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Relevant bibliographies by topics / Thiophenes. Organic cyclic compounds

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Academic literature on the topic 'Thiophenes. Organic cyclic compounds'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Thiophenes. Organic cyclic compounds"

1

Adib, Mehdi, Saideh Rajai-Daryasarei, Rahim Pashazadeh, Mehdi Jahani, and Massoud Amanlou. "Reaction between Chalcones, 1,3-Dicarbonyl Compounds, and Elemental Sulfur: A One-Pot Three-Component Synthesis of Substituted Thiophenes." Synlett 29, no. 12 (2018): 1583–88. http://dx.doi.org/10.1055/s-0037-1610147.

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A simple and atom-economic synthesis of highly substituted thiophenes is demonstrated. Heating a solution of a chalcone and a linear/cyclic 1,3-dicarbonyl compound with elemental sulfur in CH3CN in the presence of NEt3 at 80 °C afforded the corresponding substituted thiophenes in good to excellent yields.

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2

Wei, Ying, Xiangping Zheng, Dongqing Lin та ін. "Superelectrophilic-Initiated C–H Functionalization at the β-Position of Thiophenes: A One-Pot Synthesis of trans-Stereospecific Saddle-Shaped Cyclic Compounds". Journal of Organic Chemistry 84, № 17 (2019): 10701–9. http://dx.doi.org/10.1021/acs.joc.9b01233.

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3

Satoh, Tetsuya, Yasuhito Inai, and Yoshinosuke Usuki. "Synthesis of Benzo-Fused Cyclic Compounds via Rhodium-Catalyzed Decarboxylative Coupling of Aromatic Carboxylic Acids with Alkynes." Synthesis 53, no. 17 (2021): 3029–36. http://dx.doi.org/10.1055/a-1416-6997.

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AbstractThe decarboxylative coupling of diversely substituted benzoic acids with internal alkynes proceeds smoothly in the presence of a [RhCl(cod)]2/1,2,3,4-tetraphenyl-1,3-cyclopentadiene catalyst system to selectively produce highly substituted naphthalene derivatives. The catalyst system is applicable to constructing anthracene and benzo[c]thiophene frameworks through reactions of naphthoic and thiophene-2-carboxylic acids, respectively.

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4

Muraoka, Hiroki, and Satoshi Ogawa. "Synthesis and electrochemical properties of ferrocene dimers and trimers bridged by an oligothiophene spacer." Pure and Applied Chemistry 85, no. 4 (2012): 777–84. http://dx.doi.org/10.1351/pac-con-12-06-14.

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We describe the design and synthesis of ferrocene dimers and trimers bridged by an oligothiophene spacer as both cathodic and anodic multiple redox-active organic–organometallic hybrid molecules. The electrochemical properties of all compounds were examined by cyclic voltammetry (CV). The voltammograms showed different multi-step, multi-electron redox reactions derived from multi-ferrocene fragments and the organic spacer. The results indicate that a number of thiophene rings in the spacer can be attuned to the redox potentials and the electron-transfer processes.

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5

Taylor, Rupert G. D., Joseph Cameron, Iain A. Wright, et al. "Thiazole-induced rigidification in substituted dithieno-tetrathiafulvalene: the effect of planarisation on charge transport properties." Beilstein Journal of Organic Chemistry 11 (July 10, 2015): 1148–54. http://dx.doi.org/10.3762/bjoc.11.129.

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Two novel tetrathiafulvalene (TTF) containing compounds 1 and 2 have been synthesised via a four-fold Stille coupling between a tetrabromo-dithienoTTF 5 and stannylated thiophene 6 or thiazole 4. The optical and electrochemical properties of compounds 1 and 2 have been measured by UV–vis spectroscopy and cyclic voltammetry and the results compared with density functional theory (DFT) calculations to confirm the observed properties. Organic field effect transistor (OFET) devices fabricated from 1 and 2 demonstrated that the substitution of thiophene units for thiazoles was found to increase the

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6

Belhousse, S., K. Lasmi, I. Mezaache, et al. "Electrochemical Sensor for Detection of Para-Nitrophenol Based on Modified Porous Silicon." Key Engineering Materials 605 (April 2014): 115–18. http://dx.doi.org/10.4028/www.scientific.net/kem.605.115.

