1
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Chinta BS, Sneddon DS, Hoye TR. Cascade reactions of HDDA-benzynes with tethered cyclohexadienones: strain-driven events originating from ortho-annulated benzocyclobutenes. Chem Sci 2024; 15:8181-8189. [PMID: 38817592 PMCID: PMC11134320 DOI: 10.1039/d4sc00571f] [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: 01/24/2024] [Accepted: 04/16/2024] [Indexed: 06/01/2024] Open
Abstract
Intramolecular net [2 + 2] cycloadditions between benzyne intermediates and an electron-deficient alkene to give benzocyclobutene intermediates are relatively rare. Benzynes are electrophilic and generally engage nucleophiles or electron-rich π-systems. We describe here reactions in which an alkene of a tethered enone traps thermally generated benzynes in a variety of interesting ways. The number of atoms that link the benzyne to C4 of a cyclohexa-2,5-dienone induces varying amounts of strain in the intermediates and products. This leads to a variety of different reaction outcomes by way of various strain-releasing events that are mechanistically intriguing. This work demonstrates an underappreciated class of strain that originates from the adjacent fusion of two rings to both C1-C2 and C2-C3 of a benzenoid ring - i.e. 'ortho-annulation strain'. DFT computations shed considerable light on the mechanistic diversions among various reaction pathways as well as allow more fundamental evaluation of the strain in a homologous series of ortho-annulated carbocycles.
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Affiliation(s)
- Bhavani Shankar Chinta
- Department of Chemistry, University of Minnesota 207 Pleasant St. SE Minneapolis MN 55455 USA
| | - Dorian S Sneddon
- Department of Chemistry, University of Minnesota 207 Pleasant St. SE Minneapolis MN 55455 USA
| | - Thomas R Hoye
- Department of Chemistry, University of Minnesota 207 Pleasant St. SE Minneapolis MN 55455 USA
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2
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Chen X, Li M, Liu Z, Yang C, Xie H, Hu X, Su SJ, Jiang H, Zeng W. Bimetal Cooperatively Catalyzed Arylalkynylation of Alkynylsilanes. Org Lett 2021; 23:6724-6728. [PMID: 34397220 DOI: 10.1021/acs.orglett.1c02283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An unprecedented Pd/Rh cooperatively catalyzed arylalkynylation of alkynylsilanes was developed to merge an alkynylidene moiety with benzosilacycle. These silaarenes possess a particular aggregation-induced emission behavior. Mechanistic investigations demonstrate that the relay trimetallic transmetalation plays a pivotal role in governing this transformation.
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Affiliation(s)
- Xing Chen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Mengke Li
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510641, China
| | - Zhipeng Liu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Can Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Haisheng Xie
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Xinwei Hu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Shi-Jian Su
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510641, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Wei Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
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3
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Cheng C, Zhang Y. Palladium-Catalyzed anti-Carbosilylation of Alkynes to Access Isoquinolinone-Containing Exocyclic Vinylsilanes. Org Lett 2021; 23:5772-5776. [PMID: 34259535 DOI: 10.1021/acs.orglett.1c01931] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A Pd-catalyzed trans-selective carbosilylation reaction of alkynes has been developed. The trans-vinylpalladium species, generated through intramolecular syn-carbopalladation of alkynes and subsequent cis-trans isomerization, were captured by hexamethyldisilane to form multisubstituted vinylsilanes. This reaction provides a useful strategy for the stereoselective synthesis of isoquinolinone-containing exocyclic tetrasubstituted vinylsilanes.
