1
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Khoshbakhsh Foumani M, Conrad J, Frey W, Beifuss U. Flexible Approach for the Synthesis of Annulated 4 H-Pyrans Based on a Cu(I)-Catalyzed C-Allylation/O-Vinylation Reaction of Cyclic 1-Bromoallyl Tosylates with Cyclic and Acyclic 1,3-Dicarbonyls. J Org Chem 2022; 87:8316-8341. [PMID: 35732059 DOI: 10.1021/acs.joc.1c02997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Cu(I)-catalyzed reaction between five-, six-, seven-, and eight-membered cyclic 1-bromoallyl tosylates and five- and six-membered cyclic 1,3-dicarbonyls in DMF at 80 °C using Cs2CO3 as a base and 2-picolinic acid as an additive selectively delivers a wide array of bisannulated 4H-pyrans in a single step with yields up to 92%. The transformations are considered to proceed as intermolecular C-allylations/intramolecular O-vinylations. With six-membered cyclic 1-bromoallyl tosylates and acyclic β-ketoesters as substrates, the corresponding 5,6,7,8-tetrahydro-4H-chromene-3-carboxylates are obtained with yields up to 59%.
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Affiliation(s)
- Mehran Khoshbakhsh Foumani
- Bioorganische Chemie, Institut für Chemie, Universität Hohenheim, Garbenstraße 30, Stuttgart D-70599, Germany
| | - Jürgen Conrad
- Bioorganische Chemie, Institut für Chemie, Universität Hohenheim, Garbenstraße 30, Stuttgart D-70599, Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart D-70569, Germany
| | - Uwe Beifuss
- Bioorganische Chemie, Institut für Chemie, Universität Hohenheim, Garbenstraße 30, Stuttgart D-70599, Germany
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2
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Zhao JG, Wang DH. β-Selective Cu(II)-Catalyzed Dehydrogenative Enamination of Alkylbenzenes. Org Lett 2020; 22:9473-9477. [PMID: 33237776 DOI: 10.1021/acs.orglett.0c03430] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A Cu(II)-catalyzed dehydrogenative enamination that couples alkyl-substituted electron-rich arenes and N-fluorobenzenesulfonimide to forge enamine products is reported. This C-N bond-forming procedure occurs selectively at the β-position of the alkyl group. Both aniline and anisole derivatives are tolerated under these conditions, to afford styryl amines. A reaction mechanism involving quinone methide and styrene intermediates is proposed.
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Affiliation(s)
- Jian-Guo Zhao
- CAS Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry (SIOC), Chinese Academy of Sciences (CAS), 345 Lingling Rd., Shanghai 200032, China
| | - Dong-Hui Wang
- CAS Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry (SIOC), Chinese Academy of Sciences (CAS), 345 Lingling Rd., Shanghai 200032, China.,School of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Rd., Nanjing 210023, People's Republic of China
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3
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Choury M, Basilio Lopes A, Blond G, Gulea M. Synthesis of Medium-Sized Heterocycles by Transition-Metal-Catalyzed Intramolecular Cyclization. Molecules 2020; 25:E3147. [PMID: 32660105 PMCID: PMC7397130 DOI: 10.3390/molecules25143147] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/04/2020] [Accepted: 07/07/2020] [Indexed: 12/29/2022] Open
Abstract
Medium-sized heterocycles (with 8 to 11 atoms) constitute important structural components of several biologically active natural compounds and represent promising scaffolds in medicinal chemistry. However, they are under-represented in the screening of chemical libraries as a consequence of being difficult to access. In particular, methods involving intramolecular bond formation are challenging due to unfavorable enthalpic and entropic factors, such as transannular interactions and conformational constraints. The present review focuses on the synthesis of medium-sized heterocycles by transition-metal-catalyzed intramolecular cyclization, which despite its drawbacks remains a straightforward and attractive synthesis strategy. The obtained heterocycles differ in their nature, number of heteroatoms, and ring size. The methods are classified according to the metal used (palladium, copper, gold, silver), then subdivided according to the type of bond formed, namely carbon-carbon or carbon-heteroatom.
