Relevant bibliographies by topics / One-pot procedure

Contents

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

Academic literature on the topic 'One-pot procedure'

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

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Journal articles on the topic "One-pot procedure"

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Scheffler, Ulf, and Rainer Mahrwald. "A One-Pot Cross-Pinacol Coupling/Rearrangement Procedure." Helvetica Chimica Acta 95, no. 10 (October 2012): 1970–75. http://dx.doi.org/10.1002/hlca.201200402.

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Bum Jang, Won, Won Suk Shin, Kilsung Lee, and Dong Young Oh. "Synthesis of β-Amino Phosphonates in One-Pot Procedure." Synthetic Communications 27, no. 23 (December 1997): 4101–5. http://dx.doi.org/10.1080/00397919708005457.

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Takahashi, Tamotsu, Baojian Shen, Kiyohiko Nakajima, and Zhenfeng Xi. "A Convenient One-Pot Procedure to Arylcyclobutenes from Arylacetylenes." Journal of Organic Chemistry 64, no. 23 (November 1999): 8706–8. http://dx.doi.org/10.1021/jo990596c.

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Severin, René, Jessica Reimer, and Sven Doye. "One-Pot Procedure for the Synthesis of Unsymmetrical Diarylalkynes." Journal of Organic Chemistry 75, no. 10 (May 21, 2010): 3518–21. http://dx.doi.org/10.1021/jo100460v.

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Cardinale, Jens, and Johannes Ermert. "Simplified synthesis of aryliodonium ylides by a one-pot procedure." Tetrahedron Letters 54, no. 16 (April 2013): 2067–69. http://dx.doi.org/10.1016/j.tetlet.2013.02.018.

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Jing, Xiaobi, Xin Pan, Zhen Li, Yaocheng Shi, and Chaoguo Yan. "Novel One-Pot Procedure for the Synthesis of 1,2-Diketones." Synthetic Communications 39, no. 3 (January 13, 2009): 492–96. http://dx.doi.org/10.1080/00397910802398264.

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Osuka, Atsuhiro, Ben-li Liu, and Kazuhiro Maruyama. "An Efficient One-Pot Synthetic Procedure of Multiple Porphyrin-Cyclization." Chemistry Letters 22, no. 6 (June 1993): 949–52. http://dx.doi.org/10.1246/cl.1993.949.

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Antane, Schuyler, Ronald Bernotas, Yanfang Li, Robert McDevitt, and Yinfa Yan. "Chloromethyl Sulfones from Sulfonyl Chlorides via a One‐Pot Procedure." Synthetic Communications 34, no. 13 (January 1, 2004): 2443–49. http://dx.doi.org/10.1081/scc-120039498.

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Wu, Jishan, Chunyan Chi, Xianhong Wang, Ji Li, Xiaojiang Zhao, and Fosong Wang. "A One-Pot Procedure to Prepare S-Protected 4-Iodothiophenols." Synthetic Communications 30, no. 23 (December 2000): 4293–98. http://dx.doi.org/10.1080/00397910008087051.

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Meyer-Wegner, Frank, Stefan Scholz, Inge Sänger, Frauke Schödel, Michael Bolte, Matthias Wagner, and Hans-Wolfram Lerner. "Synthesis of Wiberg’s Tetrasilatetrahedrane (tBu3Si)4Si4by a One-Pot Procedure." Organometallics 28, no. 23 (December 14, 2009): 6835–37. http://dx.doi.org/10.1021/om900763y.

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Dissertations / Theses on the topic "One-pot procedure"

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Bonucci, Jacopo. "Nuove procedure sintetiche sostenibili per la preparazione di strutture poliuretaniche." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9307/.