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Affiliation(s)
- Cang Cheng
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University 1239 Siping Road, Shanghai 200092, China
| | - Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University 1239 Siping Road, Shanghai 200092, China
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4
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Mondal S, Ballav T, Biswas K, Ghosh S, Ganesh V. Exploiting the Versatility of Palladium Catalysis: A Modern Toolbox for Cascade Reactions. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100312] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Sourav Mondal
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721 302 West Bengal India
| | - Tamal Ballav
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721 302 West Bengal India
| | - Krishna Biswas
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721 302 West Bengal India
| | - Suman Ghosh
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721 302 West Bengal India
| | - Venkataraman Ganesh
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur 721 302 West Bengal India
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5
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Zhang Y, Yang Y, Xue Y. Elucidating the mechanism and origins of selectivity on catalyst-dependent cyclization reactions to form polycyclic indolines from a theoretical study. RSC Adv 2021; 11:20622-20634. [PMID: 35479382 PMCID: PMC9033988 DOI: 10.1039/d1ra01632f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 06/02/2021] [Indexed: 11/30/2022] Open
Abstract
There is a significant role for bioactive polycyclic indolines in the pharmaceutical science field. In this paper, a systematic DFT study at the M06-D3/SMD/BS2//B3LYP-D3/BS1 level is adopted to investigate the cyclization reaction catalyzed by Rh2(esp)2 and InCl3 to generate polycyclic indolines. Luckily, the simplification of the Rh2(esp)2 computational model is feasible, and successfully used in this study. The computational results detailed indicate the reaction mechanisms catalyzed by different catalysts, and the regio- and diastereo-selectivity. The regio-selectivity is controlled by the weak interaction (reflected in repulsive interaction) of the key transition state in the InCl3-catalyzed pathway, and the larger distortion energy makes the regio-selectivity more obvious in the pathway catalyzed by Rh2(esp)2. It is important that this theoretical study suggests the significance of the catalyst in the reaction system in detail by NBO and FMO analysis. This paper is a good explanation of the experimental phenomenon caused by the catalyst where InCl3 is more significant than Rh2(esp)2. The reaction mechanism and the importance of the catalysts are revealed in detail by this particular theoretical study. The mechanism and origins of selectivities of multiply catalyzed cyclization reactions catalyzed by Rh2(esp)2 and InCl3 are investigated by DFT calculations as well as distortion/interaction and noncovalent interaction (NCI) analyses.![]()
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Affiliation(s)
- Yan Zhang
- College of Chemistry
- Key Lab of Green Chemistry and Technology in Ministry of Education
- Sichuan University
- Chengdu 610064
- People's Republic of China
| | - Yongsheng Yang
- College of Chemistry
- Key Lab of Green Chemistry and Technology in Ministry of Education
- Sichuan University
- Chengdu 610064
- People's Republic of China
| | - Ying Xue
- College of Chemistry
- Key Lab of Green Chemistry and Technology in Ministry of Education
- Sichuan University
- Chengdu 610064
- People's Republic of China
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6
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Tobrman T, Edlová T, Čubiňák M. Cross-Coupling Reactions of Double or Triple Electrophilic Templates for Alkene Synthesis. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707270] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractThis short review summarizes the latest advances in the cross-coupling reactions of double and triple electrophilic templates bearing halogen atoms and an activated C–O bond. Reactions involving the formation of a C–C bond as part of di-, tri-, and tetrasubstituted double bond systems are highlighted.1 Introduction2 Cross-Coupling Reactions of Halovinyl Tosylates3 Cross-Coupling Reactions of Halovinyl Triflates4 Cross-Coupling Reactions of Halovinyl Phosphates5 Cross-Coupling Reactions of Halovinyl Esters6 Conclusion
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7
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Reding A, Ohta N, Sebrantke P, Jones PG, Nakao Y, Werz DB. Intramolecular
trans
‐Carbocarbonation of Carbon‐Carbon Triple Bonds by an
anti
‐Carbopalladation/Suzuki Coupling Cascade. ChemCatChem 2020. [DOI: 10.1002/cctc.202000545] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Andreas Reding
- Technische Universität BraunschweigInstitute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Naoki Ohta
- Department of Material ChemistryGraduate School of EngineeringKyoto University Katsura, Nishikyo-ku, Kyoto 615-8510 Japan
| | - Philip Sebrantke
- Technische Universität BraunschweigInstitute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Peter G. Jones
- Technische Universität BraunschweigInstitute of Inorganic and Analytical Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Yoshiaki Nakao
- Department of Material ChemistryGraduate School of EngineeringKyoto University Katsura, Nishikyo-ku, Kyoto 615-8510 Japan
| | - Daniel B. Werz
- Technische Universität BraunschweigInstitute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
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8
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Bürger M, Loch MN, Jones PG, Werz DB. From 1,2-difunctionalisation to cyanide-transfer cascades - Pd-catalysed cyanosulfenylation of internal (oligo)alkynes. Chem Sci 2019; 11:1912-1917. [PMID: 34123284 PMCID: PMC8148069 DOI: 10.1039/c9sc04569d] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Internal alkynes substituted by aliphatic or aromatic moieties or by heteroatoms were converted into sulphur-substituted acrylonitrile derivatives. Key is the use of Pd catalysis, which allows the addition of aromatic and aliphatic thiocyanates in an intra- and intermolecular manner. Substrates with several alkyne units underwent further carbopalladation steps after the initial thiopalladation step, thus generating in a cascade-like fashion an oligoene unit with sulphur at one terminus and the cyano group at the other. The intra- and intermolecular Pd-catalysed cyanosulfenylation of internal alkynes enables the formation of tetrasubstituted thioacrylonitriles and is extended to oligoyne systems leading to oligoenes and a cyanide transfer over four or six atoms.![]()
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Affiliation(s)
- Marcel Bürger
- Technische Universität Braunschweig, Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Maximilian N Loch
- Technische Universität Braunschweig, Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Peter G Jones
- Technische Universität Braunschweig, Institute of Inorganic and Analytical Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Daniel B Werz
- Technische Universität Braunschweig, Institute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
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9
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Reding A, Jones PG, Werz DB. Intramolecular trans-Carbocarbonation of Internal Alkynes by a Cascade of Formal anti-Carbopalladation/Cyclopropanol Opening. Org Lett 2018; 20:7266-7269. [PMID: 30398882 DOI: 10.1021/acs.orglett.8b03179] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An intramolecular cascade reaction consisting of a formal anti-carbopalladation terminated by the ring-opening of a cyclopropanol unit is presented. The products, which involve tetrasubstituted alkene units embedded in an oligocyclic ring system, are generated in moderate to excellent yield. The opening of the cyclopropanol unit leads to a keto group in the γ-position to the emerging double bond.
