1
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Xu H, Ma S. Palladium-Catalyzed [6+2] Double Allene Annulation for Benzazocines Synthesis. Angew Chem Int Ed Engl 2023; 62:e202213676. [PMID: 36372784 DOI: 10.1002/anie.202213676] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/07/2022] [Accepted: 11/11/2022] [Indexed: 11/15/2022]
Abstract
An efficient double allene protocol for the formation of benzazocines has been developed. The reaction constitutes a highly regioselective palladium-catalyzed formal [6+2] annulation of allenyl benzoxazinanones with terminal allenes forming the challenging 8-membered cycles. Decent yields and excellent regioselectivity have been observed under mild conditions with a remarkable Z-stereoselectivity for the exo-cyclic C=C bonds. The synthetic potentials of benzazocine products have been demonstrated.
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Affiliation(s)
- Haibo Xu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Shengming Ma
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, P. R. China.,Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, P. R. China
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2
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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: 5] [Impact Index Per Article: 5.0] [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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3
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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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4
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Zhu G, Zhou J, Liu L, Li X, Zhu X, Lu X, Zhou J, Ye L. Catalyst‐Dependent Stereospecific [3,3]‐Sigmatropic Rearrangement of Sulfoxide‐Ynamides: Divergent Synthesis of Chiral Medium‐Sized
N
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S
‐Heterocycles. Angew Chem Int Ed Engl 2022; 61:e202204603. [DOI: 10.1002/anie.202204603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Indexed: 01/20/2023]
Affiliation(s)
- Guang‐Yu Zhu
- 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
| | - Ji‐Jia Zhou
- 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
| | - Li‐Gao 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
| | - Xiao 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
| | - Xin‐Qi Zhu
- 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 Lu
- 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
| | - Jin‐Mei Zhou
- 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
| | - 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 Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
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5
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Zhu G, Zhou J, Liu L, Li X, Zhu X, Lu X, Zhou J, Ye L. Catalyst‐Dependent Stereospecific [3,3]‐Sigmatropic Rearrangement of Sulfoxide‐Ynamides: Divergent Synthesis of Chiral Medium‐Sized
N
,
S
‐Heterocycles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Guang‐Yu Zhu
- 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
| | - Ji‐Jia Zhou
- 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
| | - Li‐Gao 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
| | - Xiao 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
| | - Xin‐Qi Zhu
- 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 Lu
- 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
| | - Jin‐Mei Zhou
- 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
| | - 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 Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
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6
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Chen P, Zhou B, Wu P, Wang B, Ye L. Brønsted Acid Catalyzed Dearomatization by Intramolecular Hydroalkoxylation/Claisen Rearrangement: Diastereo‐ and Enantioselective Synthesis of Spirolactams. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202113464] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Peng‐Fei Chen
- 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
| | - Bo Zhou
- 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
| | - Peng Wu
- 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
| | - Binju 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
| | - 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 Organometallic Chemistry, Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
- State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
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7
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Leverenz M, Masson G, Pardo DG, Cossy J. Synthesis of Azocanes from Piperidines via an Azetidinium Intermediate. Chemistry 2021; 27:16325-16328. [PMID: 34643301 DOI: 10.1002/chem.202102739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Indexed: 11/11/2022]
Abstract
α-Trifluoromethyl azocanes are accessible from 2-(trifluoropropan-2-ol) piperidines by metal-free ring-expansion involving a bicyclic azetidinium intermediate. The opening of the azetidinium intermediate was achieved by various nucleophiles (amines, alcoholates, carboxylates, phosphonates, halides and pseudo-halides) with an excellent regio- diastereo- and enantioselectivity and in good yields. The relative configuration of the piperidines and azocanes were assigned and the deprotected azocanes offer opportunities for further derivatization.
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Affiliation(s)
- Malte Leverenz
- Molecular, Macromolecular Chemistry and Materials, UMR 7167 ESPCI Paris, CNRS, PSL University, 10 rue Vauquelin, 75231, Paris Cedex 05, France
| | - Guillaume Masson
- Molecular, Macromolecular Chemistry and Materials, UMR 7167 ESPCI Paris, CNRS, PSL University, 10 rue Vauquelin, 75231, Paris Cedex 05, France
| | - Domingo Gomez Pardo
- Molecular, Macromolecular Chemistry and Materials, UMR 7167 ESPCI Paris, CNRS, PSL University, 10 rue Vauquelin, 75231, Paris Cedex 05, France
| | - Janine Cossy
- Molecular, Macromolecular Chemistry and Materials, UMR 7167 ESPCI Paris, CNRS, PSL University, 10 rue Vauquelin, 75231, Paris Cedex 05, France
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8
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Chen PF, Zhou B, Wu P, Wang B, Ye LW. Brønsted Acid Catalyzed Dearomatization by Intramolecular Hydroalkoxylation/Claisen Rearrangement: Diastereo- and Enantioselective Synthesis of Spirolactams. Angew Chem Int Ed Engl 2021; 60:27164-27170. [PMID: 34672067 DOI: 10.1002/anie.202113464] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Indexed: 12/17/2022]
Abstract
Described herein is a novel Brønsted acid catalyzed intramolecular hydroalkoxylation/Claisen rearrangement, allowing the practical and atom-economic synthesis of a range of valuable spirolactams from readily available ynamides in generally good to excellent yields with excellent diastereoselectivities and broad substrate scope. Importantly, an unexpected dearomatization of nonactivated arenes and heteroaromatic compounds is involved in this tandem sequence. Moreover, an asymmetric version of this tandem cyclization was also achieved by efficient kinetic resolution by chiral phosphoric acid catalysis. In addition, the [3,3]-rearrangement is shown to be kinetically preferred over the related [1,3]-rearrangement by theoretical calculations.
