1
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Shen D, Cao D, Zhang R, Bai P, Liu Z. Lewis acid catalyzed Markovnikov hydrobromination and hydrochlorination of alkynes using TMSX (X = Br, Cl). Org Biomol Chem 2024; 22:4062-4066. [PMID: 38716834 DOI: 10.1039/d4ob00608a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Markovnikov hydrobromination and hydrochlorination of alkynes were achieved using TMSX (X = Br, Cl) instead of corrosive HX (X = Br, Cl) as the bromination and chlorination reagents. Mn(OAc)2·4H2O was used as the hydrobromination catalyst for electron-neutral/rich alkynes. For the hydrobromination of electron-deficient alkynes and hydrochlorination of alkynes, Zn(OAc)2·2H2O was employed as the catalyst. Mechanistic studies suggested that the in situ formed TMS-substituted alkyne might be a reactive intermediate and the proton of the terminal alkyne should be a hydrogen source for the hydrohalogenation reaction.
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Affiliation(s)
- Dalong Shen
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.
| | - Dehai Cao
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.
| | - Ruizeng Zhang
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.
| | - Peiyuan Bai
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.
| | - Zhenxing Liu
- College of Chemistry, Zhengzhou University, Zhengzhou, Henan, China.
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2
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Pati SS, Mishra A, Das JP. Regio- and Stereocontrolled Hydrohalogenation of Ynamides with N-Halosuccinimides (NXS) as the Halogen Source: Synthesis of ( E)-α-Haloenamides. J Org Chem 2024; 89:1727-1735. [PMID: 38237061 DOI: 10.1021/acs.joc.3c02436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Presented herein is a facile stereoselective construction of synthetically versatile chiral and achiral (E)-α-haloenamides under mild conditions utilizing N-halosuccinimides and diphenylphosphine oxide. This reaction is metal-free, mild, efficient, very rapid, and practical and highlights the synthetic versatility of ynamides. The reaction has a broad substrate scope; both chiral and achiral ynamides have been transformed into the corresponding (E)-α-haloenamides within a very short period of time without compromising selectivity or complexity.
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Affiliation(s)
- Subhransu S Pati
- Organic Synthesis and Catalysis Laboratory, Department of Chemistry, Ravenshaw University, Cuttack 753003, India
| | - Archana Mishra
- Organic Synthesis and Catalysis Laboratory, Department of Chemistry, Ravenshaw University, Cuttack 753003, India
| | - Jaya P Das
- Organic Synthesis and Catalysis Laboratory, Department of Chemistry, Ravenshaw University, Cuttack 753003, India
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3
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Zhou J, Wang W, Zuo F, Liu S, Mosim Amin P, Zhong K, Bai R, Wang Y. Catalyst-Controlled Divergent Generations and Transformations of α-Carbonyl Cations from Alkynes. Angew Chem Int Ed Engl 2023; 62:e202302545. [PMID: 37856619 DOI: 10.1002/anie.202302545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 10/21/2023]
Abstract
α-Carbonyl cations are the umpolung forms of the synthetically fundamental α-carbonyl carbanions. They are highly reactive yet rarely studied and utilized species and their precursors were rather limited. Herein, we report the catalyst-controlled divergent generations of α-carbonyl cations from single alkyne functionalities and the interception of them via Wagner-Meerwein rearrangement. Two chemodivergent catalytic systems have been established, leading to two different types of α-carbonyl cations and, eventually, two different types of products, i.e. the α,β- and β,γ-unsaturated carbonyl compounds. Broad spectrum of alkynes including aryl alkyne, ynamide, alkynyl ether, and alkynyl sulfide could be utilized and the migration priorities of different groups in the Wagner-Meerwein rearrangement step was elucidated. Density functional theory calculations further supported the intermediacy of α-carbonyl cations via the N-O bond cleavage in both the two catalytic systems. Another key feature of this methodology was the fragmentation of synthetically inert tert-butyl groups into readily transformable olefin functionalities. The synthetic potential was highlighted by the scale-up reactions and the downstream diversifications including the formal synthesis of nicotlactone B and galbacin.
