Bibliografías temáticas / Carbocyclic systems

Literatura académica sobre el tema "Carbocyclic systems"

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Publicado: 18 de mayo de 2024

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Artículos de revistas sobre el tema "Carbocyclic systems"

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Boyd, Derek R., Narain D. Sharma, Ludmila V. Modyanova, Jonathan G. Carroll, John F. Malone, Christopher CR Allen, John TG Hamilton, David T. Gibson, Rebecca E. Parales y Howard Dalton. "Dioxygenase-catalyzed cis-dihydroxylation of pyridine-ring systems". Canadian Journal of Chemistry 80, n.º 6 (1 de junio de 2002): 589–600. http://dx.doi.org/10.1139/v02-062.

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Toluene dioxygenase-catalyzed dihydroxylation, in the carbocyclic rings of quinoline, 2-chloroquinoline, 2-methoxyquinoline, and 3-bromoquinoline, was found to yield the corresponding enantiopure cis-5,6- and -7,8-dihy dro diol metabolites using whole cells of Pseudomonas putida UV4. cis-Dihydroxylation at the 3,4-bond of 2-chloroquino line, 2-methoxyquinoline, and 2-quinolone was also found to yield the heterocyclic cis-dihydrodiol metabolite, (+)-cis-(3S,4S)-3,4-dihydroxy-3,4-dihydro-2-quinolone. Heterocyclic cis-dihydrodiol metabolites, resulting from dihydroxylation at the 5,6- and 3,4-bonds of 1-methyl 2-pyridone, were isolated from bacteria containing toluene, naphthalene, and biphenyl dioxygenases. The enantiomeric excess (ee) values (>98%) and the absolute configurations of the carbocyclic cis-dihydrodiol metabolites of quinoline substrates (benzylic R) and of the heterocyclic cis-diols from quinoline, 2-quinolone, and 2-pyridone substrates (allylic S) were found to be in accord with earlier models for dioxygenase-catalyzed cis-dihydroxylation of carbocyclic arenes. Evidence favouring the dioxygenase-catalyzed cis-dihydroxylation of pyridine-ring systems is presented.Key words: dioxygenases; cis-dihydroxylation, pyridines, 2-pyridones, absolute configurations.
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Williams, Andrew C. "The synthesis of carbocyclic aromatic systems". Contemporary Organic Synthesis 3, n.º 6 (1996): 535. http://dx.doi.org/10.1039/co9960300535.

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Ando, Wataru. "Polyorganosilicon Compounds in Strained Carbocyclic Systems". Bulletin of the Chemical Society of Japan 69, n.º 1 (enero de 1996): 1–16. http://dx.doi.org/10.1246/bcsj.69.1.

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Gleiter, Rolf y Daniel B. Werz. "Reactions of Metal-Complexed Carbocyclic 4π Systems". Organometallics 24, n.º 18 (agosto de 2005): 4316–29. http://dx.doi.org/10.1021/om0504351.

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WILLIAMS, A. C. "ChemInform Abstract: The Synthesis of Carbocyclic Aromatic Systems". ChemInform 28, n.º 19 (4 de agosto de 2010): no. http://dx.doi.org/10.1002/chin.199719292.

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ANDO, W. "ChemInform Abstract: Polyorganosilicon Compounds in Strained Carbocyclic Systems". ChemInform 27, n.º 17 (5 de agosto de 2010): no. http://dx.doi.org/10.1002/chin.199617312.

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Al Mamari, Hamad H. "Ir-Catalyzed ortho-C-H Borylation of Aromatic C(sp2)-H Bonds of Carbocyclic Compounds Assisted by N-Bearing Directing Groups". Reactions 5, n.º 2 (1 de mayo de 2024): 318–37. http://dx.doi.org/10.3390/reactions5020016.

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C-H borylation is a powerful strategy for the construction of C-B bonds due to the synthetic versatility of C-B bonds. Various transition metals affect the powerful functionalization of C-H bonds, of which Ir is the most common. Substrate-directed methods have enabled directed Ir-catalyzed C-H borylation at the ortho position. Amongst the powerful directing groups in Ir-catalyzed C-H borylation are N-containing carbocyclic systems. This review covers substrate-directed Ir-catalyzed ortho-C-H borylation of aromatic C(sp2)-H bonds in N-containing carbocyclic compounds, such as anilines, amides, benzyl amines, hydrazones, and triazines.
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Erian, Ayman W., Yvette A. Issac y Sherif M. Sherif. "A Novel Synthesis of Sulfone Systems as Antimicrobial Agents". Zeitschrift für Naturforschung B 55, n.º 1 (1 de enero de 2000): 127–32. http://dx.doi.org/10.1515/znb-2000-0119.