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Affiliation(s)
- Peng-Fei Chen
- 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
| | - Bo Zhou
- 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
| | - Peng Wu
- 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
| | - Binju 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
| | - 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 Organometallic Chemistry, Shanghai, Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
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9
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Yang G, Ke Y, Zhao Y. Stereoselective Access to Polyfunctionalized Nine‐Membered Heterocycles by Sequential Gold and Palladium Catalysis. Angew Chem Int Ed Engl 2021; 60:12775-12780. [DOI: 10.1002/anie.202102061] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/28/2021] [Indexed: 11/05/2022]
Affiliation(s)
- Guoqiang Yang
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Republic of Singapore
| | - Ya‐Ming Ke
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Republic of Singapore
| | - Yu Zhao
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Republic of Singapore
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 China
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10
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Yang G, Ke Y, Zhao Y. Stereoselective Access to Polyfunctionalized Nine‐Membered Heterocycles by Sequential Gold and Palladium Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102061] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Guoqiang Yang
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Republic of Singapore
| | - Ya‐Ming Ke
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Republic of Singapore
| | - Yu Zhao
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Republic of Singapore
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 China
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11
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Qiao J, Zhao W, Liang Y, Yao ZJ, Wang S. Diastereoselective Access to Tetracyclic Eight-Membered Lactams through a Dearomative Heck Reaction and an Alkylative Ring-Opening Driven by Photoexcited Spiroindolines. Chemistry 2021; 27:6308-6314. [PMID: 33506517 DOI: 10.1002/chem.202005369] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/25/2021] [Indexed: 11/05/2022]
Abstract
An external-photocatalyst-free, light-driven alkylative ring-opening of stable spiroindolines was developed to construct indolo- and benzoannulated eight-membered lactams. The spiroindolines were prepared from tetrahydro-β-carbolines by a dearomative Heck reaction. Mechanistic experimental studies on the alkylative ring opening suggested that a photoredox pathway was involved, in which the spiroindoline performed as both reagent and photosensitizer. DFT calculations showed that the radical addition toward a cyclic alkene was the key to the diastereoselective formation of tetracyclic medium-sized lactams.
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Affiliation(s)
- Jianhui Qiao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratoryof Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Wenxuan Zhao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratoryof Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Yong Liang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratoryof Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Zhu-Jun Yao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratoryof Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
| | - Shaozhong Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratoryof Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P. R. China
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12
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Liu X, Wang Z, Zhai T, Luo C, Zhang Y, Chen Y, Deng C, Liu R, Ye L. Copper‐Catalyzed Azide–Ynamide Cyclization to Generate α‐Imino Copper Carbenes: Divergent and Enantioselective Access to Polycyclic N‐Heterocycles. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007206] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xin 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
| | - 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
| | - Tong‐Yi Zhai
- 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
| | - Chen Luo
- 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
| | - Yi‐Ping Zhang
- 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
| | - Yang‐Bo Chen
- 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
| | - Chao Deng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 China
| | - Rai‐Shung Liu
- Department of Chemistry National Tsing-Hua University Hsinchu Taiwan 30013 Republic of 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 Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
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13
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Liu X, Wang ZS, Zhai TY, Luo C, Zhang YP, Chen YB, Deng C, Liu RS, Ye LW. Copper-Catalyzed Azide-Ynamide Cyclization to Generate α-Imino Copper Carbenes: Divergent and Enantioselective Access to Polycyclic N-Heterocycles. Angew Chem Int Ed Engl 2020; 59:17984-17990. [PMID: 32621338 DOI: 10.1002/anie.202007206] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/11/2020] [Indexed: 01/23/2023]
Abstract
Here an efficient copper-catalyzed cascade cyclization of azide-ynamides via α-imino copper carbene intermediates is reported, representing the first generation of α-imino copper carbenes from alkynes. This protocol enables the practical and divergent synthesis of an array of polycyclic N-heterocycles in generally good to excellent yields with broad substrate scope and excellent diastereoselectivities. Moreover, an asymmetric azide-ynamide cyclization has been achieved with high enantioselectivities (up to 98:2 e.r.) by employing BOX-Cu complexes as chiral catalysts. Thus, this protocol constitutes the first example of an asymmetric azide-alkyne cyclization. The proposed mechanistic rationale for this cascade cyclization is further supported by theoretical calculations.