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Affiliation(s)
- Junrui Zhou
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, P. R. China
| | - Weilin Wang
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, P. R. China
| | - Fenfang Zuo
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing, 400030, China
| | - Shupeng Liu
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, P. R. China
| | - Pathan Mosim Amin
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, P. R. China
| | - Kangbao Zhong
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing, 400030, China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing, 400030, China
| | - Youliang Wang
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, P. R. China
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4
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Feng M, Tinelli R, Meyrelles R, González L, Maryasin B, Maulide N. Direct Synthesis of α-Amino Acid Derivatives by Hydrative Amination of Alkynes. Angew Chem Int Ed Engl 2023; 62:e202212399. [PMID: 36222199 PMCID: PMC10098499 DOI: 10.1002/anie.202212399] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Indexed: 11/07/2022]
Abstract
α-Amino acid derivatives are key components of the molecules of life. The synthesis of α-amino carbonyl/carboxyl compounds is a contemporary challenge in organic synthesis. Herein, we report a practical method for the preparation of α-amino acid derivatives via direct hydrative amination of activated alkynes under mild conditions, relying on sulfinamides as the nitrogen source. Computational studies suggest that the reaction is enabled by a new type of sulfonium [2,3]-sigmatropic rearrangement.
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Affiliation(s)
- Minghao Feng
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
| | - Roberto Tinelli
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria.,Vienna Doctoral School in Chemistry, University of Vienna, Währinger Strasse 42, 1090, Vienna, Austria
| | - Ricardo Meyrelles
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria.,Institute of Theoretical Chemistry, University of Vienna, Währinger Strasse 17, 1090, Vienna, Austria.,Vienna Doctoral School in Chemistry, University of Vienna, Währinger Strasse 42, 1090, Vienna, Austria
| | - Leticia González
- Institute of Theoretical Chemistry, University of Vienna, Währinger Strasse 17, 1090, Vienna, Austria
| | - Boris Maryasin
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria.,Institute of Theoretical Chemistry, University of Vienna, Währinger Strasse 17, 1090, Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Vienna, Austria
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5
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Feng M, Tinelli R, Meyrelles R, González L, Maryasin B, Maulide N. Synthese von α-Aminosäurederivaten durch hydrative Aminierung von Alkinen. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 135:e202212399. [PMID: 38516564 PMCID: PMC10952632 DOI: 10.1002/ange.202212399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Indexed: 11/11/2022]
Abstract
Abstractα‐Aminosäurederivate sind Kernbestandteile jeglichen Lebens. Die Synthese von α‐Aminocarbonyl/carboxyl Verbindungen ist jedoch weiterhin eine Herausforderung für die organische Synthese. In dieser Arbeit berichten wir von einer praktischen Herstellungsmethode für α‐Aminosäurederivate durch direkte hydrative Aminierung von aktivierten Alkinen mit Sulfinamiden unter milden Bedingungen. Computergestützte Untersuchungen legen nahe, dass eine [2,3]‐sigmatrope Sulfoniumumlagerung der zentrale Schritt der Reaktion ist.
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Affiliation(s)
- Minghao Feng
- Institut für Organische ChemieUniversität WienWähringer Straße 381090WienÖsterreich
| | - Roberto Tinelli
- Institut für Organische ChemieUniversität WienWähringer Straße 381090WienÖsterreich
- Vienna Doctoral School in ChemistryUniversität WienWähringer Straße 421090WienÖsterreich
| | - Ricardo Meyrelles
- Institut für Organische ChemieUniversität WienWähringer Straße 381090WienÖsterreich
- Institut für Theoretische ChemieUniversität WienWähringer Straße 171090WienÖsterreich
- Vienna Doctoral School in ChemistryUniversität WienWähringer Straße 421090WienÖsterreich
| | - Leticia González
- Institut für Theoretische ChemieUniversität WienWähringer Straße 171090WienÖsterreich
| | - Boris Maryasin
- Institut für Organische ChemieUniversität WienWähringer Straße 381090WienÖsterreich
- Institut für Theoretische ChemieUniversität WienWähringer Straße 171090WienÖsterreich
| | - Nuno Maulide
- Institut für Organische ChemieUniversität WienWähringer Straße 381090WienÖsterreich
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6
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Nguyen QH, Um TW, Shin S. α-Carbonyl Radicals from N-Enoxybenzotriazoles: De Novo Synthesis of 9-Phenanthrols. Org Lett 2022; 24:8337-8342. [DOI: 10.1021/acs.orglett.2c03356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Quynh H. Nguyen
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Tae-Woong Um
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Seunghoon Shin
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
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7
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Wang ZS, Zhu LJ, Li CT, Liu BY, Hong X, Ye LW. Synthesis of Axially Chiral N-Arylindoles via Atroposelective Cyclization of Ynamides Catalyzed by Chiral Brønsted Acids. Angew Chem Int Ed Engl 2022; 61:e202201436. [PMID: 35246909 DOI: 10.1002/anie.202201436] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Indexed: 01/25/2023]
Abstract
In recent years, asymmetric catalysis of ynamides has attracted much attention, but these reactions mostly constructed central chirality, except for a few examples on the synthesis of axially chiral compounds which exclusively relied on noble-metal catalysis. Herein, a facile access to axially chiral N-heterocycles enabled by chiral Brønsted acid-catalyzed 5-endo-dig cyclization of ynamides is disclosed, which represents the first metal-free protocol for the construction of axially chiral compounds from ynamides. This method allows the practical and atom-economical synthesis of valuable N-arylindoles in excellent yields with generally excellent enantioselectivities. Moreover, organocatalysts and ligands based on such axially chiral N-arylindole skeletons are demonstrated to be applicable to asymmetric catalysis.
