Academic literature on the topic 'Spiro compound'

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Journal articles on the topic "Spiro compound"

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DANSHPAJUH, Marjan, and Neda HASANZADEH. "Study of influence of anomeric effect on conformational preferences using hybrid density functional theory (DFT) and natural bond orbital (NBO) interpretation." Revue Roumaine de Chimie 68, no. 1-2 (2023): 61–74. http://dx.doi.org/10.33224/rrch.2023.68.1-2.06.

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For the relationship between thermodynamic parameters, global hardness, global electronegativity, anomeric effect, structural parameters, and structural properties of dodecahedro-spiro [isochromene-3,2'-pyran] (A), dodecahedro-spiro [isothiocromene-3,2'- thiopyran) (B), dodecahedro-spiro [isochroman-3,2'-thiopyran] (C) and dodecahedro-spiro [isothiochrome-3,2'-pyran] (D) computational methods (B3LYP / 6-311 ++ G **) were used. Results show that the calculated Gibbs free energy and enthalpy differences between the axial- and equatorial- stereoisomers [i.e. ΔG = Geq – Gax, ΔH = Heq- Hax] decreas
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Tripathi, Rahul R., and Ratnamala P. Sonawane. "An Extraction of the Isatin from the Couroupita guianesis (Cannon Ball Tree) and a Novel Synthesis of the N,N'-(2-oxo-3'H-spiro[indoline-3,2'-[1,3,4]thiadiazole]-3',5'-diyl]diacetamidefrom the Isatin." International Letters of Chemistry, Physics and Astronomy 15 (September 2013): 119–25. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.15.119.

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Isatins are synthetically versatile substrates, where they can be used for the synthesis of a large variety of Isatins and heterocyclic compounds. In this, the isatin were extracted from the floral material of Couroupita guianesis commonly known as an Cannon ball tree. After that, a novel heterocyclic spiro derivative having an IUPAC name N,N’-(2-oxo-3’H-spiro[indoline-3,2’-[1,3,4] thiadiazole]-3’5’-diyl)diacetamide were synthesized , which may be used as raw material for drug synthesis. A spiro compound N,N’-(2-oxo-3’H-spiro[indoline-3,2’-[1,3,4] thiadiazole]-3’5’-diyl)diacetamide were synthe
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Tripathi, Rahul R., and Ratnamala P. Sonawane. "An Extraction of the Isatin from the <i>Couroupita guianesis</i> (Cannon Ball Tree) and a Novel Synthesis of the N,N'-(2-oxo-3'H-spiro[indoline-3,2'-[1,3,4]thiadiazole]-3',5'-diyl]diacetamidefrom the Isatin." International Letters of Chemistry, Physics and Astronomy 15 (June 29, 2013): 119–25. http://dx.doi.org/10.56431/p-h7k957.

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Isatins are synthetically versatile substrates, where they can be used for the synthesis of a large variety of Isatins and heterocyclic compounds. In this, the isatin were extracted from the floral material of Couroupita guianesis commonly known as an Cannon ball tree. After that, a novel heterocyclic spiro derivative having an IUPAC name N,N’-(2-oxo-3’H-spiro[indoline-3,2’-[1,3,4] thiadiazole]-3’5’-diyl)diacetamide were synthesized , which may be used as raw material for drug synthesis. A spiro compound N,N’-(2-oxo-3’H-spiro[indoline-3,2’-[1,3,4] thiadiazole]-3’5’-diyl)diacetamide were synthe
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Hafez, Hend N., Abdel-Rhman B. A. El-Gazzar, and Magdi E. A. Zaki. "Simple approach to thieno[3,2-d]pyrimidines as new scaffolds of antimicrobial activities." Acta Pharmaceutica 66, no. 3 (2016): 331–51. http://dx.doi.org/10.1515/acph-2016-0029.

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Abstract 6ʹ-(4-Chlorophenyl)-spiro[cyclohexane-1,2ʹ-thieno[3,2-d][1,3] oxazin]-4ʹ(1ʹH)-one (1) was synthesized and used as a starting material for the synthesis of a novel series of spiro compounds having biologically active sulfonamide 2a-e and 3ʹ-(4-acetylphenyl)-6ʹ- (4-chlorophenyl)-1ʹH-spiro[cyclohexane-1,2ʹ-thieno[3,2-d] pyrimidine-4ʹ(3ʹH)-one (3). Compound 2a was used as a key intermediate for the synthesis of sulfonyl carbothioamide derivatives 4a-c. Also, compound 3 was used as an intermediate for the synthesis of 3ʹH-spiro[cyclohexane-1,2ʹ-thieno[3,2-d]pyrimidin]-3ʹ-yl] phenyl}-2-imin
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Macháček, Vladimír, Makky M. M. Hassanien, and Vojeslav Štěrba. "Kinetics and mechanism of spiro adduct formation from and smiles rearrangement of N-methyl-N-(2,4,6-trinitrophenyl)aminoacetanilide. Base-catalyzed transformation of N-(2,4,6-trinitrophenylamino)acetanilide into 2-nitroso-4,6-dinitroaniline." Collection of Czechoslovak Chemical Communications 52, no. 9 (1987): 2225–40. http://dx.doi.org/10.1135/cccc19872225.