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The behavior of a modified porous silicon surface (PSi) with polythiophene (PTh) for para-nitrophenol (p-NPh) detection by cyclic voltammetry was studied. Nitrophenols are organic compounds which are the most used in the production of pesticides but also in the dyes and pharmaceuticals. In particular, p-NPh is a toxic derivative of the parathion insecticide and is considered as major toxic polluant because it is soluble and stable in water so it can affect soil. Porous silicon was prepared by electrochemical etching and it was modified by an oxide layer. PTh films were grown on this surface us

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7

Padwa, Albert, William S. Kissell, and Cheryl K. Eidell. "Cyclizationcycloaddition cascades for the construction of azapolycyclic ring systems." Canadian Journal of Chemistry 79, no. 11 (2001): 1681–93. http://dx.doi.org/10.1139/v01-154.

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Cyclic 2-amidofuranones were obtained from the Rh(II)-catalyzed reaction of alpha-diazoketo substituted pyrrolidine derivatives. These compounds are derived by a [1,4]-hydrogen transfer from an initially formed carbonyl ylide dipole. Acylation of the amido-substituted furanone with pivalyl chloride provided a fused amidofuran, which underwent bimolecular Diels-Alder cycloaddition with N-phenylmaleimide. The Rh(II)-catalyzed decomposition of ethyl 2-diazo-3-oxo-(2-oxo-1-pent-4-enoyl-pyrrolidine-3-yl)propionate was also examined. In this case, the alkenyl group tethered to the amido carbonyl und

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8

Myles, Daniel J. T., M’hamed Chahma, and Robin G. Hicks. "Synthesis and properties of end-capped bis(oligothienyl) sulfides." Canadian Journal of Chemistry 86, no. 10 (2008): 982–91. http://dx.doi.org/10.1139/v08-128.

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The synthesis, and the optical and electrochemical properties, of a series of mesitylthio (MesS-) end-capped bis(oligothienyl) sulfides are presented. The target compounds were synthesized principally by convergent protocols, whereby a series of short thiophene oligomers bearing one terminal mesitylthio (MesS-) substituent were first assembled by metal-catalyzed cross-coupling reactions and then coupled via divalent sulfur through reactions with bis(phenylsulfonyl) sulfide. The spectroscopic and electrochemical features of the bis(oligothienyl) sulfides are qualitatively similar to those of th

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9

Duc, Dau Xuan. "Recent Progress in the Synthesis of Benzo[b]thiophene." Current Organic Chemistry 24, no. 19 (2020): 2256–71. http://dx.doi.org/10.2174/1385272824999200820151545.

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: Benzo[b]thiophenes are aromatic heterocyclic compounds containing benzene and thiophene rings. This class of heterocycles is present in a large number of natural and non-natural compounds. Benzo[b]thiophene derivatives have a broad range of applications in medicinal chemistry such as antimicrobial, anticancer, antioxidant, anti-HIV and antiinflammatory activities. The use of benzo[b]thiophene derivatives in other fields has also been reported. Various benzo[b]thiophenes compounds have been employed as organic photoelectric materials, while several benzo[b]thiophenes have been used as organic

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10

Abdel-Rahman, Adel A. H., Amira K. F. Shaban, Ibrahim F. Nassar, et al. "Discovery of New Pyrazolopyridine, Furopyridine, and Pyridine Derivatives as CDK2 Inhibitors: Design, Synthesis, Docking Studies, and Anti-Proliferative Activity." Molecules 26, no. 13 (2021): 3923. http://dx.doi.org/10.3390/molecules26133923.