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Affiliation(s)
- Ze-Shu Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Lu-Jing Zhu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, 310024, China
| | - Cui-Ting Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Bin-Yang Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xin Hong
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, 310024, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China.,State Key Laboratory of Organometallic Chemistry, Shanghai, Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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8
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Synthesis of Axially Chiral N‐Arylindoles via Atroposelective Cyclization of Ynamides Catalyzed by Chiral Brønsted Acids. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Kumar R, Nguyen QH, Um TW, Shin S. Recent Progress in Enolonium Chemistry under Metal-Free Conditions. CHEM REC 2021; 22:e202100172. [PMID: 34418282 DOI: 10.1002/tcr.202100172] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/08/2021] [Accepted: 08/11/2021] [Indexed: 11/09/2022]
Abstract
Umpolung approach through inversion of the polarity of conventional enolates, has opened up an unprecedented opportunity in the cross-coupling via alkylation. The enolonium equivalents can be accessed either by hypervalent iodine reagents, activation/oxidation of amides, or the oxidation of alkynes. Under umpolung conditions, highly basic conditions required for classical enolate chemistry can be avoided, and they can couple with unmodified nucleophiles such as heteroatom donors and electron-rich arenes.
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Affiliation(s)
- Ravi Kumar
- Department of Chemistry, Center for New Directions in Organic Chemistry (CNOS), and Institute for Natural Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Quynh H Nguyen
- Department of Chemistry, Center for New Directions in Organic Chemistry (CNOS), and Institute for Natural Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Tae-Woong Um
- Department of Chemistry, Center for New Directions in Organic Chemistry (CNOS), and Institute for Natural Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
| | - Seunghoon Shin
- Department of Chemistry, Center for New Directions in Organic Chemistry (CNOS), and Institute for Natural Sciences, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Korea
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10
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An D, Zhang W, Pan B, Zhao Y. Metal‐Free Hydrophosphoryloxylation of Ynamides: Rapid Access to Enol Phosphates. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001335] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Dalie An
- Liaoning Normal University 850 Huanghe Road Dalian 116029 China
| | - Weinan Zhang
- Liaoning Normal University 850 Huanghe Road Dalian 116029 China
| | - Bin Pan
- Shandong Peninsula Engineering Research Center of Comprehensive Brine Utilization Weifang University of Science and Technology Shouguang 262700 China
| | - Yingying Zhao
- Liaoning Normal University 850 Huanghe Road Dalian 116029 China
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11
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Lynch CC, Sripada A, Wolf C. Asymmetric synthesis with ynamides: unique reaction control, chemical diversity and applications. Chem Soc Rev 2020; 49:8543-8583. [PMID: 33073285 PMCID: PMC8383824 DOI: 10.1039/d0cs00769b] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ynamides are among the most powerful building blocks in organic synthesis and have become invaluable starting materials for the construction of multifunctional compounds and challenging architectures that would be difficult to prepare otherwise. The rapidly growing popularity originates from the unique reactivity and ease of manipulation of the polarized ynamide triple bond, the advance of practical methods for making them, and the simplicity of storage and handling. These attractive features and the demonstration of numerous synthetic applications have spurred the development of intriguing asymmetric reaction strategies during the last decade. An impressive variety of chemo-, regio- and stereoselective carbon-carbon and carbon-heteroatom bond forming reactions with ynamides have been developed and now significantly enrich the toolbox of synthetic chemists. This review provides a comprehensive overview of asymmetric ynamide chemistry since 2010 with a focus on the general scope, current limitations, stereochemical reaction control and mechanistic aspects.