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Affiliation(s)
- Xin 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
| | - 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
| | - Tong-Yi Zhai
- 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
| | - Chen Luo
- 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
| | - Yi-Ping Zhang
- 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
| | - Yang-Bo Chen
- 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
| | - Chao Deng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Rai-Shung Liu
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan, 30013, Republic of 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 Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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14
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Wang G, Huang H, Guo W, Qian C, Sun J. Unusual Skeletal Reorganization of Oxetanes for the Synthesis of 1,2-Dihydroquinolines. Angew Chem Int Ed Engl 2020; 59:11245-11249. [PMID: 32219976 DOI: 10.1002/anie.201916727] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 03/08/2020] [Indexed: 01/29/2023]
Abstract
Skeletal reorganization is a type of fascinating transformations owing to their intriguing mechanisms and utility in complex molecule synthesis. However, only a limited amount of examples are known for most functional groups. Herein, we describe such an unusual process of oxetanes. In the presence of In(OTf)3 as catalyst, oxetane-tethered anilines reacted unexpectedly to form 1,2-dihydroquinolines. This process not only provides expedient access to dihydroquinolines, but also represents a new reaction of oxetane. Mechanistically, it is believed that the reaction proceeds through initial nitrogen attack rather than arene attack followed by a series of bond cleavage and formation events. Control experiments provided important insights into the mechanism.
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Affiliation(s)
- Guannan Wang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
| | - Wengang Guo
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Chenxiao Qian
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China.,Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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15
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Wang G, Huang H, Guo W, Qian C, Sun J. Unusual Skeletal Reorganization of Oxetanes for the Synthesis of 1,2‐Dihydroquinolines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guannan Wang
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Wengang Guo
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Chenxiao Qian
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
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16
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Zhu X, Wang Z, Hou B, Zhang H, Deng C, Ye L. Zinc‐Catalyzed Asymmetric Formal [4+3] Annulation of Isoxazoles with Enynol Ethers by 6π Electrocyclization: Stereoselective Access to 2
H
‐Azepines. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912534] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xin‐Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory for Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Ze‐Shu Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory for Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Bo‐Shang Hou
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory for Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Hao‐Wen Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory for Chemical Biology of Fujian Province College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Chao Deng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry College of Sciences Nanjing Agricultural University Nanjing 210095 China
| | - Long‐Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces Key Laboratory for 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
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17
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Zhu XQ, Wang ZS, Hou BS, Zhang HW, Deng C, Ye LW. Zinc-Catalyzed Asymmetric Formal [4+3] Annulation of Isoxazoles with Enynol Ethers by 6π Electrocyclization: Stereoselective Access to 2H-Azepines. Angew Chem Int Ed Engl 2019; 59:1666-1673. [PMID: 31724314 DOI: 10.1002/anie.201912534] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/31/2019] [Indexed: 12/17/2022]
Abstract
6π electrocyclization has attracted interest in organic synthesis because of its high stereospecificity and atom economy in the construction of versatile 5-7-membered cycles. However, examples of asymmetric 6π electrocyclization are quite scarce, and have to rely on the use of chiral organocatalysts, and been limited to pentadienyl-anion- and triene-type 6π electrocyclizations. Described herein is a zinc-catalyzed formal [4+3] annulation of isoxazoles with 3-en-1-ynol ethers via 6π electrocyclization, leading to the site-selective synthesis of functionalized 2H-azepines and 4H-azepines in good to excellent yields with broad substrate scope. Moreover, this strategy has also been used to produce chiral 2H-azepines with high enantioselectivities (up to 97:3 e.r.). This protocol not only is the first asymmetric heptatrienyl-cation-type 6π electrocyclization, but also is the first asymmetric reaction of isoxazoles with alkynes and the first asymmetric catalysis based on ynol ethers.
