Academic literature on the topic 'Regioselective synthesis'

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Journal articles on the topic "Regioselective synthesis"

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Lin, Hao-Sheng, Yutaka Matsuo, Jun-Jie Wang, and Guan-Wu Wang. "Regioselective acylation and carboxylation of [60]fulleroindoline via electrochemical synthesis." Organic Chemistry Frontiers 4, no. 4 (2017): 603–7. http://dx.doi.org/10.1039/c6qo00654j.

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A regioselective and highly efficient electrochemical method for direct acylation and carboxylation of a [60]fulleroindoline, affording 1,2,3,16-functionalized [60]fullerene derivatives, regioselectively, has been developed.
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Kamitanaka, Tohru, Koji Morimoto, Toshifumi Dohi, and Yasuyuki Kita. "Controlled-Coupling of Quinone Monoacetals by New Activation Methods: Regioselective Synthesis of Phenol-Derived Compounds." Synlett 30, no. 10 (2019): 1125–43. http://dx.doi.org/10.1055/s-0037-1611735.

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We have studied for a long time the reaction of quinone acetal type compounds, such as quinone monoacetals, quinone O,S-acetals, and iminoquinone monoacetals, and have reported the regioselective introduction of various nucleophiles. Quinone monoacetals show various types of reactivities toward nucleophiles due to their unique structures. In this study, we found that aromatic and alkene nucleophiles can be regioselectively introduced into the α-position of the carbonyl group on quinone monoacetals by specific activation of the acetal moiety. These reactions enabled the metal-free synthesis of
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Bender, Matthias, and Jens Christoffers. "Investigations into the Regioselectivity of Fischer Indole and Friedländer Quinoline Syntheses with Octahydroisobenzofuran and Octahydroisoindole Derivatives." Zeitschrift für Naturforschung B 66, no. 12 (2011): 1209–18. http://dx.doi.org/10.1515/znb-2011-1203.

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A Fischer indole synthesis with a cis-configurated octahydroisobenzofuran-6-one yielded exclusively a furo[3,4-c]carbazole derivative as the product of a regioselective angular annulation reaction. A Friedländer quinoline synthesis from the same substrate gave a mixture of angular and linear annulation products, i. e. furo[3,4-a]acridine and furo[3,4-b]acridine derivatives. When submitting a mixture of cis- and trans-octahydroisoindole derivatives to Fischer and Friedländer syntheses, the trans-starting material gave regioselectively linear annulation products, i. e. pyrrolo[3,4-b]carbazole an
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Roy, Chandra D. "Regioselective Conversion of Unsymmetrical Terminal Epoxides into Vicinal Chlorohydrins Using Dimethoxyboron Chloride." Australian Journal of Chemistry 59, no. 11 (2006): 834. http://dx.doi.org/10.1071/ch06315.

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A highly regioselective synthesis of chlorohydrins by chlorinative cleavage of unsymmetrical epoxides utilizing dimethoxyboron chloride is described. Except for styrene oxide, all the terminal epoxides were regioselectively cleaved following a predominantly SN2-type reaction pathway favouring the formation of primary chlorides. In the case of styrene oxide, a benzylic epoxide, (MeO)2BCl transfers the chlorine at the benzylic position, by following an apparent SN1-type mechanism.
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Yan, Xing-Xing, Bairu Li, Hao-Sheng Lin, et al. "Successively Regioselective Electrosynthesis and Electron Transport Property of Stable Multiply Functionalized [60]Fullerene Derivatives." Research 2020 (February 15, 2020): 1–9. http://dx.doi.org/10.34133/2020/2059190.