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The applicability and synthetic potency of novel reagent, 2-aryl-1,1-dicyano-3-(phenylsulfo-nyl)propenes 3 to develop an expeditious convenient synthetic route of unique polyfunctionally substituted carbocyclic and heterocyclic sulfone systems is reported. Chemical and spec­troscopic evidence for the structures of the newly synthesized compounds are described. Some of the obtained compounds were tested for their antimicrobial activity
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Doraghi, Fatemeh, Mohammad Mahdi Aghanour Ashtiani, Fatemeh Moradkhani, Bagher Larijani y Mohammad Mahdavi. "Developments and applications of α-bromonitrostyrenes in organic syntheses". RSC Advances 14, n.º 21 (2024): 14835–46. http://dx.doi.org/10.1039/d4ra02474e.

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In this work, we have described the use of α-bromonitrostyrenes in the synthesis of a wide variety of carbocyclic and heterocyclic compounds under organocatalysis, metal catalysis, and base-catalysis systems as well as catalyst-free reactions.
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Wang, Zheng, Yanping Ma, Jingjing Guo, Qingbin Liu, Gregory A. Solan, Tongling Liang y Wen-Hua Sun. "Bis(imino)pyridines fused with 6- and 7-membered carbocylic rings as N,N,N-scaffolds for cobalt ethylene polymerization catalysts". Dalton Transactions 48, n.º 8 (2019): 2582–91. http://dx.doi.org/10.1039/c8dt04892d.

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Mixed carbocyclic-fused bis(arylimino)pyridine-cobalt(ii) chlorides, on activation with either MAO or MMAO, displayed high activities for ethylene polymerization affording linear polyethylene waxes; high selectivity for vinyl end-groups is a feature of MAO-promoted systems.
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Tesis sobre el tema "Carbocyclic systems"

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Giustra, Zachary Xavier. "Studies of BN-Isosteres of Carbocyclic Systems". Thesis, Boston College, 2018. http://hdl.handle.net/2345/bc-ir:108092.

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Thesis advisor: Shih-Yuan Liu
The first three chapters of this dissertation elaborate on certain facets of the isosteric relationship between different types of boron-nitrogen-containing heterocycles and the corresponding all-carbon compounds. In this vein, Chapter 1 describes selective photoisomerization of aromatic 1,2-dihydro-1,2-azaborines to BN-analogues of bicyclo[2.2.0]hexa-2,5-diene (Dewar benzene). In one instance, the photoisomer product was further derivatized into a series of disubstituted cyclobutanes through manipulations of the boron functionality. Chapter 2 discloses a combined experimental/theoretical mechanistic investigation of preliminary hydrogen release from the amine borane unit in a pair of BN-cycloalkanes. In Chapter 3, the kinetics of complementary dehydrogenation of the alkyl units in a BN-cyclohexene derivative are compared with those of related six-membered carbocycles. Chapter 4 treats with the separate subject of enantioselective silylation of glycerol by a catalytic strategy centered around reversible covalent binding of substrate hydroxyl groups
Thesis (PhD) — Boston College, 2018
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Chemistry
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Secci, Francesco. "Strained carbocyclic systems in the synthesis of bioactive products : methodologies and total synthesis". Paris 11, 2006. http://www.theses.fr/2006PA112296.

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Jandl, Christian Verfasser], Roland A. [Akademischer Betreuer] [Fischer, Ullrich [Gutachter] Englert, Polly L. [Gutachter] Arnold y Roland A. [Gutachter] Fischer. "Carbocyclic Carbenes and Beyond: Functionalised Cycloheptatriene Systems as Versatile Ligands in Palladium Chemistry / Christian Jandl ; Gutachter: Ullrich Englert, Polly L. Arnold, Roland A. Fischer ; Betreuer: Roland A. Fischer". München : Universitätsbibliothek der TU München, 2018. http://nbn-resolving.de/urn:nbn:de:bvb:91-diss-20180215-1398715-1-5.

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Jandl, Christian [Verfasser], Roland A. [Akademischer Betreuer] Fischer, Ullrich [Gutachter] Englert, Polly L. [Gutachter] Arnold y Roland A. [Gutachter] Fischer. "Carbocyclic Carbenes and Beyond: Functionalised Cycloheptatriene Systems as Versatile Ligands in Palladium Chemistry / Christian Jandl ; Gutachter: Ullrich Englert, Polly L. Arnold, Roland A. Fischer ; Betreuer: Roland A. Fischer". München : Universitätsbibliothek der TU München, 2018. http://d-nb.info/1153545837/34.