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10
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Schitter T, Jones PG, Werz DB. Intramolecular Pd-Catalyzed Formal anti-Carboalkoxylation of Alkynes: Access to Tetrasubstituted Enol Ethers. Chemistry 2018; 24:13446-13449. [PMID: 30035827 DOI: 10.1002/chem.201803721] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Indexed: 11/11/2022]
Abstract
An intramolecular Pd-catalyzed formal anti-carboalkoxylation reaction is presented that provides access to tetrasubstituted enol ethers. The key to success is a cascade consisting of a formal anti-carbopalladation of a carbon-carbon triple bond followed by a nucleophilic attack of a hydroxy group at the emerging vinyl organopalladium species. The desired transformation proceeded smoothly with primary, secondary, and tertiary alcohols, and even with phenols. Depending on the substitution pattern of the enol ethers, a further Tsuji-Trost-type step may occur resulting in oligocyclic ketals.
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Affiliation(s)
- Theresa Schitter
- Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106, Braunschweig, Germany
| | - Peter G Jones
- Technische Universität Braunschweig, Institute of Inorganic and Analytical Chemistry, Hagenring 30, 38106, Braunschweig, Germany
| | - Daniel B Werz
- Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106, Braunschweig, Germany
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11
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Reding A, Jones PG, Werz DB. trans
‐Carbocarbonation of Internal Alkynes through a Formal
anti
‐Carbopalladation/C−H Activation Cascade. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805399] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Andreas Reding
- Technische Universität BraunschweigInstitute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Peter G. Jones
- Technische Universität BraunschweigInstitute of Inorganic and Analytical Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Daniel B. Werz
- Technische Universität BraunschweigInstitute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
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12
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Reding A, Jones PG, Werz DB. trans-Carbocarbonation of Internal Alkynes through a Formal anti-Carbopalladation/C-H Activation Cascade. Angew Chem Int Ed Engl 2018; 57:10610-10614. [PMID: 29846035 DOI: 10.1002/anie.201805399] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 05/30/2018] [Indexed: 11/06/2022]
Abstract
An intramolecular Pd-catalyzed cascade reaction is presented that consists of a formal anti-carbopalladation of a C-C triple bond followed by C-H activation. As a result, oligocyclic ring systems with an embedded tetrasubstituted double bond are formed. The key to success in affording the trans geometry of the emerging double bond are alkyne units with residues that must not undergo β-hydride elimination (e.g., t-butyl or silyl groups). Silyl groups proved to be a perfect handle to further convert the tetrasubstituted alkenes. The evaluation of kinetic data with a deuterium-labeled compound and X-ray analyses of trapped intermediates provided additional insight into the catalytic cycle.