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With the recent advance in chemical modification of fullerenes, electrosynthesis has demonstrated increasing importance in regioselective synthesis of novel fullerene derivatives. Herein, we report successively regioselective synthesis of stable tetra- and hexafunctionalized [60]fullerene derivatives. The cycloaddition reaction of the electrochemically generated dianions from [60]fulleroindolines with phthaloyl chloride regioselectively affords 1,2,4,17-functionalized [60]fullerene derivatives with two attached ketone groups and a unique addition pattern, where the heterocycle is rearranged to
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Ishigeev, R. S., S. V. Amosova, and V. A. Potapov. "Reactions of Pyrimidine-2-sulfenyl Chloride with Alkylvinyl and Allyl Ethers." Žurnal obŝej himii 94, no. 7 (2024): 836–42. https://doi.org/10.31857/s0044460x24070058.

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The regioselective synthesis of novel thiazolo[3,2-a]pyrimidine derivatives in 52–92% yields was developed based on the reaction of pyrimidine-2-sulfenyl chloride with unsaturated ethers. The reaction with allylic and vinylic ethers proceed regioselectively, but with the opposite regiochemistry. The reaction with allylic ethers lead to 2-substituted thiazolo[3,2-a]pyrimidine derivatives whereas 3-organyloxy derivatives are formed in the reaction with vinylic ethers.
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Sharma, Upendra, Inder Kumar, and Rakesh Kumar. "Recent Advances in the Regioselective Synthesis of Indoles via C–H Activation/Functionalization." Synthesis 50, no. 14 (2018): 2655–77. http://dx.doi.org/10.1055/s-0037-1609733.

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Indole is an important heterocyclic motif that occurs ubiquitously in bioactive natural products and pharmaceuticals. Immense efforts have been devoted to the synthesis of indoles starting from the Fisher indole synthesis to the recently developed C–H activation/functionalization-based methods. Herein, we have reviewed the progress made on the regioselective synthesis of functionalized indoles, including 2-substituted, 3-substituted and 2,3-disusbstituted indoles, since the year 2010.1 Introduction2 Metal-Catalyzed Synthesis of 2-Substituted Indoles3 Metal-Catalyzed Synthesis of 3-Substituted
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S., B. Mahato. "Advances in the chemistry of Friedel-Crafts acylation." Journal of Indian Chemical Society Vol. 77, Apr 2000 (2000): 175–91. https://doi.org/10.5281/zenodo.5862471.

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Indian Institute of Chemical Biology, 4 RajaS. C. Mullick Road, Jadavpur, Calcutta-700 032, India <em>Manuscript received 2 July 1999, accepted 20 September 1999</em> The scope and application of Friedel-Crafts reactions have proliferated tremendously. The advances in Friedel-Crafts acylation reactions in areas such as regioselective synthesis, new synthetic methods, cycloacylation, synthesis of secondary products of acylation of arenes, stereoselective and other miscellaneous syntheses are reviewed. Developments in Friedel-Crafts catalysts including Lewis and Bronsted acids, Bronsted-Lewis su
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Beil, Sebastian B., and Max von Delius. "Supramolecular Approaches for Taming the Chemo- and Regiochemistry of C60 Addition Reactions." Organic Materials 03, no. 02 (2021): 146–54. http://dx.doi.org/10.1055/s-0041-1727182.

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The chemo- and regioselective functionalization of fullerenes is a long-standing problem of organic synthesis. Over the past five years, this fundamental challenge has gained technological relevance, because studies on single bis-adduct isomers in new-generation solar cells have demonstrated that the widespread use of isomer mixtures leads to suboptimal power conversion efficiencies. Herein, we review recent work on supramolecular approaches for achieving chemo- and regioselective syntheses of multiply functionalized derivatives of C60.
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Huang, Deng-Ming, Hui-Jing Li, Jun-Hu Wang, and Yan-Chao Wu. "Asymmetric total synthesis of talienbisflavan A." Organic & Biomolecular Chemistry 16, no. 4 (2018): 585–92. http://dx.doi.org/10.1039/c7ob02837g.

