Relevant bibliographies by topics / Ring formation (Chemistry) Rearrangements (Chemistry)

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Ring formation (Chemistry) Rearrangements (Chemistry)'

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

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Journal articles on the topic "Ring formation (Chemistry) Rearrangements (Chemistry)"

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Jutzi, P. "Strategies in the cyclopentadienyl chemistry of p-block elements." Pure and Applied Chemistry 75, no. 4 (2003): 483–94. http://dx.doi.org/10.1351/pac200375040483.

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Synthetic strategies in the cyclopentadienyl (Cp) chemistry of the groups 13–15 elements, are based on the following phenomena: (1) low barriers for haptotropic and dyotropic shifts, for sigmatropic rearrangements, and for other types of Cp migration; (2) stabilization of elements in their low-oxidation state by π-complexation; (3) tuning of steric andelectronic effects by suitable ring substituents; and (4) easy homolytic and heterolytic cleavage of El-C(Cp) bonds. These strategies are applied to: (a) the formation of a Si2Me4 doubly bridged dicyclopentadienyl cobalt complex, (b) the chemistr
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Butenschön, Holger. "Arene chromium complexes with functionalized anellated rings. Selective formation of highly substituted polycycles." Pure and Applied Chemistry 74, no. 1 (2002): 57–62. http://dx.doi.org/10.1351/pac200274010057.

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Tricarbonylchromium complexes of benzocyclobutenone, benzocyclobutenedione, and 1,3-indandione are readily prepared by hydrolysis of the complexes of the corresponding acetals. Reduction of the benzocyclobutenone complex gives rise to an oxy-anion-driven ring opening to the corresponding ortho-quinodimethane intermediate, which can be trapped with dienophiles. Addition of 1-ethoxy-1-lithioethene allows a stereoselective ring expansion followed by an anionic ketol rearrangement with complete diastereoselectivity. Addition of 1-lithio-1-methoxyallene gives rise to a rare anionic 1-vinylcyclobute
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de Bruin, Bas, and Colet te Grotenhuis. "Radical-type Reactions Controlled by Cobalt: From Carbene Radical Reactivity to the Catalytic Intermediacy of Reactive o-Quinodimethanes." Synlett 29, no. 17 (2018): 2238–50. http://dx.doi.org/10.1055/s-0037-1610204.

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In this account, we summarize our recent efforts in the fields of ‘open-shell organometallic chemistry’ and ‘metalloradical catalysis’. We focus in particular on the use of so-called ‘carbene radicals’ for the synthesis of a variety of useful synthons for organic chemistry. We further show that unexpected reactivity arises from catalytic synthesis of unusual o-quinone methide and o-quinodimethane intermediates that undergo subsequent rearrangements to uncommon products.1 Introduction2 General (Fischer-Type) Carbene and Nitrene Reactivity and Their Relation to Carbene and Nitrene Radical Reacti
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Guan, Zong, Jan C. Namyslo, Martin H. H. Drafz, Martin Nieger, and Andreas Schmidt. "Dimerisation, rhodium complex formation and rearrangements of N-heterocyclic carbenes of indazoles." Beilstein Journal of Organic Chemistry 10 (April 10, 2014): 832–40. http://dx.doi.org/10.3762/bjoc.10.79.

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Deprotonation of indazolium salts at low temperatures gives N-heterocyclic carbenes of indazoles (indazol-3-ylidenes) which can be trapped as rhodium complexes (X-ray analysis). In the absence of Rh, the indazol-3-ylidenes spontaneously dimerize under ring cleavage of one of the N,N-bonds and ring closure to an indazole–indole spiro compound which possesses an exocyclic imine group. The E/Z isomers of the imines can be separated by column chromatography when methanol is used as eluent. We present results of a single crystal X-ray analysis of one of the E-isomers, which equilibrate in solution
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Mahmoodi, Niusha, Qi Qian, Louis Y. P. Luk, and Martin E. Tanner. "Rearrangements in the mechanisms of the indole alkaloid prenyltransferases." Pure and Applied Chemistry 85, no. 10 (2013): 1935–48. http://dx.doi.org/10.1351/pac-con-13-02-02.

