] Photocycloadditions." In Organic Photochemistry. CRC Press, 1997. http://dx.doi.org/10.1201/b16837-6.

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Sonoda, Yoriko. "[2+2]- Photocycloadditions in the Solid State." In CRC Handbookof Organic Photochemistry and Photobiology, Volumes 1 & 2, Second Edition. CRC Press, 2003. http://dx.doi.org/10.1201/9780203495902.ch73.

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