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The paper deals with kinetics and mechanism of the reaction of N-(2,4,6-trinitrophenyl)aminoacetanilide (IIa) with methoxide ion and with the reaction kinetics and product structure of the reaction of N-methyl-N-(2,4,6-trinitrophenyl)aminoacetanilide (IIb) in methanolic buffers. The main product of the reaction of compound IIa with methoxide is 2-nitroso-4,6-dinitroaniline along with about 3% spiro adduct. The dependence of the experimental rate constant kexp of the reaction with methoxide on the methoxide concentration is similar to that of the reaction of N-(2,4,6-trinitrophenyl)glycine meth
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KRISHNA, C. JOSHI, DANOIA ANSHU, S. SHARMA C., and JOSHI RAHUL. "Investigation of the Reaction of Fluorine containing 1,3-Dihydro-3-( 1 ,5-dihydro-3-methyl-5-oxo-1-phenyl-4Hpyrazol- 4-ylidene )-2H-indol-2-one with Hydrazine Derivatives." Journal of Indian Chemical Society Vol. 71, June-Aug 1994 (1994): 459–62. https://doi.org/10.5281/zenodo.5895738.

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<em>Department of Chemistry. University of Rajasthan, Jaipur-302 004 Manuscript received 1 December 1993</em> The reaction of 1,3-dihydro-3-(1,5-dihydro-3-methyl-5-oxo-1-phenyl-4<em>H</em>-pyrazol-4-ylldene)-2<em>H</em>-indo 1-2-ones (3a-d) with various hydrazines has&nbsp;been studied in the absolute ethanol/glacial acetic acid medium. Reaction of 3a-c with phenyl hydrazine in absolute ethanol gave exclusively spiro compounds (64-76%), while in glacial acetic acid, a mixture of spiro compound (18-&#39;7%), hydrazones (14-25%) and a condensed compound (22-33%) was formed. 3 however gave only t
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Rani, U. Usha, and A. Sreedevi. "Synthesis and Biological Evaluation of 3-(2-Benzoyl-4-chlorophenyl)-4H-spiro [indole-3,2-[1,3]thiazolidine]-2,4(1H)- dione Derivatives for Anti-tubercular and Antimicrobial Activities." Indian Journal Of Science And Technology 17, no. 20 (2024): 2101–9. http://dx.doi.org/10.17485/ijst/v17i20.1434.

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Objectives: To synthesize a new scaff fold of 3'-(2-Benzoyl-4-chlorophenyl)-4'H-spiro [indole-3,2'-[1,3] thiazolidine]-2,4'(1H)-dione derivatives and to assess the compounds for anti-tubercular and antimicrobial activities. Methods : A new series of 3'-(2-Benzoyl-4-chlorophenyl)-4'H-spiro [indole-3,2'- [1,3] thiazolidine]-2,4'(1H)-dione derivatives were prepared by synthesizing schiff’s bases followed by condensing schiff base with 2-mercaptopropanoic acid in the presence of zinc chloride. Synthesized compounds were characterized by IR, NMR and Mass spectral data. Their antimicrobial, antitube
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Nakano, Koji, Ko Takase, and Keiichi Noguchi. "Furan-Containing Chiral Spiro-Fused Polycyclic Aromatic Compounds: Synthesis and Photophysical Properties." Molecules 27, no. 16 (2022): 5103. http://dx.doi.org/10.3390/molecules27165103.

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Spiro-fused polycyclic aromatic compounds (PACs) have received growing interest as rigid chiral scaffolds. However, furan-containing spiro-fused PACs have been quite limited. Here, we design spiro[indeno[1,2-b][1]benzofuran-10,10′-indeno[1,2-b][1]benzothiophene] as a new family of spiro-fused PACs that contain a furan unit. The compound was successfully synthesized in enantiopure form and also transformed to its S,S-dioxide derivative and the pyrrole-containing analog via aromatic metamorphosis. The absorption and emission properties of the obtained furan-containing chiral spiro-fused PACs are
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Konyar, Dilan, Cenk A. Andac, and Erdem Buyukbingol. "Design, Synthesis and Cytotoxic Activity of Spiro(oxindole-3-3'- pyrrolidine) Derivatives." Letters in Drug Design & Discovery 15, no. 1 (2018): 37–45. http://dx.doi.org/10.2174/1570180814666170810120634.

