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Oohara T, Nambu H, Anada M, Takeda K, Hashimoto S. A Polymer-Supported Chiral Fluorinated Dirhodium(II) Complex for Asymmetric Amination of Silyl Enol Ethers. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200219] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Takeda K, Oohara T, Shimada N, Nambu H, Hashimoto S. Continuous Flow System with a Polymer-Supported Dirhodium(II) Catalyst: Application to Enantioselective Carbonyl Ylide Cycloaddition Reactions. Chemistry 2011; 17:13992-8. [DOI: 10.1002/chem.201102733] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Indexed: 11/10/2022]
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Resolution of optical isomers of β-amino ketone compounds with two chiral centres by high performance liquid chromatography. Se Pu 2011; 29:365-7. [DOI: 10.3724/sp.j.1123.2011.00365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Yoo WJ, Miyamura H, Kobayashi S. Polymer-Incarcerated Gold−Palladium Nanoclusters with Boron on Carbon: A Mild and Efficient Catalyst for the Sequential Aerobic Oxidation−Michael Addition of 1,3-Dicarbonyl Compounds to Allylic Alcohols. J Am Chem Soc 2011; 133:3095-103. [DOI: 10.1021/ja110142y] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Woo-Jin Yoo
- Department of Chemistry, School of Science and Graduate School of Pharmaceutical Sciences, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroyuki Miyamura
- Department of Chemistry, School of Science and Graduate School of Pharmaceutical Sciences, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shu̅ Kobayashi
- Department of Chemistry, School of Science and Graduate School of Pharmaceutical Sciences, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
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Takeda K, Oohara T, Anada M, Nambu H, Hashimoto S. A Polymer-Supported Chiral Dirhodium(II) Complex: Highly Durable and Recyclable Catalyst for Asymmetric Intramolecular CH Insertion Reactions. Angew Chem Int Ed Engl 2010; 49:6979-83. [DOI: 10.1002/anie.201003730] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Takeda K, Oohara T, Anada M, Nambu H, Hashimoto S. A Polymer-Supported Chiral Dirhodium(II) Complex: Highly Durable and Recyclable Catalyst for Asymmetric Intramolecular CH Insertion Reactions. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003730] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Ai X, Wang X, Liu JM, Ge ZM, Cheng TM, Li RT. An effective aza-Michael addition of aromatic amines to electron-deficient alkenes in alkaline Al2O3. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.05.054] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Olmos A, Alix A, Sommer J, Pale P. ScIII-Doped Zeolites as New Heterogeneous Catalysts: Mukaiyama Aldol Reaction. Chemistry 2009; 15:11229-34. [DOI: 10.1002/chem.200901647] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mentel M, Schmidt AM, Gorray M, Eilbracht P, Breinbauer R. Polystyrene sulfonyl chloride: a highly orthogonal linker resin for the synthesis of nitrogen-containing heterocycles. Angew Chem Int Ed Engl 2009; 48:5841-4. [PMID: 19582746 DOI: 10.1002/anie.200901643] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Matthias Mentel
- Department 3, Organic Chemistry, Technische Universität Dortmund, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany
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Mentel M, Schmidt A, Gorray M, Eilbracht P, Breinbauer R. Polystyrolsulfonylchlorid - ein hochorthogonales Linkerharz für die Synthese von Stickstoffheterocyclen. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200901643] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Raders SM, Verkade JG. Catalysis of Mukaiyama Aldol Reactions by a Tricyclic Aluminum Alkoxide Lewis Acid. J Org Chem 2009; 74:5417-28. [DOI: 10.1021/jo9009134] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Steven M. Raders
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
| | - John G. Verkade
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
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Vishnumaya MR, Singh VK. Highly Efficient Small Organic Molecules for Enantioselective Direct Aldol Reaction in Organic and Aqueous Media. J Org Chem 2009; 74:4289-97. [DOI: 10.1021/jo900548f] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Vinod K. Singh
- Department of Chemistry, Indian Institute of Technology, Kanpur 208 016, India
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Affiliation(s)
- Alexandre F. Trindade
- Centro de Quimica-Fisica Molecular (CQFM) and Institute of Nanoscience and Nanotechnology (IN), Instituto Superior Técnico, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal, and Institute for Medicines and Phamaceutical Sciences (iMed), Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Pedro M. P. Gois
