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Relevant bibliographies by topics / Chiral ketones

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Journal articles
Dissertations / Theses
Book chapters
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Academic literature on the topic 'Chiral ketones'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 April 2022

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Journal articles on the topic "Chiral ketones"

1

Cozzi, Pier Giorgio, Sandro Gambarotta, Magda Monari, and Luca Zoli. "Convenient Preparation of Chiral Dipyrrolylmethanes Containing a Chiral Moiety." Collection of Czechoslovak Chemical Communications 72, no. 8 (2007): 1046–56. http://dx.doi.org/10.1135/cccc20071046.

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A variety of chiral bis-pyrroles have been made readily accessible via acid-catalyzed condensation of chiral ketones with pyrrole. Three representative chiral ketones 2-4 taken from the chiral pool were transformed into the corresponding bis-pyrrole derivatives in a straightforward acid-catalyzed condensation. Chiral β-hydroxy ketone derivatives, prepared through proline-catalyzed aldol condensation of acetone and an aldehyde, are readily transformed into the corresponding dipyrrolylmethane by the acid-catalyzed condensation carried out in the same conditions. The crystal structure of the chir

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2

Basdevant, Benoit, Audrey-Anne Guilbault, Samuel Beaulieu, Antoine Jobin-Des Lauriers та Claude Y. Legault. "Iodine(III)-mediated synthesis of chiral α-substituted ketones: recent advances and mechanistic insights". Pure and Applied Chemistry 89, № 6 (2017): 781–89. http://dx.doi.org/10.1515/pac-2016-1212.

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AbstractThe development of iodine(III)-mediated synthetic transformations has received growing interest, in particular to mediate enantioselective processes. In this class, the α-tosyloxylation of ketone derivatives using iodine(III) is a particularly powerful one, as it yields α-tosyloxy ketones – versatile chiral precursors that enable rapid access to numerous α-chiral ketones through nucleophilic displacement. Despite years of research from numerous groups, the enantioselectivities for this transformation have remained modest. Using quantum chemical calculations, we have uncovered a possibl

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3

Fan, Lulu, Shinobu Takizawa, Yoshiki Takeuchi, Kazuhiro Takenaka та Hiroaki Sasai. "Pd-catalyzed enantioselective intramolecular α-arylation of α-substituted cyclic ketones: facile synthesis of functionalized chiral spirobicycles". Organic & Biomolecular Chemistry 13, № 17 (2015): 4837–40. http://dx.doi.org/10.1039/c5ob00382b.

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Synthesis of chiral spirocyclic ketones was accomplishedviathe Pd-catalyzed intramolecular α-arylation of α-substituted cyclic ketones. The obtained spirocyclic ketone could be converted into an acid–base organocatalyst.

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4

Shao, You-Dong, Dan-Dan Han, Wen-Yue Ma, and Dao-Juan Cheng. "Chiral phosphoric acid catalyzed atroposelective and diastereoselective synthesis of 9-aryltetrahydroacridines." Organic Chemistry Frontiers 7, no. 16 (2020): 2255–62. http://dx.doi.org/10.1039/d0qo00534g.

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A chiral phosphoric acid catalyzed atroposelective annulation between 2-aminoaryl ketones and alicyclic ketones has been developed to access a new library of enantioenriched axially chiral 9-aryltetrahydroacridines.

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Kitahara, Kazumasa, Haruna Mizutani, Seiji Iwasa та Kazutaka Shibatomi. "Asymmetric Synthesis of α-Chloro-α-halo Ketones by Decarboxylative Chlorination of α-Halo-β-ketocarboxylic Acids". Synthesis 51, № 23 (2019): 4385–92. http://dx.doi.org/10.1055/s-0039-1690009.

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Chiral α-chloro-α-fluoro ketones were synthesized by enantioselective decarboxylative chlorination of α-chloro-β-ketocarboxylic acids in the presence of a chiral amine catalyst. The reaction yielded the corresponding α-chloro-α-fluoro ketones with moderate-to-high enantioselectivity (up to 90% ee). The method was also applied to the synthesis of α-bromo-α-chloro ketones with 90% ee.

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Böhmer, Wesley, Lucien Koenekoop, Timothée Simon та Francesco G. Mutti. "Parallel Interconnected Kinetic Asymmetric Transformation (PIKAT) with an Immobilized ω-Transaminase in Neat Organic Solvent". Molecules 25, № 9 (2020): 2140. http://dx.doi.org/10.3390/molecules25092140.