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The indole prenyltransferases are a family of metal-independent enzymes that catalyze the transfer of a prenyl group from dimethylallyl diphosphate (DMAPP) onto the indole ring of a tryptophan residue. These enzymes are remarkable in their ability to direct the prenyl group in either a “normal” or “reverse” fashion to positions with markedly different nucleophilicity. The enzyme 4-dimethylallyltryptophan synthase (4-DMATS) prenylates the non-nucleophilic C-4 position of the indole ring in free tryptophan. Evidence is presented in support of a mechanism t
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Sato, Tadatake, Hiroyuki Niino, and Akira Yabe. "Ketene Formation in Benzdiyne Chemistry: Ring Cleavage versus Wolff Rearrangement." Journal of the American Chemical Society 125, no. 39 (2003): 11936–41. http://dx.doi.org/10.1021/ja035826q.

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Yokoshima, Satoshi. "Synthesis of Polycyclic Natural Products through Skeletal Rearrangement." Synlett 31, no. 20 (2020): 1967–75. http://dx.doi.org/10.1055/s-0040-1707904.

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Construction of rings through reliable reactions followed by changes in the ring size or the connectivity through skeletal rearrangement provides molecules with a wide range of skeletons. In this account, our syntheses of polycyclic natural products through skeletal rearrangement are discussed.1 Introduction2 Synthesis through Changes in the Ring Size3 Synthesis by Biomimetic Strategies4 Synthesis through Metathesis5 Synthesis through Temporary Formation of a Ring6 Conclusion
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Girard, Michel, John W. ApSimon та Carol P. Huber. "γ-Lactam formation by a novel intramolecular rearrangement involving β-cyanoketones. Crystal structure of 1,7-dioxo-10a-methyl-perhydrophenanthrene-4a,8a-carbolactam". Canadian Journal of Chemistry 65, № 1 (1987): 191–94. http://dx.doi.org/10.1139/v87-030.

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Treatment of cyano-triketone 1 with bases such as ethoxide or methoxide ions affords the tetracyclic lactam 4 in high yield. Its formation can be rationalized by invoking a novel intramolecular rearrangement. Crystals of 4 are orthorhombic, a = 10.351 (3), b = 11.503(2), c = 11.935 (2) Å, Z = 4, space group P212121, R = 0.043 for 2037 observations. The structure analysis establishes the formation of a γ-lactam, with the lactam ring bridging a six-membered ring. The three six-membered rings are in chair conformations with some distortions, and the lactam ring is envelope shaped.
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Rybalkin, Vladimir P., Sofiya Yu Zmeeva, Lidiya L. Popova, et al. "Synthesis and highly efficient light-induced rearrangements of diphenylmethylene(2-benzo[b]thienyl)fulgides and fulgimides." Beilstein Journal of Organic Chemistry 16 (July 22, 2020): 1820–29. http://dx.doi.org/10.3762/bjoc.16.149.

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2-Benzo[b]thienyl fulgides and fulgimides containing bulky diphenylmethylene substituents were synthesized in the form of their ring-opened E- or Z-isomers. In contrast to the majority of known fulgides/fulgimides, that form colored ring-closed structures under UV irradiation, the obtained compounds undergo an irreversible transformation leading to decoloration of their solutions. This rearrangement with the formation of the dihydronaphthalene core appeared to be by 2–3 orders of magnitude more efficient than for the known diphenylmethylene(aryl(hetaryl))fulgides. The molecular structures of E
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Hauer, Bernhard, Jamie F. Bickley, Julien Massue, Paula CA Pena, Stanley M. Roberts, and John Skidmore. "Biomimetic reactions in organic synthesis: Semi-pinacol rearrangements of some spirocyclic epoxyalcohols derived from Juliá-Colonna asymmetric epoxidations." Canadian Journal of Chemistry 80, no. 6 (2002): 546–50. http://dx.doi.org/10.1139/v02-061.

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Epoxy tert-alcohols have been prepared from (E)-enones in a two-step approach consisting of Juliá–Colonna asymmetric epoxidation followed by Grignard alkylation of the epoxyketone. On treatment with sub-stoichiometric amounts of Yb(OTf)3 these trans-epoxyalcohols underwent efficient stereoselective semi-pinacol rearrangement to afford anti-α-phenyl-β-hydroxy-ketones (aldols). Under the same conditions, spirocyclic epoxyalcohols derived from 1-tetralone and 1-benzosuberone undergo either ring contraction (via semi-pinacol rearrangement) or fragmentation. A mechanistic rationale is presented to
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Dissertations / Theses on the topic "Ring formation (Chemistry) Rearrangements (Chemistry)"

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老永康 and Wing-hong Lo. "Novel rearrangements of dioxodibenz[b,f]azocine." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B3121437X.