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New pyridine, pyrazoloyridine, and furopyridine derivatives substituted with naphthyl and thienyl moieties were designed and synthesized starting from 6-(naphthalen-2-yl)-2-oxo-4-(thiophen-2-yl)-1,2-dihydropyridine-3-carbonitrile (1). The chloro, methoxy, cholroacetoxy, imidazolyl, azide, and arylamino derivatives were prepared to obtain the pyridine-‑C2 functionalized derivatives. The derived pyrazolpyridine-N-glycosides were synthesized via heterocyclization of the C2-thioxopyridine derivative followed by glycosylation using glucose and galactose. The furopyridine derivative 14 and the tricy

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Dissertations / Theses on the topic "Thiophenes. Organic cyclic compounds"

1

Haughan, Alan F. "Novel synthetic methods for preparation of cyclic compounds." Thesis, University of Bristol, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333955.

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Dixon, John Mark. "The conformational analysis of cyclic compounds by NMR spectroscopy." Thesis, University of Nottingham, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293631.

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Khedhair, K. A. "The conformational analysis of cyclic compounds by spectroscopic methods." Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353919.

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Haq, Ahsanul. "The preparation of macrocyclic compounds by thermolysis of cyclic peroxides." Thesis, Heriot-Watt University, 1992. http://hdl.handle.net/10399/1491.

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Shirtcliff, Laura Donnell. "'Coarctate' cyclizations : applications to heterocycle synthesis /." view abstract or download file of text, 2006. http://proquest.umi.com/pqdweb?did=1188876631&sid=1&Fmt=2&clientId=11238&RQT=309&VName=PQD.

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Thesis (Ph. D.)--University of Oregon, 2006.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 336-357). Also available for download via the World Wide Web; free to University of Oregon users.

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6

Contla, Hector Luna. "Cis-arenediols as versatile chiral synthons in the synthesis of prostaglandins, cyclitols, carbohydrates, and alkaloids /." This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-07282008-134713/.

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Lo, Kai-yip, and 羅啟業. "Synthesis of aza-bicyclic compounds via palladium-catalyzed cascade cyclization reactions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47849691.

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A palladium-catalyzed oxidative cascade cyclization reaction has been developed to prepare pyrrolizidine and indolizidine derivatives from simple aliphatic alkenyl amides 2.1ak in one step in moderate to good yields, using Pd(TFA)2 as the catalyst and molecular oxygen (1 atm) as a green oxidant. This cascade cyclization can also proceed for ring-containing unsaturated amides 2.1ln to afford azatricyclic systems. Palladium(II)-catalyzed dehydrohalogenation cascade cyclization reactions have been developed to synthesize polycyclic pyrrolizidine derivatives from iodoalkenylanilides 4.1ai

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8

Khumtaveeporn, Kanjai. "Rhodium catalyzed carbonylation and related reactions of nitrogen-, sulfur- and oxygen-containing cyclic and acyclic compounds." Thesis, University of Ottawa (Canada), 1995. http://hdl.handle.net/10393/10375.

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A systematic investigation has been carried out on the rhodium(I) catalyzed carbonylation of heterocyclic and acyclic compounds containing two heteroatoms at the 1,3-positions. The regioselectivities of carbon monoxide insertion are different in cyclic and acyclic compounds. When there is a choice between C-S and C-N bonds, in acyclic compounds, carbonylation of the C-N bond is more facile and the C-S bond is more easily carbonylated in acyclic compounds. When there is a possibility of ring or side chain carbonylation, it appears that the C-X bond of the side chain is more reactive. Rhodium(I)

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9

Chu, Suk-ling. "The first synthesis and structure of diazatetrathiafulvalenes and some spectroscopic and cyclic voltammetric measurements /." [Hong Kong : University of Hong Kong], 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13544548.

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10

Sutivisedsak, Nongnuch. "Synthesis of [alpha]-hydroxy and fluoro phosphonates and cyclic ether-containing natural products." Diss., St. Louis, Mo. : University of Missouri--St. Louis, 2008. http://etd.umsl.edu/r3246.