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Affiliation(s)
- Xin-Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Ze-Shu Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Bo-Shang Hou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Hao-Wen Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Chao Deng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for 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
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18
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Dierks A, Tönjes J, Schmidtmann M, Christoffers J. Synthesis of Benzo[b]azocin-2-ones by Aryl Amination and Ring-Expansion of α-(Iodophenyl)-β-oxoesters. Chemistry 2019; 25:14912-14920. [PMID: 31433088 PMCID: PMC6899745 DOI: 10.1002/chem.201903139] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Indexed: 01/16/2023]
Abstract
Transformation of β-oxoesters with PhI(OCOCF3 )2 leads to α-(ortho-iodophenyl)-β-oxoesters. These materials are the starting point for the synthesis of 6-carboxybenzo[b]azocin-2-ones by a sequence of aryl amination and ring transformation. This reaction sequence starts with copper-catalyzed formation of N-alkyl anilines from the iodoarenes and primary amines in the presence of K3 PO4 as stoichiometric base. The intermediate products underwent ring transformation by addition of the nitrogen into the carbonyl group of the cycloalkanone, furnishing benzo-annulated eight-membered ring lactams. Under the same reaction conditions, the cyclohexanone and cycloheptanone derivatives gave no aminated products, but ring-transformed to benzofuran derivatives. The title compounds of this investigation contain two points for further diversification (the lactam nitrogen and the carboxylate function), thus, the suitability of this compound class as a scaffold was proven by appropriate functionalizations. The first series of derivatizations of the scaffold was initiated by hydrogenolytic debenzylation of N-benzyl derivative to provide the NH-congener, which could be deprotonated with LDA and alkylated at nitrogen to give further examples of this compound class. Secondly, the ester function was submitted to saponification and the resulting carboxylic acid could be amidated using HATU as coupling reagent to furnish different amides.
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Affiliation(s)
- Anna Dierks
- Institut für ChemieCarl von Ossietzky Universität Oldenburg26111OldenburgGermany
| | - Jan Tönjes
- Institut für ChemieCarl von Ossietzky Universität Oldenburg26111OldenburgGermany
| | - Marc Schmidtmann
- Institut für ChemieCarl von Ossietzky Universität Oldenburg26111OldenburgGermany
| | - Jens Christoffers
- Institut für ChemieCarl von Ossietzky Universität Oldenburg26111OldenburgGermany
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19
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Lawer A, Rossi‐Ashton JA, Stephens TC, Challis BJ, Epton RG, Lynam JM, Unsworth WP. Internal Nucleophilic Catalyst Mediated Cyclisation/Ring Expansion Cascades for the Synthesis of Medium‐Sized Lactones and Lactams. Angew Chem Int Ed Engl 2019; 58:13942-13947. [DOI: 10.1002/anie.201907206] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/23/2019] [Indexed: 12/12/2022]
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20
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Xu Y, Sun Q, Tan T, Yang M, Yuan P, Wu S, Lu X, Hong X, Ye L. Organocatalytic Enantioselective Conia‐Ene‐Type Carbocyclization of Ynamide Cyclohexanones: Regiodivergent Synthesis of Morphans and Normorphans. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908495] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yin Xu
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Qing Sun
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Theoretical and Computational Chemistry of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Tong‐De Tan
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Ming‐Yang Yang
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Peng Yuan
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Shao‐Qi Wu
- Department of ChemistryZhejiang University Hangzhou 310027 China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Theoretical and Computational Chemistry of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Xin Hong
- Department of ChemistryZhejiang University Hangzhou 310027 China
| | - Long‐Wu Ye
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai 200032 China
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21
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Xu Y, Sun Q, Tan TD, Yang MY, Yuan P, Wu SQ, Lu X, Hong X, Ye LW. Organocatalytic Enantioselective Conia-Ene-Type Carbocyclization of Ynamide Cyclohexanones: Regiodivergent Synthesis of Morphans and Normorphans. Angew Chem Int Ed Engl 2019; 58:16252-16259. [PMID: 31444882 DOI: 10.1002/anie.201908495] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/07/2019] [Indexed: 12/13/2022]
Abstract
Described herein is an organocatalytic enantioselective desymmetrizing cycloisomerization of arylsulfonyl-protected ynamide cyclohexanones, representing the first metal-free asymmetric Conia-ene-type carbocyclization. This method allows the highly efficient and atom-economical construction of a range of valuable morphans with wide substrate scope and excellent enantioselectivity (up to 97 % ee). In addition, such a cycloisomerization of alkylsulfonyl-protected ynamide cyclohexanones can lead to the divergent synthesis of normorphans as the main products with high enantioselectivity (up to 90 % ee). Moreover, theoretical calculations are employed to elucidate the origins of regioselectivity and enantioselectivity.