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Lo, Wing-hong. "Novel rearrangements of dioxodibenz[b, f]azocine /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18597671.

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Jones, Alan Morenc. "The synthesis of medium-sized ring containing libraries using oxidative fragmentation and rearrangement strategies /." St Andrews, 2009. http://hdl.handle.net/10023/663.

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Moss, Neil. "Divinylcyclopropane rearrangements : preparation of tricyclic ring systems and a formal total synthesis of (±)-quadrone." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25942.

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The first section of this thesis describes three model studies involving the synthesis of the divinylcyclopropanes (135), (136), and (137) and the subsequent thermal rearrangement of these compounds to provide the interesting tricyclic compounds (139), (140), and (141). [Formula Omitted] The second section of this thesis describes a formal total synthesis of the antitumor sesquiterpenoid (±)-quadrone (34). The synthesis is based on the chemistry developed in the model studies and involves the thermal rearrangement of the divinylcyclopropane (304) as the key step. The resulting product, compoun
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Bohnert, Gary J. "A 4+3 cycloaddition / quasi-favorskii rearrangement approach to the total synthesis of sterpurene /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p3091900.

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郭乃超 and Nai-chiu Kwok. "Some chemistry of dibenzo-azocine, -azonine and -azecine rings, attempted synthesis of 6, 12-dioxodibenzo[b,f]oxocin, and novelreactions and rearrangements of deoxybenzoin carboxylic acidderivatives." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1992. http://hub.hku.hk/bib/B31210843.

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Kwok, Nai-chiu. "Some chemistry of dibenzo-azocine, -azonine and -azecine rings, attempted synthesis of 6, 12-dioxodibenzo[b, f]oxocin, and novel reactions and rearrangements of deoxybenzoin carboxylic acid derivatives /." [Hong Kong : University of Hong Kong], 1992. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13387613.

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Knott, Jane Marie. "Studies on Pyridine n-oxides." Thesis, University of Oxford, 1995. http://ora.ox.ac.uk/objects/uuid:cc74d06b-9840-4695-9f47-961583da147c.

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The work described herein is directed towards the Claisen rearrangements and [3+2] cycloaddition reaction of pyridine N-oxide systems. The pyridine N-oxide molecule is a very versatile and useful synthetic intermediate for the construction of more complex pyridines. Chapter 1 contains a review of work carried out within the group towards Claisen rearrangement of benzene-type systems. The acid catalysed rearrangement of these systems affords a high degree of regioselectivity. A literature survey of the [3+2] cycloaddition reaction of both aliphatic nitrones and aromatic N-oxides with various di
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Liu, Gu. "Target identification and validation studies in chemical biology & Synthesis of medium-sized ring containing compounds via oxidative fragmentation." Thesis, University of St Andrews, 2010. http://hdl.handle.net/10023/986.

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Part I of this thesis describes the development of bioactive small molecules of relevance to the study of the apicomlexan parasite Toxoplasma gondii into useful chemical tools. The research includes the target identification and validation studies, using both chemical and biological methods. Chapter 1 provides an overview of chemical genetics with a particular emphasis on methods for the identification of the protein targets of bioactive small molecules. The concept of biochemical protein target identification techniques was introduced with a detailed discussion of interesting applications fro
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MacCorquodale, Finlay. "Radical rearrangements of unsaturated ring derivatives and the investigation of routes to polynitroxides." Thesis, University of St Andrews, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278104.

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Books on the topic "Ring formation (Chemistry) Rearrangements (Chemistry)"

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Valters, Raimonds E. Ring-chain tautomerism. Plenum, 1985.

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Wilhelm, Flitsch, and Katritzky Alan R, eds. Ring-chain tautomerism. Plenum Press, 1985.

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Hesse, Manfred. Ring enlargement in organic chemistry. VCH, 1991.

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1933-, Tebby John C., ed. Alkynes in cycloadditions. Wiley, 2014.

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Appelbe, Ruth. Synthetic applications of cationic arene-alkene cyclisations. University College Dublin, 1997.

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Margetic, Davor. Microwave assisted cycloaddition reactions. Nova Science Publishers, 2012.