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The first asymmetric total syntheses of talienbisflavan A and bis-8,8′-epicatechinylmethane as well as a facile synthesis of bis-8,8′-catechinylmethane has been accomplished from readily available starting materials by using a newly developed direct regioselective methylenation of catechin derivatives as one of the key steps.
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Dissertations / Theses on the topic "Regioselective synthesis"

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Harrington, Keith Anthony. "Regioselective synthesis of functionalised pyridines." Thesis, University of Leeds, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329948.

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Xu, Daiqiang. "Regioselective Synthesis of Cellulose Derivatives." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/38830.

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Cellulose is the most abundant polysaccharide on earth and it is relatively a simple homopolymer with three hydroxyl groups, differing only subtly in reactivity. The position of substitution has a powerful influence on physical properties of cellulose derivatives. To better understand the structure and property relationships of cellulose derivatives, it is critical to have all homopolymers related to important cellulose ethers and esters available. However, regiocontrol in cellulose chemistry is still a difficult, mostly unconquered frontier. In this dissertation, the main objective is to deve
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Zheng, Xueyan. "Regioselective Synthesis of Cellulose Esters." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/49540.

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Cellulose is an extraordinarily abundant polymer that can be harvested and purified from trees and other renewable sources. Cellulose derivatives have been widely used as coatings, optical films, fibers, molded objects, and matrices for controlled release. The properties of cellulose derivatives are not only affected by the degree of substitution, but also by the position of substitution. In order to establish the structure-property relationships of cellulose derivatives, it is of great importance to impart regioselectivity into functionalized cellulose. However, regioselective substitution of
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Zhang, Ruoran. "Regioselective synthesis of curdlan derivatives." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/64374.

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Curdlan, a (1,3)-linked linear homopolysaccharide composed of beta-D-glucan, is produced by the bacterium Alcaligenes faecalis var. myxogenes. Several strategies to synthesize chemically modified curdlan derivatives have been reported, but there have been few reports of regioselective functionalization at specific positions of the curdlan backbone, especially of aminated curdlan derivatives which have remarkable potential in biomedical and pharmaceutical applications. We demonstrate herein the design, synthesis and characterization of a family of regioselectively aminated curdlan derivatives i
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Gao, Chengzhe. "Regioselective Synthesis of Glycosaminoglycan Analogs." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/104865.

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Glycosaminoglycans (GAGs), a large family of complex, unbranched polysaccharides, display a variety of essential physiological functions. The structural complexity of GAGs greatly impedes their availability, thus making it difficult to understand the biological roles of GAGs and structure-property relationships. A method that can access GAGs and their analogs with defined structure at relatively large scales will facilitate our understandings of GAG biological roles and biosynthesis modulation. Cellulose is an abundant and renewable natural polymer. Applications of cellulose and cellulose deri
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Liu, Shu. "Regioselective Synthesis of Polysaccharide-based Polyelectrolytes." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/91194.

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Polysaccharides are one of the most abundant and diverse families of natural polymers, and have an incredibly wide range of natural functions including structural reinforcement, energy storage, aqueous rheology modification, and communication and identity. Application of native polysaccharides like cellulose as sustainable materials is limited by some inherent drawbacks such as insolubility in common solvents including water, and poor dimensional stability. To increase their functionality and utility, researchers have sought to tailor the chemical and physical properties of cellulose and other
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Haliloglu, Cansu. "Synthesis and regioselective functionalization of a trihalogenated pyridone." Thesis, Umeå universitet, Kemiska institutionen, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-105536.

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Fox, Stephen Carter. "Regioselective Synthesis of Novel Cellulose Derivatives for Drug Delivery." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/77263.

