Relevant bibliographies by topics / Cyclopropanes 1

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  1. Journal articles
  2. Dissertations / Theses
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  4. Conference papers

Academic literature on the topic 'Cyclopropanes 1'

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

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Journal articles on the topic "Cyclopropanes 1"

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Craig, Alexander J., та Bill C. Hawkins. "The Bonding and Reactivity of α-Carbonyl Cyclopropanes". Synthesis 52, № 01 (2019): 27–39. http://dx.doi.org/10.1055/s-0039-1690695.

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The cyclopropane functionality has been exploited in a myriad of settings that range from total synthesis and methodological chemistry, to medical and materials science. While it has been seen in such a breadth of settings, the typical view of the cyclopropane moiety is that its reactivity is derived primarily from the release of ring strain. While this simplified view is a useful shorthand, it ignores the specific nature of cyclopropyl molecular orbitals. This review aims to present the different facets of cyclopropane bonding by examining the main models that have been used to explain the re
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Fadeev, Alexander A., Alexey O. Chagarovskiy, Anton S. Makarov, et al. "Synthesis of (Het)aryl 2-(2-hydroxyaryl)cyclopropyl Ketones." Molecules 25, no. 23 (2020): 5748. http://dx.doi.org/10.3390/molecules25235748.

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A simple general method for the synthesis of 1-acyl-2-(ortho-hydroxyaryl)cyclopropanes, which belong to the donor–acceptor cyclopropane family, has been developed. This method, based on the Corey–Chaykovsky cyclopropanation of 2-hydroxychalcones, allows for the preparation of a large diversity of hydroxy-substituted cyclopropanes, which can serve as promising building blocks for the synthesis of various bioactive compounds.
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Babu, Kaki Raveendra, Xin He, and Silong Xu. "Lewis Base Catalysis Based on Homoconjugate Addition: Rearrangement of Electron-Deficient Cyclopropanes and Their Derivatives." Synlett 31, no. 02 (2019): 117–24. http://dx.doi.org/10.1055/s-0039-1690753.

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Cyclopropane is one of the most reactive functionalities owing to its intrinsic ring strain. Transition-metal catalysis and Lewis acid catalysis have been extensively used in ring openings of cyclopropanes; however, Lewis base-catalyzed activation of cyclopropanes remains largely unexplored. Upon nucleophilic attack with Lewis bases, cyclopropanes undergo ring cleavage in a manner known as homoconjugate addition to form zwitterionic intermediates, which have significant potential for reaction development but have garnered little attention. Here, we present a brief overview of this area, with a
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Altamore, Timothy M., Oanh T. K. Nguyen, Quentin I. Churches, et al. "Concise Synthesis of Enantiomerically Pure (1'S,2'R)- and (1'R,2'S)-2S-Amino-3-(2'-aminomethyl-cyclopropyl)propionic Acid: Two E-Diastereoisomers of 4,5-Methano-L-lysine." Australian Journal of Chemistry 66, no. 9 (2013): 1105. http://dx.doi.org/10.1071/ch13309.

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A concise synthesis of both E-isomers of 2S-amino-3-(2′-aminomethyl-cyclopropyl)propionic acid, new methano-l-lysines, is described. The synthetic route includes nine steps from l-methionine, with a key step involving the cyclopropanation of an intermediate E-allylic alcohol. The resultant hydroxymethylcyclopropanes were readily separated and converted into the title α-amino acids. The stereochemistry around the cyclopropane rings was deduced by conducting the cyclopropanation in the presence of N,N,N′,N′-tetramethyl-d-tartaric acid diamide butylboronate, a chiral controller which is known to
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Song, Xixi, Junbiao Chang, Yuanyuan Zhu, Shuang Zhao, and Minli Zhang. "Diastereoselective Synthesis of Spirobarbiturate-Cyclopropanes through Organobase-Mediated Spirocyclopropanation of Barbiturate-Based Olefins with Benzyl Chlorides." Synthesis 51, no. 04 (2018): 899–906. http://dx.doi.org/10.1055/s-0037-1609637.