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Comprising approximately 40% of the commercially available optically active drugs, α-chiral amines are pivotal for pharmaceutical manufacture. In this context, the enzymatic asymmetric amination of ketones represents a more sustainable alternative than traditional chemical procedures for chiral amine synthesis. Notable advantages are higher atom-economy and selectivity, shorter synthesis routes, milder reaction conditions and the elimination of toxic catalysts. A parallel interconnected kinetic asymmetric transformation (PIKAT) is a cascade in which one or two enzymes use the same cofactor to

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7

Qin, Xu-Long, Li-Jun Xu, and Fu-She Han. "Recent Advances in Organocatalyzed Asymmetric Reduction of Prochiral Ketones: An Update." Synthesis 54, no. 07 (2021): 1708–20. http://dx.doi.org/10.1055/a-1697-7758.

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AbstractChiral alcohols are important synthetic intermediates and building blocks for the synthesis of drugs, agrochemicals, and natural products. Asymmetric reduction of prochiral ketones has been the most investigated method for accessing chiral alcohols. In this regard, organocatalyzed asymmetric reduction, as a complementary method to transition-metal- and enzyme-catalyzed reactions, has attracted tremendous interest in the past decades due to the reactions with such catalysts being metal-free and easy to operate, and principally, the ease of recovery and the ability to reuse the catalysts

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8

Sheeba, Mani Mary, Manoharan Muthu Tamizh, Sundaram Ganesh Babu, Nattamai S. P. Bhuvanesh, and Ramasamy Karvembu. "Ru(ii)-p-cymene complexes containing esters of chiral d/l-phenylalanine derived aroylthiourea ligands for enantioselective reduction of pro-chiral ketones." RSC Advances 6, no. 72 (2016): 68494–503. http://dx.doi.org/10.1039/c6ra12428c.

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Cabrera, Armando, Pankaj Sharma, F. Javier Pérez-Flores, Luis Velasco, J. Luis Arias, and Laura Rubio-Pérez. "Diastereo- and enantioselective reductive amination of cycloaliphatic ketones by preformed chiral palladium complexes." Catal. Sci. Technol. 4, no. 8 (2014): 2626–30. http://dx.doi.org/10.1039/c4cy00058g.

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10

Hilt, Gerhard, Jan Fährmann, and Ludmila Hermann. "The Application of 1,2-Oxazinanes as Chiral Cyclic Weinreb Amide-Type Auxiliaries Leading to a Three-Component, One-Pot Reaction." Synthesis 54, no. 08 (2021): 2005–18. http://dx.doi.org/10.1055/a-1683-0484.

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Abstract1,2-Oxazines were synthesised via a copper-catalysed aerobic acyl nitroso Diels–Alder reaction from 1,4-disubstituted 1,3-dienes and N-Boc-hydroxylamine. From this, 1,2-oxazinanes were obtained in a novel follow-up reaction path. The stability of several 1,2-oxazines and 1,2-oxazinanes towards organometallic compounds was tested to rate their operability as cyclic chiral Weinreb amide auxiliaries. 3,6-Di-tert-butyl-1,2-oxazinane gave the best results and was introduced as a chiral Weinreb amide-type auxiliary to yield chiral α-substituted ketones in a diastereomeric ratio of up to 98:2

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Dissertations / Theses on the topic "Chiral ketones"

1

Yip, Yiu-chung. "Asymmetric epoxidation of unfunctionalized olefins catalyzed by chiral ketones /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18156502.

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Klein, Solange. "Design and synthesis of catalysts for the asymmetric epoxidation of alkenes with Oxone." Thesis, University of Liverpool, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250699.

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Tsuchiya, Tomoki. "Novel chiral ketones as catalysts for asymmetric epoxidation reactions." Thesis, Imperial College London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419713.

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Wailes, J. Steven. "Novel chiral ketones as catalysts for asymmetric oxidation reactions." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364652.

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5

Torok, Daniel Seth 1963. "Diastereoselective cyclopropanations of alpha,beta-unsaturated ketals derived from chiral hydrobenzoin." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276784.

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2-Cycloalken-1-one-(-)-erythro-hydrobenzoin ketals undergo efficient and diastereoselective cyclopropanation when treated with an excess of Simmons-Smith reagent. The resulting crystalline products yield enantiomerically pure cyclopropyl compounds upon recrystallization. For example, 2-cyclohexen-1-one-(-)-erythro-hydrobenzoin ketal gave, in 90% yield, a 19:1 mixture of diastereomeric cyclopropanes as established by 62.9 MHz ¹³C NMR spectroscopy. Upon one recrystallization, diastereomerically pure cyclopropane was obtained in 78% recovery. Hydrolysis gave (+)-norcaranone of greater than 99% ee

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Hayter, Barry R. "Synthesis of chiral ketones for use in asymmetric epoxidation reactions." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285722.

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7

Wong, Man-kin. "Design and synthesis of chiral ketones for catalytic asymmetric epoxidation of unfunctionalized olefins /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1815623X.

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8

黃文健 and Man-kin Wong. "Design and synthesis of chiral ketones for catalytic asymmetric epoxidation of unfunctionalized olefins." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31236285.