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Background: Spiro[pyrrolidine-3,3'-oxindole] compounds are reported to be highly bioactive natural and synthetic products. Initially, spirooxindole alkaloids were isolated from plants of the Apocynaceae and Rubiaceae families, which were found to have a common scaffold, spiro[pyrrolidine-3,3'-oxindole], exhibiting anticancer activities., we specifically aimed at the synthesis, characterization and anticancer activity of novel spiro[pyrrolidine-3,3' -oxindole] derivatives, compounds 6a-c and 7. Methods: The synthesis was initiated by Knovenegal condensation of indole-2-one with an appropriate b
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U, Usha Rani, and Sreedevi A. "Synthesis and Biological Evaluation of 3-(2-Benzoyl-4-chlorophenyl)-4H-spiro [indole-3,2-[1,3]thiazolidine]-2,4(1H)- dione Derivatives for Anti-tubercular and Antimicrobial Activities." Indian Journal of Science and Technology 17, no. 20 (2024): 2101–9. https://doi.org/10.17485/IJST/v17i20.1434.

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Abstract <strong>Objectives:</strong>&nbsp;To synthesize a new scaff fold of 3'-(2-Benzoyl-4-chlorophenyl)-4'H-spiro [indole-3,2'-[1,3] thiazolidine]-2,4'(1H)-dione derivatives and to assess the compounds for anti-tubercular and antimicrobial activities.&nbsp;<strong>Methods :</strong>&nbsp;A new series of 3'-(2-Benzoyl-4-chlorophenyl)-4'H-spiro [indole-3,2'- [1,3] thiazolidine]-2,4'(1H)-dione derivatives were prepared by synthesizing schiff&rsquo;s bases followed by condensing schiff base with 2-mercaptopropanoic acid in the presence of zinc chloride. Synthesized compounds were characterized
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Dissertations / Theses on the topic "Spiro compound"

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Brouillac, Clément. "Systèmes π-conjugués donneur-accepteur : composés spiro et nano anneaux pour des diodes organiques électrophosphorescentes". Electronic Thesis or Diss., Université de Rennes (2023-....), 2023. http://www.theses.fr/2023URENS097.

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L’électronique organique (EO) s’articule autour de l’utilisation des semi-conducteurs organiques (SCOs). Les diodes organiques électroluminescentes (OLEDs) font partie des technologies électroniques les plus matures et sont déjà présentes dans nos smartphones, ordinateurs et téléviseurs. Durant cette thèse, nous nous sommes particulièrement intéressés à l’élaboration de matrices hôtes pour la seconde génération d’OLEDs : les diodes organiques électrophosphorescentes (PhOLEDs). Deux design moléculaires différents ont été conçus avec deux objectifs différents. Le premier objectif consiste à déve
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Kowada, Toshiyuki. "Studies on Synthesis and Properties of Heteroarene-Containing π-Conjugated Compounds Having Spirofluorene Moieties". 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/120879.

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Mohammed, Shahid. "Manganese (3) acetate oxidative free radical cyclisations : the synthesis of novel functionalised spiro and fused acetal compounds." Thesis, University of Southampton, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317645.

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Dalinot, Clément. "Synthèse de composés spiro pour l'électronique plastique : relations structure-propriétés." Thesis, Angers, 2016. http://www.theses.fr/2016ANGE0070.

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De par leur versatilité synthétique, les matériaux moléculaires pour l’électronique ou la photonique organique peuvent être conçus sur mesure afin d'intégrer, de façon optimale, divers types de dispositifs. Dans ce contexte, ces travaux de thèse se sont consacrés à l'élaboration et l'étude de composés spiro pour des applications en électronique organique. Ainsi, après un premier chapitre introductif présentant un état de l’art focalisé sur l'utilisation des composés spiro au sein de dispositifs électroniques, les deux autres chapitres seront consacrés à l'élaboration et la mise en oeuvre de no
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CRISTOFARO, Dario. "Simultaneous recovery of cellulose and other value-added compounds from orange waste & Synthesis of spiro and ureidic compounds for modulation studies of mptp protein." Doctoral thesis, Università degli studi di Ferrara, 2017. http://hdl.handle.net/11392/2487943.