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New methods were developed for the regioselective synthesis of new classes of cellulose derivatives with properties that could help improve the delivery of pharmaceutical drugs within the human body. The specific synthetic targets of this research were regioselectively carboxylated and regioselectively aminated cellulose derivatives. While different avenues to the carboxylated cellulose were ultimately explored without success, a new method for the synthesis of selectively <i>O</i>-acylated 6-amino-6-deoxy-cellulose esters was devised. A key reaction that enabled the synthesis of the new cell
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Kim, Young-Jin. "Regioselective synthesis of functional phenolic polymers and their applications." 京都大学 (Kyoto University), 2004. http://hdl.handle.net/2433/145356.

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Hassan, Hassan Abbas. "Partial synthesis and regioselective reduction of steroidal 11,12-seco-dioic anhydrides." Thesis, University of Glasgow, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.281225.

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Books on the topic "Regioselective synthesis"

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Chiriac, Maria Irina. Regioselective Installation of the Trans-dihydrofuran Architecture for the Synthesis of Resveratrol Oligomers. [publisher not identified], 2014.

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Plug, Johannes Petrus Marinus. Synthesis of new ellipticine derivatives by regioselective functionalization. 1992.

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Bourgeois, Jean-Pascal. Regioselective synthesis of trans-1 fullerene-C₆₀ bis-adducts directed by crown ether and tetraphenyl porphyrin tethers. 2000.

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Book chapters on the topic "Regioselective synthesis"

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Odagi, Minami, and Kazuo Nagasawa. "Oxidative Phenolic Coupling Reaction/Aza-Michael Reaction Strategy for the Synthesis of Complex Polycyclic Alkaloids." In Modern Natural Product Synthesis. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-1619-7_10.

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AbstractThe synthesis of alkaloids featuring fused polycyclic frameworks has long attracted the interest of synthetic organic communities, owing to their great structural complexity and wide variety of biological activities. Indeed, a variety of strategies for synthesizing these alkaloids have been investigated over the years. Here, we present our innovative strategy for tahe construction of complex fused polycyclic frameworks via oxidative phenolic coupling reaction and subsequent regioselective intramolecular aza-Michael reaction. We illustrate its practical application in synthetic studies
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Tsukano, Chihiro, Motohiro Yasui, and Yoshiji Takemoto. "Total Synthesis of Avenaol." In Modern Natural Product Synthesis. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-1619-7_18.

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AbstractAvenaol is a terpene with a unique all-cis cyclopropane in which all bulky substituents are oriented in the same direction. It is categorized into a non-canonical strigolactone. We have synthesized alkylidenecyclopropanes by Rh-catalyzed intramolecular cyclopropanation of allenes, followed by iridium-catalyzed diastereoselective double bond isomerization to construct all-cis cyclopropanes. Subsequently, distinction of the two hydroxymethyl groups of 1,3-diol by an intramolecular SN1-type reaction, followed by cleavage of the tetrahydropyranyl ring by regioselective C–H oxidation, led t
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Tan, Kui-Thong, Shu-Sin Chng, Hin-Soon Cheng, et al. "Regioselective or Asymmetric 1,2-Addition to Aldehydes." In Catalysts for Fine Chemical Synthesis, Volume 3, Metal Catalysed Carbon-Carbon Bond-Forming Reactions. John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470862017.ch8.

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Jachak, Madhukar N., Dilip R. Birari, Deepak P. Shelar, et al. "Regioselective Synthesis of Polyfluorinated Pyrazoles and Evaluation of Antimicrobial Activity." In Chemistry for Sustainable Development. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-8650-1_8.

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Kitagawa, M., T. Raku, H. Fan, and Y. Tokiwa. "Effect of DMSO on Regioselective Synthesis of Vinyl Sugars Catalyzed by Protease." In ACS Symposium Series. American Chemical Society, 2002. http://dx.doi.org/10.1021/bk-2003-0840.ch008.

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Pavlova-Naydenova, E., I. D. Dobrev, and B. V. Aleksiev. "Regioselective peptide bond synthesis by the alkaline protease from Bacillus subtilis, strain DY." In Peptides 1992. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1470-7_177.