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Affiliation(s)
- Ciarán C Lynch
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC 20057, USA.
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12
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Abstract
Over the past two decades, the development and application of ynamide chemistry have received more and more attention. Ynamides have proven to be versatile reagents for organic synthesis, and have been widely applied to the rapid assembly of a diverse range of structurally complex N-containing molecules, especially the valuable N-heterocycles. In comparison with the well-established transition metal-catalyzed reactions of ynamides, metal-free ynamide transformations have relatively seldom been exploited. Recently, Brønsted acid-mediated reactions of ynamides represent significant advances in ynamide chemistry. This review summarizes the latest trends and developments of Brønsted acid-mediated reactions of ynamides, including cycloaddition, cyclization, intramolecular alkoxylation-initiated rearrangement, oxygen atom transfer reactions and hydro-heteroatom addition reactions.
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Affiliation(s)
- Yang-Bo Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
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13
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Wen H, Yan W, Chen P, Li Y, Tang Y. Catalyst-Free [4+2] Cycloaddition of Ynamides with 2-Halomethyl Phenols To Construct 2-Amino-4 H-Chromenes and α-Halo Enamides Simultaneously. J Org Chem 2020; 85:12870-12881. [PMID: 33000945 DOI: 10.1021/acs.joc.0c01258] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We report the development of a facile protocol for the [4+2] cycloaddition of ynamides and 2-halomethyl phenols to afford the corresponding 2-amino-4H-chromenes and α-halo enamides under catalyst-free conditions. The reaction proceeds under mild conditions and exhibits good tolerance toward various functional groups and generates high yields. The plausible mechanism involves the formation of an active intermediate keteniminium as well as o-methylene quinone.
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Affiliation(s)
- Hao Wen
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Yushan Road, Qingdao 266003, P. R. China
| | - Weibo Yan
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Yushan Road, Qingdao 266003, P. R. China
| | - Ping Chen
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Yushan Road, Qingdao 266003, P. R. China
| | - Yu Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Yushan Road, Qingdao 266003, P. R. China
| | - Yu Tang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Yushan Road, Qingdao 266003, P. R. China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology Qingdao 266237, P. R. China
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14
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Dwadnia N, Lingua H, Mouysset D, Mimoun L, Siri D, Bertrand MP, Feray L. Intermolecular Addition of Carbon-Centered Radicals to Ynamides. A Regio- and Stereoselective Route to Persubstituted α-Iodo-enamides. J Org Chem 2020; 85:4114-4121. [PMID: 32069414 DOI: 10.1021/acs.joc.9b03255] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Rather surprisingly, C-C bond formation through "intermolecular" radical addition to internal ynamides has never been reported. Actually, ynamides are excellent acceptors for "electrophilic" carbon-centered radicals. These processes enable the introduction of functionalized alkyl chains at Cβ, groups that have not yet been introduced via the addition of organometallics. Radical carboiodination affords persubstituted α-iodo-enamides in moderate to high yield. The addition is totally stereoselective. Theoretical support to the mechanism and the scope and limitation of the reaction are discussed.
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Affiliation(s)
- Nejib Dwadnia
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Hugo Lingua
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Dominique Mouysset
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Liliane Mimoun
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Didier Siri
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Michèle P Bertrand
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Laurence Feray
- Aix Marseille Univ, CNRS, ICR, Institut Chimie Radicalaire, UMR 7273, Equipes CMO et CT, Campus St Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
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15
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The effect of protonation on the excited state dynamics of pyrimidine chromophores. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112398] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Um TW, Lee G, Shin S. Enantioselective Synthesis of Tertiary α,α-Diaryl Carbonyl Compounds Using Chiral N,N'-Dioxides under Umpolung Conditions. Org Lett 2020; 22:1985-1990. [PMID: 32045252 DOI: 10.1021/acs.orglett.0c00333] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Brønsted acid-catalyzed addition of the chiral N,N'-dioxide into ynamides generated enolonium ions in situ which underwent enantioselective alkylation by indoles, pyrroles, and phenols, without racemization of the formed tertiary center. This external oxidant approach allows for the use of unmodified nucleophiles and does not leave trace groups from the oxidant, which significantly increases the synthetic efficiency and the product diversity. Furthermore, the byproduct of the N,N'-dioxide could be efficiently recycled into an optically pure form.
