Literatura académica sobre el tema "Symmetric/Asymmetric Catalysis"
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Artículos de revistas sobre el tema "Symmetric/Asymmetric Catalysis"
Wang, Xiao-Chen, Zhao-Ying Yang y Ming Zhang. "Synthesis and Applications of Chiral Bicyclic Bisborane Catalysts". Synthesis 54, n.º 06 (19 de noviembre de 2021): 1527–36. http://dx.doi.org/10.1055/a-1701-7679.
Texto completoDesimoni, Giovanni, Giuseppe Faita y Karl Anker Jørgensen. "C2-Symmetric Chiral Bis(Oxazoline) Ligands in Asymmetric Catalysis". Chemical Reviews 106, n.º 9 (septiembre de 2006): 3561–651. http://dx.doi.org/10.1021/cr0505324.
Texto completoHenderson, Alexander S., John F. Bower y M. Carmen Galan. "Carbohydrate-based N-heterocyclic carbenes for enantioselective catalysis". Org. Biomol. Chem. 12, n.º 45 (2014): 9180–83. http://dx.doi.org/10.1039/c4ob02056a.
Texto completoLitwinienko, Grzegorz, Gino A. DiLabio y K. U. Ingold. "A theoretical and experimental investigation of some unusual intermolecular hydrogen-bond IR bands — Appearances can be deceptive". Canadian Journal of Chemistry 84, n.º 10 (1 de octubre de 2006): 1371–79. http://dx.doi.org/10.1139/v06-097.
Texto completoRuppel, Joshua V., Xin Cui, Xue Xu y X. Peter Zhang. "Stereoselective intramolecular cyclopropanation of α-diazoacetates via Co(ii)-based metalloradical catalysis". Org. Chem. Front. 1, n.º 5 (2014): 515–20. http://dx.doi.org/10.1039/c4qo00041b.
Texto completoCostabile, Chiara, Stefania Pragliola y Fabia Grisi. "C2-Symmetric N-Heterocyclic Carbenes in Asymmetric Transition-Metal Catalysis". Symmetry 14, n.º 8 (5 de agosto de 2022): 1615. http://dx.doi.org/10.3390/sym14081615.
Texto completoCastillón, Sergio, Carmen Claver y Yolanda Díaz. "C1 and C2-symmetric carbohydrate phosphorus ligands in asymmetric catalysis". Chemical Society Reviews 34, n.º 8 (2005): 702. http://dx.doi.org/10.1039/b400361f.
Texto completoVogl, Erasmus M., Shigeki Matsunaga, Motomu Kanai, Takehiko Iida y Masakatsu Shibasaki. "Linking BINOL: C2-symmetric ligands for investigations on asymmetric catalysis". Tetrahedron Letters 39, n.º 43 (octubre de 1998): 7917–20. http://dx.doi.org/10.1016/s0040-4039(98)01756-0.
Texto completoAl-Majid, Abdullah M., Brian L. Booth y Jonnes T. Gomes. "C2-Symmetric Ligands for Asymmetric Catalysis based on Feist's Acid". Journal of Chemical Research, n.º 2 (1998): 78–79. http://dx.doi.org/10.1039/a706185d.
Texto completovan Slagmaat, Christian A. M. R., Khi Chhay Chou, Lukas Morick, Darya Hadavi, Burgert Blom y Stefaan M. A. De Wildeman. "Synthesis and Catalytic Application of Knölker-Type Iron Complexes with a Novel Asymmetric Cyclopentadienone Ligand Design". Catalysts 9, n.º 10 (22 de septiembre de 2019): 790. http://dx.doi.org/10.3390/catal9100790.
Texto completoTesis sobre el tema "Symmetric/Asymmetric Catalysis"
Axe, Philip. "Pseudo-C3-symmetric titanium complexes for asymmetric catalysis". Thesis, University of Bath, 2008. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.512296.
Texto completoLuo, Yunfei. "Chemoenzymatic synthesis of C2 symmetric chiral dienes for asymmetric catalysis". Thesis, University of Liverpool, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.539483.
Texto completoBöhnisch, Torben. "C2-Symmetric Pyrazole-Bridged Ligands and Their Application in Asymmetric Transition-Metal Catalysis". Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2015. http://hdl.handle.net/11858/00-1735-0000-0028-876A-6.
Texto completoLake, Fredrik. "C2- and C3-symmetric ligands via ring-opening of aziridines". Doctoral thesis, KTH, Chemistry, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3424.
Texto completoThis thesis deals with the design and synthesis of chiralenantiopure nitrogencontaining ligands and the use of theseligands in asymmetric catalysis. A modular synthetic approachto enantiopure nitrogen-containing ligands was developed. Thesynthetic method is based on the ring-opening of activatedchiral aziridines by nitrogen nucleophiles. The aziridines areconveniently prepared from amino alcohols. The structure oftheaziridine and of the nucleophile can be extensively varied andlibraries of ligands are easily prepared. The use of primaryamines affords C2-symmetric bis(sulfonamides), whereas the use ofammonia affords C3-symmetric tris(sulfonamides) that can beelaborated into the corresponding tetra-amines.