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The organobase-mediated diastereoselective spirocyclopropanation of barbiturate-based olefins with 2,4-disubstituted benzyl chlorides has been developed. The reactions were carried out efficiently to afford the desired spirobarbiturate-cyclopropanes in up to 95% yield with more than 20:1 dr in favor of anti-isomers. In order to extend synthetic utility of the spiro-products, a Lewis acid induced cyclopropane-ring-expansion isomerization was also demonstrated.
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Shi, Yongjia, Qian Gao, and Senmiao Xu. "Iridium-Catalyzed Asymmetric C–H Borylation Enabled by Chiral Bidentate Boryl Ligands." Synlett 30, no. 19 (2019): 2107–12. http://dx.doi.org/10.1055/s-0039-1690225.

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Asymmetric synthesis of optically pure organoboron compounds is a topic that has received a number of attentions owing to their particular importance in synthetic chemistry and drug discovery. We herein highlight recent advances in the iridium-catalyzed C–H borylation of diarylmethylamines and cyclopropanes enabled by chiral bidentate boryl ligands.1 Introduction2 Ir-Catalyzed Asymmetric C(sp2)–H Borylation of Diarylmethylamines3 Ir-Catalyzed Enantioselective C(sp3)–H Borylation of Cyclopropanes4 Conclusion
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Manna, Srimanta, and Andrey P. Antonchick. "[1+1+1] Cyclotrimerization for the Synthesis of Cyclopropanes." Angewandte Chemie 128, no. 17 (2016): 5376–79. http://dx.doi.org/10.1002/ange.201600807.

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Manna, Srimanta, and Andrey P. Antonchick. "[1+1+1] Cyclotrimerization for the Synthesis of Cyclopropanes." Angewandte Chemie International Edition 55, no. 17 (2016): 5290–93. http://dx.doi.org/10.1002/anie.201600807.

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Budynina, Ekaterina, Konstantin Ivanov, Ivan Sorokin, and Mikhail Melnikov. "Ring Opening of Donor–Acceptor Cyclopropanes with N-Nucleo­philes." Synthesis 49, no. 14 (2017): 3035–68. http://dx.doi.org/10.1055/s-0036-1589021.

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Ring opening of donor–acceptor cyclopropanes with various N-nucleophiles provides a simple approach to 1,3-functionalized compounds that are useful building blocks in organic synthesis, especially in assembling various N-heterocycles, including natural products. In this review, ring-opening reactions of donor–acceptor cyclopropanes with amines, amides, hydrazines, N-heterocycles, nitriles, and the azide ion are summarized.1 Introduction2 Ring Opening with Amines3 Ring Opening with Amines Accompanied by Secondary Processes Involving the N-Center3.1 Reactions of Cyclopropane-1,1-diesters with Pr
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Jones, P. G., and G. Schrumpf. "Substituted cyclopropanes. 5. 1-Cyanocyclopropanecarboxylic acid." Acta Crystallographica Section C Crystal Structure Communications 43, no. 8 (1987): 1576–79. http://dx.doi.org/10.1107/s0108270187091029.

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Dissertations / Theses on the topic "Cyclopropanes 1"

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Rofoo, Mazin. "Préparation de n-oxa bicyclo [6. 1. 0] nonanes par cyclisation d'alcools omega-éthyléniques induite par un électrophile : applications." Paris 11, 2004. http://www.theses.fr/2004PA112026.

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Nous examinons la réctivité des alcools éthyléniques avec les hexafluorophosphates d'iodo (i) et bromo (i) bis (collidine) en vue d'obtenir des éthers et lactones a 8 chaînons par réactions d'halo cyclisations. Dans un premier chapitre, nous étudions l'influence de l'introduction d'un cyclopropane dans la chaîne carbonée, ceux-ci possédant une double liaison c-c en position terminale. Nous examinons ensuite la réaction d'haloétherification de ces substrats a l'aide des réactifs iodé et bromé. Ces cyclisations sont effectuées dans ch2cl2 en ajoutant les substrats sur les réactifs. Les produits
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Cournoyer, Marie-Michèle. "Influence de la nature du carbène et de la chaîne reliant le carbène reliant au diène dans la réaction de cycloaddition (4+1) intramoléculaire et ouverture radicalaire de cyclopropanes." Mémoire, Université de Sherbrooke, 2012. http://hdl.handle.net/11143/5741.