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Affiliation(s)
- Andreas Reding
- Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106, Braunschweig, Germany
| | - Peter G Jones
- Technische Universität Braunschweig, Institute of Inorganic and Analytical Chemistry, Hagenring 30, 38106, Braunschweig, Germany
| | - Daniel B Werz
- Technische Universität Braunschweig, Institute of Organic Chemistry, Hagenring 30, 38106, Braunschweig, Germany
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13
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Blouin S, Pertschi R, Schoenfelder A, Suffert J, Blond G. Molecular Diversity of Cyclooctatetraenes through Palladium-Catalyzed Cascade Reactions. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800110] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sarah Blouin
- Université de Strasbourg, CNRS; LIT UMR 7200 F-67000 Strasbourg France
| | - Romain Pertschi
- Université de Strasbourg, CNRS; LIT UMR 7200 F-67000 Strasbourg France
| | | | - Jean Suffert
- Université de Strasbourg, CNRS; LIT UMR 7200 F-67000 Strasbourg France
| | - Gaëlle Blond
- Université de Strasbourg, CNRS; LIT UMR 7200 F-67000 Strasbourg France
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14
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Chaubet G, Goh SS, Mohammad M, Gockel B, Cordonnier MA, Baars H, Phillips AW, Anderson EA. Total Synthesis of the Schisandraceae Nortriterpenoid Rubriflordilactone A. Chemistry 2017; 23:14080-14089. [PMID: 28768051 PMCID: PMC5656881 DOI: 10.1002/chem.201703229] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Indexed: 01/31/2023]
Abstract
Full details of the total synthesis of the Schisandraceae nortriterpenoid natural product rubriflordilactone A are reported. Palladium- and cobalt-catalyzed polycyclizations were employed as key strategies to construct the central pentasubstituted arene from bromoendiyne and triyne precursors. This required the independent assembly of two AB ring aldehydes for combination with a common diyne component. A number of model systems were explored to investigate these two methodologies, and also to establish routes for the installation of the challenging benzopyran and butenolide rings.
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Affiliation(s)
- Guilhem Chaubet
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Shermin S. Goh
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Mujahid Mohammad
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Birgit Gockel
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | | | - Hannah Baars
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Andrew W. Phillips
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Edward A. Anderson
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
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15
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Wagner P, Gulea M, Suffert J, Donnard M. Synthesis of Benzo[c
]silole Derivatives Bearing a Tetrasubstituted Exocyclic C=C Double Bond by Palladium-Catalyzed Domino Reactions. Chemistry 2017; 23:7458-7462. [DOI: 10.1002/chem.201701736] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Indexed: 01/29/2023]
Affiliation(s)
- Patrick Wagner
- Université de Strasbourg; CNRS (LIT UMR 7200); 67000 Strasbourg France
| | - Mihaela Gulea
- Université de Strasbourg; CNRS (LIT UMR 7200); 67000 Strasbourg France
| | - Jean Suffert
- Université de Strasbourg; CNRS (LIT UMR 7200); 67000 Strasbourg France
| | - Morgan Donnard
- Université de Strasbourg; CNRS (LIT UMR 7200); 67000 Strasbourg France
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16
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Boon BA, Green AG, Liu P, Houk KN, Merlic CA. Using Ring Strain to Control 4π-Electrocyclization Reactions: Torquoselectivity in Ring Closing of Medium-Ring Dienes and Ring Opening of Bicyclic Cyclobutenes. J Org Chem 2017; 82:4613-4624. [DOI: 10.1021/acs.joc.7b00203] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Byron A. Boon
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Aaron G. Green
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Peng Liu
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260-3900, United States
| | - K. N. Houk
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Craig A. Merlic
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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17
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Milde B, Pawliczek M, Jones PG, Werz DB. Enantioselective Total Synthesis of (+)-Lysergol: A Formal anti-Carbopalladation/Heck Cascade as the Key Step. Org Lett 2017; 19:1914-1917. [PMID: 28357872 DOI: 10.1021/acs.orglett.7b00675] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The enantioselective synthesis of (+)-lysergol was completed in 12 steps and an overall yield of 13% starting from a known literature precursor. The key step relies on a domino reaction containing a formal anti-carbopalladation, which is terminated by a β-silyl-directed Heck reaction. During this transformation, the two six-membered rings of the ergot scaffold are formed in a completely stereospecific manner.
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Affiliation(s)
- Bastian Milde
- Institut für Organische Chemie and ‡Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig , Hagenring 30, 38106 Braunschweig, Germany
| | - Martin Pawliczek
- Institut für Organische Chemie and ‡Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig , Hagenring 30, 38106 Braunschweig, Germany
| | - Peter G Jones
- Institut für Organische Chemie and ‡Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig , Hagenring 30, 38106 Braunschweig, Germany
| | - Daniel B Werz
- Institut für Organische Chemie and ‡Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig , Hagenring 30, 38106 Braunschweig, Germany
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18
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Ghosh T. Regioselective access of alkylidendibenzo[c,f]oxocine framework via cyclocarbopalladation/cross-coupling cascade reactions and reductive Heck strategy. NEW J CHEM 2017. [DOI: 10.1039/c6nj03825e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium-catalyzed dual strategies of cascade cyclocarbopalladation/cross-coupling of alkynes and a reductive Heck reaction have been developed to construct dibenzo[c,f]oxocine frameworks with tri- and tetra-substituted exo-cyclic alkenes with high stereo- and regio-control.