The C2- and C3-symmetric ligands were used in the asymmetrictitaniummediated addition of diethylzinc to benzaldehyderesulting in modest enantioselection, 76% ee. A thoroughinvestigation of the reaction conditions revealed that theamount of Ti(OiPr)4has a decisive effect on the reaction rate and thestereochemical outcome of the reaction. The reaction timedecreased from about 90 hours to 15 minutes and theenantioselectivity changed from 26% of the (R)- enantiomer to72% of the (S)-enantiomer when the Ti(OiPr)4:benzaldehyde ratio was increased from 0.125:1 to1.48:1. Moreover, the titanium-mediated addition of diethylzincto benzaldehyde was studied in the presence of chiraladditives. The bis(sulfonamides) were also used in thecyclopropanation of cinnamyl alcohol. However, only lowenantioselection was observed, 27% ee.
The C3-symmetric tetra-amines were reacted to formazaphosphatranes. These weak acids were only partiallydeprotonated by the strong base KOtBu to form the correspondingproazaphosphatranes. The unexpectedly strong basicity of theproazaphosphatranes was believed to be due to steric effects assuggested by DFT calculations. The tetra-amines and thesulfonamides were used for the preparation of metal complexesof Lewis acidic metals such as titanium(IV) andzirconium(IV).
Keywords:asymmetric catalysis, aziridine, benzaldehyde,diethylzinc, enantioselective, ligand, proazaphosphatrane,ring-opening, sulfonamide, symmetry, titanium, zirconium
Böhnisch, Torben [Verfasser], Franc [Akademischer Betreuer] [Gutachter] Meyer, Guido [Gutachter] Clever, Thomas [Gutachter] Waitz, Ulf [Gutachter] Diederichsen, Dietmar [Gutachter] Stalke y Konrad [Gutachter] Koszinowski. "C2-Symmetric Pyrazole-Bridged Ligands and Their Application in Asymmetric Transition-Metal Catalysis / Torben Böhnisch. Betreuer: Franc Meyer. Gutachter: Franc Meyer ; Guido Clever ; Thomas Waitz ; Ulf Diederichsen ; Dietmar Stalke ; Konrad Koszinowski". Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://d-nb.info/1103233963/34.
Texto completoGillespie, Jason A. "Design and synthesis of wide bite angle phosphacyclic ligands". Thesis, University of St Andrews, 2012. http://hdl.handle.net/10023/3100.
Texto completoFjellander, Ester. "Self-adaptable catalysts : Importance of flexibility and applications in asymmetric catalysis". Doctoral thesis, KTH, Organisk kemi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12852.
Texto completoQC20100630
Hunt, Jamie. "C1- and C2- Symmetrical Metal-Salen Complexes and their Application to Asymmetric Catalysis". Thesis, University of Newcastle Upon Tyne, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.515075.
Texto completoStranne, Robert. "Investigation of Symmetry and Electronic Effects in Asymmetric Palladium-Catalysed Allylic Substitutions". Doctoral thesis, KTH, Chemistry, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3283.
Texto completoZalubovskis, Raivis. "Flexibility – a tool for chirality control in asymmetric catalysis". Doctoral thesis, KTH, Kemi, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4166.
Texto completoQC 20100929
Libros sobre el tema "Symmetric/Asymmetric Catalysis"
Harald, Gröger, ed. Asymmetric organocatalysis: From biomimetic concepts to applications in asymmetric synthesis. Weinheim: Wiley-VCH, 2005.
Buscar texto completoBerkessel, Albrecht, Harald Gröger y David MacMillan. Asymmetric Organocatalysis: From Biomimetic Concepts to Applications in Asymmetric Synthesis. Wiley-VCH Verlag GmbH, 2005.
Buscar texto completoBerkessel, Albrecht, Harald Gröger y David MacMillan. Asymmetric Organocatalysis: From Biomimetic Concepts to Applications in Asymmetric Synthesis. Wiley & Sons, Incorporated, John, 2006.
Buscar texto completoCapítulos de libros sobre el tema "Symmetric/Asymmetric Catalysis"
Gamez, P., F. Fache, M. Lemaire y P. Mangeney. "Heterogeneous Asymmetric Catalysis with C2 Symmetric Amine-Modified Rhodium/Silica". En Chiral Reactions in Heterogeneous Catalysis, 147–49. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1909-6_16.
Texto completoZhang, Wanbin y Delong Liu. "Symmetrical 1,1′-Bidentate Ferrocenyl Ligands". En Chiral Ferrocenes in Asymmetric Catalysis, 175–214. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527628841.ch7.
Texto completoKeyes, Michael C. y William B. Tolman. "Chiral C3-symmetric ligands and their transition metal complexes". En Asymmetric Catalysis, 189–219. Elsevier, 1998. http://dx.doi.org/10.1016/s1874-5156(97)80009-1.
Texto completoNakata, Kumi, Madoka Kawamura y Ryuichi Shirai. "Catalytic Asymmetric Epoxidation of Olefins by C2-Symmetric Chiral Dioxiranes". En 19th International Congress on Heterocyclic Chemistry, 259. Elsevier, 2003. http://dx.doi.org/10.1016/b978-0-08-044304-1.50251-3.
Texto completoBandar, Jeffrey S. "Reductions". En Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0010.
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