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La réaction de cycloaddition-(4+1) entre un carbène électroniquement riche et un diène électroniquement pauvre est une réaction pouvant mener à différentes structures intéressantes. Cette réaction peut être effectuée de façon intramoléculaire pour obtenir une structure bicyclique comportant un cycle à cinq membres. Plusieurs facettes de cette réaction ont été étudiées dans le laboratoire du Professeur Claude Spino. Le premier chapitre de ce mémoire présentera l'étude de l'influence de la nature de la chaîne reliant le carbène au diène (substitution, hybridation des carbones) et de la nature de
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Hanlon, David James. "u-vinylidene and n-1-cyclopropenyliron complexes : chemistry and synthesis via 1, 1-dichlorocyclopropanes /." Full-text version available from OU Domain via ProQuest Digital Dissertations, 1985.

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Chawner, Stephen John. "Divergent synthesis of cyclopropane-containing fragments and lead-like compounds for drug discovery." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/56635.

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The cyclopropane ring is key to a large number of medicinally‑relevant compounds that possess a broad spectrum of biological activities. This thesis details the preparation of novel bifunctional cyclopropanes through a divergent functionalisation approach utilising two readily accessible cyclopropyl‑scaffolds. The cyclopropanes generated sampled new areas of chemical space whilst being suitable 3‑dimensional fragments and lead-like compounds for drug discovery. A novel CoII-catalysed cyclopropanation generates two diastereoisomeric bifunctional cyclopropyl-scaffolds from commercially available
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Ollivier, Jean. "Les cyclopropanols précurseurs de composés cyclopentaniques : application à la synthèse totale de produits naturels." Paris 11, 1986. http://www.theses.fr/1986PA112003.

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Les travaux exposés dans cette thèse sont relatifs : 1) à l'éthoxy-l cyclopropanol : sa condensation avec les acétyléniques métallés conduit aux cyclopropanols propargyliques qui, après réduction et silylation permettent d'obtenir des silo­xy-l vinyl-l cyclopropanes subissant par thermolyse l'extension de cycle C3 ---> C5 en éthers d ‘énols silyliques de cyclopentanones alkylables en cyclopentanones α, ʓ-disubstituées. Selon ce schéma réactionnel, nous avons pu réaliser la synthèse totale de la désoxy-ll prostaglandine E₂, produit naturel à propriétés hypotensives ; 2) à l'hydroxy-l cyclopr
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鄭旭明 and Xuming Zheng. "Resonance Raman intensity analysis studies of bond selective electronic excitation in 1,2-dihaloethanes and conformational effectson the A-band short-time photodissociation dynamics of 1-iodopropane,iodocyclohexane and iodocyclopentane." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B29913433.

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Zheng, Xuming. "Resonance Raman intensity analysis studies of bond selective electronic excitation in 1,2-dihaloethanes and conformational effects on the A-band short-time photodissociation dynamics of 1-iodopropane, iodocyclohexane and iodocyclopentane /." Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21929440.

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Yet, Larry. "Chapter I: Synthesis and Chemistry of 1-(Benzenesulfonyl)-2- (Trimethylsilyl)Cyclopropane : Chapter II: 1,1-(Dilithio)-1- (Benzenesulfonyl)-2-(Trimethylsilyl)Ethane as an Effective Synthetic Equivalent for Symmetrical.. /." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487864986611748.

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Illy, Nicolas. "Activation non-métallique de la polymérisation anionique par ouverture de cycle des cyclopropane-1,1-dicarboxylates : application à la synthèse de transporteurs transmembranaires." Phd thesis, Université Paris-Est, 2009. http://tel.archives-ouvertes.fr/tel-00481301.

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La base phosphazène ButP4 associée au thiophénol ou au bis (2-mercaptoéthyl) éther a été utilisée avec succès pour amorcer quantitativement la polymérisation anionique par ouverture de cycle des monomères cyclopropane-1,1-dicarboxylates de dialkyle. Pour des températures comprises entre 30 et 60°C dans le THF ou entre 30 et 100°C dans le toluène, le mécanisme observé est celui d'une polymérisation anionique vivante qui conduit à des polymères présentant des indices de polymolécularité faibles et dont les Mn expérimentaux (mesurés par SEC et RMN 1H) sont en accord avec les valeurs théoriques. D
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Lecornué, Frédéric. "Utilisation de la cyclopropanation de Kulinkovitch : préparation de cyclopropanols bicycliques 1, 2, 3-trisubstitués et application à la synthèse d'acides 1-aminocyclopropanecarboxyliques : construction d'oxacycloalcénones à cycle moyen et application à la synthèse formelle des (±)-héliannuols A, K et L." Paris 11, 2004. http://www.theses.fr/2004PA112079.