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Questo lavoro di tesi si inserisce in un contesto di ricerca molto attuale, il quale, studia nuove procedure sintetiche sostenibili per la preparazione di strutture poliuretaniche. Partendo dall’etilene carbonato e dall’esametilendiammina, due molecole che possono essere ricavate da fonti rinnovabili, sono state ottimizzate la sintesi e la purificazione di un carbammato: bis(2-idrossietil)-esan-1,6-diildicarbammato (BHEDC), senza l’impiego di solventi ed in condizioni blande. Il BHEDC è conosciuto in letteratura, ma è poco studiato e non viene attualmente utilizzato come monomero. In questo lavoro il bis(2-idrossietil)-esan-1,6-diildicarbammato è stato polimerizzato in massa con diverse percentuali di bis(2-idrossietil)-tereftalato (BHET), il quale non è ricavabile da fonti naturali ma è ottenibile dal riciclo chimico del Poli-Etilene Tereftalato (PET). Sono state successivamente analizzate la struttura chimica e le proprietà termiche nonché spettroscopiche dei nuovi composti poliuretanici, così da poterne definire le correlazioni tra la struttura e le prestazioni finali. Infine, è stata messa a punto una procedura di tipo one-pot per la preparazione dei poliuretani sopra citati; questa prevede la sintesi diretta dei polimeri senza la necessità dello stadio di purificazione del bis(2-idrossietil)-esan-1,6-diildicarbammato.
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Sahloul, Kamar. "Vers l’étude de la spécificité d’enzymes de biosynthèse des HS : développement de méthodologies pour la synthèse de fragments de structure bien définie." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112233.

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Les Héparanes sulfates (HS) appartiennent à la famille des glycosaminoglycanes (GAGs) qui sont des polysaccharides existants sur la surface cellulaire ou dans la matrice extracellulaire des cellules animales. Les GAGs jouent des rôles essentiels dans plusieurs processus biologiques via leurs interactions avec certaines protéines (chemokines, cytokines, facteurs de croissance, enzymes…) dont ils modulent les activités biologiques. Ils sont constitués par la répétition d’un motif disaccharidique de base comportant un acide uronique lié à un 2-amino-sucre. Une diversité moléculaire considérable provient de l’existence de divers motifs de O-et/ou N-sulfatation ainsi que de motifs d’épimérisation au niveau de l’acide uronique. Cette diversité qui est responsable d’interactions spécifiques de haute affinité avec différentes protéines serait due à l’action des différentes enzymes de biosynthèse. Ce travail de thèse vise à développer de nouvelles méthodologies nécessaires à la préparation d’une chimiothèque octasaccharidique de fragments d’HS, dans le but d’étudier la spécificité des enzymes de biosynthèse des HS et principalement la N-déacétylase N-sulfotransférase (NDST) et la C-5 épimérase. La chimiothèque octasaccharidique peut être obtenue à partir d’un seul octasaccharide dont les quatre atomes d’azote seraient protégés par des groupements protecteurs différents (octasaccharide « N-différencié »). La synthèse de cet octasaccharide constitue notre objectif principal.Nous nous sommes intéressés dans un premier temps à l’optimisation de la synthèse d’une brique disaccharidique impliquée dans la synthèse des fragments d’héparane sulfate. Dans cet objectif nous avons mis au point une méthode d’acétylation sélective de l’hydroxyle primaire, une méthode de benzylation compatible avec la présence à l’acétate et une procédure « one-pot » comportant quatre étapes de synthèse du disaccharide et facilitant l’accès au disaccharide avec 45 % de rendement global.Par la suite, nous avons optimisé la réaction de glycosylation entre les briques disaccharidiques en utilisant le donneur N-phényltrifluoroacétimidate, dans le but d’avoir une stéréosélectivité α maximale et d’améliorer le rendement de glycosylation. Les conditions optimisées ont permis l’accès au tétrasaccharide et à l’octasaccharide ayant les fonctions amines sous forme de groupements azido, avec un excellent rendement (95 %) et une bonne stéréosélectivité (96/4) en faveur de l’anomère α et sont reproductibles à grande échelle. La troisième partie était consacrée à une étude méthodologique afin de permettre la synthèse de l’octasaccharide « N-différencié » précurseur de la chimiothèque octasaccharidique. Dans ce but, nous avons choisi les groupements Fmoc, Alloc, pNZ et N3 comme groupements protecteurs des fonctions amines de l’octasaccharide. Nous avons préparé différents accepteurs ayant les fonctions amines protégées avec ces groupements afin d’étudier l’influence des différents groupements N-protecteurs de la fonction amine de l’accepteur sur la réaction de glycosylation. Les différents tétrasaccharides ont été obtenus avec d’excellents rendements (87–97 %) et une bonne stéréosélectivité (autour de 95/5 en faveur de l’anomère α). Enfin, nous avons effectué une étude de l’orthogonalité de la déprotection de ces groupements protecteurs (N3, Alloc, Fmoc et pNZ). Cette étude est essentielle avant la préparation de l’octasaccharide pour prouver la stratégie de la synthèse. En plus cette étude facilitera la préparation de la chimiothèque octasaccharidique une fois l’octasaccharide « N-différencié » préparé
Heparan sulfate (HS), a highly sulfated glycosaminoglycan present in the extracellular matrix and at the cell surface, is known to play vital functional roles in various biological processes due to its interactions with proteins (chemokines, cytokines, growth factors, enzymes ...). HS consist of a repeating disaccharide unit, composed of a glucosamine and a hexuronic acid (glucuronic acid or its C5 epimer, iduronic acid).The HS chains are further modified by some epimerases and sulfotransferases during their biosynthesis. These sulfation/epimerization patterns provide considerable complexity. These modifications are required for interaction with many protein ligands.This thesis aims to develop new methodologies for the preparation of a library of octasaccharides, HS fragments, in order to study the specificity of HS biosynthesis enzymes, mainly N-deacetylase N-sulfotransferase (NDST) and the C-5 epimerase. The library can be obtained starting from a single octasaccharide whose four nitrogen atoms are protected by various protecting groups (octasaccharide N-differentiated). The synthesis of this octasaccharide is our main goal.We are interested in first to optimize the synthesis of a fully protected disaccharide which is used as building block in our heparan sulfate fragments synthesis. For this purpose we have developed a regioselective acetylation method of a disaccharide bearing three hydroxyl groups using a temporary protection, a benzylation method compatible with the presence of one acetate group using silver oxide and a one-pot procedure incorporating up to four steps, reducing work-up and time-consuming purifications. In the second chapter, we optimized the glycosylation reaction between two disaccharides using the N- phényltrifluoroacétimidate donor in order to have good α stereoselectivity and yield. We are now able to obtain the tetrasaccharide and the octasaccharide with 95 % yield and (α/β : 96/4) stereoselectivity.The third part was devoted to the methodological study to obtain the N-differentiated octasaccharide, precursor of a octasaccharides library. For this purpose, we chose Fmoc, Alloc, pNZ and N3 as protecting groups of the amine groups. We have prepared various acceptors with these different protecting groups in order to study them in glycosylation reactions. The tetrasaccharides were obtained with excellent yields (87-97%) and good stereoselectivity (around 95/5 for the α anomer) with the four protecting groups. Finally, we conducted a study to deprotect these protecting groups (N3, Alloc, Fmoc and pNZ) on the tetrasaccharides. This study is essential before preparing the octasaccharide as a proof of the synthesis strategy. In addition this study will facilitate the preparation of the octasaccharides library once the N-differentiated octasaccharide prepared
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Werner, Veronika [Verfasser], and Paul [Akademischer Betreuer] Knochel. "Regioselective functionalization of aromatics and heterocycles bearing a bis-silyl-methyl group, one-pot procedure for the preparation of tertiary amines via iminium ions and preparation of new benzodithiophene building blocks for covalent organic frameworks / Veronika Werner ; Betreuer: Paul Knochel." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2015. http://d-nb.info/1127528041/34.