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Affiliation(s)
- Tapas Ghosh
- Institute of Organic Chemistry
- University of Würzburg
- 97074 Würzburg
- Germany
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19
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Düfert A, Werz DB. Carbopalladation Cascades Using Carbon-Carbon Triple Bonds: Recent Advances to Access Complex Scaffolds. Chemistry 2016; 22:16718-16732. [PMID: 27667738 DOI: 10.1002/chem.201603044] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Indexed: 12/13/2022]
Abstract
Alkynes are one of the most versatile functional groups as synthetic handles. They allow for a direct access to partially or fully substituted alkenes through difunctionalization reactions. A prominently utilized transformation for these sequences is the carbopalladation of alkynes, which can be followed by various termination steps such as aromatizations, dearomatizations, cross-coupling reactions, or pericyclic processes, amongst others. This Minireview provides an overview of the recent literature published in the field of carbopalladation chemistry, both with a focus on methodology as well as its application in the syntheses of complex molecular scaffolds, natural products, and functional molecules.
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Affiliation(s)
| | - Daniel B Werz
- Technische Universität Braunschweig, Institut für Organische Chemie, Hagenring 30, 38106, Braunschweig, Germany
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20
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Bai L, Yuan Y, Liu J, Wu J, Han L, Wang H, Wang Y, Luan X. Palladium(0)-Catalyzed Intermolecular Carbocyclization of (1,n)-Diynes and Bromophenols: An Efficient Route to Tricyclic Scaffolds. Angew Chem Int Ed Engl 2016; 55:6946-50. [PMID: 27144944 DOI: 10.1002/anie.201601570] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Indexed: 12/20/2022]
Abstract
A novel palladium(0)-catalyzed dearomative cyclization reaction of bromophenols with (1,n)-diynes has been developed for building two new types of tricyclic architectures containing a quaternary carbon center. This method employs inexpensive bromophenols, and easily accessible tethered diynes. It exhibits a broad substrate scope and tolerates various functional groups. Preliminary results with commercially available chiral ligands indicate that enantioselective variants are feasible for both cyclization processes.
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Affiliation(s)
- Lu Bai
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Yini Yuan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Jingjing Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Jiaoyu Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Lingbo Han
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Hui Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Yaoyu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China
| | - Xinjun Luan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, China. .,State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin, 300071, China.
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21
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Blouin S, Gandon V, Blond G, Suffert J. Synthesis of Cyclooctatetraenes through a Palladium-Catalyzed Cascade Reaction. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602586] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sarah Blouin
- Université de Strasbourg; Faculté de Pharmacie, UMR 7200 CNRS/UDS; 74 Route du Rhin 67401 Illkirch-Graffenstaden France
| | - Vincent Gandon
- ICMMO, CNRS UMR 8182, Univ. Paris-Sud; Université Paris-Saclay; bâtiment 420 91405 Orsay cedex France
- ICSN, CNRS UPR 2301, Univ. Paris-Sud; Université Paris-Saclay; 91198 Gif-sur-Yvette France
| | - Gaëlle Blond
- Université de Strasbourg; Faculté de Pharmacie, UMR 7200 CNRS/UDS; 74 Route du Rhin 67401 Illkirch-Graffenstaden France
| | - Jean Suffert
- Université de Strasbourg; Faculté de Pharmacie, UMR 7200 CNRS/UDS; 74 Route du Rhin 67401 Illkirch-Graffenstaden France
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22
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Blouin S, Gandon V, Blond G, Suffert J. Synthesis of Cyclooctatetraenes through a Palladium-Catalyzed Cascade Reaction. Angew Chem Int Ed Engl 2016; 55:7208-11. [PMID: 27135905 DOI: 10.1002/anie.201602586] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Sarah Blouin