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Affiliation(s)
- Tae-Woong Um
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Girim Lee
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Seunghoon Shin
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
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17
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Nguyen NH, Nguyen QH, Biswas S, Patil DV, Shin S. β-Oxidation of Ynamides into N, O-Acetals by mCPBA: Application in Enantioselective Intermolecular Transacetalization. Org Lett 2019; 21:9009-9013. [PMID: 31692359 DOI: 10.1021/acs.orglett.9b03411] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Oxidation of ynamides by mCPBA led to β-oxygenation and resulted in formation of carbonyl compounds with α-N,O-acetal functionality. These N,O-acetals are formed in high yields and can be stored indefinitely at room temperature. Yet, they can be activated by a chiral Brønsted acid and underwent an enantioselective transacetalization into a α-N,O-acetal. Subsequent diastereoselective transformations occurred with exceptional selectivity according to Felkin-Anh model.
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Affiliation(s)
- Nguyen H Nguyen
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro , Seongdong-gu, Seoul 04763 , Korea
| | - Quynh H Nguyen
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro , Seongdong-gu, Seoul 04763 , Korea
| | - Soumen Biswas
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro , Seongdong-gu, Seoul 04763 , Korea
| | - Dilip V Patil
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro , Seongdong-gu, Seoul 04763 , Korea
| | - Seunghoon Shin
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro , Seongdong-gu, Seoul 04763 , Korea
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18
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Nguyen QH, Nguyen NH, Kim H, Shin S. Synthesis of γ-substituted carbonyl compounds from DMSO-mediated oxidation of enynamides: mechanistic insights and carbon- and hetero-functionalizations. Chem Sci 2019; 10:8799-8805. [PMID: 31803452 PMCID: PMC6849631 DOI: 10.1039/c9sc03663f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 08/04/2019] [Indexed: 02/05/2023] Open
Abstract
1,3-Enynamides underwent oxygenative coupling with carbon- and heteroatom nucleophiles with high remote selectivity. Kinetic analysis revealed a continuum mechanism between concerted SN2′′ and via a carbocation, depending on the nucleophiles used.
Oxidative coupling of 1,3-enynamides using DMSO as a terminal oxidant has been developed. Carbon as well as unmodified heteroatom nucleophiles, including aliphatic alcohols, thiols, and hydrazides, could be efficiently alkylated at the γ-position in a highly regioselective fashion. The kinetic analysis suggested a nucleophile-dependent mechanism ranging from a concerted SN2′′ to a carbocationic mechanism. Thus, the remote site-selectivity was ascribed to the partial positive charge developing at the terminal carbocationic center.
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Affiliation(s)
- Quynh H Nguyen
- Department of Chemistry , Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro, Seongdong-gu , Seoul 04763 , Korea .
| | - Nguyen H Nguyen
- Department of Chemistry , Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro, Seongdong-gu , Seoul 04763 , Korea .
| | - Hanbyul Kim
- Department of Chemistry , Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro, Seongdong-gu , Seoul 04763 , Korea .
| | - Seunghoon Shin
- Department of Chemistry , Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS) , Hanyang University , 222 Wangsimni-ro, Seongdong-gu , Seoul 04763 , Korea .
