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Relevant bibliographies by topics / Electrophilic cyclization

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Academic literature on the topic 'Electrophilic cyclization'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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Journal articles on the topic "Electrophilic cyclization"

1

Ismailov, Ismail E., Ivaylo K. Ivanov, and Valerij Ch Christov. "Trifunctionalized Allenes. Part IV. Cyclization Reactions of 4-Phosphorylated 5-Hydroxyhexa-2,3-dienoates." Letters in Organic Chemistry 17, no. 9 (2020): 726–33. http://dx.doi.org/10.2174/1570178617666200225104238.

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This manuscript focuses on the reactions of 4-phosphorylated 5-hydroxyhexa-2,3-dienoates with protected or unprotected hydroxy groups involving 5-endo-trig cyclizations. Reactions with electrophiles result in mixtures of the 2,5-dihydro-1,2-oxaphosphole-5-carboxylates and the 5-phosphorylfuran- 2(5H)-ones by competitive electrophilic cyclization due to the neighboring phosphonate (phosphine oxide) and the carboxylate groups participation. 4-Phosphorylated 5-hydroxyhexa-2,3-dienoates were smoothly transformed into the corresponding 4-phosphoryl-2,5-dihydrofuran-2-carboxylates by using 5 mol % o

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2

Aeyad, Tahani, Jason Williams, Anthony Meijer, and Iain Coldham. "Lithiation–Substitution of N-Boc-2-phenylazepane." Synlett 28, no. 20 (2017): 2765–68. http://dx.doi.org/10.1055/s-0036-1590857.

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Preparation of 2,2-disubstituted azepanes was accomplished from N-tert-butoxy(N-Boc)-2-phenylazepane by treatment with butyllithium then electrophilic quench. The lithiation was followed by in situ ReactIR spectroscopy and the rate of rotation of the carbamate was determined by variable temperature (VT)-NMR spectroscopy and by DFT studies. Most electrophiles add α to the nitrogen atom but cyanoformates and chloroformates gave ortho-substituted products. Cyclic carbamates were formed from an aldehyde or ketone electrophile. Kinetic resolution with sparteine was only poorly selective. Removal of

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Sakakura, Akira, and Kazuaki Ishihara. "Stereoselective Electrophilic Cyclization." Chemical Record 15, no. 4 (2015): 728–42. http://dx.doi.org/10.1002/tcr.201500005.

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Kulciţki, Veaceslav, Marina Grinco, Pavel Vlad, and Nicon Ungur. "Electrophilic Cyclization of Diterpenoids." Chemistry Journal of Moldova 1, no. 1 (2006): 22–35. http://dx.doi.org/10.19261/cjm.2006.01(1).07.

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A review of diterpenoid cyclization initiated by electrophilic reagents is provided. Conventional protonic and Lewis acids are examined along with superacids as initiators of cyclization cascade. An emphasis is placed on the use of cyclization reactions as a tool for the synthesis of compounds with potential practical utility. The review contains 74 references.

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Slyvka, Natalia, Yuri Gevaza, and Lesya Saliyeva. "Electrophilic Intramolecular Cyclization of 1-(N-alkenyl)-6-methylpyrimidine-2,4-diones." Chemistry & Chemical Technology 12, no. 3 (2018): 285–89. http://dx.doi.org/10.23939/chcht12.03.285.

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Barrett, Anthony, Tsz-Kan Ma, and Thomas Mies. "Recent Developments in Polyene Cyclizations and Their Applications in Natural Product Synthesis." Synthesis 51, no. 01 (2018): 67–82. http://dx.doi.org/10.1055/s-0037-1610382.

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Cascade polyene cyclization reactions are highly efficient and elegant bioinspired transformations that involve simultaneous multiple bond constructions to rapidly generate complex polycyclic molecules. This review summarizes the most prominent work on a variety of cationic and radical cascade cyclizations and their applications in natural product synthesis published between 2014 and 2018.1 Introduction2 Cationic Polyene Cyclizations2.1 Lewis Acid Mediated Polyene Cyclizations2.2 Brønsted Acid Mediated Polyene Cyclizations2.3 Halogen Electrophile Initiated Polyene Cyclizations2.4 Sulfur Electr

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Slivka, Mikhailo, and Mikhailo Onysko. "The Use of Electrophilic Cyclization for the Preparation of Condensed Heterocycles." Synthesis 53, no. 19 (2021): 3497–512. http://dx.doi.org/10.1055/s-0040-1706036.