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Books on the topic "Thiophenes. Organic cyclic compounds"

1

Metwally, M. A. Cyclic beta-keto esters: Synthesis and reactions. Nova Science Publishers, 2009.

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Iriepa, Isabel. Structural analysis of cyclic systems, 2005. Research Signpost, 2005.

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3

The chemistry of conjugated cyclic compounds: To be or not to be like benzene? Wiley, 1989.

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4

Gėrbėlėu, Nikolaĭ Vasilʹevich. Templatnyĭ sintez makrot͡s︡iklicheskikh soedineniĭ. "Shtiint͡s︡a", 1990.

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5

Pietrzykowski, Antoni. Niektóre cyklometalowane związki kobaltu, niklu i palladu oraz amidynowe kompleksy żelaza i miedzi: Synteza, struktura i reakcje. Wydawnictwa Politechniki Warszawskiej, 1991.

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6

Advances in heterocyclic chemistry. Academic Press, 2009.

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Grenʹ, A. I. Khimii͡a︡ t͡s︡iklicheskikh ėfirov bornykh kislot. Nauk. dumka, 1988.

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8

Khan, Mahmud Tareq Hassan. Bioactive Heterocycles IV. Springer-Verlag Berlin Heidelberg, 2007.

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9

Berwe, Hermann. Stannathiaadamantane: Synthese, Eigenschaften und Strukturen. D. Winkler, 1986.

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Khan, Mahmud Tareq Hassan. Bioactive Heterocycles V. Springer-Verlag Berlin Heidelberg, 2007.

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Book chapters on the topic "Thiophenes. Organic cyclic compounds"

1

Cenini, Sergio, and Fabio Ragaini. "Synthesis of Other Non-Cyclic Compounds." In Catalytic Reductive Carbonylation of Organic Nitro Compounds. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-017-0986-6_4.

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Baev, Alexei K. "Types and Energies of Specific Intermolecular Interactions in Ethers and Organic Cyclic Oxides." In Specific Intermolecular Interactions of Organic Compounds. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21622-0_3.

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3

Bachi, M. D., E. Bosch, D. Denenmark, and D. Girsh. "ACYL, IMIDOYL, and Other Hetero-Substituted Free Radicals as Intermediates in the Synthesis of Cyclic Organic Compounds." In Free Radicals in Synthesis and Biology. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0897-0_11.

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4

Forster, Robert J., and Loanda R. Cumba. "Cyclic Voltammetry of Organic Compounds." In Reference Module in Chemistry, Molecular Sciences and Chemical Engineering. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-409547-2.14488-9.

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Margaretha, Paul. "Photochemistry of (S-Hetero)cyclic Unsaturated Carbonyl Compounds." In Organic Photochemistry. CRC Press, 1997. http://dx.doi.org/10.1201/b16837-3.

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6

Rice, Joseph E. "The Nomenclature of Cyclic and Polycyclic Compounds." In Organic Chemistry Concepts and Applications for Medicinal Chemistry. Elsevier, 2014. http://dx.doi.org/10.1016/b978-0-12-800739-6.00006-1.

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Bhutto, Abdul Waheed, Rashid Abro, Tauqeer Abbas, Guangren Yu, and Xiaochun Chen. "Desulphurization of Fuel Oils Using Ionic Liquids." In Petrochemical Catalyst Materials, Processes, and Emerging Technologies. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9975-5.ch010.

