1
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Ziyaei Halimehjani A, Tahvildari H. Bromonitroalkenes as efficient intermediates in organic synthesis. Org Biomol Chem 2024; 22:4801-4838. [PMID: 38817165 DOI: 10.1039/d4ob00221k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Bromonitroalkenes are useful molecules in synthetic organic chemistry. They are mainly prepared from nitroalkenes via bromination reactions. In this review, the application of bromonitroalkenes as partners in the reaction with a diversity of mono- and bi-functional molecules, including aldehydes and ketones, active methylene compounds, 1,2-dicarbonyls, enamines, enols, electron-rich arenes, amidines, azomethine ylides, azirines, diazo compounds, and many others, is reviewed. By using these substrates, various biologically active scaffolds, such as heterocycles, carbocycles, spirocycles, polycyclic systems, natural products, and other useful acyclic compounds, were prepared. In addition, due to their dielectrophilic character, electrophilic and nucleophilic character, and ability to participate in cycloaddition reactions, bromonitroalkenes were efficiently applied in asymmetric cascade/domino/tandem reactions catalyzed by chiral catalysts. In this manuscript, around 55 papers are summarized and discussed during the years 2000-2023.
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Affiliation(s)
| | - Hoonam Tahvildari
- Department of Chemistry, Sharif University of Technology, Tehran 11155-9516, Iran.
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2
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Gaucherand A, Yen-Pon E, García-López D, Naubron JV, Chentouf S, Giorgi M, Humbel S, Jean M, Rodriguez J, Bonne D. Padlocking dihydrofurannulation for the control of small degree of helicity built on a fused-tetracyclic core. Chem Sci 2024; 15:7300-7307. [PMID: 38756805 PMCID: PMC11095505 DOI: 10.1039/d4sc00745j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/15/2024] [Indexed: 05/18/2024] Open
Abstract
Enantioselective construction of small molecules displaying a configurationally stable helical shape built on a fused-tetracyclic core is a daunting synthetic challenge even more pronounced when five-membered rings are incorporated in the structure. The resulting higher configurational lability strongly hampers their access, and therefore the development of new efficient methodologies is timely and highly desirable. In this context, we describe a padlocking approach via the enantioselective organocatalytic domino furannulation of appropriately designed achiral fused-tricyclic precursors resulting in the synthesis of configurationally locked helically chiral tetracyclic scaffolds featuring one or two five-membered rings with the simultaneous control of central and helical chiralities.
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Affiliation(s)
- Arthur Gaucherand
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Expédite Yen-Pon
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Diego García-López
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Jean-Valère Naubron
- Aix Marseille Université, CNRS, Centrale Marseille, FSCM, Spectropole Marseille France
| | - Sara Chentouf
- Aix Marseille Université, CNRS, Centrale Marseille, FSCM, Spectropole Marseille France
| | - Michel Giorgi
- Aix Marseille Université, CNRS, Centrale Marseille, FSCM, Spectropole Marseille France
| | - Stéphane Humbel
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Marion Jean
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Jean Rodriguez
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Damien Bonne
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2 Marseille France
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3
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Wen G, Feng X, Lin L. Water-enabling strategies for asymmetric catalysis. Org Biomol Chem 2024; 22:2510-2522. [PMID: 38450421 DOI: 10.1039/d3ob02122j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Water possesses unique advantages, including abundance, environmental friendliness and mild effects. Undoubtedly, it is an ideal solvent or reagent in chemical syntheses. Water also shows unique abilities in catalytic asymmetric synthesis. It can accelerate reaction rates, improve diastereo- or enantioselectivities, initiate reactions, diversify chemo, diastereo- or enantioselectivities through various effects (hydrophobic, hydrogen bonding, protonation). Several reviews have demonstrated the positive effects of water in asymmetric synthesis. In this review, we summarize water-enabling strategies in the last decade, and focus on advances which reveal how water affects a reaction.
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Affiliation(s)
- Gang Wen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
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4
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Kucharski DJ, Suchanek R, Kowalczyk R, Boratyński PJ. Development of Mefloquine-Based Bifunctional Secondary Amine Organocatalysts for Enantioselective Michael and Friedel-Crafts Reactions. J Org Chem 2024; 89:111-123. [PMID: 38069836 DOI: 10.1021/acs.joc.3c01791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
The chiral framework based on 11-aminomefloquine has been utilized for the first time to construct bifunctional organocatalysts. These catalysts demonstrate high enantioselectivity in both Michael additions and Friedel-Crafts reactions across a variety of substrates, achieving up to >99% ee. The distinctive feature is the incorporation of a secondary amine group, offering unique tight hydrogen-bonding capabilities in the protonated state, as supported by DFT computation. The diversity of these organocatalysts suggests their broad applicability across multiple reaction classes.
