Academic literature on the topic 'Absolute asymmetric catalysis'

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Journal articles on the topic "Absolute asymmetric catalysis"

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Kaupp, Gerd, and Michael Haak. "Absolute Asymmetric Synthesis by Irradiation of Chiral Crystals." Angewandte Chemie International Edition in English 32, no. 5 (1993): 694–95. http://dx.doi.org/10.1002/anie.199306941.

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Lin, Yun-Ming, Zhongtao Li, and Julie Boucau. "Predicting the R/S absolute configuration in asymmetric bifunctional catalysis (ABC)." Tetrahedron Letters 48, no. 30 (2007): 5275–78. http://dx.doi.org/10.1016/j.tetlet.2007.05.131.

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Buchcic-Szychowska, Aleksandra, Anna Zawisza, Stanisław Leśniak, and Michał Rachwalski. "Highly Efficient Asymmetric Morita–Baylis–Hillman Reaction Promoted by Chiral Aziridine-Phosphines." Catalysts 12, no. 4 (2022): 394. http://dx.doi.org/10.3390/catal12040394.

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Continuing our research on the use of organophosphorus derivatives of aziridines in asymmetric synthesis and expanding the scope of their applicability, chiral aziridine-phosphines obtained earlier in our laboratory were used as chiral catalysts in the asymmetric Morita–Baylis–Hillman reaction of methyl vinyl ketone and methyl acrylate with various aromatic aldehydes. The desired chiral products were formed in moderate to high chemical yields and with enantiomeric excess reaching value of 98% ee in some cases. The use of catalysts being pairs of enantiomers led to the desired products with opp
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Feringa, Ben L., and Richard A. van Delden. "Absolute Asymmetric Synthesis: The Origin, Control, and Amplification of Chirality." Angewandte Chemie International Edition 38, no. 23 (1999): 3418–38. http://dx.doi.org/10.1002/(sici)1521-3773(19991203)38:23<3418::aid-anie3418>3.0.co;2-v.

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Barron, L. D. "True and false chirality and absolute asymmetric synthesis." Journal of the American Chemical Society 108, no. 18 (1986): 5539–42. http://dx.doi.org/10.1021/ja00278a029.

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Yamamoto, Satoshi, Kenji Matsuda, and Masahiro Irie. "Absolute Asymmetric Photocyclization of a Photochromic Diarylethene Derivative in Single Crystals." Angewandte Chemie International Edition 42, no. 14 (2003): 1636–39. http://dx.doi.org/10.1002/anie.200250417.

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Kuhn, Alexander, and Peer Fischer. "Absolute Asymmetric Reduction Based on the Relative Orientation of Achiral Reactants." Angewandte Chemie International Edition 48, no. 37 (2009): 6857–60. http://dx.doi.org/10.1002/anie.200902841.

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Bielski, Roman, and Michal Tencer. "Macroscopically chiral system of three independent orientational effects as a condition for absolute asymmetric synthesis." Canadian Journal of Chemistry 81, no. 9 (2003): 1029–37. http://dx.doi.org/10.1139/v03-128.

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The paper introduces the concept of using three independent, macroscopic factors affecting mutual orientation of the reactant molecules to accomplish absolute asymmetric synthesis. Unlike with other methodologies of asymmetric synthesis in physical fields, none of the utilized factors is chiral in itself (as, e.g., circularly polarized light would be), but the combination of the three constitutes a macroscopically chiral influence. Examples of applicable directional factors are time-even vector fields (e.g., electric field and the directional effects of surfaces and interfaces) and the time-od
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Wu, Yusheng, Lothar Esser, and Jef K. De Brabander. "Revision of the Absolute Configuration of Salicylihalamide A through Asymmetric Total Synthesis." Angewandte Chemie 39, no. 23 (2000): 4308–10. http://dx.doi.org/10.1002/1521-3773(20001201)39:23<4308::aid-anie4308>3.0.co;2-4.