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Hydrodesulphurization (HDS) is a standard process for removing sulphur compounds in fuel oils in industry. HDS is effective to remove simple aliphatic sulphur compounds while less effective to remove thiophenes, dibenzothiophenes, and their derivatives because of sterically hindered adsorption on catalyst surface. Application of ionic liquids (ILs, a new class of compounds) substituting for traditional volatile organic solvents in extractive desulphurization (EDS) or oxidative desulphurization (ODS), have been being studied intensively in the latest decades, and many very promising results have been obtained, showing a good prospect as complement method to HDS. In this chapter, these fresh research results of EDS and ODS using ILs are summarized along with comprehensive discussions on diversified desulphurization factors along with some potential problems. It can be inferred that ILs are a class of potential ideal solvents to realize clean fuel oil in future although some problems come too.

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Mark, James E., Dale W. Schaefer, and Gui Lin. "Preparation, Analysis, and Degradation." In The Polysiloxanes. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780195181739.003.0004.

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Elemental silicon on which the entire technology is based is typically obtained by reduction of the mineral silica with carbon at high temperatures: . . . SiO2 + 2C → Si 2CO (2.1) . . . The silicon is then converted directly to tetrachlorosilane by the reaction . . . Si + 2Cl2 → SiCl4 (2.2) . . Tetrachlorosilane can be used to form an organosilane by the Grignard Reaction . . . SiCl4 + 2 RMgX → R2SiCl2 + 2 MgClX (2.3). . . This relatively complicatreaction has been replaced by the so-called Direct Process or Rochow Process, which starts from elemental silicon as is illustrated by the reaction . . . Si + 2 RCl → R2SiCl2 (2.4) . . . This process also yields RSiCl3 and R3SiCl, which can be removed by distillation. Compounds of formula R2SiCl2 are extremely important as intermediates to a variety of substances having both organic and inorganic character. Hydrolysis gives dihydroxy structures, which can condense to give the basic [–SiR2O–] repeat unit. The nature of the product obtained depends greatly on the reaction conditions. Basic catalysts and higher temperatures favor higher molecular weight linear polymers. Acidic catalysts tend to produce cyclic small molecules or low molecular weight polymers. The hydrolysis approach to polysiloxane synthesis has been largely replaced by ring-opening polymerization of organosilicon cyclic trimers and tetramers, with ionic initiation. These cyclic monomers are produced by the hydrolysis of dimethyldichlorosilane. Under the right conditions, at least 50 wt % of the products are cyclic oligomers. The desired cyclic species are separated from the mixture for use in ring-opening polymerizations such as those described in the following section. In addition, “click” chemistry has been developed for new synthesis techniques in general, and polymerizations in particular. These approaches have been used to prepare polysiloxane elastomers and polydimethylsiloxane (PDMS) copolymers that can function as thermoplastic elastomers. New synthetic strategies for structured silicones, based on B(C6F5)3 have also been developed. Another new approach involves enzymes, such as the lipase enzymatically catalyzed synthesis of silicone aromatic polyesters and silicone aromatic polyamides.

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Calvert, Jack, Abdelwahid Mellouki, John Orlando, Michael Pilling, and Timothy Wallington. "Rate Coefficients and Mechanisms for the Atmospheric Oxidation of the Ketones." In Mechanisms of Atmospheric Oxidation of the Oxygenates. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199767076.003.0008.