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This thesis is divided in two separate sections, both conducted in the Department of Chemical and Pharmaceutical Sciences under the supervision of Prof. Dr. Simonetta Benetti and Prof. Dr. Claudio Trapella. The first project aimed to demonstrate the opportunity of utilizing a new type of citrus waste, called decanter centrifuge orange waste (DCOW), to extract cellulose and other constituents of the matrix. These could be sold as either mixture or isolated compounds (or derivatives) thus avoiding environmental dangerous waste disposal. A sequence of extraction steps and pH-dependant treatments
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Schäfer, Christian. "Reactivity of acetylenic ω-keto-esters towards transition metal complexes : synthesis of polycyclic motives of natural products". Thesis, Strasbourg, 2013. http://www.theses.fr/2013STRAF006/document.

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Les travaux décrits dans ce mémoire ont pour objet l’étude de la réactivité des ω-céto-esters acétyléniques vis-à-vis des métaux de transition. Lorsque ces composés sont traités avec une mélange Ti(OiPr)4/iPrMgBr, la formation d’alcools allyliques bicycliques est observée avec une totale diastéréosélectivité par rapport à la jonction de cycle (cis) et une configuration (E) pour la double liaison. Il a été montré que ces produits peuvent être transformés en lactone α,β-insaturé, sous-structures de produits naturels. La cycloisomérisation d’alcynyl cétones catalysées par des sels d’Ag(I) conduit
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Garcia, Fábio Dutra. "Novos Espirocromenil-Trifluoretanonas a partir de Reações de Trifluoracetilação de Adutos de Kabbe e seus Espiro[diidrocromeno-cicloalcan]pirazóis e Isoxazóis Derivados." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/10564.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This work describes firstly an efficient and regioselective method for the synthesis of a new series of 2,2,2-trifluoro-1-[4-methoxy-spiro(2H-chromen-2,1 -cycloalkan)-3-yl]ethanones from the Kabbe adducts (spiro[chroman-2,1 -cycloalkan]-4-ones). Yields of 38 % to 61 % were obtained when trifluoroacetylation reactions of mixtures of enolethers and/or acetals derived from four spiro ketones (Kabbe adducts) were performed at a temperature of 45 oC and employing anhydrous chloroform as the solvent. Subsequently, when the respective tri
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Kern, Nicolas. "Réactivité d'azacycles en catalyse à l'or." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAF012/document.

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La catalyse organométallique est l'un des piliers de la synthèse chimique moderne. Elle permet notamment la formation rapide de liaisons carbone-carbone et carbone-hétéroatome, processus les plus importants pour la fabrication des milliers de composés nécessaires à la vie contemporaine. Elle répond également aux critères d'économie d'atomes et d'énergie, et de réduction des déchets, des risques et des coûts de mise en oeuvre d'une réaction chimique.Parmi les thématiques les plus récentes de la synthèse organique, la catalyse homogène à l'or s'est imposée en seulement quelques années comme un o
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PITZANTI, PATRIZIA. "Sintesi di molecole organiche enantiomericamente arricchite con l'uso della catalisi organica." Doctoral thesis, Università degli Studi di Cagliari, 2014. http://hdl.handle.net/11584/266431.

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The main topic of this thesis is the use of organocatalysis to synthesize organic compounds enantiomerically enriched. The first matter is about the synthesis of α-amino thioester derivatives through a tandem condensation-intramolecular rearrangement-protonation, this is a conceptually novel chiral Brønsted base/ Brønsted acid catalytic method that provides a number of important synthetic building blocks in good yields and with moderate and good enantioselectivities. The second topic is concerned to the synthesis of aldols derivatives of pyridine carbaldehydes functionalized in different pos
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Li, Qingyi. "Exploring a Symmetry Based Logic for Palau' Amine Synthesis." 2008. http://www4.utsouthwestern.edu/library/ETD/etdDetails.cfm?etdID=370.

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Books on the topic "Spiro compound"

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Torres, Ramon Rios, ed. Spiro Compounds. Wiley, 2022. http://dx.doi.org/10.1002/9781119567646.

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Torres, Ramon Rios. Spiro Compounds: Synthesis and Applications. Wiley & Sons, Limited, John, 2022.

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Torres, Ramon Rios. Spiro Compounds: Synthesis and Applications. Wiley & Sons, Incorporated, John, 2022.

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Torres, Ramon Rios. Spiro Compounds: Synthesis and Applications. Wiley & Sons, Incorporated, John, 2022.

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Torres, Ramon Rios. Spiro Compounds: Synthesis and Applications. Wiley & Sons, Incorporated, John, 2022.