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Byrne, Maeve. The synthesis and cyclisation of 2-bromo-3-ethoxypropanones. University College Dublin, 1998.

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I, Gevaza I͡U. Ėlektrofilʹnai͡a vnutrimolekuli͡arnai͡a t͡siklizat͡sii͡a olefinov. Nauk. dumka, 1990.

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Harmata, Michael. Advances in cycloaddition. JAI Press, 1999.

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Zugrăvescu, Ion. Cicloadiții 3+2 dipolare. Editura Academiei Republicii Socialiste România, 1987.

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Book chapters on the topic "Ring formation (Chemistry) Rearrangements (Chemistry)"

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Taber, Douglass. "New Methods for C-N Ring Construction." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0055.

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Chaozhong Li of the Shanghai Institute of Organic Chemistry demonstrated (Organic Lett. 2008, 10, 4037) facile and selective Cu-catalyzed β-lactam formation, converting 1 to 2. Paul Helquist of the University of Notre Dame devised (Organic Lett. 2008, 10, 3903) an effective catalyst for intramolecular alkyne hydroamination, converting 3 into the imine 4. Six-membered ring construction worked well also. Jon T. Njardarson of Cornell University found (Organic Lett. 2008, 10, 5023) a Cu catalyst for the rearrangement of alkenyl aziridines such as 5 to the pyrroline 6. Philippe Karoyan of the UPMC, Paris developed (J. Org. Chem. 2008, 73, 6706) an interesting chiral auxiliary directed cascade process, converting the simple precursor 7 into the complex pyrrolidine 9. Sherry R. Chemler of the State University of New York, Buffalo devised (J. Am. Chem. Soc. 2008, 130, 17638) a chiral Cu catalyst for the cyclization of 10, to give 12 with substantial enantiocontrol. Wei Wang of the University of New Mexico demonstrated (Chem. Commun. 2008, 5636) the organocatalyzed condensation of 13 and 14 to give 16 with high enantio- and diastereocontrol. Two complementary routes to azepines/azepinones have appeared. F. Dean Toste of the University of California, Berkeley showed (J. Am. Chem. Soc. 2008, 130, 9244) that a gold complex catalyzed the condensation of 17 and 18 to give 19. Frederick G. West of the University of Alberta found (Organic Lett. 2008, 10, 3985) that lactams such as 20 could be ring-expanded by the addition of the propiolate anion 21. Takeo Kawabata of Kyoto University extended (Organic Lett . 2008, 10, 3883) “memory of chirality” studies to the cyclization of 23, demonstrating that 24 was formed in high ee. Paul V. Murphy of University College Dublin took advantage (Organic Lett . 2008, 10, 3777) of the well-known intramolecular addition of azides to alkenes, showing that the intermediate could be intercepted with nucleophiles such as thiophenol, to give the cyclized product 26 with high diastereocontrol.
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Rečnik, Simon, Jurij Svete, and Branko Stanovnik. "Rearrangements and Ring Contractions of Heteroaryldiazonium Salts and Azides." In 19th International Congress on Heterocyclic Chemistry. Elsevier, 2003. http://dx.doi.org/10.1016/b978-0-08-044304-1.50312-9.

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Knight, David W. "Ring Formation by 5-endo-dig Cyclization." In Advances in Heterocyclic Chemistry. Elsevier, 2019. http://dx.doi.org/10.1016/bs.aihch.2018.09.004.

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"Synthetic routes from anthracenes (A-ring formation)." In The Chemistry and Biology of Benz[a]anthracenes. Cambridge University Press, 1988. http://dx.doi.org/10.1017/cbo9780511753183.004.

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"Synthetic routes from phenanthrenes (D-ring formation)." In The Chemistry and Biology of Benz[a]anthracenes. Cambridge University Press, 1988. http://dx.doi.org/10.1017/cbo9780511753183.005.

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Haida, Abderrazak Ben, and Philip Hodge. "The formation of cyclic oligomers during step-growth polymerization." In Polymer Chemistry. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780198503095.003.0010.