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Affiliation(s)
- Yin Xu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Qing Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Theoretical and Computational Chemistry of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Tong-De Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Ming-Yang Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Peng Yuan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Shao-Qi Wu
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Theoretical and Computational Chemistry of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xin Hong
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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22
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Lawer A, Rossi‐Ashton JA, Stephens TC, Challis BJ, Epton RG, Lynam JM, Unsworth WP. Internal Nucleophilic Catalyst Mediated Cyclisation/Ring Expansion Cascades for the Synthesis of Medium‐Sized Lactones and Lactams. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907206] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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23
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Tan TD, Zhu XQ, Bu HZ, Deng G, Chen YB, Liu RS, Ye LW. Copper-Catalyzed Cascade Cyclization of Indolyl Homopropargyl Amides: Stereospecific Construction of Bridged Aza-[n.2.1] Skeletons. Angew Chem Int Ed Engl 2019; 58:9632-9639. [PMID: 31095848 DOI: 10.1002/anie.201904698] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Indexed: 11/09/2022]
Abstract
Catalytic cycloisomerization-initiated cascade cyclizations of terminal alkynes have received tremendous interest, and been widely used in the facile synthesis of a diverse array of valuable complex heterocycles. However, these tandem reactions have been mostly limited to noble-metal catalysis, and are initiated by an exo-cyclization pathway. Reported herein is an unprecedented copper-catalyzed endo-cyclization-initiated tandem reaction of indolyl homopropargyl amides, where copper catalyzes both the hydroamination and Friedel-Crafts alkylation process. This method allows the practical and atom-economical synthesis of valuable bridged aza-[n.2.1] skeletons (n=3-6) with wide substrate scope, and excellent diastereoselectivity and enantioselectivity by a chirality-transfer strategy. Moreover, the mechanistic rationale for this novel cascade cyclization is also strongly supported by control experiments, and is distinctively different from the related gold catalysis.
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Affiliation(s)
- Tong-De Tan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Xin-Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Hao-Zhen Bu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Guocheng Deng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Yang-Bo Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Rai-Shung Liu
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory for 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
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24
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Tan T, Zhu X, Bu H, Deng G, Chen Y, Liu R, Ye L. Copper‐Catalyzed Cascade Cyclization of Indolyl Homopropargyl Amides: Stereospecific Construction of Bridged Aza‐[
n
.2.1] Skeletons. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904698] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Tong‐De Tan
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Xin‐Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Hao‐Zhen Bu
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Guocheng Deng
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Yang‐Bo Chen
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
| | - Rai‐Shung Liu
- Department of ChemistryNational Tsing-Hua University Hsinchu Taiwan
| | - Long‐Wu Ye
- State Key Laboratory of Physical Chemistry of Solid SurfacesKey Laboratory for Chemical Biology of Fujian ProvinceCollege of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 China
- State Key Laboratory of Elemento-Organic ChemistryNankai University Tianjin 300071 China
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25
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Wu A, Feng Q, Sung HHY, Williams ID, Sun J. Synthesis of Eight‐Membered Lactams through Formal [6+2] Cyclization of Siloxy Alkynes and Vinylazetidines. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902866] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- An Wu
- Department of ChemistryThe Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Qiang Feng
- Department of ChemistryThe Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Herman H. Y. Sung
- Department of ChemistryThe Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Ian D. Williams
- Department of ChemistryThe Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Jianwei Sun
- Department of ChemistryThe Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
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26
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Wu A, Feng Q, Sung HHY, Williams ID, Sun J. Synthesis of Eight-Membered Lactams through Formal [6+2] Cyclization of Siloxy Alkynes and Vinylazetidines. Angew Chem Int Ed Engl 2019; 58:6776-6780. [PMID: 30888103 DOI: 10.1002/anie.201902866] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Indexed: 12/31/2022]
Abstract
A new approach for the efficient synthesis of eight-membered lactams through formal [6+2] cyclization of siloxy alkynes and vinylazetidines has been developed. Evidence from a chirality transfer experiment suggests that the reaction proceeds via a [3,3]-sigmatropic rearrangement from a ketene intermediate. This insight led to the development of alternative conditions and use of acyl chlorides as ketene precursors for the [6+2] reaction with vinylazetidines.