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Affiliation(s)
- Dawid J Kucharski
- Department of Organic and Medicinal Chemistry, Wrocław University of Technology, Wyb. Wyspiańskiego 26, Wrocław 50-370, Poland
| | - Radosław Suchanek
- Department of Organic and Medicinal Chemistry, Wrocław University of Technology, Wyb. Wyspiańskiego 26, Wrocław 50-370, Poland
| | - Rafał Kowalczyk
- Department of Bioorganic Chemistry Wrocław University of Technology, Wyb. Wyspiańskiego 26, Wrocław 50-370, Poland
| | - Przemysław J Boratyński
- Department of Organic and Medicinal Chemistry, Wrocław University of Technology, Wyb. Wyspiańskiego 26, Wrocław 50-370, Poland
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5
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Yavari I, Mohsenzadeh R, Ravaghi P, Safaei M. Synthesis of pyrrolidin-2-ylidenes and pyrrol-2-ylidenes via 1,3-dipolar cycloaddition of H-bond-assisted azomethine ylides to nitrostyrenes. Org Biomol Chem 2023. [PMID: 37309553 DOI: 10.1039/d3ob00725a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Hydrogen-bond-assisted azomethine ylides, generated from 2-(benzylamino)-2-(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)acetonitriles, undergo a formal Huisgen 1,3-dipolar cycloaddition with β-bromo-β-nitrostyrenes to afford a diastereoselective synthesis of highly substituted pyrrolidin-2-ylidene derivatives. When β-nitrostyrenes were used as the alkene component, 2-(4,5-diaryl-1,5-dihydro-2H-pyrrol-2-ylidene)-1H-indene-1,3(2H)-diones were obtained. Efficient conversion of pyrrolidene-2-ylidenes to the corresponding pyrrol-2-ylidenes takes place in refluxing 1-propanol in the presence of excess Et3N. Also, the structure of the pyrrolidene-2-ylidene derivative was determined by X-ray crystallography.
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Affiliation(s)
- Issa Yavari
- Department of Chemistry, Tarbiat Modares University, PO Box 14115-175, Tehran, Iran.
| | - Ramin Mohsenzadeh
- Department of Chemistry, Tarbiat Modares University, PO Box 14115-175, Tehran, Iran.
| | - Parisa Ravaghi
- Department of Chemistry, Tarbiat Modares University, PO Box 14115-175, Tehran, Iran.
| | - Maryam Safaei
- Department of Chemistry, Tarbiat Modares University, PO Box 14115-175, Tehran, Iran.
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6
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Huang J, Chen JF, Cui X, Zhao JZ, Tang Z, Li GX. Preparation of Dihydronaphthofurans from α-Hydroxyl Ketones via a One-Pot Multicomponent Reaction Based on Heyns Rearrangement. J Org Chem 2022; 87:3311-3318. [PMID: 35166530 DOI: 10.1021/acs.joc.1c02958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polysubstituted 1,2-dihydronaphthofurans were efficiently obtained in high yields and good diastereoselectivities with readily available substrates. The reaction proceeds smoothly via a series of tandem reactions, including Heyns rearrangement, oxidation, Friedel-Crafts reaction, and cyclization. The high stereoselectivity of the reaction is ascribed to the activation of the imine via an intramolecular hydrogen bond. Air is directly used as the oxidation medium, which makes the reaction safe and easy to perform. Moreover, the reaction features multiple components, which ensures the diversity of products.
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Affiliation(s)
- Jin Huang
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
| | - Jin-Fang Chen
- College of Art and Sciences, Shanxi Agricultural University, Taigu, Shanxi 030800, China
| | - Xin Cui
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
| | - Jin-Zhong Zhao
- College of Art and Sciences, Shanxi Agricultural University, Taigu, Shanxi 030800, China
| | - Zhuo Tang
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
| | - Guang-Xun Li
- Natural Products Research Center, Chengdu Institution of Biology, Chinese Academy of Science, Chengdu, Sichuan 610041, China
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7
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Susam ZD, Özcan BD, Kurtkaya E, Yildirim E, Tanyeli C. Organocatalytic enantioselective synthesis of dihydronaphthofurans and dihydrobenzofurans: reaction development and insights into stereoselectivity. Org Biomol Chem 2022; 20:8725-8740. [DOI: 10.1039/d2ob01571d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Squaramide/cinchona alkaloid-derived bifunctional organocatalysts are in high demand in asymmetric transformations.
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Affiliation(s)
- Zeynep Dilşad Susam
- Middle East Technical University, Department of Chemistry, 06800, Çankaya, Ankara, Turkey
| | - Bilge Deniz Özcan
- Middle East Technical University, Department of Chemistry, 06800, Çankaya, Ankara, Turkey
| | - Enis Kurtkaya
- Middle East Technical University, Department of Chemistry, 06800, Çankaya, Ankara, Turkey
| | - Erol Yildirim
- Middle East Technical University, Department of Chemistry, 06800, Çankaya, Ankara, Turkey
| | - Cihangir Tanyeli
- Middle East Technical University, Department of Chemistry, 06800, Çankaya, Ankara, Turkey
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8
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Ma ZW, Wang CC, Chen XP, Sun B, Tao JC, Lv QJ. Asymmetric Synthesis of 2,3-Dihydrofurans via Squaramide Catalyzed Michael-Alkylation Reaction. LETT ORG CHEM 2021. [DOI: 10.2174/1570178619666211231112237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
Asymmetric Catalysis, Dihydrofuran, Michael-Alkylation Reaction, Tertiary Amine-Squaramide, Organocatalysis, α-Bromonitroalkene
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Affiliation(s)
- Zhi-Wei Ma
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, P. R. China
| | - Chuan-Chuan Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, P. R. China
| | - Xiao-Pei Chen
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, P. R. China
| | - Bin Sun
- College of Chemistry, Zhengzhou University, Zhengzhou, P. R. China
| | - Jing-Chao Tao
- College of Chemistry, Zhengzhou University, Zhengzhou, P. R. China
| | - Quan-Jian Lv
- Faculty of Science, Henan University of Animal Husbandry and Economy, Zhengzhou, P. R. China
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9
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Aminocatalytic stereoselective synthesis of (E)-α-naphthyl enals via cross-coupling-like reaction of 1-bromo-2-naphthols with enals. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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10
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Montesinos-Magraner M, Lluna-Galán C, Cernicharo-Toledo F, Vila C, Blay G, Pedro JR. Enantioselective Friedel-Crafts reaction of hydroxyarenes with nitroenynes to access chiral heterocycles via sequential catalysis. Org Biomol Chem 2021; 19:6990-6994. [PMID: 34350922 DOI: 10.1039/d1ob01238j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Naphthols, hydroxyindoles and an activated phenol are reacted with differently substituted (E)-nitrobut-1-en-3-ynes using the commercially available Rawal's chiral squaramide. The corresponding β-nitroalkynes were obtained with good yields and excellent enantioselectivities. Moreover, dihydronaphthofurans can be accessed via silver catalysed cyclization in a tandem one-pot procedure, with high preservation of the optical purity.