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薩加. "The Transition Metal Catalyzed New Organic Transformation of Enynes for Synthesis of Highly Functionalized Carbocyclic & Heterocyclic Systems". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/73839021793932674798.

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博士
國立清華大學
化學系
102
This dissertation describes the development of new synthetic organic transformation by using gold and zinc salts. Transition metal-catalyzed organic transformations such as Oxidative Cyclization, Di-stereo and Enatioselective [2+2+3] cycloaddition, 1,4-Dioxo Functionalizations, 1,4-Metathesis Reactions of appropriately functionalized organic molecules are described in this dissertation. For sake of convenience and better understanding, the thesis is divided into four chapters. The first chapter deals with the Gold-Catalyzed Oxidative Cyclization of 1,5-Enynes Using External Oxidants (8-Methylquinoline N-Oxide) to deliver indanone frameworks. Such indanone core is one of the most commonly encountering skeletons in nature. The core structure of the resulting products are construct through a formal reactions proceed through prior oxidations of alkyne to form α-carbonyl intermediates, followed by intramolecular carbocyclizations. The second chapter deals with the Gold-catalyzed diastereo- and enantioselective [2+2+3]-cycloaddition reactions of 1,6-enynes with nitrones. The utility of such reactions is manifested by a wide substrate scopes of 1,6-enynes and nitrones. This Gold-catalyzed diastereo- and enantioselective [2+2+3]-cycloaddition reactions of 1,6-enynes with nitrones deliver 1,2-Oxazepane core which has wide aplication in structural and biological importance. The third chapter describes new 1,4-oxo functionalizations of 3-en-1-ynes based on a hydrative oxidation approach. The one-pot dioxo reactions were applicable to various 3-en-1-ynes including unactivated 3-aryl-3-en-1-ynes, giving Z- or E-configured 2-en-1,4-dicarbonyl compounds selectively. In this chapter, mechanistic analysis supported an initial formation of furan intermediates, generated from carbonyl-assisted alkenyl fluorinations of hydration intermediates. This work reports the first success for 1,4-oxo functionations of readily available 3-en-1-ynes to offer highly functionalized alkenes. The fourth chapter presents Catalyst-dependent metathesis reactions between 3-en-1-ynamides and nitrosoarenes are described. Particularly notable are the unprecedented 1,4-metathesis reactions catalyzed by Ag(I) or Zn(II) to give 3-imidoylalkynes and benzaldehyde. With 3-en-1-ynamides bearing a cycloalkenyl group, 1,4-oxoimination products were produced efficiently without molecular fragmentation. We have developed metathesis/alkynation cascades for terminal 3-imidoylalkynes and benzaldehyde species generated in situ, to manifest 1,4-hydroxyimination reactions of 3-en-1-ynes.
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Baburao, Huple Deepak y 迪帕. "Synthesis of Heterocyclic &; Carbocyclic Systems via Silver and Gold Catalyzed [3+2],[4+2]and [2+2+2]-Cycloadditions &; Oxidative Cyclization". Thesis, 2013. http://ndltd.ncl.edu.tw/handle/97878077621973421785.

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Capítulos de libros sobre el tema "Carbocyclic systems"

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Roy, M. N., V. N. G. Lindsay y A. B. Charette. "Synthesis of Carbocyclic Bicyclo Ring Systems". En Stereoselective Synthesis 1 Stereoselective Reactions of Carbon—Carbon Double Bonds, 1. Georg Thieme Verlag KG, 2011. http://dx.doi.org/10.1055/sos-sd-201-00409.

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"2. Benzocyclobutene and Related Systems". En Carbocyclic Three- and Four-Membered Ring Compounds, editado por Armin de Meijere. Stuttgart: Georg Thieme Verlag, 1997. http://dx.doi.org/10.1055/b-0035-112579.

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Patrick, Graham L. "Cyclic systems in drug synthesis". En An Introduction to Drug Synthesis. Oxford University Press, 2015. http://dx.doi.org/10.1093/hesc/9780198708438.003.0005.