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Lee, Fa-Yen, and 李法諺. "(1) A New and Efficient Procedure for the One-pot Transformation of Aldehydes into the Corresponding Nitriles(2) A New Synthetic Approach to [5.5]-Spiro Bicyclic Carbon Skeleton." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/u57e6y.

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碩士
國立東華大學
化學系
96
The current thesis is composed of two different parts. The first part describes a novel and efficient method for the one-pot transformation of aldehydes into the correspon ding nitriles. It was discovered that ethyl dichlorophosph ate (EtOPOCl2)/1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) co uld be used as an effective dehydrating system to allow th e conversion of aldoxime, generated in situ from aldehydes and hydroxylamine hydrochloride (NH2OH·HCl), into nitrile s. Through this method, a great variety of aldehydes has b een transformed into nitriles in good to high yields. Comp ared with other precedents, the current protocol has sever al advantages in terms of operational simplicity, mild rea ction conditions and broad substrate diversity.In the seco nd part, we depict a new synthetic strategy leading to the chamigrane-type bicyclo[5.5]-spiro skeleton. Our approach is initiated by the Diels-Alder reaction between 2-cyano-3-methyl-2-butenoate (36) and trans-1,3-pentadiene to give t he formation of the monocyclic compound 37. The ester and the cyano groups of 37 were then manipulated into the carb oxaldehyde and 2-oxybutyl groups, respectively, via a few simple operations to provide the intermediate 38. The acid-promoted intramolecular aldol condensation and the subsequ ent dehydration allowed the construction of the bicyclic c ompound 39 possessing the [5.5]-spiro structure. Besides, we also attempted the total synthetic studies of the natur al sesquenterpene (Z)-9-(bromomethylene)-1,5,5- trimethyl-spiro[5.5]undeca-1,7-dien-3-one (34) by using 39 as an adv anced intermediate. The results of this study are also add ressed in the second part.
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Book chapters on the topic "One-pot procedure"