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19
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Zhu J, Wang Q, Meng X, Zhao C, Sun X, Tian L, Cao Z. Direct Hydroheteroarylation of Ynamides with 2 H
-Tetrazoles: Regio- and Stereoselective Synthesis of ( Z
)- α
-Tetrazole Enamides. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900604] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jiekun Zhu
- School of Chemistry and Chemical Engineering; Qufu Normal University; Qufu 273165 Shandong P. R. China
| | - Qingbo Wang
- School of Chemistry and Chemical Engineering; Qufu Normal University; Qufu 273165 Shandong P. R. China
| | - Xin Meng
- School of Chemistry and Chemical Engineering; Qufu Normal University; Qufu 273165 Shandong P. R. China
| | - Changyin Zhao
- School of Chemistry and Chemical Engineering; Qufu Normal University; Qufu 273165 Shandong P. R. China
| | - Xuejun Sun
- School of Chemistry and Chemical Engineering; Qufu Normal University; Qufu 273165 Shandong P. R. China
| | - Laijin Tian
- School of Chemistry and Chemical Engineering; Qufu Normal University; Qufu 273165 Shandong P. R. China
- Shandong Key Laboratory of Life-Organic Analysis; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine; Qufu 273165 Shandong P. R. China
| | - Ziping Cao
- School of Chemistry and Chemical Engineering; Qufu Normal University; Qufu 273165 Shandong P. R. China
- Shandong Key Laboratory of Life-Organic Analysis; Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine; Qufu 273165 Shandong P. R. China
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20
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Affiliation(s)
- Dilip V. Patil
- Department of Chemistry; Center for New Directions in Organic Synthesis (CNOS); Institution for Natural Sciences; Hanyang University; 222 Wangsimni-ro Seongdong-gu Seoul Korea 14763
| | - Seunghoon Shin
- Department of Chemistry; Center for New Directions in Organic Synthesis (CNOS); Institution for Natural Sciences; Hanyang University; 222 Wangsimni-ro Seongdong-gu Seoul Korea 14763
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21
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Cao W, Chen P, Wang L, Wen H, Liu Y, Wang W, Tang Y. A Highly Regio- and Stereoselective Syntheses of α-Halo Enamides, Vinyl Thioethers, and Vinyl Ethers with Aqueous Hydrogen Halide in Two-Phase Systems. Org Lett 2018; 20:4507-4511. [PMID: 30004711 DOI: 10.1021/acs.orglett.8b01809] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A metal-free regio- and stereoselective method is achieved for the preparation of ( E)-configured α-halo enamides, vinyl thioethers, and vinyl ethers using aqueous HX (X = F, Cl, Br, I), which features high functional group compatibility and regio- and stereoselectivity, mild conditions, high efficiency, and rapid transformation. Additionally, the isomers could be yielded readily from the ( E)-configured α-halo enamides via photocatalysis or under Sonogashira coupling conditions.
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Affiliation(s)
- Wei Cao
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Yushan Road , Qingdao 266003 , P. R. China
| | - Ping Chen
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Yushan Road , Qingdao 266003 , P. R. China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao 266109 , P. R. China
| | - Hao Wen
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Yushan Road , Qingdao 266003 , P. R. China
| | - Yu Liu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Yushan Road , Qingdao 266003 , P. R. China
| | - Wanshu Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Yushan Road , Qingdao 266003 , P. R. China
| | - Yu Tang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy , Ocean University of China , Yushan Road , Qingdao 266003 , P. R. China.,Laboratory for Marine Drugs and Bioproducts Qingdao National Laboratory for Marine Science and Technology , Qingdao 266237 , P. R. China
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22
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Yabuuchi Y, Sakamoto K, Yoshimura T, Matsuo JI. Palladium-catalyzed stereoselective intramolecular cyclization and Suzuki coupling of N -arylsulfonyl-α-chloroenamides promoted by a γ-hydroxy group. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Merino-García R, Hernández-Anzaldo S, Reyes-Ortega Y. Syntheses, Crystallization, and Spectroscopic Characterization of 3,5-Lutidine N-Oxide Dehydrate. J Vis Exp 2018:57233. [PMID: 29757274 PMCID: PMC6100777 DOI: 10.3791/57233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The synthesis of 3,5-lutidine N-oxide dehydrate, 1, was achieved in the synthesis route of 2-amino-pyridine-3,5-dicarboxylic acid. Ochiai first used the methodology for non-substituted pyridines in 1957 in a 12 h process, but no X-ray suitable crystals were obtained. The substituted ring used in the methodology presented here clearly influenced the addition of water molecules into the asymmetric unit, which confers a different nucleophilic strength in 1. The X-ray suitable crystal compound 1 was possible due to the stabilization of the negative charge in the oxygen by the presence of two water molecules where the hydrogen atoms donate positive charge into the ring; such water molecules serve well to construct a supramolecular interaction. The hydrated molecules may be possible for the alkaline system that is reached by adjusting the pH to 10. Importantly, the double methyl substituted ring and a reaction time of 5 h, makes it a more versatile method and with wider chemical applications for future ring insertions.