- Centro de Quimica-Fisica Molecular (CQFM) and Institute of Nanoscience and Nanotechnology (IN), Instituto Superior Técnico, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal, and Institute for Medicines and Phamaceutical Sciences (iMed), Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Carlos A. M. Afonso
- Centro de Quimica-Fisica Molecular (CQFM) and Institute of Nanoscience and Nanotechnology (IN), Instituto Superior Técnico, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal, and Institute for Medicines and Phamaceutical Sciences (iMed), Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
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Mei K, Zhang S, He S, Li P, Jin M, Xue F, Luo G, Zhang H, Song L, Duan W, Wang W. (S)-Pyrrolidine sulfonamide catalyzed asymmetric direct aldol reactions of aryl methyl ketones with aryl aldehydes. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.02.164] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Doherty S, Goodrich P, Hardacre C, Pârvulescu V, Paun C. Efficient Heterogeneous Asymmetric Catalysis of the Mukaiyama Aldol Reaction by Silica- and Ionic Liquid-Supported Lewis Acid Copper(II) Complexes of Bis(oxazolines). Adv Synth Catal 2008. [DOI: 10.1002/adsc.200700425] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Dolle RE, Le Bourdonnec B, Morales GA, Moriarty KJ, Salvino JM. Comprehensive survey of combinatorial library synthesis: 2005. ACTA ACUST UNITED AC 2006; 8:597-635. [PMID: 16961395 DOI: 10.1021/cc060095m] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Roland E Dolle
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, USA.
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Raj M, Vishnumaya V, Ginotra SK, Singh VK. Highly Enantioselective Direct Aldol Reaction Catalyzed by Organic Molecules. Org Lett 2006; 8:4097-9. [PMID: 16928083 DOI: 10.1021/ol0616081] [Citation(s) in RCA: 170] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have demonstrated that a new class of l-proline-based organic compounds catalyzed the direct aldol reaction between aldehydes and acetone to provide beta-hydroxy ketones in good yields. The reaction is efficient, and 5-10 mol % of the catalyst and excellent enantioselectivities (97-99% ee) were obtained in both aromatic and aliphatic aldehydes. The presence of a gem-diphenyl group at the beta-carbon is necessary for high enantioselectivity.
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Affiliation(s)
- Monika Raj
- Department of Chemistry, Indian Institute of Technology, Kanpur, India 208 016
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Onyeozili EN, Maleczka RE. alpha-Substituted acylsilanes via a highly selective [1,4]-Wittig rearrangement of alpha-benzyloxyallylsilane. Chem Commun (Camb) 2006:2466-8. [PMID: 16758017 DOI: 10.1039/b603228a] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
alpha-Benzyloxyallylsilane undergoes efficient [1,4]-Wittig rearrangement to generate an enolate intermediate that can be trapped with various electrophiles, thereby providing a new synthetic approach to substituted acylsilanes.
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Affiliation(s)
- Edith N Onyeozili
- Department of Chemistry, Michigan State University, 540 Chemistry, East Lansing, Michigan 48824, USA
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Hui XP, Chen CA, Wu KH, Gau HM. Polystyrene-supportedN-sulfonylated amino alcohols and their applications to titanium(IV) complexes catalyzed enantioselective diethylzinc additions to aldehydes. Chirality 2006; 19:10-5. [PMID: 17089334 DOI: 10.1002/chir.20332] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Crosslinked polystyrene-supported resins 4, 7a, and 7b containing N-sulfonylated beta-amino alcohol in 98, 20, and 40% loadings are prepared. Asymmetric diethylzinc additions to benzaldehyde employing titanium complexes of 10 mol % resins 4, 7a, or 7b are examined and the best performed 7a/Ti(O-i-Pr)4 catalytic system applies to various aldehydes to afford desired secondary alcohols in excellent enantioselectivities up to 95% ee. The resin 7a is reused five times, giving the product with enantioselectivities >or=86% ee and an 81% ee is obtained when the resin is used the sixth time. The used resin 7a is refreshed with 1 M HCl and the asymmetric reaction employing the regenerated resin 7a gives the product in 88% ee.
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Affiliation(s)
- Xin-Ping Hui
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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