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Affiliation(s)
- An Wu
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Qiang Feng
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Herman H Y Sung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Ian D Williams
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Jianwei Sun
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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27
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Zhang J, Liao Z, Chen L, Zhu S. Rapid Access to Oxa‐Bridged Bicyclic Skeletons through Gold‐Catalyzed Tandem Rearrangement Reaction. Chemistry 2019; 25:9405-9409. [DOI: 10.1002/chem.201900807] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/12/2019] [Indexed: 01/26/2023]
Affiliation(s)
- Jiantao Zhang
- Key Laboratory of Functional Molecular Engineering of, Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 P. R. China
| | - Zhehui Liao
- Key Laboratory of Functional Molecular Engineering of, Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 P. R. China
| | - Lianfen Chen
- Key Laboratory of Functional Molecular Engineering of, Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 P. R. China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of, Guangdong ProvinceSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 P. R. China
- Guangdong Engineering Research Center for Green Fine ChemicalsSchool of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 P. R. China
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28
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Yang Y, Meng X, Zhu B, Jia Y, Cao X, Huang S. A Micellar Catalysis Strategy for Amidation of Alkynyl Bromides: Synthesis of Ynamides in Water. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801601] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Yunqin Yang
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass; College of Chemical Engineering; Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources; Nanjing Forestry University; 210037 Nanjing P. R. China
| | - Xiangtai Meng
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass; College of Chemical Engineering; Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources; Nanjing Forestry University; 210037 Nanjing P. R. China
| | - Baolong Zhu
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass; College of Chemical Engineering; Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources; Nanjing Forestry University; 210037 Nanjing P. R. China
| | - Ying Jia
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass; College of Chemical Engineering; Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources; Nanjing Forestry University; 210037 Nanjing P. R. China
| | - Xiaoji Cao
- College of Chemical Engineering; Zhejiang University of Technology; 310014 Zhejiang P.R. China
| | - Shenlin Huang
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass; College of Chemical Engineering; Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources; Nanjing Forestry University; 210037 Nanjing P. R. China
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29
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Liu Z, Hu X. Palladium‐Catalyzed Propargylic [n+2] Cycloaddition: An Efficient Strategy for Construction of Benzo‐Fused Medium‐Sized Heterocycles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhen‐Ting Liu
- Dalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 People's Republic of China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Xiang‐Ping Hu
- Dalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 People's Republic of China
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30
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Zhou Y, Wei YL, Rodriguez J, Coquerel Y. Enantioselective Organocatalytic Four-Atom Ring Expansion of Cyclobutanones: Synthesis of Benzazocinones. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810184] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yirong Zhou
- Aix Marseille Université; CNRS; Centrale Marseille, ISM2; 13397 Marseille France
- Key Laboratory of Functional Small Organic Molecules Ministry of Education; Jiangxi Normal University; 330022 Nanchang China
| | - Yun-Long Wei
- Aix Marseille Université; CNRS; Centrale Marseille, ISM2; 13397 Marseille France
| | - Jean Rodriguez
- Aix Marseille Université; CNRS; Centrale Marseille, ISM2; 13397 Marseille France
| | - Yoann Coquerel
- Aix Marseille Université; CNRS; Centrale Marseille, ISM2; 13397 Marseille France
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31
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Zhou Y, Wei YL, Rodriguez J, Coquerel Y. Enantioselective Organocatalytic Four-Atom Ring Expansion of Cyclobutanones: Synthesis of Benzazocinones. Angew Chem Int Ed Engl 2018; 58:456-460. [PMID: 30398303 DOI: 10.1002/anie.201810184] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/15/2018] [Indexed: 01/04/2023]
Abstract
An enantioselective Michael addition- four-atom ring expansion cascade reaction involving cyclobutanones activated by a N-aryl secondary amide group and ortho-amino nitrostyrenes has been developed for the preparation of functionalized eight-membered benzolactams using bifunctional aminocatalysts. Taking advantage of the secondary amide activating group, the eight-membered cyclic products could be further rearranged into their six-membered isomers having a glutarimide core under base catalysis conditions without erosion of optical purity, featuring an overall ring expansion- ring contraction strategy.
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Affiliation(s)
- Yirong Zhou
- Aix Marseille Université, CNRS, Centrale Marseille, ISM2, 13397, Marseille, France.,Key Laboratory of Functional Small Organic Molecules Ministry of Education, Jiangxi Normal University, 330022, Nanchang, China
| | - Yun-Long Wei
- Aix Marseille Université, CNRS, Centrale Marseille, ISM2, 13397, Marseille, France
| | - Jean Rodriguez
- Aix Marseille Université, CNRS, Centrale Marseille, ISM2, 13397, Marseille, France
| | - Yoann Coquerel
- Aix Marseille Université, CNRS, Centrale Marseille, ISM2, 13397, Marseille, France
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32
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Wang N, Gu QS, Li ZL, Li Z, Guo YL, Guo Z, Liu XY. Direct Photocatalytic Synthesis of Medium-Sized Lactams by C−C Bond Cleavage. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808890] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Na Wang
- Department of Chemistry and Shenzhen Grubbs Institute; Southern University of Science and Technology; Shenzhen 518055 China
- College of Materials Science & Engineering; Key Laboratory of Interface Science and Engineering in Advanced Materials; Ministry of Education; Taiyuan University of Technology; Shanxi 030024 China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies; Southern University of Science and Technology; Shenzhen 518055 China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies; Southern University of Science and Technology; Shenzhen 518055 China
| | - Zhuang Li
- Department of Chemistry and Shenzhen Grubbs Institute; Southern University of Science and Technology; Shenzhen 518055 China
| | - Yu-Long Guo
- Department of Chemistry and Shenzhen Grubbs Institute; Southern University of Science and Technology; Shenzhen 518055 China
| | - Zhen Guo
- College of Materials Science & Engineering; Key Laboratory of Interface Science and Engineering in Advanced Materials; Ministry of Education; Taiyuan University of Technology; Shanxi 030024 China
| | - Xin-Yuan Liu
- Department of Chemistry and Shenzhen Grubbs Institute; Southern University of Science and Technology; Shenzhen 518055 China
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33
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Wang N, Gu QS, Li ZL, Li Z, Guo YL, Guo Z, Liu XY. Direct Photocatalytic Synthesis of Medium-Sized Lactams by C-C Bond Cleavage. Angew Chem Int Ed Engl 2018; 57:14225-14229. [PMID: 30178906 DOI: 10.1002/anie.201808890] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/03/2018] [Indexed: 11/08/2022]
Abstract
Reported is a novel two-step ring-expansion strategy for expeditious synthesis of all ring sizes of synthetically challenging (hetero)aryl-fused medium-sized lactams from readily available 5-8-membered cyclic ketones. This step-economic approach features a remote radical (hetero)aryl migration from C to N under visible-light conditions. Broad substrate scope, good functional-group tolerance, high efficiency, and mild reaction conditions make this procedure very attractive. In addition, this method also provides expedient access to 13-15-membered macrolactams upon an additional one-step manipulation. Mechanistic studies indicate that the reaction involves an amidyl radical and is promoted by acid.