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Affiliation(s)
| | | | - Yasmi Reyes-Ortega
- Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla;
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24
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Kim SW, Um TW, Shin S. Metal-Free Iodine-Catalyzed Oxidation of Ynamides and Diaryl Acetylenes into 1,2-Diketo Compounds. J Org Chem 2018; 83:4703-4711. [DOI: 10.1021/acs.joc.8b00484] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Seung Woo Kim
- Department of Chemistry, Center for New Directions in Organic Synthesis (CNOS) and Research Institute for Natural Sciences, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Tae-Woong Um
- Department of Chemistry, Center for New Directions in Organic Synthesis (CNOS) and Research Institute for Natural Sciences, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Seunghoon Shin
- Department of Chemistry, Center for New Directions in Organic Synthesis (CNOS) and Research Institute for Natural Sciences, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
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25
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Zeng X, Lu Z, Liu S, Hammond GB, Xu B. Metal-free, Regio-, and Stereo-Controlled Hydrochlorination and Hydrobromination of Ynones and Ynamides. J Org Chem 2017; 82:13179-13187. [PMID: 29166765 PMCID: PMC5735994 DOI: 10.1021/acs.joc.7b02257] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
![]()
We developed an atom-economical
and metal-free method for the regio-
and stereo-selective hydrohalogenation of ynones and ynamides using
easy to handle DMPU/HX (X = Br or Cl) reagents. The reaction operates
under mild conditions and a range of functional groups is well tolerated.
We propose that the hydrohalogenation of ynones gives the anti-addition products via a concerted multimolecular AdE3 mechanism and that the hydrohalogenation of ynamides produces
the syn-addition products via a cationic keteniminium
intermediate.
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Affiliation(s)
- Xiaojun Zeng
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , 2999 North Renmin Lu, Shanghai 201620, China
| | - Zhichao Lu
- Department of Chemistry, University of Louisville , Louisville, Kentucky 40292, United States
| | - Shiwen Liu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , 2999 North Renmin Lu, Shanghai 201620, China
| | - Gerald B Hammond
- Department of Chemistry, University of Louisville , Louisville, Kentucky 40292, United States
| | - Bo Xu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University , 2999 North Renmin Lu, Shanghai 201620, China
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26
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Romero E, Minard C, Benchekroun M, Ventre S, Retailleau P, Dodd RH, Cariou K. Base-Mediated Generation of Ketenimines from Ynamides: Direct Access to Azetidinimines by an Imino-Staudinger Synthesis. Chemistry 2017. [DOI: 10.1002/chem.201702545] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Eugénie Romero
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Corinne Minard
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Mohamed Benchekroun
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Sandrine Ventre
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Robert H. Dodd
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Kevin Cariou
- Institut de Chimie des Substances Naturelles; CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; Avenue de la Terrasse 91198 Gif-sur-Yvette France
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27
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Zhang SL, Wan HX, Deng ZQ. A computational study on the mechanism of ynamide-mediated amide bond formation from carboxylic acids and amines. Org Biomol Chem 2017; 15:6367-6374. [PMID: 28717802 DOI: 10.1039/c7ob01378g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper reports a computational study elucidating the reaction mechanism for ynamide-mediated amide bond formation from carboxylic acids and amines. The mechanisms have been studied in detail for ynamide hydrocarboxylation and the subsequent aminolysis of the resulting adduct by an amine. Ynamide hydrocarboxylation is kinetically favorable and thermodynamically irreversible, resulting in the formation of a key low-lying intermediate CP1 featuring geminal vinylic acyloxy and sulfonamide groups. The aminolysis of CP1 by the amine is proposed to be catalyzed by the carboxylic acid itself that imparts favourable bifunctional effects. In the proposed key transition state TSaminolysis-acid-iso2, the amine undergoes direct nucleophilic substitution at the acyl of CP1 to replace the enolate group in a concerted way, which is promoted by secondary hydrogen bonding of carboxylic acid with both the amine and CP1. These secondary interactions are suggested to increase the nucleophilicity of the amine and to activate the Cacyl-O bond to be cleaved, thereby stabilizing the aminolysis transition state. The concerted aminolysis mechanism is competitive with the classic stepwise nucleophilic acyl substitution mechanism that features sequential amine addition to acyl/intramolecular proton transfer/C-O bond cleavage and a key tetrahedral intermediate. Based on the mechanistic model, the carboxylic acid substrate effect and studies of more acidic CF3SO3H as the catalyst are in good agreement with the experimental observations, lending further support for the mechanistic model. The bifunctional catalytic effect of the carboxylic acid substrate may widely play a role in related amide bond-forming reactions and peptide formation chemistry.