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Affiliation(s)
- Marc Montesinos-Magraner
- Departament de Química Orgànica, Facultat de Química, Universitat de València, Dr. Moliner 50, 46100 Burjassot, València, Spain.
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11
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Lu Z, Zhang Q, Ke M, Hu S, Xiao X, Chen F. TfOH-Catalyzed [4 + 1] Annulation of p-Quinone Methides with α-Aryl Diazoacetates: Straightforward Access to Highly Functionalized 2,3-Dihydrobenzofurans. J Org Chem 2021; 86:7625-7635. [PMID: 33993694 DOI: 10.1021/acs.joc.1c00672] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We have developed a methodology for the greatly efficient construction of significant 2,3-dihydrobenzofuran scaffolds bearing a quaternary carbon center at the C2 position by means of [4 + 1] annulation reactions between p-quinone methides and α-aryl diazoacetates as C1 synthons through organocatalysis by readily accessible TfOH catalyst under mild and transition metal-free conditions. This metal-free protocol furnishes an operationally simple and swift process for the free assembly of diverse highly functionalized 2,3-dihydrobenzofurans and also features broad substrate scope, excellent functional group compatibility, and environmental friendliness. Mechanistic investigation suggested that the reaction undergoes a rapid cascade protonation/intermolecular Michael addition/intramolecular substitution process.
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Affiliation(s)
- Zuolin Lu
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Qingchun Zhang
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Miaolin Ke
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Sha Hu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, P.R. China
| | - Xiao Xiao
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Fener Chen
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P.R. China.,Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, P.R. China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, China
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12
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Nikerov DS, Ashatkina MA, Shiryaev VA, Tkachenko IM, Rybakov VB, Reznikov AN, Klimochkin YN. Synthesis of non-racemic dihydrofurans via Ni(II)-catalyzed asymmetric Michael addition. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Dong X, Wang W, Li H, Xu Q, Ye L, Li X, Zhao Z, Li X. Stereoselective synthesis of 2-trifluoromethylated and 2-difluoromethylated dihydrofurans via organocatalytic cascade Michael/alkylation reaction. Org Chem Front 2021. [DOI: 10.1039/d1qo00367d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A highly stereoselective cascade Michael/alkylation process has been established to construct 2-trifluoromethylated and 2-difluoromethylated dihydrofurans.
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Affiliation(s)
- Xiaodi Dong
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- College of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- China
| | - Wei Wang
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- College of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- China
| | - Huang Li
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- College of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- China
| | - Qiya Xu
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- College of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- China
| | - Ling Ye
- Faculty of Geosciences and Environmental Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Xinying Li
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- College of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- China
| | - Zhigang Zhao
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- College of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- China
| | - Xuefeng Li
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- College of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- China
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14
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Dong X, Tang Z, Ye L, Shi Z, Zhao Z, Li X. Stereoselective Synthesis of Dihydrofuranoindoles via the Friedel-Crafts Alkylation/Annulation Cascade Process. J Org Chem 2020; 85:11607-11617. [PMID: 32830980 DOI: 10.1021/acs.joc.0c00444] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A stereoselective annulation protocol was developed to construct dihydrofuranoindoles from readily available starting materials. In the presence of a bifunctional squaramide, the Friedel-Crafts alkylation/annulation cascade process occurred smoothly to provide dihydrofuranoindoles in 26-95% isolated yields exclusively as trans-diastereomers (38-99% ee). This catalytic protocol was compatible with a range of structurally distinct hydroxyindoles bearing the hydroxyl group at different positions, providing four kinds of dihydrofuranoindoles. Moreover, gram-scale synthesis and further synthetic manipulation of the product were also demonstrated.
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Affiliation(s)
- Xiaodi Dong
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu 610041, China
| | - Zhishun Tang
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu 610041, China
| | - Ling Ye
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Zhichuan Shi
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu 610041, China
| | - Zhigang Zhao
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu 610041, China
| | - Xuefeng Li
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu 610041, China
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15
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Chen FY, Xiang L, Zhan G, Liu H, Kang B, Zhang SC, Peng C, Han B. Highly stereoselective organocatalytic synthesis of pyrrolidinyl spirooxindoles containing halogenated contiguous quaternary carbon stereocenters. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151806] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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16
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Olyaei A, Sadeghpour M. Dihydronaphthofurans: synthetic strategies and applications. RSC Adv 2020; 10:5794-5826. [PMID: 35497409 PMCID: PMC9049295 DOI: 10.1039/c9ra09987e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 01/29/2020] [Indexed: 11/21/2022] Open
Abstract
Dihydronaphthofurans (DHNs) are an important class of arene ring-fused furans which are widely found in many natural and non-natural products and drug candidates with relevant biological and pharmacological activities. Furthermore, vinylidene-naphthofurans exhibit photochromic properties when exposed to UV or sun light at room temperature. For these reasons, a vast array of synthetic procedures for the preparation of dihydronaphthofurans including annulation of naphthols with various reagents, cycloaddition reactions ([3 + 2], [4 + 1] and Diels-Alder), intramolecular transannulation, Friedel-Crafts, Wittig, Claisen rearrangement, neophyl rearrangement and other reactions under various conditions have been developed over the past decades. This review aims to describe the different strategies developed so far for the synthesis of dihydronaphthofurans and their applications. After a brief introduction to the types of dihydronaphthofurans and their biological activities, the different synthetic approaches such as chemical, photochemical, and electrochemical, methods are described and organized on the basis of the catalysts and the other reagents employed in the syntheses. The subsequent section focuses on biological and pharmacological applications and photochromic properties of the target compounds.