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Witulski, B., and C. Alayrac. "One-Pot Procedure from Trichloroethene." In Three Carbon-Heteroatom Bonds: Ketenes and Derivatives, 1. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-024-00822.

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Witulski, B., and C. Alayrac. "One-Pot Procedure from Trichloroethenamines." In Three Carbon-Heteroatom Bonds: Ketenes and Derivatives, 1. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-024-00823.

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McKenna, C. E., B. A. Kashemirov, and K. M. Błażewska. "The Ludwig One-Pot, Three-Step Procedure." In Organophosphorus Compounds (incl. RO-P and RN-P), 1. Georg Thieme Verlag KG, 2009. http://dx.doi.org/10.1055/sos-sd-042-00949.

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Subramanian, L. R. "Substitution of a Hydroxy Group in a One-Pot Procedure." In Three Carbon-Heteroatom Bonds: Nitriles, Isocyanides, and Derivatives, 1. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-019-00138.

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Spitzner, D. "From Propynols, Enamines, and Ammonium Salts by a Four-Component, One-Pot Procedure." In Six-Membered Hetarenes with One Nitrogen or Phosphorus Atom, 1. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-015-00025.

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Harcken, C. "Reduction Using Two-Step, One-Pot Procedures." In Aldehydes, 1. Georg Thieme Verlag KG, 2007. http://dx.doi.org/10.1055/sos-sd-025-00046.

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Taber, Douglass F. "New Methods for Carbon-Carbon Bond Construction." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0021.

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Sunggak Kim of KAIST reported (Synlett 2009, 81) an improved protocol for the one-carbon free radical homologation of an iodide such as 1 to the nitrile. Primary, secondary, and tertiary iodides work well. We described (Tetrahedron Lett. 2009, 50, 2462) a procedure for the one-carbon homologation of a halide 4 directly to the benzyl ether 6. Bin Xu of Shanghai University showed (Chem. Commun. 2009, 3246) that conversion of a ketone 8 to the 1,1-dibromoalkene set the stage for the net one-carbon homologation to the amide 9. A. Fernández-Mateos of the Universidad de Salamanca uncovered (J. Org. Chem. 2009, 74, 3913) a powerful new branching reaction, condensing the more substituted center of an epoxide 10 with a nitrile 11 to deliver the adduct 12. Useful diastereocontrol was observed with cyclic epoxides. Uli Kazmaier of the Universität des Saarlandes optimized (Adv. Synthy. Cat. 2009, 351, 1395) a Mo catalyst for the hydrostannation of a terminal alkene 13 to the branched product 14. Dong-Mei Cui of the Zhejiang University of Technology and Chen Zhang of Zhejiang University (both in Hangzhou) developed (Chem. Commun. 2009, 1577) a complementary procedure, converting the terminal alkene 15 into the branched alkenyl tosylate 16. The Wittig reaction is notorious for racemizing sensitive aldehydes. Hélène Lebel of the Université de Montréal demonstrated (Organic Lett. 2009, 11, 41) a simple one-pot protocol for sequential oxidation and homologation of 17 that preserved the integrity of the adjacent stereogenic center. The stereocontrolled construction of trisubstituted alkenes is still a major issue in organic synthesis. Giancarlo Verardo of the University of Udine established (J. Phys. Org. Chem. 2009, 22, 24) that the α-diazo ester 19, readily prepared directly from the simple ester, was converted by I2 to the alkene 20 with high geometric control. Condensation with the Ohira reagent 22 is often the method of choice for converting an aldehyde into the homologated alkyne. Hubert Maehr and Milan Uskokovic of Bioxell and Carl P. Schaffner of the Waksman Institute described (Syn. Commun. 2009, 39, 299) an optimized, scalable procedure for the in situ preparation of 22 and the conversion of 21 to 23. Note, again, that the sensitive stereogenic center adjacent to the intermediate aldehyde was not epimerized under the reaction conditions.
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Krohn, K., and N. Böker. "One-Pot Procedures Using Phthaloyl Dichlorides as the Electrophiles." In Quinones and Heteroatom Analogues, 1. Georg Thieme Verlag KG, 2006. http://dx.doi.org/10.1055/sos-sd-028-00345.