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This chapter explores cyclic systems in drug synthesis. It notes the vital role that cyclic systems play in drug structures which would be referred to as carbocyclic or heterocyclic. Additionally, the chapter notes that the ring systems made up of carbon atoms could can vary in sizes as well. It highlights the importance of ring systems in terms of ensuring binding groups are correctly positioned as ideal scaffolds. The chapter also discusses the two synthetic strategies that would ensure that cyclic structures can be introduced into a drug structure. It notes thediscusses examples of syntheses involving intramolecular cyclisationscyclizations, concerted intermolecular cyclisationscyclizations, intermolecular coupling, and cyclisation cyclization reactions. Moreover, it looks into at the synthesis of dihydropyridines.
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"Thiophene Systems Containing Three or More Carbocyclic Fused Rings". En Chemistry of Heterocyclic Compounds: A Series Of Monographs, 315–55. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470186565.ch6.

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Graham, A. y M. Robinson. "Tricyclic Systems: Central Carbocyclic Ring with Fused Five-membered Rings". En Comprehensive Heterocyclic Chemistry III, 1135–99. Elsevier, 2008. http://dx.doi.org/10.1016/b978-008044992-0.00921-4.

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Buckley, B. R. "Tricyclic Systems: Central Carbocyclic Ring with Fused Six-membered Rings". En Comprehensive Heterocyclic Chemistry III, 1229–68. Elsevier, 2008. http://dx.doi.org/10.1016/b978-008044992-0.00923-8.

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Conboy, Darren y Fawaz Aldabbagh. "Tricyclic Systems: Central Carbocyclic Ring With Fused Five-Membered Rings". En Reference Module in Chemistry, Molecular Sciences and Chemical Engineering. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-818655-8.00017-2.

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McKinnon, David M. "Tricyclic Systems: Central Carbocyclic Ring with Fused Five-membered Rings". En Comprehensive Heterocyclic Chemistry II, 841–74. Elsevier, 1996. http://dx.doi.org/10.1016/b978-008096518-5.00165-9.

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Nichol, Kenneth J. "Tricyclic Systems: Central Carbocyclic Ring with Fused Six-membered Rings". En Comprehensive Heterocyclic Chemistry II, 921–45. Elsevier, 1996. http://dx.doi.org/10.1016/b978-008096518-5.00167-2.

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Taber, Douglass. "Enantioselective Organocatalyzed Construction of Carbocyclic Rings". En Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0072.

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One of the most practical ways to construct enantiomerically-enriched carbocyclic systems is to effect asymmetric transformation of preformed prochiral rings. Choon-Hong Tan of the National University of Singapore observed (Chem. Commun. 2008, 5526) that allylic halides such as 1 coupled with malonates such as 2 to give the α-methylene ketone 3 in high ee. Xinmiao Liang of the Dalian Institute of Chemical Physics and Jinxing Ye of the East China University of Science and Technology reported (Chem. Commun. 2008, 3302) that nitromethane 5 could be added to enones such as 4 to construct cyclic quaternary stereogenic centers such as that of 6. The addition of the cyclohexanone 7 to the acceptor 8 described (Chem. Commun. 2008, 6315) by Yixin Lu, also of the National University of Singapore led to the creation of two new cyclic stereogenic centers. Polycarbocyclic prochiral rings are also of interest. Teck-Peng Loh of Nanyang Technological University devised (Tetrahedron Lett. 2008, 49, 5389) the steroid AB donor 10, that added to crotonaldehyde 1 to give the single enantiomerically-pure diastereomer 12. Nitro alkenes are excellent Michael acceptors. Dieter Enders of RWTH Aachen took advantage of this (Angew. Chem. Int. Ed. 2008, 47, 7539) in developing the addition of aldehydes such as 14 to the nitroalkene 13. Intramolecular alkylation ensued, to deliver the product 15 as a single diastereomer. Guofu Zhong, also of Nanyang Technological University, established (Organic Lett. 2008, 10, 3425; Organic Lett. 2008, 10, 3489) an approach to cyclopentane construction based on the Michael addition of β-ketoesters such as 16 and 19 to nitroalkenes such as 17 and 20. Intramolecular nitro aldol (Henry) addition led to 18, while an intramolecular Michael addition delivered 21. Damien Bonne and Jean Rodriguez of Aix-Marseille Université employed (Organic Lett. 2008, 10, 5409) intramolecular dipolar cycloaddition to convert the initial adduct between 22 and 23 to the cyclopentane 24. They also prepared cyclohexane derivatives using this approach. The diketone 25 is prochiral. Benjamin List of the Max-Planck Institut, Mülheim devised (Angew. Chem. Int. Ed. 2008, 47, 7656) an organocatalyst that mediated the intramolecular aldol cyclization of 25 to 26 in high ee.
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