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Affiliation(s)
- Song-Lin Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, China.
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28
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Oh KH, Kim JG, Park JK. A Modular Synthesis of 4-Aminoquinolines and [1,3] N-to-C Rearrangement to Quinolin-4-ylmethanesulfonamides. Org Lett 2017; 19:3994-3997. [DOI: 10.1021/acs.orglett.7b01701] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Kyung Hwan Oh
- Department of Chemistry and
Chemistry Institute of Functional Materials, Pusan National University, Busan 609-735, Korea
| | - Jin Gyeong Kim
- Department of Chemistry and
Chemistry Institute of Functional Materials, Pusan National University, Busan 609-735, Korea
| | - Jin Kyoon Park
- Department of Chemistry and
Chemistry Institute of Functional Materials, Pusan National University, Busan 609-735, Korea
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29
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Yu LZ, Wei Y, Shi M. Synthesis of Polysubstituted Polycyclic Aromatic Hydrocarbons by Gold-Catalyzed Cyclization–Oxidation of Alkylidenecyclopropane-Containing 1,5-Enynes. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00784] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Liu-Zhu Yu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
| | - Yin Wei
- State
Key Laboratory of Organometallic Chemistry, University of Chinese
Academy of Science, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
- State
Key Laboratory of Organometallic Chemistry, University of Chinese
Academy of Science, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
- State
Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
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30
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Patil DV, Kim SW, Nguyen QH, Kim H, Wang S, Hoang T, Shin S. Brønsted Acid Catalyzed Oxygenative Bimolecular Friedel–Crafts‐type Coupling of Ynamides. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612471] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Dilip V. Patil
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS) Hanyang University 222 Wangsimni-ro, Seong-gu Seoul 04763 Korea
| | - Seung Woo Kim
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS) Hanyang University 222 Wangsimni-ro, Seong-gu Seoul 04763 Korea
| | - Quynh H. Nguyen
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS) Hanyang University 222 Wangsimni-ro, Seong-gu Seoul 04763 Korea
| | - Hanbyul Kim
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS) Hanyang University 222 Wangsimni-ro, Seong-gu Seoul 04763 Korea
| | - Shan Wang
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS) Hanyang University 222 Wangsimni-ro, Seong-gu Seoul 04763 Korea
| | - Tuan Hoang
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS) Hanyang University 222 Wangsimni-ro, Seong-gu Seoul 04763 Korea
| | - Seunghoon Shin
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS) Hanyang University 222 Wangsimni-ro, Seong-gu Seoul 04763 Korea
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31
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Patil DV, Kim SW, Nguyen QH, Kim H, Wang S, Hoang T, Shin S. Brønsted Acid Catalyzed Oxygenative Bimolecular Friedel-Crafts-type Coupling of Ynamides. Angew Chem Int Ed Engl 2017; 56:3670-3674. [PMID: 28230305 DOI: 10.1002/anie.201612471] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Indexed: 11/11/2022]
Abstract
A non-metal approach for accessing α-oxo carbene surrogates for a C-C bond-forming bimolecular coupling between ynamides and nucleophilic arenes was developed. This acid-catalyzed coupling features mild temperature, which is critical for the required temporal chemoselectivity among nucleophiles. The scope of nucleophiles includes indoles, pyrroles, anilines, phenols and silyl enolethers. Furthermore, a direct test of SN 2' mechanism has been provided by employing chiral N,N'-dioxides which also enlightens the nature of the intermediates in related metal-catalyzed processes.
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Affiliation(s)
- Dilip V Patil
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seong-gu, Seoul, 04763, Korea
| | - Seung Woo Kim
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seong-gu, Seoul, 04763, Korea
| | - Quynh H Nguyen
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seong-gu, Seoul, 04763, Korea
| | - Hanbyul Kim
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seong-gu, Seoul, 04763, Korea
| | - Shan Wang
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seong-gu, Seoul, 04763, Korea
| | - Tuan Hoang
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seong-gu, Seoul, 04763, Korea
| | - Seunghoon Shin
- Department of Chemistry & Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seong-gu, Seoul, 04763, Korea
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