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AbstractCondensed heterocycles are well-known for their excellent biological effects and they are undeniably important compounds in organic chemistry. Electrophilic cyclization reactions are widely used for the synthesis of mono-heterocyclic compounds. This review highlights the utility of electrophilic cyclization reactions as an effective generic tool for the synthesis of various condensed heterocycles containing functional groups that are able to undergo further chemical transformations, such as nucleophilic substitution, elimination, re-cyclization, cleavage, etc. This review describes the

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Deng, Danfeng, Dayun Huang, Xiangyu Sun, and Biwen Gao. "Recent Advances in the Tandem Difunctionalization of Alkynes: Mechanism-Based Classification." Synthesis 53, no. 19 (2021): 3522–34. http://dx.doi.org/10.1055/a-1486-2158.

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AbstractRecent advances on the tandem difunctionalization of alkynes in the last decade (2010–2020) are summarized into five categories based on the type of mechanism: (1) radical addition and coupling for the synthesis of polysubstituted ketones and alkenes, (2) electrophilic addition of alkynes, (3) reactions mediated by haloalkynes or copper acetylides, (4) the preparation of cyclic compounds via radical processes, palladium-catalyzed reactions or conjugate additions, and (5) cyclic compounds as intermediates in ring openings. Herein, radical, electrophilic and nucleophilic reactions are di

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Robin, Sylvie, and Ge´rard Rousseau. "Electrophilic cyclization of unsaturated amides." Tetrahedron 54, no. 45 (1998): 13681–736. http://dx.doi.org/10.1016/s0040-4020(98)00698-x.

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Crone, Benedikt, Stefan F Kirsch, and Klaus-Daniel Umland. "Electrophilic Cyclization of 1,5-Enynes." Angewandte Chemie International Edition 49, no. 27 (2010): 4661–64. http://dx.doi.org/10.1002/anie.201001113.

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Dissertations / Theses on the topic "Electrophilic cyclization"

1

Just, Ziwei W. "Synthesis of 2(3H)-furanones via electrophilic cyclization." [Ames, Iowa : Iowa State University], 2007.

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2

Demirci, Deniz. "Synthesis Of 4-phenylselenyl-1h-pyrazoles By Electrophilic Cyclization." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613910/index.pdf.

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In this study, the synthesis of 5-ferrocenyl/aryl-4-(phenylselenyl)-1H-pyrazole derivatives was investigated since the integration of ferrocenyl and selenium moieties into pyrazole derivatives may increase their current biological activities. Initially, the starting propargyl aldehydes were synthesized from corresponding acetylenes. Subsequently, propargyl aldehydes were reacted with hydrazines to yield corresponding hydrazones. Then the in situ synthesized hydrazones were subjected to electrophilic cyclization with phenylselenyl chloride, which afforded 5-ferrocenyl/aryl-4-(phenylselenyl)-1H-

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Kesharwani, Tanay. "Studies in electrophilic cyclization, palladium migration and cationic polymerization." [Ames, Iowa : Iowa State University], 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3330842.

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Worlikar, Shilpa Arvind. "Palladium-catalyzed and electrophilic cyclization approaches to carbocycles and heterocycles." [Ames, Iowa : Iowa State University], 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3320129.

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Mehta, Saurabh. "Palladium-catalyzed and electrophilic cyclization approaches to important heterocycles and carbocycles." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3389126.

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Karahan, Dag Fulya. "Synthesis Of 5-ferrocenyl-4-((4-nitrophenyl)sulfenyl)-1h-pyrazoles By Electrophilic Cyclization." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613443/index.pdf.

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Pyrazoles have been intensely studied in the design and synthesis of biologically active agents because they display considerable medicinal activities. Recent studies have shown that integration of a ferrocenyl unit with structural features of pyrazoles can result in the formation of the new products with enhanced or/and unexpected biological activity since several ferrocene derivatives have already been illustrated to be active against a number of tumors. Therefore, we have investigated the electrophilic cyclizations of the hydrazones to afford 5-ferrocenyl-4-((4-nitrophenyl)sulfenyl)-substit

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Shah, Parin Ajay. "Synthesis of terpenoids using a tandem cationic cascade cyclization-electrophilic aromatic substitution reaction." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6639.

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The terpene and terpenoid family of compounds is considered to be the largest group of natural products. These compounds not only display great diversity in their structural features but are also known to have a multitude of biological activities including but not limited to anti-bacterial, anti-cancer, anti-inflammatory, and anti-HIV properties. Remarkably, all the terpenoids formed in nature come from two molecules viz. isopentenyl pyrophosphate and its isomer, dimethylallyl pyrophosphate both consisting of just five carbons but assembled in many ways. Nature utilizes highly efficient, enzym

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García, Barrado Alejandro. "New Methodologies for the Regio- and Stereoselective Electrophilic Cyanation of Alkynes." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E549-8.

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Karabiyikoglu, Sedef. "Synthesis Of Ferrocenyl Substituted Pyrazoles By Sonogashira And Suzuki-miyaura Cross-coupling Reactions." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/3/12612139/index.pdf.