- Université de Strasbourg; Faculté de Pharmacie, UMR 7200 CNRS/UDS; 74 Route du Rhin 67401 Illkirch-Graffenstaden France
| | - Vincent Gandon
- ICMMO, CNRS UMR 8182, Univ. Paris-Sud; Université Paris-Saclay; bâtiment 420 91405 Orsay cedex France
- ICSN, CNRS UPR 2301, Univ. Paris-Sud; Université Paris-Saclay; 91198 Gif-sur-Yvette France
| | - Gaëlle Blond
- Université de Strasbourg; Faculté de Pharmacie, UMR 7200 CNRS/UDS; 74 Route du Rhin 67401 Illkirch-Graffenstaden France
| | - Jean Suffert
- Université de Strasbourg; Faculté de Pharmacie, UMR 7200 CNRS/UDS; 74 Route du Rhin 67401 Illkirch-Graffenstaden France
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23
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Bai L, Yuan Y, Liu J, Wu J, Han L, Wang H, Wang Y, Luan X. Palladium(0)-Catalyzed Intermolecular Carbocyclization of (1,n)-Diynes and Bromophenols: An Efficient Route to Tricyclic Scaffolds. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601570] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Lu Bai
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education; College of Chemistry & Materials Science; Northwest University; Xi'an 710127 China
| | - Yini Yuan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education; College of Chemistry & Materials Science; Northwest University; Xi'an 710127 China
| | - Jingjing Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education; College of Chemistry & Materials Science; Northwest University; Xi'an 710127 China
| | - Jiaoyu Wu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education; College of Chemistry & Materials Science; Northwest University; Xi'an 710127 China
| | - Lingbo Han
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education; College of Chemistry & Materials Science; Northwest University; Xi'an 710127 China
| | - Hui Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education; College of Chemistry & Materials Science; Northwest University; Xi'an 710127 China
| | - Yaoyu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education; College of Chemistry & Materials Science; Northwest University; Xi'an 710127 China
| | - Xinjun Luan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education; College of Chemistry & Materials Science; Northwest University; Xi'an 710127 China
- State Key Laboratory of Elemento-organic Chemistry; Nankai University; Tianjin 300071 China
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24
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Kothandaraman P, Zhao Y, Lee BR, Le Ng CJ, Lee JY, Ayers BJ, Chan PWH. Gold‐Catalyzed Aminoalkenylation of β‐Amino‐1,
n
‐Diynols to Cycloalkyl‐, Piperidinyl‐ and Pyranyl‐Fused Pyrroles. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600011] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Prasath Kothandaraman
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Yichao Zhao
- School of Chemistry Monash University Clayton, Victoria 3800 Australia
| | - Bo Ra Lee
- School of Chemistry Monash University Clayton, Victoria 3800 Australia
| | - Clarrisa Jia Le Ng
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Jun Yi Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Benjamin James Ayers
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
| | - Philip Wai Hong Chan
- School of Chemistry Monash University Clayton, Victoria 3800 Australia
- Department of Chemistry University of Warwick Coventry CV4 7AL U.K
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25
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Goh SS, Chaubet G, Gockel B, Cordonnier MCA, Baars H, Phillips AW, Anderson EA. Total Synthesis of (+)-Rubriflordilactone A. Angew Chem Int Ed Engl 2015; 54:12618-21. [PMID: 26337920 PMCID: PMC4643188 DOI: 10.1002/anie.201506366] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Indexed: 11/16/2022]
Abstract
Two enantioselective total syntheses of the nortriterpenoid natural product rubriflordilactone A are described, which use palladium- or cobalt-catalyzed cyclizations to form the CDE rings, and converge on a late-stage synthetic intermediate. These key processes are set up through the convergent coupling of a common diyne component with appropriate AB-ring aldehydes, a strategy that sets the stage for the synthetic exploration of other members of this family of natural products.