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Ketones are emitted directly to the atmosphere, and their sources were discussed in detail in chapter I. In the U.K. acetone and butanone comprise about 7% and 5%, respectively, of the total anthropogenic emissions of oxygenated compounds, and 1.6% and 1.1%, respectively, of the total anthropogenic emissions of nonmethane volatile organic compounds. Ketone emissions from solvents (both industrial and personal) are substantial; emissions from both gasoline- and diesel-fueled vehicles also contribute. Ketones are also formed extensively in the atmosphere in the oxidation of other compounds. Acetone, for example is formed in the OH-initiated oxidation of propane, iso-butane, iso-pentane, and neopentane and from a number of higher hydrocarbons. It is also formed in the oxidation of terpenes. The distribution, sources, and sinks of acetone in the atmosphere have been analyzed by Simpson et al. (1994). Methyl vinyl ketone is an important first generation product in the OH-initiated oxidation of isoprene. In this chapter, we discuss the rate coefficients and the mechanisms of oxidation of ketones. The classes covered include alkanones, hydroxyketones, diketones, unsaturated ketones, ketenes, cyclic ketones, ketones derived from biogenic compounds, and halogen-substituted ketones. Photolysis is a major atmospheric process for many ketones, and will be discussed in chapter IX. The major bimolecular reactions removing ketones from the atmosphere are with OH. Although less important than the OH reactions, reactions with Cl have been studied quite extensively. Other than for unsaturated ketones, reactions with NO3 and O3 are unimportant in tropospheric chemistry and have been studied little. The carbonyl group deactivates the α-position with respect to reaction with OH, but activates the β-position, and possibly more distant sites as well. The net result is that the overall rate coefficient of an alkanone generally exceeds that of the equivalent alkane. The temperature dependences of the rate coefficients can be quite complex, with acetone and possibly butanone showing a minimum in the rate coefficient at ∼250 K, while the higher alkanones show negative temperature dependences across the more limited temperature ranges that have been investigated. The most likely explanation of this behavior is the formation of a pre-reaction, hydrogen-bonded complex.

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Wei, James. "Predictions by Correlations." In Product Engineering. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780195159172.003.0010.

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After searching the literature and making predictions based on theory without getting sufficient satisfactory results, the next move would be to make estimates. We need the property y of substances pi from a population P that has not been investigated and reported in the literature. Fortunately, there exists a subset S of P that has been investigated, and we have the values for the property y. For instance, we may want the boiling points of all the hydrocarbons, but we have only the boiling points of the normal paraffins from 1 to 20 carbon atoms. Can we use this piece of information on normal paraffins to estimate the boiling points for the rest of the hydrocarbon population? How much effort would be involved and how accurate would the results be? The number of isomers of paraffin is very large; see table 5.1. We see that the iso-paraffins are not as well investigated as the normal paraffins. We have the boiling points of all three isomers of pentane, but not the 75 isomers of decane. It is inevitable that we have to resort to estimations. When we have obtained a good correlation for normal paraffins, we would naturally want to know if we can extend this to the branched paraffins, and onward to the population of all the saturated hydrocarbons (by including the cyclic paraffins), and onward to the population of all hydrocarbons (by including olefins, acetylenes, and aromatic compounds), and then onward to the population of all organic compounds (by including compounds with heteroatoms, such as O, N, Cl). A correlation that applies accurately to a larger domain is more useful than one that works only for a smaller domain. Another example is polychlorinated biphenyls (PCBs), which have 10 hydrogen atoms that can be substituted by chlorine atoms. There are three types of site: the four α sites near the bridge between the two phenyl fragments, the four β sites farther away from the bridge, and the two γ sites that are the farthest away from the bridge. The number of isomers is shown in table 5.2.

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Conference papers on the topic "Thiophenes. Organic cyclic compounds"

1

Shutalev, Anatoly. "A New Route for the Synthesis of Cyclic Thioureas and Related Compounds." In The 3rd International Electronic Conference on Synthetic Organic Chemistry. MDPI, 1999. http://dx.doi.org/10.3390/ecsoc-3-01751.

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Shimizu, Tsuyoshi, and Hiroshi Tani. "Behavior of Chemical Reaction Between Siloxane Compounds and Surface on Carbon Materials." In ASME 2017 Conference on Information Storage and Processing Systems collocated with the ASME 2017 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/isps2017-5424.

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Among many organic vapor contaminations released from structural components of hard disk drives, organic sioloxanes are particularly ominous, as they can be released in a relatively large quantity. Adherence of organic pollutants to the disk surface is a factor that hinders the normal operation of the head and the disk surface. It is known that volatile siloxane oligomers such as D4 (octamethyl cycletetrasiloxane) often form cyclic polydimethylsiloxane polymers in the presence of acidic catalysts. We investigated the reaction between D4 and some carbon materials such as diamond-like carbon in

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