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Step-growth polymerization is controlled both by the efficiency of the synthetic routes chosen (as indicated in Chapter 4) and by statistical considerations. In particular, the formation of the desired polymer is almost always accompanied by a cyclic oligomer fraction. As the dilution increases, the chances of cyclization also increase, since polymerization is a second-order process involving the reaction between linear species, whereas cyclization, involving the (intramolecular) reaction between the two ends of a linear molecule, is inherently a first-order process. Cyclization is a particular feature of the early stages of a step-growth polymerization (up to extents of reaction of 98–99%), where a proportion of the end groups that react are on the same molecule. Hence, cyclics form. Since the chances of meeting of the end groups decrease rapidly as the distance between them increases, the cyclics are of relatively low molecular weight, that is, they are oligomers. Further reaction leads mainly to linear molecules, although at extremely high conversions the number of end groups is quite small and intramolecular reactions essentially terminate the process, such that it might be expected that all chains ultimately cyclize. Practically though, the levels of conversion necessary to obtain these very large rings are extremely high and difficult to obtain (either by virtue of side reactions, monomer imperfections, or simply the level of viscosity of high molecular weight polymer solutions). What is usually obtained, therefore, is a mixture of cyclics and linear molecules. However, since cyclic oligomers often differ considerably in, for example, solubility compared to their high molar mass linear homologues, separation is often relatively straightforward. The commercial importance of polymers produced by step-growth polymerization gives a particular significance to understanding the nature of such materials. The presence of cyclic oligomers can be detrimental to the polymer properties since their presence could cause problems during processing. For instance, cyclic oligomers of polyethylene terephthalate (PET) tend to migrate to the surface of spun fibres and, under certain conditions, they crystallize to produce a surface ‘bloom’ which interferes with subsequent dyeing. More recently, it is the reverse of cyclization, namely ring-opening polymerization, which has been a particular focus of attention.
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"Formation of Quinoxalines from Compounds Containing a Furan Ring." In Chemistry of Heterocyclic Compounds: A Series Of Monographs. John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470186558.ch35.

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Yamase, Toshihiro. "Chapter 243 Luminescence of Polyoxometallolanthanoates and Photochemical Nano‐Ring Formation." In Handbook on the Physics and Chemistry of Rare Earths Volume 39. Elsevier, 2009. http://dx.doi.org/10.1016/s0168-1273(08)00003-2.

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Lambert, Tristan H. "C–O Ring Formation." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0044.

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The enantioselective bromocyclization of dicarbonyl 1 to form dihydrofuran 3 using thiocarbamate catalyst 2 was developed (Angew. Chem. Int. Ed. 2013, 52, 8597) by Ying-Yeung Yeung at the National University of Singapore. Access to dihydrofuran 5 from the cyclic boronic acid 4 and salicylaldehyde via a morpholine-mediated Petasis borono-Mannich reaction was reported (Org. Lett. 2013, 15, 5944) by Xian-Jin Yang at East China University of Science and Technology and Jun Yang at the Shanghai Institute of Organic Chemistry. Chiral phosphoric acid 7 was shown (Angew. Chem. Int. Ed. 2013, 52, 13593) by Jianwei Sun at the Hong Kong University of Science and Technology to catalyze the enantioselective acetalization of diol 6 to form tetrahydrofuran 8 with high stereoselectivity. Jan Deska at the University of Cologne reported (Org. Lett. 2013, 15, 5998) the conversion of glutarate ether 9 to enantiopure tetrahy­drofuranone 10 by way of an enzymatic desymmetrization/oxonium ylide rearrange­ment sequence. Perali Ramu Sridhar at the University of Hyderabad demonstrated (Org. Lett. 2013, 15, 4474) the ring-contraction of spirocyclopropane tetrahydropyran 11 to produce tetrahydrofuran 12. Michael A. Kerr at the University of Western Ontario reported (Org. Lett. 2013, 15, 4838) that cyclopropane hemimalonate 13 underwent conver­sion to vinylbutanolide 14 in the presence of LiCl and Me₃N•HCl under microwave irradiation. Eric M. Ferreira at Colorado State University developed (J. Am. Chem. Soc. 2013, 135, 17266) the platinum-catalyzed bisheterocyclization of alkyne diol 15 to fur­nish the bisheterocycle 16. Chiral sulfur ylides such as 17, which can be synthesized easily and cheaply, were shown (J. Am. Chem. Soc. 2013, 135, 11951) by Eoghan M. McGarrigle at the University of Bristol and University College Dublin and Varinder K. Aggarwal at the University of Bristol to stereoselectively epoxidize a variety of alde­hydes, as exemplified by 18. The amine 20-catalyzed tandem heteroconjugate addition/Michael reaction of quinol 19 and cinnamaldehyde to produce bicycle 21 with very high ee was reported (Chem. Sci. 2013, 4, 2828) by Jeffrey S. Johnson at the University of North Carolina, Chapel Hill. Quinol ether 22 underwent facile photorearrangement–cycloaddition to 23 under irradiation, as reported (J. Am. Chem. Soc. 2013, 135, 17978) by John A. Porco, Jr. at Boston University and Corey R. J. Stephenson, now at the University of Michigan.
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Sethiya, Ayushi, Nusrat Sahiba, and Shikha Agarwal. "Role of Click Chemistry in Organic Synthesis." In Current Topics in Chirality - From Chemistry to Biology. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96146.