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Affiliation(s)
- Shermin S Goh
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
| | - Guilhem Chaubet
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
| | - Birgit Gockel
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
| | | | - Hannah Baars
- Institute of Organic Chemistry, RWTH Aachen UniversityLandoltweg 1, 52074 Aachen (Germany)
| | - Andrew W Phillips
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
| | - Edward A Anderson
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
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26
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Milde B, Leibeling M, Hecht A, Jones PG, Visscher A, Stalke D, Grunenberg J, Werz DB. Oligoene‐Based π‐Helicenes or Dispiranes? Winding up Oligoyne Chains by a Multiple Carbopalladation/Stille/(Electrocyclization) Cascade. Chemistry 2015; 21:16136-46. [PMID: 26403640 DOI: 10.1002/chem.201501797] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Bastian Milde
- Institut für Organische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig (Germany)
| | - Markus Leibeling
- Institut für Organische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig (Germany)
| | - Alexander Hecht
- Institut für Anorganische Chemie, Georg‐August‐Universität Göttingen, Tammannstraße 4, 37077 Göttingen (Germany)
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig (Germany)
| | - Arne Visscher
- Institut für Anorganische Chemie, Georg‐August‐Universität Göttingen, Tammannstraße 4, 37077 Göttingen (Germany)
| | - Dietmar Stalke
- Institut für Anorganische Chemie, Georg‐August‐Universität Göttingen, Tammannstraße 4, 37077 Göttingen (Germany)
| | - Jörg Grunenberg
- Institut für Organische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig (Germany)
| | - Daniel B. Werz
- Institut für Organische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig (Germany)
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27
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Goh SS, Chaubet G, Gockel B, Cordonnier MCA, Baars H, Phillips AW, Anderson EA. Totalsynthese von (+)-Rubriflordilacton A. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506366] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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28
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Cao C, Wang W, Zhang F, Huang N, Zou K. TMSCl Promoted Direct sp3C-H Alkenylation to Construct (E)-2-Styryl-tetrahydrobenzo[d]thiazoles. CHINESE J CHEM 2015. [DOI: 10.1002/cjoc.201500341] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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29
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Naveen K, Muralidharan D, Perumal PT. Synthesis of Tetrasubstituted Olefins by Palladium-Catalyzed Double Heck Cyclization of Bromoenynes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301806] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Cordonnier MCA, Kan SBJ, Gockel B, Goh SS, Anderson EA. Carbopalladation of bromoene-alkynylsilanes: mechanistic insights and synthesis of fused-ring bicyclic silanes and phenols. Org Chem Front 2014. [DOI: 10.1039/c4qo00123k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Palladium-catalyzed cyclizations of silylated bromoenynes lead to bicyclic cyclohexadienes that are precursors to enones and phenols. Novel cyclization pathways and mechanistic insights are also disclosed.
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Affiliation(s)
| | | | - Birgit Gockel
- Chemistry Research Laboratory
- University of Oxford
- Oxford, UK
| | - Shermin S. Goh
- Chemistry Research Laboratory
- University of Oxford
- Oxford, UK
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31
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Luo Y, Pan X, Yu X, Wu J. Double carbometallation of alkynes: an efficient strategy for the construction of polycycles. Chem Soc Rev 2014; 43:834-46. [DOI: 10.1039/c3cs60313j] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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32
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Aziz J, Frison G, Le Menez P, Brion JD, Hamze A, Alami M. GoldversusPalladium: A Regioselective Cycloisomerization of Aromatic Enynes. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300746] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Wallbaum J, Neufeld R, Stalke D, Werz DB. A Domino Approach to Dibenzopentafulvalenes by Quadruple Carbopalladation. Angew Chem Int Ed Engl 2013; 52:13243-6. [DOI: 10.1002/anie.201307793] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Indexed: 11/08/2022]
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34
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Wallbaum J, Neufeld R, Stalke D, Werz DB. Ein Dominoprozess zu Dibenzopentafulvalenen mittels vierfacher Carbopalladierung. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307793] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Charpenay M, Boudhar A, Hulot C, Blond G, Suffert J. Expeditious cascade reactions: controlled syntheses of fenestradienes and cyclooctatrienes under palladium catalysis. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.089] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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36
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Facile and controllable synthesis of multiply substituted benzenes via a formal [3+3] cycloaddition approach. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.10.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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37
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Literature Survey Part A: Transition Metal-Catalyzed Reactions. MICROWAVES IN ORGANIC AND MEDICINAL CHEMISTRY 2012. [DOI: 10.1002/9783527647828.ch5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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38
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Jiang H, Pan X, Huang L, Zhao J, Shi D. Synthesis of 4H-cyclopenta[c]furans via cooperative PdCl2–FeCl2 catalyzed cascade cyclization reaction involving a novel acyl rearrangement process. Chem Commun (Camb) 2012; 48:4698-700. [DOI: 10.1039/c2cc31138k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Vlaar T, Ruijter E, Orru RVA. Recent Advances in Palladium-Catalyzed Cascade Cyclizations. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201000979] [Citation(s) in RCA: 225] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Petrignet J, Boudhar A, Blond G, Suffert J. Step-economical synthesis of taxol-like tricycles through a palladium-catalyzed domino reaction. Angew Chem Int Ed Engl 2011; 50:3285-9. [PMID: 21381167 DOI: 10.1002/anie.201007751] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Indexed: 11/11/2022]
Affiliation(s)
- Julien Petrignet
- Faculté de Pharmacie, Université de Strasbourg, UMR 7200 CNRS/UDS, 74 Route du Rhin, Strasbourg, France
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41
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Petrignet J, Boudhar A, Blond G, Suffert J. Step-Economical Synthesis of Taxol-like Tricycles through a Palladium-Catalyzed Domino Reaction. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007751] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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42
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Guerrero M, Pons J, Ros J. Effect of N1-substituted pyrazolic hybrid ligands on palladium catalysts for the Heck reaction. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2010.05.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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43
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Jones AL, Snyder JK. Synthesis of unique scaffolds via Diels-Alder cycloadditions of tetrasubstituted cyclohexadienes. Org Lett 2010; 12:1592-5. [PMID: 20210307 PMCID: PMC2851182 DOI: 10.1021/ol100318f] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diels-Alder cycloadditions of highly substituted cyclohexadienes derived from rhodium-mediated [2 + 2 + 2] cyclizations are reported. Reactive heterodienophiles, including singlet oxygen ((1)O(2)), 4-substituted-1,2,4-triazoline-3,5-diones (TADs), and aryl- and acylnitroso compounds were employed, yielding novel heterocyclic products.