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Echegoyen, L., M. A. Herranz, F. Diederich, and C. Thilgen. "Regioselective Synthesis of Fullerene Derivatives and Separation of Isomers of the Higher Fullerenes." In Separations and Reactions in Organic Supramolecular Chemistry. John Wiley & Sons, Ltd, 2004. http://dx.doi.org/10.1002/0470020261.ch6.

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Li, Geng, Alankar Vaidya, Wenchun Xie, Wei Gao, and Richard A. Gross. "Enzyme-Catalyzed Oligopeptide Synthesis: Rapid Regioselective Oligomerization ofL-Glutamic Acid Diethyl Ester Catalyzed by Papain." In ACS Symposium Series. American Chemical Society, 2008. http://dx.doi.org/10.1021/bk-2008-0999.ch020.

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Schedel, Michael. "Regioselective Oxidation of Aminosorbitol with Gluconobacter oxydans , Key Reaction in the Industrial 1-Deoxynojirimycin Synthesis." In Biotechnology. Wiley-VCH Verlag GmbH, 2008. http://dx.doi.org/10.1002/9783527620913.ch7.

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Go, Su Yong. "Highly Regioselective and E/Z‑Selective Hydroalkylation of Alkyne via Photoredox-Mediated Ni/Ir Dual Catalysis." In Photochemical and Electrochemical Activation Strategies of C(sp3)-Based Building Blocks for Organic Synthesis. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8994-2_2.

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Conference papers on the topic "Regioselective synthesis"

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arya, Kapil. "Expedite regioselective synthesis of pyrimidobenzimidazoles." In The 11th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2007. http://dx.doi.org/10.3390/ecsoc-11-01350.

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Custódio, Cíntia de Andrade, and Simon J. Garden. "Regioselective reduction of 1-amino-2,4-dinitrobenzenes." In 15th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-15bmos-bmos2013_2013819201721.

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Carvalho, Pedro H. P. R., Alexandre F. Gomes, Luciana M. Ramos, Fábio C. Gozzo, Eufrânio N. da Silva Júnior, and Brenno A. D. Neto. "ESI-IMS-QTOF: a regioselective Michael addition study." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0224-2.

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Martinez, Pablo David G., and Carlos Roque D. Correia. "Highly regioselective epoxide hydrogenolysis aiming at the bulgecinine synthesis." In 15th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-15bmos-bmos2013_2013819125138.

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Amaral, Mônica F. Z. J., Amanda A. Baumgartner, and Giuliano C. Clososki. "Base/Electrophile-Controlled Regioselective Functionalization of 1-Substituted-Indolizines." In 15th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-15bmos-bmos2013_2013912181622.

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Voinkov, E. K., R. A. Drokin, E. N. Ulomsky, and V. L. Rusinov. "Regioselective synthesis of azolo[5,1-c][1,2,4]triazines." In ACTUAL PROBLEMS OF ORGANIC CHEMISTRY AND BIOTECHNOLOGY (OCBT2020): Proceedings of the International Scientific Conference. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0069759.

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

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Zanatta, Nilo, Marcio M. Lobo, Bruna Canova, Helio G. Bonacorso, and Marcos A. P. Martins. "Regioselective synthesis of 1,3- and 1,5-substituted pyrazoles and pyrazolynes analogous of Celecoxib." In 15th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-15bmos-bmos2013_20138818469.

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Díaz Álvarez, Jesús, Carlos Marcos, and Ana Bornadiego. "Regioselective synthesis of Dihydroxanthones and Xanthones through a Tandem process." In The 20th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2016. http://dx.doi.org/10.3390/ecsoc-20-b021.

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Pittaluga, Everton P., Helio G. Bonacorso (PQ)*, Michele S. Correa, et al. "New one-pot and regioselective method for the synthesis of 3-trifluoromethyl-1H-1-phenylpyrazoles." In 15th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-15bmos-bmos2013_2013925215748.

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