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Taber, Douglass F. "Enantioselective Construction of Arrays of Stereogenic Centers: The Breit Synthesis of (+)-Bourgeanic Acid." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0044.

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Kyungsoo Oh of Indiana University Purdue University Indianapolis devised (Organic Lett. 2009, 11, 5682) a new ligand that with Cu delivered predominantly one diastereomer of the Henry adduct 3, and with Zn delivered the other. Liu-Zhu Gong of the University of Science and Technology of China reported (Angew. Chem. Int. Ed. 2009, 48, 6503) the Darzens condensation of the diazoacetamide 5 with a variety of aldehydes to give the corresponding epoxy amides with high diastereo- and enantiocontrol. Michael J. Krische of the University of Texas, Austin, applied (Organic Lett. 2009, 11, 3108, 3112) his asymmetric allylation to a variety of primary diols including 7, leading to the homologated product 9. M. Christina White of the University of Illinois showed (J. Am. Chem Soc. 2009, 131, 11707) that Pd-mediated oxidative amination of carbamate 10 delivered the protected 1,3-amino alcohol 11 with high diastereocontrol. James P. Morken of Boston College devised (J. Am. Chem Soc. 2009, 131, 9134) a Pt catalyst for the asymmetric bis-boration of dienes. The allyl borane prepared from 12 added with high stereocontrol to benzaldehyde, to give, after oxidation, the diol 13. Carlos F. Barba III of Scripps/La Jolla optimized (Angew. Chem. Int. Ed. 2009, 48, 9848) an organocatalyst for the enantioselective conjugate addition of an alkoxy aldehyde 15 to a nitroalkene. Do Hyun Ryu of Sungkyunkwan University found (Chem. Commun. 2009, 5460) that an organocatalyst could also mediate the dipolar cycloaddition of a diazo ester 18 to an unsaturated aldehyde, giving 19 with high diastereo- and enantiocontrol. Francesco Fini and Luca Bernardi of the University of Bologna developed (J. Am. Chem Soc. 2009, 131, 9614) an organocatalyst that effected enantioselective dipolar cycloaddition of the nitrone derived from 20 to the unsaturated ester 21. Kevin Burgess of Texas A&M optimized (J. Am. Chem Soc. 2009, 131, 13236) an Ir catalyst for the enantioselective hydrogenation of trisubstituted alkenes such as 23. In the course of a synthesis of (+)-faranal, Varinder K. Aggarwal of the University of Bristol described (Angew. Chem. Int. Ed. 2009, 48, 6317) a one-pot procedure for the conversion of the allyl borane 25 into 27.
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Taber, Douglass F. "Arrays of Stereogenic Centers: The Davies Synthesis of Acosamine." In Organic Synthesis. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190200794.003.0041.