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Click chemistry involves highly efficient organic reactions of two or more highly functionalized chemical entities under eco-benign conditions for the synthesis of different heterocycles. Several organic reactions such as nucleophilic ring-opening reactions, cyclo-additions, nucleophilic addition reactions, thiol-ene reactions, Diels Alder reactions, etc. are included in click reactions. These reactions have very important features i.e. high functional group tolerance, formation of a single product, high atom economy, high yielding, no need for column purification, etc. It also possesses several applications in drug discovery, supramolecular chemistry, material science, nanotechnology, etc. Being highly significant and valuable, we have elaborated on several aspects of click reactions in organic synthesis in this chapter. Recent advancements in the field of organic synthesis using click chemistry approach have been deliberated by citing last five years articles.
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Conference papers on the topic "Ring formation (Chemistry) Rearrangements (Chemistry)"

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Hassan, Mohamed, Hanan Salah, and Eman Abdalla. "Ring Rearrangements and Reactivity of 3-((4-oxo-4H-chromen-3-yl)methylene)-4-phenyl-1H-[1,5]benzodiazepin-2(3H)-one Towards Some Nucleophiles." In The 18th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2014. http://dx.doi.org/10.3390/ecsoc-18-a046.

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Striebich, R. C., L. Q. Maurice, and T. Edwards. "Formation of Cyclic Compounds in Cracking Reactions for Hydrocarbon-Fueled High Speed Vehicles." In ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-136.

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An endothermic fuel pyrolytic reactor may favor the formation of benzene and polynuclear aromatic hydrocarbon (PAH) soot precursors which degrade fuel system performance. Both experimental and computational studies are in progress which verify the formation of multi-ring aromatic compounds in endothermic thermal cracking processes. Classic gas phase pyrolytic soot mechanisms may be effective for the prediction of soot precursor concentrations. Hence, a need exists to examine thermal molecular growth processes in a versatile experimental apparatus which can help guide modeling efforts and incre
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Barari, Ghazal, Batikan Koroglu, Artëm E. Masunov, and Subith Vasu. "Combustion of Aldehydes in the Negative Temperature Coefficient Region: Products and Pathways." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-58025.

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Aldehydes are major intermediates in oxidation and pyrolysis of hydrocarbons and particularly biofuels. While the high temperature oxidation chemistry of C3-C5 aldehydes have been studied in the literature, a comprehensive low temperature kinetics remains unaddressed. In this work, acetaldehyde, propanal, and 2-propenal (acrolein) oxidation was investigated at low-temperature combustion condition (500–700 K). The isomer specific products concentrations as well as the time-resolved profiles were studied using Sandia’s multiplexed photoionization mass spectroscopy (MPIMS) with synchrotron radiat
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Anand, M., M. Hadfield, JL Viesca, and B. Thomas. "Experimental Study on the Effect of Marine Engine Lubricant Degradation on Tribological Performance of Cylinder Liner and Piston Rings Contact Using a Tuning Fork Technology Based Oil Sensor." In International Conference on Marine Engineering and Technology Oman. IMarEST, 2019. http://dx.doi.org/10.24868/icmet.oman.2019.009.

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Abstract:
An investigation was carried out to study the effect of changes in oil quality on its tribological performance using a tuning fork technology based oil sensor. In this research, a tribological testing system was commissioned, to simulate the piston ring-cylinder liner sliding contact, and to measure the lubricant condition in real-time using an oil sensor. Tribological contact between cylinder liners and piston rings in marine engines is the most affected region due to excessive thermo-mechanical stresses. At top dead centre, the effect of such stresses is at a maximum where piston-sliding spe
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