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Pyrazoles constitute one of the most important classes of heterocyclic compounds due to their interesting chemical and biochemical features. Researchers have studied many pyrazole containing structures for almost over a century in order to investigate the various biological activities possessed by these molecules. A new and important trend in these studies is to produce ferrocenyl substituted pyrazoles since ferrocene attracts considerable interest in the research field of organometallic and bioorganometallic chemistry because of its valuable chemical characteristics like high stability, low t

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Trabulsi, Houssam. "Préparation d’iminolactones par cyclisation électrophile d’hydroxamates insaturés : étude de leurs propriétés." Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112052.

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Au cours de nos différents travaux sur les réactions de cyclisations électrophiles diastéréosélectives 5-endo d’hydroxamates insaturés par l’hexafluorophosphate de bromo biscollidine (HBB). Nous avons constaté la formation d’imidates cycliques et nous avons mis en évidence un réarrangement lactames-imidates. Une fragmentation de type Beckman aboutissant à la formation d’une famille de cyano énones, anisi qu’une nouvelle formation d’imidates a été étudiée.Dans l’introduction générale, nous avons rapporté différents exemples d’halolactonisations électrophiles 5-endo et 5-exo, énantio et diastéri

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Book chapters on the topic "Electrophilic cyclization"

1

Larock, Richard C. "Synthesis of Heterocycles and Carbocycles by Electrophilic Cyclization of Alkynes." In Acetylene Chemistry. Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527605487.ch2.

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Keller, P. A. "Electrophilic Cyclization." In Six-Membered Hetarenes with One Nitrogen or Phosphorus Atom. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-015-01770.

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Toyota, S., and T. Iwanaga. "Electrophilic Cyclization." In Monocyclic Arenes, Quasiarenes, and Annulenes. Georg Thieme Verlag KG, 2010. http://dx.doi.org/10.1055/sos-sd-045-00817.

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4

"Electrophilic Cyclization." In Indole Ring Synthesis. John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781118695692.part3.

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5

Jiang, X., and H. Liu. "4.07 Electrophilic Cyclization." In Comprehensive Organic Synthesis II. Elsevier, 2014. http://dx.doi.org/10.1016/b978-0-08-097742-3.00409-2.

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Toyota, S., and T. Iwanaga. "Electrophilic Cyclization of Alkynes." In Monocyclic Arenes, Quasiarenes, and Annulenes. Georg Thieme Verlag KG, 2010. http://dx.doi.org/10.1055/sos-sd-045-00716.

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7

Schatz, J., and M. Seler. "Electrophilic Cyclization of -Selanylenynes." In Science of Synthesis Knowledge Updates KU 2010/4. Georg Thieme Verlag KG, 2010. http://dx.doi.org/10.1055/sos-sd-109-00034.

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"Electrophilic Cyclization of Pyrrole." In Indole Ring Synthesis. John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781118695692.ch58.

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Margaretha, P. "Electrophilic Cyclization of Alkynyl -Methyloximes." In Science of Synthesis Knowledge Updates KU 2010/4. Georg Thieme Verlag KG, 2010. http://dx.doi.org/10.1055/sos-sd-111-00313.

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10

Hou, X. L., X. S. Peng, K. S. Yeung, and H. N. C. Wong. "Electrophilic Cyclization of Propargylic Oxirane Derivatives." In Fully Unsaturated Small-Ring Heterocycles and Monocyclic Five-Membered Hetarenes with One Heteroatom. Georg Thieme Verlag KG, 2011. http://dx.doi.org/10.1055/sos-sd-109-00113.

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Conference papers on the topic "Electrophilic cyclization"

1

Santana, Amanda S., Nadla S. Cassemiro, Diego B. de Carvalho, et al. "Electrophilic Cyclization of (Z)-Thiobutenynes: Synthesis of 3-Iodothiophenes." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0369-1.

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Rampon, Daniel S., Aloir A. Merlo, and Paulo H. Schneider. "Synthesis of New Liquid-Crystalline Selenophenes via Electrophilic Cyclization of (Z)-Selenoenynes." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0011-1.

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3

Gai, Rafaela, Ricardo F. Schumacher, and Gilson Zeni. "Synthesis of tetrahydroselenophene derivatives by electrophilic cyclization of 1-butylseleno-4-alkynes." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0356-1.

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4

Amaral, Simone Schneider, and Paulo Henrique Schneider. "Regioselective Synthesis of 3-Haloalkyl-isoxazoles from the Electrophilic Cyclization of Halogenated Oximes." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0053-1.

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Roehrs, Juliano A., Benhur Godoi, Tamiris B. Grimaldi, Adriane Sperança, and Gilson Zeni. "Electrophilic Cyclization of 2-Chalcogen-N-Alkynylimidazoles: Versatile Access to Imidazo[2,1-b]Chalcogenazoles." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0345-2.

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