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Kaimori, Yoshiyasu, Yui Hiyoshi, Tsuneomi Kawasaki, Arimasa Matsumoto, and Kenso Soai. "Formation of enantioenriched alkanol with stochastic distribution of enantiomers in the absolute asymmetric synthesis under heterogeneous solid–vapor phase conditions." Chemical Communications 55, no. 36 (2019): 5223–26. http://dx.doi.org/10.1039/c9cc01875a.

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Dissertations / Theses on the topic "Absolute asymmetric catalysis"

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Sallembien, Quentin. "Controlling handedness of triarylamine trisamide assemblies by means of circularly polarized light or chiral additives." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS499.

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Pour ouvrir la voie à la catalyse asymétrique absolue, des polymères supramoléculaires de triarylamine trisamide (TATA) ont été étudiés sous l'influence de la lumière polarisée circulairement (LPC) et d’additifs/solvants chiraux. Les propriétés associatives de TATA aux chaînes latérales saturées ou diacétyléniques furent sondées en présence ou non de LPC par SANS, UV–Vis–NIR, FT–IR, RMN et RPE. Les deux types d’autoassemblage formés par ces molécules, agrégats non-spécifiques et assemblages hélicoïdaux par liaisons hydrogène, sont en compétition et la nature de l’espèce majoritaire dépend des
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Gruner, Konstanze K., Thomas Hopfmann, Kazuhiro Matsumoto, Anne Jäger, Tsutomu Katsuki, and Hans-Joachim Knölker. "Efficient iron-mediated approach to pyrano[3,2-a]carbazole alkaloids - first total syntheses of O-methylmurrayamine A and 7-methoxymurrayacine, first asymmetric synthesis and assignment of the absolute configuration of (−)-trans-dihydroxygirinimbine." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-138748.

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Iron-mediated oxidative cyclisation provides an efficient approach to pyrano[3,2-a]carbazole alkaloids. Thus, improved routes to girinimbine and murrayacine as well as the first total syntheses of O-methylmurrayamine A and 7-methoxymurrayacine are reported. Asymmetric epoxidation of girinimbine led to (−)-trans-dihydroxygirinimbine and the assignment of its absolute configuration<br>Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich
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Gruner, Konstanze K., Thomas Hopfmann, Kazuhiro Matsumoto, Anne Jäger, Tsutomu Katsuki, and Hans-Joachim Knölker. "Efficient iron-mediated approach to pyrano[3,2-a]carbazole alkaloids - first total syntheses of O-methylmurrayamine A and 7-methoxymurrayacine, first asymmetric synthesis and assignment of the absolute configuration of (−)-trans-dihydroxygirinimbine." Royal Society of Chemistry, 2011. https://tud.qucosa.de/id/qucosa%3A27777.

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Iron-mediated oxidative cyclisation provides an efficient approach to pyrano[3,2-a]carbazole alkaloids. Thus, improved routes to girinimbine and murrayacine as well as the first total syntheses of O-methylmurrayamine A and 7-methoxymurrayacine are reported. Asymmetric epoxidation of girinimbine led to (−)-trans-dihydroxygirinimbine and the assignment of its absolute configuration.<br>Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
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Book chapters on the topic "Absolute asymmetric catalysis"

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Taber, Douglass F. "The Li Synthesis of (–)-Fusarisetin A." In Organic Synthesis. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190200794.003.0097.

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Fusarisetin A 3 is an intriguing inhibitor of cell migration and invasion that is not itself cytotoxic. Ang Li of the Shanghai Institute of Organic Chemistry developed (J. Am. Chem. Soc. 2012, 134, 920) a total synthesis of (–)-fusarisetin A, demonstrating that the natural material had the absolute configuration opposite to that originally assigned. A key step in the synthesis was the highly diastereoselective cyclization of 1 to 2. The absolute configuration of 1 and so of synthetic 3 was derived from commercial citronellol, which is prepared on an industrial scale by asymmetric synthesis. To
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Taber, Douglass F. "C–H Functionalization: The Maimone Synthesis of Podophyllotoxin." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0021.