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Affiliation(s)
- Abolfazl Olyaei
- Department of Chemistry, Payame Noor University (PNU) PO BOX 19395-4697 Tehran Iran
| | - Mahdieh Sadeghpour
- Department of Chemistry, Takestan Branch, Islamic Azad University Takestan Iran
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17
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Feng J, Wang S, Feng J, Li Q, Yue J, Yue G, Zou P, Wang G. Mild and efficient synthesis of trans-3-aryl-2-nitro-2,3-dihydrobenzofurans on water. NEW J CHEM 2020. [DOI: 10.1039/d0nj00548g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A protocol to prepare trans-3-aryl-2-nitro-2,3-dihydrobenzofurans has been developed on water. The protocol avoids the use of toxic solvents, tedious work-up procedures, and chromatographic separation.
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Affiliation(s)
- Juhua Feng
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Siyuan Wang
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Jinxiang Feng
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Qiuju Li
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Junping Yue
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Guizhou Yue
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Ping Zou
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Guangtu Wang
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
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18
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Bera K, Ayyagari N, Satam N, Namboothiri INN. Stereoselective synthesis of hydrazinodihydrofurans via cascade Michael addition-substitution involving the reaction of curcumin and other β-dicarbonyls with α-hydrazinonitroalkenes. Org Biomol Chem 2019; 18:140-153. [PMID: 31803896 DOI: 10.1039/c9ob01974j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Highly diastereoselective synthesis of 2-hydrazinated 2,3-dihydrofurans in good to excellent yields involving an interrupted Feist-Bénary type reaction by treating a wide variety of 1,3-dicarbonyl compounds, including curcumins, with α-hydrazinated nitroalkenes is reported here. The first ever enantioselective reaction of α-hydrazinonitroalkenes has also been carried out with two selected 1,3-dicarbonyls, dimedone and cyclohexanone by employing an l-t-leucine derived squaramide as the chiral organocatalyst to afford the enantio-enriched 2-hydrazinodihydrofurans as single diastereomers in good yields and with good enantioselectivities.
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Affiliation(s)
- Kalisankar Bera
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
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19
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Bao X, Rodriguez J, Bonne D. Bidirectional enantioselective synthesis of bis-benzofuran atropisomeric oligoarenes featuring two distal C-C stereogenic axes. Chem Sci 2019; 11:403-408. [PMID: 32153755 PMCID: PMC7021203 DOI: 10.1039/c9sc04378k] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 11/11/2019] [Indexed: 12/18/2022] Open
Abstract
We report the bidirectional enantioselective synthesis of bis-benzofuran atropisomeric oligoarenes featuring two distal C–C stereogenic axes. These are controlled by a two-fold central-to-axial chirality conversion upon oxidative aromatization.
We report the bidirectional enantioselective synthesis of bis-benzofuran atropisomeric oligoarenes featuring two distal C–C stereogenic axes obtained by a two-fold central-to-axial chirality conversion upon oxidative aromatization. The key enantioenriched centrally chiral bis-dihydrobenzofuran precursors were synthesized via a bidirectional diastereo- and enantio-selective organocatalyzed domino reaction between simple achiral and easily accessible dihydroxylated aromatics and chloronitroalkenes. Moreover, the stereodivergent nature of the methodology was established by synthesizing both diastereomers of a non-symmetrically functionalized bis-axially chiral oligoarene.
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Affiliation(s)
- Xiaoze Bao
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Jean Rodriguez
- Aix Marseille Université , CNRS , Centrale Marseille , iSm2 , Marseille , France . ;
| | - Damien Bonne
- Aix Marseille Université , CNRS , Centrale Marseille , iSm2 , Marseille , France . ;
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20
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Chavan LN, Mainkar PS, Chandrasekhar S. Organocatalytic Asymmetric Synthesis of Tetrahydrofuran and 1,2-Dihydrobenzofuran Scaffolds. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901067] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Lahu N. Chavan
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 201 002 Uttar Pradesh Ghaziabad India
| | - Prathama S. Mainkar
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 201 002 Uttar Pradesh Ghaziabad India
| | - S. Chandrasekhar
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 201 002 Uttar Pradesh Ghaziabad India
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21
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He X, Xie M, Tang Q, Zuo Y, Li R, Shang Y. Catalyst-Free Synthesis of 2,3-Dihydrobenzofurans via a Formal [4+1] Annulation of Propargylamines with Sulfur Ylides. J Org Chem 2019; 84:11623-11638. [DOI: 10.1021/acs.joc.9b01557] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xinwei He
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Mengqing Xie
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Qiang Tang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Youpeng Zuo
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Ruxue Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
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22
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Shan C, Zhang T, Xiong Q, Yan H, Bai R, Lan Y. Hydrogen‐Bond‐Induced Chiral Axis Construction: Theoretical Study of Cinchonine–Thiourea‐Catalyzed Enantioselective Intramolecular Cycloaddition. Chem Asian J 2019; 14:2731-2736. [DOI: 10.1002/asia.201900624] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/10/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Chunhui Shan
- Postdoctoral Station of Biomedical EngineeringChongqing University Chongqing 400030 P.R. China
| | - Tao Zhang
- School of Chemistry and Chemical EngineeringChongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 P.R. China
| | - Qin Xiong
- School of Chemistry and Chemical EngineeringChongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 P.R. China
| | - Hailong Yan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug, ResearchSchool of Pharmaceutical SciencesChongqing University Chongqing 400030 P.R. China
| | - Ruopeng Bai
- School of Chemistry and Chemical EngineeringChongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 P.R. China
| | - Yu Lan
- School of Chemistry and Chemical EngineeringChongqing Key Laboratory of Theoretical and Computational ChemistryChongqing University Chongqing 400030 P.R. China
- College of Chemistry and Molecular EngineeringZhengzhou University Zhengzhou 450001 P.R. China
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23
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Mesa KM, Hibbard HA, Franz AK. Sodium-Catalyzed Friedel–Crafts Reactions and Mechanistic Insight. Org Lett 2019; 21:3877-3881. [DOI: 10.1021/acs.orglett.9b00747] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kelsey M. Mesa