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Affiliation(s)
- Na Wang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China.,College of Materials Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi, 030024, China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zhuang Li
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yu-Long Guo
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zhen Guo
- College of Materials Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Shanxi, 030024, China
| | - Xin-Yuan Liu
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China
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34
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Guney T, Wenderski TA, Boudreau MW, Tan DS. Synthesis of Benzannulated Medium-ring Lactams via a Tandem Oxidative Dearomatization-Ring Expansion Reaction. Chemistry 2018; 24:13150-13157. [PMID: 29936701 PMCID: PMC6242278 DOI: 10.1002/chem.201802880] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Indexed: 12/19/2022]
Abstract
Medium-ring natural products exhibit diverse biological activities but such scaffolds are underrepresented in probe and drug discovery efforts due to the limitations of classical macrocyclization reactions. We report herein a tandem oxidative dearomatization-ring-expanding rearomatization (ODRE) reaction that generates benzannulated medium-ring lactams directly from simple bicyclic substrates. The reaction accommodates diverse aryl substrates (haloarenes, aryl ethers, aryl amides, heterocycles) and strategic incorporation of a bridgehead alcohol generates a versatile ketone moiety in the products amenable to downstream modifications. Cheminformatic analysis indicates that these medium rings access regions of chemical space that overlap with related natural products and are distinct from synthetic drugs, setting the stage for their use in discovery screening against novel biological targets.
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Affiliation(s)
- Tezcan Guney
- Dr. T. Guney, Dr. T. A. W enderski, Prof. Dr. D. S. Tan,
Chemical Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer
Center, 1275 York Avenue, Box 422, New York, New York, 10065, USA
| | - Todd A. Wenderski
- Dr. T. Guney, Dr. T. A. W enderski, Prof. Dr. D. S. Tan,
Chemical Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer
Center, 1275 York Avenue, Box 422, New York, New York, 10065, USA
| | - Matthew W. Boudreau
- M. W. Boudreau, Gerstner Sloan Kettering Summer
Undergraduate Research Program, Memorial Sloan Kettering Cancer Center, 1275 York
Avenue, Box 422, New York, New York, 10065, USA
| | - Derek S. Tan
- Dr. T. Guney, Dr. T. A. W enderski, Prof. Dr. D. S. Tan,
Chemical Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer
Center, 1275 York Avenue, Box 422, New York, New York, 10065, USA
- Prof. Dr. D. S. Tan, Tri-Institutional Research Program,
Memorial Sloan Kettering Cancer Center, 1275 York Avenue, Box 422, New York, New
York, 10065, USA
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35
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Ito M, Inoue D, Takaki A, Kanyiva KS, Shibata T. 8-exo
-dig
-Selective Cycloisomerization for the Synthesis of Dibenzo[b
,e
][1,4]diazocines Using Cationic AuI
Catalysts. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mamoru Ito
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
| | - Daisuke Inoue
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
| | - Asahi Takaki
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
| | - Kyalo Stephen Kanyiva
- Global Center for Science and Engineering; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
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36
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Kang G, Yamagami M, Vellalath S, Romo D. Enantioselective Synthesis of Medium‐Sized Lactams via Chiral α,β‐Unsaturated Acylammonium Salts. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802483] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Guowei Kang
- Department of Chemistry and Biochemistry Baylor University One Bear Place #97348 Waco TX 76798-7348 USA
| | - Masaki Yamagami
- Biomolecular Chemistry Laboratory Department of Chemistry Graduate School of Science 1-1 Machikaneyama, Toyonaka Osaka 560-0043 Japan
| | - Sreekumar Vellalath
- Department of Chemistry and Biochemistry Baylor University One Bear Place #97348 Waco TX 76798-7348 USA
| | - Daniel Romo
- Department of Chemistry and Biochemistry Baylor University One Bear Place #97348 Waco TX 76798-7348 USA
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37
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Kang G, Yamagami M, Vellalath S, Romo D. Enantioselective Synthesis of Medium-Sized Lactams via Chiral α,β-Unsaturated Acylammonium Salts. Angew Chem Int Ed Engl 2018; 57:6527-6531. [PMID: 29624841 DOI: 10.1002/anie.201802483] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Indexed: 11/12/2022]
Abstract
Medium-sized lactams are important structural motifs found in a variety of bioactive compounds and natural products but are challenging to prepare, especially in optically active form. A Michael addition/proton transfer/lactamization organocascade process is described that delivers medium-sized lactams, including azepanones, benzazepinones, azocanones, and benzazocinones, in high enantiopurity through the intermediacy of chiral α,β-unsaturated acylammonium salts. An unexpected indoline synthesis was also uncovered, and the benzazocinone skeleton was transformed into other complex heterocyclic derivatives, including spiroglutarimides, isoquinolinones, and δ-lactones.