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9

Hopwood, Jennifer. "Development of transaminases for the synthesis of enantiomerically pure chiral amines." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/development-of-transaminases-for-the-synthesis-of-enantiomerically-purechiral-amines(8de4f806-b79c-498d-95cc-34bbeb1a9d5c).html.

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Enantiomerically pure amines have a variety of industrial applications. They are valuable components within the pharmaceutical and agrochemical industry, resolving agents for separation of racemic mixtures by dimeric salt formation and ligands for transition metal catalysts and chemocatalysts. Biocatalysis is increasingly seen as the method of choice for the synthesis of chiral amines. New commercial enzymes being readily available and new screening/evolution technologies allow for enzyme optimisation towards a set of required conditions for chiral amine synthesis. Transaminases are a class of

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Hogan, Matthew Charles. "Process issues in redox biocatalysis : cyclohexanone monooxygenase catalysed chiral lactone syntheses." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325655.

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Book chapters on the topic "Chiral ketones"

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Wong, Man Kin, Yiu Chung Yip, and Dan Yang. "Asymmetric Epoxidation Catalyzed by Chiral Ketones." In Asymmetric Catalysis from a Chinese Perspective. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19472-6_5.

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2

Paterson, Ian. "Aldol Condensations of Ketones Using Chiral Boron Reagents." In Selectivities in Lewis Acid Promoted Reactions. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2464-2_24.

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3

Cho, Byung Tae, and Yu Sung Chun. "Asymmetric Reduction of α-Functionalized Ketones with Organoboron-Based Chiral Reducing Agents." In ACS Symposium Series. American Chemical Society, 2001. http://dx.doi.org/10.1021/bk-2001-0783.ch009.

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4

Waldman, T. E., G. Schaefer, and D. P. Riley. "Discrete Chiral Rhodium Phosphine Complexes as Catalysts for Asymmetric Hydrosilation of Ketones." In ACS Symposium Series. American Chemical Society, 1993. http://dx.doi.org/10.1021/bk-1993-0517.ch005.

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5

Wong, O. Andrea, and Yian Shi. "Chiral Ketone and Iminium Catalysts for Olefin Epoxidation." In Topics in Current Chemistry. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/128_2008_16.

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Wong, O. Andrea, and Yian Shi. "Chiral Ketone and Iminium Catalysts for Olefin Epoxidation." In Topics in Current Chemistry. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02815-1_16.

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7

Li, Songtao, Zhangliang Zhu, Jian-Wen Wang, et al. "Research Progress of Aldehyde Ketone Reductase for Asymmetric Catalysis of Chiral Compounds." In Lecture Notes in Electrical Engineering. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4801-2_80.

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8

Plaquevent, J. C., D. Cahard, and F. Guillen. "With a Chiral Proton Source." In Ketones. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-026-00377.

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9

Salan, J. "Of Diphenylsulfonium Isopropylide to Chiral Lactams." In Ketones. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-026-00524.

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Plaquevent, J. C., D. Cahard, and F. Guillen. "Enantioselective Alkylation via Chiral Lithium Amide Deprotonation." In Ketones. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-026-00363.

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Conference papers on the topic "Chiral ketones"

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Fernandes, Talita de A., Diego A. Alonso, Carmen Nájera, and Paulo R. R. Costa. "Enantioselective Conjugate Addition of Aldehydes and Ketones to Maleimides Catalyzed by a Chiral Bifunctional Nbenzoimidazol- cyclohexanediamine." In 14th Brazilian Meeting on Organic Synthesis. Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-14bmos-r0071-2.

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2

Al-Basheer, Watheq. "SOLVENT, TEMPERATURE And CONCENTRATION EFFECTS On THE OPTICAL ACTIVITY Of CHIRAL FIVE-And-SIX MEMBERED RING KETONES CONFORMERS." In 72nd International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2017. http://dx.doi.org/10.15278/isms.2017.wg05.

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3

Vo-Thanh, Giang, Audrey Aupoix, and Chloée Bournaud. "Asymmetric transfer hydrogenation of aromatic ketones using rhodium complexes of chiral N-heterocyclic carbenes derived from (S)-pyroglutamic acid." In The 17th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2013. http://dx.doi.org/10.3390/ecsoc-17-a005.

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Reports on the topic "Chiral ketones"

1

Brown, H. C., P. V. Ramachandran, S. A. Weissman, and S. Swaminathan. Selective Reductions. 46. Effect of the Steric Requirement at the 2- Position of Apopinene on Chiral Reductions. B-Iso-2-n-Propylapopinocampheyl-9- Borabicyclo(3.3.1)Nonane as Improved Reagents for the Chiral Reduction of Alpha, Beta-Acetylenic Ketones and Alpha-Keto Esters. Defense Technical Information Center, 1991. http://dx.doi.org/10.21236/ada230919.

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