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Hailey A. Hibbard
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Annaliese K. Franz
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
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24
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Heravi MM, Zadsirjan V, Heydari M, Masoumi B. Organocatalyzed Asymmetric Friedel‐Crafts Reactions: An Update. CHEM REC 2019. [DOI: 10.1002/tcr.201800190] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Majid M. Heravi
- Department of ChemistrySchool of ScienceAlzahra University POBox 1993891176, Vanak Tehran Iran Tel.: +98 21 88044051 fax: +98 21 88041344
| | - Vahideh Zadsirjan
- Department of ChemistrySchool of ScienceAlzahra University POBox 1993891176, Vanak Tehran Iran Tel.: +98 21 88044051 fax: +98 21 88041344
| | - Masumeh Heydari
- Department of ChemistrySchool of ScienceAlzahra University POBox 1993891176, Vanak Tehran Iran Tel.: +98 21 88044051 fax: +98 21 88041344
| | - Baharak Masoumi
- Department of ChemistrySchool of ScienceAlzahra University POBox 1993891176, Vanak Tehran Iran Tel.: +98 21 88044051 fax: +98 21 88041344
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25
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Feofanov MN, Averin AD, Beletskaya IP. Friedel–Crafts reaction of electron-rich (het)arenes with nitroalkenes. MENDELEEV COMMUNICATIONS 2019. [DOI: 10.1016/j.mencom.2019.03.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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26
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Heravi MM, Zadsirjan V, Masoumi B, Heydari M. Organometal-catalyzed asymmetric Friedel-Crafts reactions. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.10.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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27
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Mo Y, Liu S, Liu Y, Ye L, Shi Z, Zhao Z, Li X. Highly stereoselective synthesis of 2,3-dihydrofurans via a cascade Michael addition-alkylation process: a nitro group as the leaving group. Chem Commun (Camb) 2019; 55:6285-6288. [PMID: 31086904 DOI: 10.1039/c9cc01509d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The Michael addition-alkylation process between gem-benzoyl-nitrostyrenes and 1,3-dicarbonyl compounds proceeded smoothly in the presence of a bifunctional squaramide, exclusively providing 2,3-dihydrofurans as trans-diastereomers in 33-92% isolated yields and excellent enantioselectivities (29->99% ee).
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Affiliation(s)
- Yiran Mo
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu 610041, China.
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28
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Xiao BX, Gao XY, Du W, Chen YC. Asymmetric Reactions involving Lewis Base Catalyst Tethered Dearomatized Intermediates. Chemistry 2018; 25:1607-1613. [PMID: 30109896 DOI: 10.1002/chem.201803592] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Ben-Xian Xiao
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Xin-Yue Gao
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Wei Du
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
| | - Ying-Chun Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy; Sichuan University; Chengdu 610041 China
- College of Pharmacy; Third Military Medical University; Chongqing 400038 China
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29
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Martín-Sómer A, Arpa EM, Díaz-Tendero S, Alemán J. Intramolecular Hydrogen Bond Activation of Aza-Methylene Imines in Hydrogen Bond Bifunctional Catalysis - A Density Functional Theory Study. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801208] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Ana Martín-Sómer
- Departamento de Química (Módulo 13); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
| | - Enrique M. Arpa
- Departamento de Química (Módulo 13); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
| | - Sergio Díaz-Tendero
- Departamento de Química (Módulo 13); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
- Condensed Matter Physics Center (IFIMAC); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
| | - José Alemán
- Institute for Advanced Research in Chemical Sciences (IAdChem); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
- Organic Chemistry Deparment (modulo 1); Science Faculty; Universidad Autonoma de Madrid; 28049 Madrid Spain
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30
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Zhang XL, Feng KX, Xia AB, Zheng YY, Li C, Du XH, Xu DQ. Asymmetric Synthesis of 2,3-Dihydrofurans by One-Pot Michael Addition/I2
-Mediated Cyclization. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800575] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xiao-Long Zhang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Kai-Xiang Feng
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Ai-Bao Xia
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Ya-Yun Zheng
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Chen Li
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Xiao-Hua Du
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
| | - Dan-Qian Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; 310014 Hangzhou P. R. China
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31
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Rigotti T, Casado-Sánchez A, Cabrera S, Pérez-Ruiz R, Liras M, de la Peña O’Shea VA, Alemán J. A Bifunctional Photoaminocatalyst for the Alkylation of Aldehydes: Design, Analysis, and Mechanistic Studies. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01331] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Thomas Rigotti
- Organic Chemistry Department, Módulo 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Antonio Casado-Sánchez
- Organic Chemistry Department, Módulo 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Silvia Cabrera
- Inorganic Chemistry Department, Módulo 7, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Raúl Pérez-Ruiz
- Photoactivated Processes Unit, IMDEA Energy, Av. Ramón de la Sagra 3, 28935 Móstoles, Madrid, Spain
| | - Marta Liras
- Photoactivated Processes Unit, IMDEA Energy, Av. Ramón de la Sagra 3, 28935 Móstoles, Madrid, Spain
| | | | - José Alemán
- Organic Chemistry Department, Módulo 1, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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32
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Guerrero‐Corella A, Esteban F, Iniesta M, Martín‐Somer A, Parra M, Díaz‐Tendero S, Fraile A, Alemán J. 2-Hydroxybenzophenone as a Chemical Auxiliary for the Activation of Ketiminoesters for Highly Enantioselective Addition to Nitroalkenes under Bifunctional Catalysis. Angew Chem Int Ed Engl 2018; 57:5350-5354. [PMID: 29493860 PMCID: PMC5947601 DOI: 10.1002/anie.201800435] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Indexed: 02/04/2023]
Abstract
An organocatalytic system is presented for the Michael addition of monoactivated glycine ketimine ylides with a bifunctional catalyst. The ketimine bears an ortho hydroxy group, which increases the acidity of the methylene hydrogen atoms and enhances the reactivity, thus allowing the synthesis of a large variety of α,γ-diamino acid derivatives with excellent stereoselectivity.