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Ce mémoire est consacré à la cyclopropanation inter- et intramoléculaire de Kulinkovich sur des esters avec des organomagnésiens secondaires seuls ou avec des alcènes terminaux en présence de tétraisopropylate de titane. Le premier chapitre est tout d'abord consacré à l'étude de la réactivité de divers bromures de cycloalkylmagnésium de 3 à 7 chaînons avec le 3-chloropropionate d'éthyle en présence de Ti(Oi-Pr)4. Nous avons ainsi préparé des cyclopropanols bicycliques 1,2,3-trisubstitués avec des rendements modérés, et montré que ces organomagnésiens (à l'exception des bromures de cyclopropyl-
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Book chapters on the topic "Cyclopropanes 1"

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Salaün, Jacques R. Y. "Synthesis and synthetic applications of 1-donor substituted cyclopropanes with ethynyl, vinyl and carbonyl groups." In Topics in Current Chemistry. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/bfb0111228.

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Demaison, J. "65 C3H6Ar Cyclopropane – argon (1/1)." In Symmetric Top Molecules. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-47532-3_67.

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Demaison, J. "66 C3H6Kr Cyclopropane – krypton (1/1)." In Symmetric Top Molecules. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-47532-3_68.

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Demaison, J. "67 C3H6Ne Cyclopropane – neon (1/1)." In Symmetric Top Molecules. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-47532-3_69.

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Demaison, J. "502 C4H10O Cyclopropane - methanol (1/1)." In Asymmetric Top Molecules. Part 2. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-10400-8_250.

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Demaison, J. "317 C3H6ClF Cyclopropane - chlorine fluoride (1/1)." In Asymmetric Top Molecules. Part 2. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-10400-8_65.

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Hirota, E., K. Kuchitsu, T. Steimle, J. Vogt, and N. Vogt. "91 C4H6O2 Cyclopropane – carbon dioxide (1/1)." In Molecules Containing Three or Four Carbon Atoms and Molecules Containing Five or More Carbon Atoms. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41504-3_92.

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Winkelmann, J. "Diffusion of cyclopropane (1); air (2)." In Gases in Gases, Liquids and their Mixtures. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-49718-9_630.

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Winkelmann, J. "Diffusion of helium (1); cyclopropane (2)." In Gases in Gases, Liquids and their Mixtures. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-49718-9_187.

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Winkelmann, J. "Diffusion of helium (1); cyclopropane (2)." In Gases in Gases, Liquids and their Mixtures. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-49718-9_356.

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Conference papers on the topic "Cyclopropanes 1"

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Tabarez, Carlos, Alexander Khrizman, Patrick Moyna, and Guillermo Moyna. "Mechanistic Studies of the Formation of Functionalized Cyclopropanes through Photoisomerization of Tropolone Diels-Alder Adducts." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0074-1.

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Tabarez, Carlos, Alexander Khrizman, Patrick Moyna, and and Guillermo Moyna. "Mechanistic Studies of the Formation of Functionalized Cyclopropanes through Photoisomerization of Tropolone Diels-Alder Adducts." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0085-1.

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Zhou, Zhihui, Yiling Zhang, Jie He, Jianqing Zhang, Qinrong Jiang, and Shan Xu. "Synthesis of N-(4-fluorophenyl)-1-(pyrrolidine-1-carbonyl) cyclopropane-1-carboxamide." In 3RD INTERNATIONAL CONFERENCE ON FRONTIERS OF BIOLOGICAL SCIENCES AND ENGINEERING (FBSE 2020). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0048414.

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Hou, Shanshan, Yuanzhang Zhou, Wei Lu, Jiaqian Han, Ziwei Zhang, and Shan Xu. "Synthesis of 3-(4-aminophenyl) cyclopropane-1, 1,2,2-tetracarbonitrile." In 2016 4th International Conference on Mechanical Materials and Manufacturing Engineering. Atlantis Press, 2016. http://dx.doi.org/10.2991/mmme-16.2016.92.

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