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Matthias Beller of the Universität Rostock developed (Angew. Chem. Int. Ed. 2014, 53, 6477) a Rh catalyst for the acceptorless dehydrogenation of an alkane 1 to the alkene 2. Bhisma K. Patel of the Indian Institute of Technology Guwahati effected (Org. Lett. 2014, 16, 3086) oxidation of cyclohexane 3 and 4 to form the allylic benzoate 5. Justin Du Bois of Stanford University devised (Chem. Sci. 2014, 5, 656) an organocatalyst that mediated the hydroxylation of 6 to 7. Vladimir Gevorgyan of the University of Illinois, Chicago hydrosilylated (Nature Chem. 2014, 6, 122) 8 to give an intermediate
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"α-Substitution in Carbonyl Compounds and Derivatives." In The Chemistry of Carbonyl Compounds and Derivatives. The Royal Society of Chemistry, 2022. http://dx.doi.org/10.1039/9781837670888-00201.

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The discussion on the reactivity of carbonyl compounds is expanded by incorporating reactions which involve the position alpha to the carbonyl carbon. The α-alkylation of carbonyl compounds, enamines, and azaenolates derived from imines is presented and the regio- and stereochemical aspects are considered. We address the formation of enolates from aldehydes and ketones, and the corresponding aza analogs from imines and nitriles, emphasizing the structural and experimental conditions, which may discriminate between kinetic and thermodynamic products. Particular attention is paid to the aldol re
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Taber, Douglass. "Stereocontrolled Construction of C-N Rings: The Vanderwal Synthesis of Norfluorocurarine." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0056.

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Forrest E. Michael of the University of Washington described (Organic Lett. 2009, 11, 1147) the Pd-catalyzed aminative cyclization of 1 to the differentially-protected diamine 3. Peter Somfai of KTH Chemical Science and Engineering observed (Organic Lett. 2009, 11, 919) that [1,2]-rearrangement of 4 proceeded to deliver 5 with near-perfect maintenance of enantiomeric excess. Tushar Kanti Chakraborty of the Central Drug Research Institute, Lucknow applied (Tetrahedron Lett. 2009, 50, 3306) the Ti(III) reduction of epoxides to the Sharpless-derived ether 6, leading to the pyrrolidine 7. Chun-Jia
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Taber, Douglass F. "Synthesis of Naturally Occurring Cyclic Ethers: Boivivianin B (Murakami), SC- Δ 13 -9-IsoF (Taber), Brevisamide (Panek, Lindsley,Ghosh), Gambierol (Mori)." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0050.

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The challenge of controlling the relative and absolute configuration of highly substituted cyclic ether-containing natural products continues to stimulate the development of new synthetic methods. Masahiro Murakami of Kyoto University showed (J. Org. Chem. 2009, 74, 6050) that Rh-mediated addition of an aryl boronic acid to 1 proceeded with high syn diastereocontrol, giving 3. This set the stage for Au-mediated rearrangement, leading to 4. We found (J. Org. Chem. 2009, 74, 5516) that asymmetric epoxidation of 5 followed by exposure to AD-mix could be used to prepare each of the four diastereom
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Taber, Douglass F. "C–O Ring Construction: Sauropus Hexoside (Xie/Wu), (+)-Ipomeamarone (Usuki), Decytospolide A (Fujioka), Cytospolide P (Goswami), (+)-Didemniserinolipid B (Tong), Gymnothelignan N (She)." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0051.

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A range of biological activity was observed for the group of 3,6-anhydro-2-deoxy hexosides, of which 3 is representative, isolated from Sauropus rostratus. Wei-Jia Xie and Xiao-Ming Wu of China Pharmaceutical University prepared (Org. Lett. 2014, 16, 5004) 3 by the dealkylative cyclization of 1 to 2. (+)-Ipomeamarone 6 is a phytoalexin isolated from mold-damaged sweet pota­toes. Yoshinosuke Usuki of Osaka City University assembled (Chem. Lett. 2014, 43, 1882) 6 by the diastereoselective cyclization of 4 to 5. Hiromichi Fujioka of Osaka University protected (Org. Lett. 2014, 16, 3680) the enone
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