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Affiliation(s)
- Guowei Kang
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, TX, 76798-7348, USA
| | - Masaki Yamagami
- Biomolecular Chemistry Laboratory, Department of Chemistry, Graduate School of Science, 1-1 Machikaneyama, Toyonaka, Osaka, 560-0043, Japan
| | - Sreekumar Vellalath
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, TX, 76798-7348, USA
| | - Daniel Romo
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, TX, 76798-7348, USA
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38
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Zhang J, Liao Z, Chen L, Jiang H, Zhu S. Catalytic [1,3] O-to-C Rearrangement: Rapid Access to Bridged Bicyclic Systems. Chemistry 2018; 24:6927-6931. [PMID: 29504644 DOI: 10.1002/chem.201801062] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Indexed: 12/19/2022]
Abstract
A catalytic [1,3] O-to-C rearrangement from enyne-ethers was developed for the rapid synthesis of diverse bridged bicyclic systems. In this reaction, a vinyl oxonium intermediate, generated in situ from enyne-ether, was the precursor for the [1,3] O-to-C rearrangement. This versatile protocol represents the first example of catalytic [1,3] O-to-C rearrangement based on ring-expansion strategy, enabling efficient access to bridged bicyclic scaffolds.
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Affiliation(s)
- Jiantao Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P.R. China
| | - Zhehui Liao
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P.R. China
| | - Lianfen Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P.R. China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P.R. China
| | - Shifa Zhu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, P.R. China
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39
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Wang YN, Yang LC, Rong ZQ, Liu TL, Liu R, Zhao Y. Pd-Catalyzed Enantioselective [6+4] Cycloaddition of Vinyl Oxetanes with Azadienes to Access Ten-Membered Heterocycles. Angew Chem Int Ed Engl 2018; 57:1596-1600. [DOI: 10.1002/anie.201711648] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/16/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Ya-Nong Wang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Li-Cheng Yang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Zi-Qiang Rong
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Tang-Lin Liu
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Ruoyang Liu
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Yu Zhao
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
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40
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Wang YN, Yang LC, Rong ZQ, Liu TL, Liu R, Zhao Y. Pd-Catalyzed Enantioselective [6+4] Cycloaddition of Vinyl Oxetanes with Azadienes to Access Ten-Membered Heterocycles. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711648] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Ya-Nong Wang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Li-Cheng Yang
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Zi-Qiang Rong
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Tang-Lin Liu
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Ruoyang Liu
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
| | - Yu Zhao
- Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543 Singapore
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41
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Mansfield SJ, Christensen KE, Thompson AL, Ma K, Jones MW, Mekareeya A, Anderson EA. Copper-Catalyzed Synthesis and Applications of Yndiamides. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706915] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | | | | | - Kai Ma
- Chemistry Research Laboratory; 12 Mansfield Road Oxford OX1 3TA UK
| | - Michael W. Jones
- Chemistry Research Laboratory; 12 Mansfield Road Oxford OX1 3TA UK
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42
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Mansfield SJ, Christensen KE, Thompson AL, Ma K, Jones MW, Mekareeya A, Anderson EA. Copper-Catalyzed Synthesis and Applications of Yndiamides. Angew Chem Int Ed Engl 2017; 56:14428-14432. [DOI: 10.1002/anie.201706915] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 08/11/2017] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Kai Ma
- Chemistry Research Laboratory; 12 Mansfield Road Oxford OX1 3TA UK
| | - Michael W. Jones
- Chemistry Research Laboratory; 12 Mansfield Road Oxford OX1 3TA UK
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