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Fang J, Min Q, Qin H, Liu F. Intermolecular Acylation with Acylphosphonates as Alkyl Radical Receptor under Metal-Free Conditions. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202207044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Kowalczyk D, Albrecht Ł. Enantioselective organocatalytic approach to δ-lactones bearing a fused cyclohexanone scaffold. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Modrocká V, Veverková E, Baran R, Šebesta R. Enantioselective Synthesis of 2,3-Dihydrofurocoumarins by Squaramide-Catalyzed Michael Addition/Cyclization of 4-Hydroxycoumarins with β-Nitrostyrenes. ChemistrySelect 2018. [DOI: 10.1002/slct.201800147] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Viktória Modrocká
- Department of Organic Chemistry; Faculty of Natural Sciences; Comenius University in Bratislava, Mlynska dolina; Ilkovičova 6 842 15 Bratislava Slovakia
| | - Eva Veverková
- Department of Organic Chemistry; Faculty of Natural Sciences; Comenius University in Bratislava, Mlynska dolina; Ilkovičova 6 842 15 Bratislava Slovakia
| | - Rastislav Baran
- Department of Organic Chemistry; Faculty of Natural Sciences; Comenius University in Bratislava, Mlynska dolina; Ilkovičova 6 842 15 Bratislava Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry; Faculty of Natural Sciences; Comenius University in Bratislava, Mlynska dolina; Ilkovičova 6 842 15 Bratislava Slovakia
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Wolf FF, Klare H, Goldfuss B. Asymmetric Michael Additions of 4-Hydroxycoumarin to β-Nitrostyrenes with Chiral, Bifunctional Hydrogen-Bonding Catalysts. J Org Chem 2016; 81:1762-8. [DOI: 10.1021/acs.joc.5b02167] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Florian F. Wolf
- Institut für Organische Chemie, Universität zu Köln, Greinstrasse 4, 50939 Köln, Germany
| | - Helge Klare
- Institut für Organische Chemie, Universität zu Köln, Greinstrasse 4, 50939 Köln, Germany
| | - Bernd Goldfuss
- Institut für Organische Chemie, Universität zu Köln, Greinstrasse 4, 50939 Köln, Germany
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Ren C, Wei F, Xuan Q, Wang D, Liu L. Organocatalytic Enantioselective Reaction of Cyclopent-2-enone-Derived Morita-Baylis-Hillman Alcohols with 4-Hydroxycoumarins. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500443] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Chauhan P, Mahajan S, Kaya U, Hack D, Enders D. Bifunctional Amine-Squaramides: Powerful Hydrogen-Bonding Organocatalysts for Asymmetric Domino/Cascade Reactions. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201401003] [Citation(s) in RCA: 412] [Impact Index Per Article: 41.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Monge D, Jiang H, Alvarez-Casao Y. Masked Unsaturated Esters/Amides in Asymmetric Organocatalysis. Chemistry 2015; 21:4494-504. [DOI: 10.1002/chem.201405552] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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8
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Dzięgielewski M, Pięta J, Kamińska E, Albrecht Ł. Organocatalytic Synthesis of Optically Active Organophosphorus Compounds. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403184] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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9
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Hack D, Chauhan P, Deckers K, Hermann GN, Mertens L, Raabe G, Enders D. Combining silver catalysis and organocatalysis: a sequential Michael addition/hydroalkoxylation one-pot approach to annulated coumarins. Org Lett 2014; 16:5188-91. [PMID: 25250728 PMCID: PMC4608575 DOI: 10.1021/ol502551u] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Indexed: 01/09/2023]
Abstract
A highly stereoselective one-pot procedure for the synthesis of five-membered annulated hydroxycoumarins has been developed. By merging primary amine catalysis with silver catalysis, a series of functionalized coumarin derivatives were obtained in good yields (up to 91%) and good to excellent enantioselectivities (up to 99% ee) via a Michael addition/hydroalkoxylation reaction. Depending on the substituents on the enynone, the synthesis of annulated six-membered rings is also feasible.
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Affiliation(s)
- Daniel Hack
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Pankaj Chauhan
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Kristina Deckers
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Gary N. Hermann
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Lucas Mertens
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Gerhard Raabe
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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Chiral bifunctional squaramide catalyzed asymmetric Michael addition of ethyl α-nitroacetate to β,γ-unsaturated α-ketoesters. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Wu L, Wang Y, Song H, Tang L, Zhou Z, Tang C. Organocatalyzed Highly Diastereo- and Enantioselective Tandem Sulfa-Michael-Mannich Reaction of 2-Mercaptoquinoline-3-carbaldimines with Maleimides. ChemCatChem 2014. [DOI: 10.1002/cctc.201300993] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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12
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Hu K, Wang Y, Zhou Z, Tang C. Novel thiophosphonodiamides as efficient hydrogen bond donor catalysts in tandem Michael addition–cyclization of malononitrile and 2-(E)-2-nitrovinylphenols. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.11.099] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Yu H, Wang Q, Wang Y, Song H, Zhou Z, Tang C. Stereoselective Synthesis of Highly Functionalized Nitrocyclopropanes through the Organocatalyic Michael‐Addition‐Initiated Cyclization of Bromonitromethane and β,γ‐Unsaturated α‐Ketoesters. Chem Asian J 2013; 8:2859-63. [DOI: 10.1002/asia.201300778] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 07/01/2013] [Indexed: 11/05/2022]
Affiliation(s)
- Haijian Yu
- Institute and State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071 (P. R. China), Fax: (+86) 022‐23503627
| | - Qiaohui Wang
- Institute and State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071 (P. R. China), Fax: (+86) 022‐23503627
| | - Youming Wang
- Institute and State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071 (P. R. China), Fax: (+86) 022‐23503627
| | - Haibing Song
- Institute and State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071 (P. R. China), Fax: (+86) 022‐23503627
| | - Zhenghong Zhou
- Institute and State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071 (P. R. China), Fax: (+86) 022‐23503627
| | - Chuchi Tang
- Institute and State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071 (P. R. China), Fax: (+86) 022‐23503627
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Hu K, Lu A, Wang Y, Zhou Z, Tang C. Chiral bifunctional squaramide catalyzed asymmetric tandem Michael-cyclization reaction: efficient synthesis of optically active 2-amino-4H-chromene-3-carbonitrile derivatives. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.07.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Wu L, Wang Y, Song H, Tang L, Zhou Z, Tang C. Enantioselective Organocatalytic Domino Michael/Aldol Reactions: An Efficient Procedure for the Stereocontrolled Construction of 2H-Thiopyrano[2,3-b]quinoline Scaffolds. Chem Asian J 2013; 8:2204-10. [DOI: 10.1002/asia.201300450] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Indexed: 01/15/2023]
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