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Affiliation(s)
| | - Francisco Esteban
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid28049MadridSpain
| | - Manuel Iniesta
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid28049MadridSpain
| | - Ana Martín‐Somer
- Chemistry DepartmentUniversidad Autónoma de Madrid28049MadridSpain
| | - Mario Parra
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid28049MadridSpain
| | - Sergio Díaz‐Tendero
- Chemistry DepartmentUniversidad Autónoma de Madrid28049MadridSpain
- Institute for Advanced Research in Chemical Sciences (IAdChem)Spain
- Condensed Matter Physics Center (IFIMAC)Universidad Autónoma de Madrid28049MadridSpain
| | - Alberto Fraile
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid28049MadridSpain
- Institute for Advanced Research in Chemical Sciences (IAdChem)Spain
| | - Jose Alemán
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid28049MadridSpain
- Institute for Advanced Research in Chemical Sciences (IAdChem)Spain
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33
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Yu SW, Zhao SH, Chen H, Xu XY, Yuan WC, Zhang XM. Construction of Novel Kojic Acid Fused Furans by Domino Reactions of a Kojic Acid Derivative with (Z
)-Bromonitroalkenes. ChemistrySelect 2018. [DOI: 10.1002/slct.201800396] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Shuo-Wen Yu
- Key Laboratory for Asymmetric Synthesis and Chiraltechnology of Sichuan Province; Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Si-Han Zhao
- Key Laboratory for Asymmetric Synthesis and Chiraltechnology of Sichuan Province; Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Hui Chen
- Key Laboratory for Asymmetric Synthesis and Chiraltechnology of Sichuan Province; Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Xiao-Ying Xu
- Key Laboratory for Asymmetric Synthesis and Chiraltechnology of Sichuan Province; Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041 China
| | - Wei-Cheng Yuan
- Key Laboratory for Asymmetric Synthesis and Chiraltechnology of Sichuan Province; Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041 China
| | - Xiao-Mei Zhang
- Key Laboratory for Asymmetric Synthesis and Chiraltechnology of Sichuan Province; Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041 China
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34
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Quinonoid compounds via reactions of lawsone and 2-aminonaphthoquinone with α-bromonitroalkenes and nitroallylic acetates: Structural diversity by C-ring modification and cytotoxic evaluation against cancer cells. Eur J Med Chem 2018; 151:686-704. [DOI: 10.1016/j.ejmech.2018.03.079] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/27/2018] [Accepted: 03/29/2018] [Indexed: 12/17/2022]
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35
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Guerrero-Corella A, Esteban F, Iniesta M, Martín-Somer A, Parra M, Díaz-Tendero S, Fraile A, Alemán J. 2-Hydroxybenzophenone as a Chemical Auxiliary for the Activation of Ketiminoesters for Highly Enantioselective Addition to Nitroalkenes under Bifunctional Catalysis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800435] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Francisco Esteban
- Organic Chemistry Department, Módulo 1; Universidad Autónoma de Madrid; 28049 Madrid Spain
| | - Manuel Iniesta
- Organic Chemistry Department, Módulo 1; Universidad Autónoma de Madrid; 28049 Madrid Spain
| | - Ana Martín-Somer
- Chemistry Department; Universidad Autónoma de Madrid; 28049 Madrid Spain
| | - Mario Parra
- Organic Chemistry Department, Módulo 1; Universidad Autónoma de Madrid; 28049 Madrid Spain
| | - Sergio Díaz-Tendero
- Chemistry Department; Universidad Autónoma de Madrid; 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem); Spain
- Condensed Matter Physics Center (IFIMAC); Universidad Autónoma de Madrid; 28049 Madrid Spain
| | - Alberto Fraile
- Organic Chemistry Department, Módulo 1; Universidad Autónoma de Madrid; 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem); Spain
| | - Jose Alemán
- Organic Chemistry Department, Módulo 1; Universidad Autónoma de Madrid; 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem); Spain
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36
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Giardinetti M, Marrot J, Greck C, Moreau X, Coeffard V. Aminocatalyzed Synthesis of Enantioenriched Phenalene Skeletons through a Friedel–Crafts/Cyclization Strategy. J Org Chem 2018; 83:1019-1025. [PMID: 29261307 DOI: 10.1021/acs.joc.7b02629] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maxime Giardinetti
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, Versailles 78035 Cedex, France
| | - Jérôme Marrot
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, Versailles 78035 Cedex, France
| | - Christine Greck
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, Versailles 78035 Cedex, France
| | - Xavier Moreau
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, Versailles 78035 Cedex, France
| | - Vincent Coeffard
- Institut
Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, 45 Avenue des États-Unis, Versailles 78035 Cedex, France
- Université de Nantes, CNRS, CEISAM, UMR 6230, Faculté
des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, Nantes 44322 Cedex 3, France
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37
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Laina-Martín V, Humbrías-Martín J, Fernández-Salas JA, Alemán J. Asymmetric vinylogous Mukaiyama aldol reaction of isatins under bifunctional organocatalysis: enantioselective synthesis of substituted 3-hydroxy-2-oxindoles. Chem Commun (Camb) 2018; 54:2781-2784. [DOI: 10.1039/c8cc00759d] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A highly enantioselective organocatalytic vinylogous Mukaiyama aldol reaction of silyloxy dienes and isatins under bifunctional organocatalysis is presented.