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Deshayes, Kurt D. Studies of spiro[pyranindoline] compounds and their application to photodynamic transport. 1988.

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Book chapters on the topic "Spiro compound"

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Beckwith, A. L. J. "4.5.2.1 Radicals from fused rings and spiro compounds." In Inorganic Radicals, Metal Complexes and Nonconjugated Carbon Centered Radicals. Part 1. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-48466-0_108.

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Pudzich, R., T. Fuhrmann-Lieker, and J. Salbeck. "Spiro Compounds for Organic Electroluminescence and Related Applications." In Emissive Materials Nanomaterials. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/12_074.

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Coudret, C., A. V. Chernyshev, A. V. Metelitsa, and J. C. Micheau. "New Trends in Spiro-compounds Photochromic Metals Sensors: Quantitative Aspects." In Photon-Working Switches. Springer Japan, 2017. http://dx.doi.org/10.1007/978-4-431-56544-4_1.

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Singh, Aakash, and Ruby Singh. "Synthesis and Biological Evaluation of Some Sulfur-Containing Spiro Compounds." In S-Heterocycles. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4308-7_9.

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Li, Yang, Yajie Fu, Weishuang Zhao, Xiyang Li, and Xia Peng. "Blocking Ion Migration with Spiro Compounds for Stable Perovskite Solar Cells." In Springer Proceedings in Physics. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-3530-3_19.

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Okada, Masahiko. "Ring-opening polymerization of bicyclic and spiro compounds. Reactivities and polymerization mechanisms." In Polymer Synthesis Oxidation Processes. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/3-540-55090-9_1.

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Itoh, T. "Of a Spiro Compound." In Monocyclic Arenes, Quasiarenes, and Annulenes. Georg Thieme Verlag KG, 2010. http://dx.doi.org/10.1055/sos-sd-045-00644.

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Ninomiya, I., and T. Naito. "Spiro Compounds." In Photochemical Synthesis. Elsevier, 1989. http://dx.doi.org/10.1016/b978-0-12-519490-7.50015-3.

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Itoh, T. "Of Spiro Compounds." In Monocyclic Arenes, Quasiarenes, and Annulenes. Georg Thieme Verlag KG, 2010. http://dx.doi.org/10.1055/sos-sd-045-00655.

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Elk, Seymour B. "Spiro and related compounds." In A New Unifying Biparametric Nomenclature that Spans all of Chemistry. Elsevier, 2005. http://dx.doi.org/10.1016/b978-044451685-5/50006-8.

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Conference papers on the topic "Spiro compound"

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Cahyana, A. H., L. Alfiandri, and B. Ardiansah. "Synthesis of new spiro-naphthoquinone prepared from lawsone compound and test of antioxidant activity." In PROCEEDINGS OF THE 5TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0007882.

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Ichihashi, Kana, Masaki Okamura, Takuya Kanetomo, and Takayuki Ishida. "Synthetic investigation for spiro-junctioned biradical compounds." In THE IRAGO CONFERENCE 2018: A 360-degree Outlook on Critical Scientific and Technological Challenges for a Sustainable Society. Author(s), 2019. http://dx.doi.org/10.1063/1.5089444.

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Tamai, Naoto, and Hiroshi Masuhara. "Femtosecond Dynamics of C-O Bond Cleavage of a Spirooxazine Photochromic Reaction." In International Conference on Ultrafast Phenomena. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/up.1992.tuc19.

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Spirooxazines are known as typical organic compounds exhibiting photochromism [1]. Upon ultraviolet irradiation, the bond between the spiro carbon and oxygen undergoes fission, facilitating the structural change to form merocyanine as illustrated in scheme I.
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Spreitzer, Hubert, Horst Vestweber, Philipp Stoessel, and Heinrich Becker. "White and blue temperature stable and efficient OLEDs using amorphous spiro transport and spiro emitting compounds." In International Symposium on Optical Science and Technology, edited by Zakya H. Kafafi. SPIE, 2001. http://dx.doi.org/10.1117/12.416885.

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Choi, W. H., and S. K. So. "Charge injection and transport in spiro-linked arylamine compounds." In SPIE Photonic Devices + Applications, edited by Franky So and Chihaya Adachi. SPIE, 2009. http://dx.doi.org/10.1117/12.825555.

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Spreitzer, Hubert, Hermann W. Schenk, Josef Salbeck, Frank Weissoertel, Heike Reil, and Walter Riess. "Temperature stability of OLEDs using amorphous compounds with spiro-bifluorene core." In SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, edited by Zakya H. Kafafi. SPIE, 1999. http://dx.doi.org/10.1117/12.372726.

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