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Babak Borhan of Michigan State University found (Angew. Chem. Int. Ed. 2011, 50, 2593) that the ligand developed for asymmetric osmylation worked well for the enantioselective cyclization of 1 to 2. Kyungsoo Oh of IUPUI devised (Org. Lett. 2011, 13, 1306) a Co catalyst for the stereocontrolled addition of 4 to 3 to give 5. Michael J. Krische of the University of Texas Austin prepared (Angew. Chem. Int. Ed. 2011, 50, 3493) 8 by Ir*-mediated oxidation/addition of 7 to 6. Yixin Lu of the National University of Singapore employed (Angew. Chem. Int. Ed. 2011, 50, 1861) an organocatalyst to effect the stereocontrolled addition of 10 to 9. Naoya Kumagai and Masakatsu Shibasaki of the Institute of Microbial Chemistry, Tokyo took advantage (J. Am. Chem. Soc. 2011, 133, 5554) of the soft Lewis basicity of 13 to effect stereocontrolled condensation with 12. Yujiro Hayashi of the Tokyo University of Science found (Angew. Chem. Int. Ed. 2011, 50, 2804, not illustrated) that aqueous chloroacetaldehyde participated well in crossed aldol condensations. Andrew V. Malkov, now at Loughborough University, and Pavel Kocovsky of the University of Glasgow showed (J. Org. Chem. 2011, 76, 4800) that the inexpensive mixed crotyl silane 16 could be added to 15 with high stereocontrol. Shigeki Matsunaga of the University of Tokyo and Professor Shibasaki opened (J. Am. Chem. Soc. 2011, 133, 5791) the meso aziridine 18 with malonate 19 to give 20. Masahiro Terada of Tohoku University effected (Org. Lett. 2011, 13, 2026) the conjugate addition of 22 to 21 with high stereocontrol. Jinxing Ye of the East China University of Science and Technology reported (Angew. Chem. Int. Ed. 2011, 50, 3232, not illustrated) a related conjugate addition. Kian L. Tian of Boston College observed (Org. Lett. 2011, 13, 2686) that the kinetic hydroformylation of 24 set the relative configuration of two stereogenic centers. Alexandre Alexakis and Clément Mazet of the Université de Genève established (Angew. Chem. Int. Ed. 2011, 50, 2354) a tandem one-pot procedure for the addition of 26 to 27 to give 28.
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Conference papers on the topic "One-pot procedure"

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Wendler, Edison P., Rafaela C. Carmona*, and Alcindo A. Dos Santos. "One-pot Procedure to Prepare 2-Pyridil-2-oxazolines." In 14th Brazilian Meeting on Organic Synthesis. São Paulo: Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0205-2.

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Pistea, Ioana. "GREEN SYNTHESES OF ANDERSON-EVANS POLYANIONS {XMo6O24} IN ONE-POT PROCEDURE." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/61/s24.021.

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Radivoy, Gabriel, Francisco Alonso, Miguel Yus, Viviana Dorn, Adriana Pierini, Andrés Ciolino, Yanina Moglie, and Fabiana Nador. "Reductive amination of aldehydes using a lithium-arene(cat.) reducing system. A simple one-pot procedure for the synthesis of secondary amines." In The 15th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2011. http://dx.doi.org/10.3390/ecsoc-15-00678.

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Maleki, Ali, and Nakisa Ghamari. "A three-component one-pot procedure for the synthesis benzimidazolo-quinazolinone derivatives in the presence of chitosan-supported metal nanocomposite as a green and reusable catalyst." In The 17th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2013. http://dx.doi.org/10.3390/ecsoc-17-a034.

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Wąchalski, Krzysztof. "Bridge over the Vistula river in Toruń (Poland)." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.0307.

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<p>The construction of the arch bridge in Toruń was one of the greatest and more spectacular engineering projects implemented during the recent years. In December 2013 the Poland’s largest arch bridge was completed and opened. The bridge has two spans, 270m long each, and is used as a bridge crossing over the Vistula river (Fig.1). The bridge is over 1.9 km long counting the access overbridges (viaducts). The erection procedure of the bridge was unique and individual, as the structural scale suggests. Generally, the assembly covered junction of arch elements on the assembly site near the Vistula river bank and the pontoon water transport of arch girders, which were settled on the arch abutments. A unique affordable structural solution deals with the support footing of a great number of small concrete pre-cast piles transferring a giant horizontal force into the subsoil. The steel-arch is modeled by a hingeless system without a tie, transferring horizontal force into supports. A original solution of assembly geometry control system and monitoring system was applicate to floating erection. Innovation was done of introducing material for the pot bearings, whose durability was 5-times longer than the ordinary ones. A novel slide material PTFE was used, the so-called grey teflon of improved abrasion ability. The new PTFE solutions were recently applied for the spherical bearings, but never they have been for the pot bearings. The bearings worked out an individual product specification, based on experiments conducted in the EU laboratory. The world's pioneering enterprise is application of a hundred pot bearings for the bridge and viaducts.</p>
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Naimi-Jamal, Mohammad Reza, and Maryam karimi. "A simple, convenient three component one-pot procedure for the synthesis of benzimidazolo-quinazolinone derivatives in the presence Silica-based sulfonic acid (MCM-41-SO3H): a efficient and practical catalyst." In The 19th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2015. http://dx.doi.org/10.3390/ecsoc-19-a001.

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