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Affiliation(s)
- Víctor Laina-Martín
- Departamento de Química Orgánica (Módulo 1)
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- Madrid 28049
- Spain
| | - Jorge Humbrías-Martín
- Departamento de Química Orgánica (Módulo 1)
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- Madrid 28049
- Spain
| | - José A. Fernández-Salas
- Departamento de Química Orgánica (Módulo 1)
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- Madrid 28049
- Spain
| | - José Alemán
- Departamento de Química Orgánica (Módulo 1)
- Facultad de Ciencias
- Universidad Autónoma de Madrid
- Madrid 28049
- Spain
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38
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Cheng Y, Fang Z, Li W, Li P. Phosphine-mediated enantioselective [4 + 1] annulations between ortho-quinone methides and Morita–Baylis–Hillman carbonates. Org Chem Front 2018. [DOI: 10.1039/c8qo00487k] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
First example of phosphine catalyzed enantioselective [4 + 1] annulations of o-QMs and MBH carbonates for chiral 2,3-dihydrobenzofurans.
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Affiliation(s)
- Yuyu Cheng
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Zhiqiang Fang
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
| | - Wenjun Li
- Department of Medicinal Chemistry
- School of Pharmacy
- Qingdao University
- Qingdao
- China
| | - Pengfei Li
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- China
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39
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Wang P, Gao Y, Zhao Y, Liu W, Wang Y. Unveiling Mechanism of a Quinine-Squaramide Catalyzed Enantioselective Aza-Friedel–Crafts Reaction between Cyclic Trifluoromethyl Ketimine and Naphthol: A DFT Study. J Org Chem 2017; 82:13109-13114. [DOI: 10.1021/acs.joc.7b02168] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ping Wang
- College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Yun Gao
- College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Yang Zhao
- College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Wei Liu
- College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Yong Wang
- College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou 215123, PR China
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40
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Wang D, Tong X. Phosphine-Catalyzed Asymmetric (3+2) Annulations of δ-Acetoxy Allenoates with 2-Naphthols. Org Lett 2017; 19:6392-6395. [DOI: 10.1021/acs.orglett.7b03250] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Dong Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Xiaofeng Tong
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
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41
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Kaya U, Chauhan P, Mahajan S, Deckers K, Valkonen A, Rissanen K, Enders D. Squaramide-Catalyzed Asymmetric aza-Friedel-Crafts/N,O-Acetalization Domino Reactions Between 2-Naphthols and Pyrazolinone Ketimines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709224] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Uğur Kaya
- 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
| | - Suruchi Mahajan
- 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
| | - Arto Valkonen
- Department of Chemistry, Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Kari Rissanen
- Department of Chemistry, Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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42
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Kaya U, Chauhan P, Mahajan S, Deckers K, Valkonen A, Rissanen K, Enders D. Squaramide-Catalyzed Asymmetric aza-Friedel-Crafts/N,O-Acetalization Domino Reactions Between 2-Naphthols and Pyrazolinone Ketimines. Angew Chem Int Ed Engl 2017; 56:15358-15362. [DOI: 10.1002/anie.201709224] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Uğur Kaya
- 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
| | - Suruchi Mahajan
- 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
| | - Arto Valkonen
- Department of Chemistry, Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Kari Rissanen
- Department of Chemistry, Nanoscience Center; University of Jyvaskyla; 40014 JYU Finland
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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43
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Cheng Y, Han Y, Li P. Organocatalytic Enantioselective [1 + 4] Annulation of Morita–Baylis–Hillman Carbonates with Electron-Deficient Olefins: Access to Chiral 2,3-Dihydrofuran Derivatives. Org Lett 2017; 19:4774-4777. [DOI: 10.1021/acs.orglett.7b02144] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuyu Cheng
- Department of Chemistry, South University of Science and Technology of China, 1088 Xueyuan Boulevard, Nanshan District, Shenzhen, Guangdong 518055, China
| | - Yuzhe Han
- Department of Chemistry, South University of Science and Technology of China, 1088 Xueyuan Boulevard, Nanshan District, Shenzhen, Guangdong 518055, China
| | - Pengfei Li
- Department of Chemistry, South University of Science and Technology of China, 1088 Xueyuan Boulevard, Nanshan District, Shenzhen, Guangdong 518055, China
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44
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Raut VS, Jean M, Vanthuyne N, Roussel C, Constantieux T, Bressy C, Bugaut X, Bonne D, Rodriguez J. Enantioselective Syntheses of Furan Atropisomers by an Oxidative Central-to-Axial Chirality Conversion Strategy. J Am Chem Soc 2017; 139:2140-2143. [DOI: 10.1021/jacs.6b11079] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Vivek S. Raut
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | - Marion Jean
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | - Christian Roussel
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | | | - Cyril Bressy
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | - Xavier Bugaut
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | - Damien Bonne
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
| | - Jean Rodriguez
- Aix Marseille Univ, CNRS, Centrale
Marseille, iSm2, Marseille, France
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45
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Frias M, Mas-Ballesté R, Arias S, Alvarado C, Alemán J. Asymmetric Synthesis of Rauhut-Currier type Products by a Regioselective Mukaiyama Reaction under Bifunctional Catalysis. J Am Chem Soc 2017; 139:672-679. [PMID: 28004935 DOI: 10.1021/jacs.6b07851] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactivity and the regioselective functionalization of silyl-diene enol ethers under a bifunctional organocatalyst provokes a dramatic change in the regioselectivity, from the 1,5- to the 1,3-functionalization. This variation makes possible the 1,3-addition of silyl-dienol ethers to nitroalkenes, giving access to the synthesis of tri- and tetrasubstituted double bonds in Rauhut-Currier type products. The process takes place under smooth conditions, nonanionic conditions, and with a high enantiomeric excess. A rational mechanistic pathway is presented based on DFT and mechanistic experiments.