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Affiliation(s)
- Amanda L. Jones
- Department of Chemistry and the Center for Chemical Methodology and Library, Development (CMLD-BU), Boston University, Boston, Massachusetts 02215
| | - John K. Snyder
- Department of Chemistry and the Center for Chemical Methodology and Library, Development (CMLD-BU), Boston University, Boston, Massachusetts 02215
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44
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Leibeling M, Koester DC, Pawliczek M, Schild SC, Werz DB. Domino access to highly substituted chromans and isochromans from carbohydrates. Nat Chem Biol 2010; 6:199-201. [DOI: 10.1038/nchembio.302] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2009] [Accepted: 11/28/2009] [Indexed: 01/10/2023]
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45
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Huang X, Zhu S, Shen R. Palladium-Catalyzed Sequential Reactions via Allene Intermediates for the Rapid Synthesis of Fused Polycyclic Pyrrole Derivatives. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900503] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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46
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Shen R, Zhu S, Huang X. Unexpected Pd-Catalyzed Coupling, Propargyl−Allenyl Isomerization and Alder−Ene Reaction: Facile Synthesis of Some Not Readily Available 2,3-Dihydrofuran Derivatives. J Org Chem 2009; 74:4118-23. [DOI: 10.1021/jo900440u] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ruwei Shen
- Department of Chemistry, Zhejiang University, Xixi Campus, Hangzhou 310028, P. R. China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
| | - Shugao Zhu
- Department of Chemistry, Zhejiang University, Xixi Campus, Hangzhou 310028, P. R. China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
| | - Xian Huang
- Department of Chemistry, Zhejiang University, Xixi Campus, Hangzhou 310028, P. R. China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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47
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Kappe CO, Dallinger D. Controlled microwave heating in modern organic synthesis: highlights from the 2004–2008 literature. Mol Divers 2009; 13:71-193. [PMID: 19381851 DOI: 10.1007/s11030-009-9138-8] [Citation(s) in RCA: 292] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Accepted: 02/27/2009] [Indexed: 01/25/2023]
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48
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Jones AL, Snyder JK. Intramolecular rhodium-catalyzed [2+2+2] cyclizations of diynes with enones. J Org Chem 2009; 74:2907-10. [PMID: 19281162 PMCID: PMC2739116 DOI: 10.1021/jo9001678] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Rh(I)-catalyzed inter- and intramolecular [2+2+2] cyclization of diynes with alpha,beta-unsaturated enones proceeds with microwave promotion in good yields. This chemistry was applied to the synthesis of (-)-alcyopterosin I.
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Affiliation(s)
- Amanda L. Jones
- Center for Chemical Methodology and Library Development, and the Department of Chemistry, Boston University, 590 Commonwealth Ave., Boston, Massachusetts, 02215
| | - John K. Snyder
- Center for Chemical Methodology and Library Development, and the Department of Chemistry, Boston University, 590 Commonwealth Ave., Boston, Massachusetts, 02215
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49
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Affiliation(s)
- Tsuyoshi Taniguchi
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Hisaaki Zaimoku
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Hiroyuki Ishibashi
- School of Pharmaceutical Sciences, College of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
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50
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Hou XL, Yang Z, Yeung KS, Wong HN. Chapter 5.3: Five-Membered Ring Systems: Furans and Benzofurans. PROGRESS IN HETEROCYCLIC CHEMISTRY 2009. [DOI: 10.1016/s0959-6380(09)70034-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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