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Affiliation(s)
- María Frias
- Department of Organic Chemistry (module 01), Universidad Autónoma de Madrid , Cantoblanco, 28049 Madrid, Spain
| | - Rubén Mas-Ballesté
- Department of Inorganic Chemistry (module 07), Universidad Autónoma de Madrid , 28049 Madrid, Spain
| | - Saira Arias
- División Académica de Ciencias Básicas, Universidad Juárez Autónoma de Tabasco , 86040 Villahermosa, Tabasco, Mexico
| | - Cuauhtemoc Alvarado
- División Académica de Ciencias Básicas, Universidad Juárez Autónoma de Tabasco , 86040 Villahermosa, Tabasco, Mexico
| | - José Alemán
- Department of Organic Chemistry (module 01), Universidad Autónoma de Madrid , Cantoblanco, 28049 Madrid, Spain
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46
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Sun QS, Zhu H, Lin H, Tan Y, Yang XD, Sun XW, Sun X. Dual-organocatalytic Michael/Michael/aldol cascade reaction for the asymmetric construction of fully-substituted cyclohexane. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.11.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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47
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Feng J, Yuan X, Luo W, Lin L, Liu X, Feng X. ChiralN,N′-Dioxide-Organocatalyzed Regio-, Diastereo- and Enantioselective Michael Addition-Alkylation Reaction. Chemistry 2016; 22:15650-15653. [DOI: 10.1002/chem.201603629] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Indexed: 01/04/2023]
Affiliation(s)
- Juhua Feng
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 P. R. China
- College of Science; Sichuan Agricultural University, Ya'an; Sichuan 625014 P. R. China
| | - Xiao Yuan
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 P. R. China
| | - Weiwei Luo
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 P. R. China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 P. R. China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology; Ministry of Education; College of Chemistry; Sichuan University; Chengdu 610064 P. R. China
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48
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Huang K, Ma Q, Shen X, Gong L, Meggers E. Metal-Templated Asymmetric Catalysis: (Z)-1-Bromo-1-Nitrostyrenes as Versatile Substrates for Friedel-Crafts Alkylation of Indoles. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600288] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Kaifang Huang
- Key Laboratory for Chemical Biology of Fujian Province and Department of Chemical Biology; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 People's Republic of China) address
| | - Qiao Ma
- Key Laboratory for Chemical Biology of Fujian Province and Department of Chemical Biology; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 People's Republic of China) address
| | - Xiang Shen
- Key Laboratory for Chemical Biology of Fujian Province and Department of Chemical Biology; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 People's Republic of China) address
| | - Lei Gong
- Key Laboratory for Chemical Biology of Fujian Province and Department of Chemical Biology; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 People's Republic of China) address
| | - Eric Meggers
- Key Laboratory for Chemical Biology of Fujian Province and Department of Chemical Biology; College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 People's Republic of China) address
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Strasse 4 35043 Marburg Germany
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49
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Fang X, Wang Y. (1R,2R)-8-Bromo-1-[(E)-2-(4-bromophenyl)ethenyl]-2-nitro-1,2-dihydronaphtho[2,1-b]furan. IUCRDATA 2016. [DOI: 10.1107/s2414314616005150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The title compound,C20H13Br2NO3, contains the dihydrobenzofuran moiety, which is present in the physiologically active components of many medicinal plants. The naphthyl ring system is nearly perpendicular to the phenyl ring, while the mean plane of the double bond is almost coplanar with the phenyl ring [dihedral angles of 79.14 (3) and 13.56 (1)°, respectively]. The nitro group and bromobenzene alkenyl group aretransto one another on opposite sides of the furan ring. There are two stereogenic centres, and each has theRconfiguration. In the crystal, there are very weak intermolecular C—H...Br interactions.
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50
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Han X, Zhou HB, Dong C. Applications of Chiral Squaramides: From Asymmetric Organocatalysis to Biologically Active Compounds. CHEM REC 2016; 16:897-906. [DOI: 10.1002/tcr.201500266] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Xin Han
- State Key Laboratory of Virology; Laboratory of Combinatorial Biosynthesis and Drug Discovery Ministry of Education Wuhan University School of Pharmaceutical Sciences; Wuhan 430071 P. R. China
| | - Hai-Bing Zhou
- State Key Laboratory of Virology; Laboratory of Combinatorial Biosynthesis and Drug Discovery Ministry of Education Wuhan University School of Pharmaceutical Sciences; Wuhan 430071 P. R. China
| | - Chune Dong
- State Key Laboratory of Virology; Laboratory of Combinatorial Biosynthesis and Drug Discovery Ministry of Education Wuhan University School of Pharmaceutical Sciences; Wuhan 430071 P. R. China
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences; Shanghai 200032 P. R. China
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