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Affiliation(s)
| | | | | | - Mihaela Gulea
- Université de Strasbourg, CNRS, Laboratoire d’Innovation Thérapeutique, LIT UMR 7200, F-67000 Strasbourg, France; (M.C.); (A.B.L.); (G.B.)
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4
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Kaur N, Devi M, Verma Y, Grewal P, Jangid NK, Dwivedi J. Seven and higher-membered oxygen heterocycles: Metal and non-metal. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1579916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Meenu Devi
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Yamini Verma
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | - Pooja Grewal
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
| | | | - Jaya Dwivedi
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
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5
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Kumar P, Zainul O, Camarda FM, Jiang T, Mannone JA, Huang W, Laughlin ST. Caged Cyclopropenes with Improved Tetrazine Ligation Kinetics. Org Lett 2019; 21:3721-3725. [DOI: 10.1021/acs.orglett.9b01177] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Pratik Kumar
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - Omar Zainul
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - Frank M. Camarda
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - Ting Jiang
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - John A. Mannone
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - Wei Huang
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - Scott T. Laughlin
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
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6
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, Rajasthan, India
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7
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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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8
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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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9
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Kumar P, Zainul O, Laughlin ST. Inexpensive multigram-scale synthesis of cyclic enamines and 3-N spirocyclopropyl systems. Org Biomol Chem 2018; 16:652-656. [DOI: 10.1039/c7ob02659e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclic enamines are important synthons for many synthetic and pharmacological targets. We report a method for the synthesis of cyclic enamines with exocyclic double bonds and four- to seven-membered rings that permits usage of common N-protecting groups and tolerates functionality round the ring system.
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Affiliation(s)
- Pratik Kumar
- Department of Chemistry
- Stony Brook University
- Stony Brook
- USA
| | - Omar Zainul
- Department of Chemistry
- Stony Brook University
- Stony Brook
- USA
| | - Scott T. Laughlin
- Department of Chemistry
- Stony Brook University
- Stony Brook
- USA
- Institute for Chemical Biology and Drug Discovery
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10
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Li J, Lin L, Hu B, Lian X, Wang G, Liu X, Feng X. Bimetallic Gold(I)/Chiral
N
,
N′
‐Dioxide Nickel(II) Asymmetric Relay Catalysis: Chemo‐ and Enantioselective Synthesis of Spiroketals and Spiroaminals. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601701] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Jun Li
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Lili Lin
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Bowen Hu
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiangjin Lian
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Gang Wang
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
- Collaborative Innovation Center of Chemical Science and Engineering Tianjin China
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11
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Li J, Lin L, Hu B, Lian X, Wang G, Liu X, Feng X. Bimetallic Gold(I)/Chiral
N
,
N′
‐Dioxide Nickel(II) Asymmetric Relay Catalysis: Chemo‐ and Enantioselective Synthesis of Spiroketals and Spiroaminals. Angew Chem Int Ed Engl 2016; 55:6075-8. [DOI: 10.1002/anie.201601701] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Indexed: 02/03/2023]
Affiliation(s)
- Jun Li
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Lili Lin
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Bowen Hu
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiangjin Lian
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Gang Wang
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry and Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 China
- Collaborative Innovation Center of Chemical Science and Engineering Tianjin China
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12
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Campbell CD, Greenaway RL, Holton OT, Walker PR, Chapman HA, Russell CA, Carr G, Thomson AL, Anderson EA. Ynamide carbopalladation: a flexible route to mono-, bi- and tricyclic azacycles. Chemistry 2015; 21:12627-39. [PMID: 26189754 PMCID: PMC4557052 DOI: 10.1002/chem.201501710] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Indexed: 11/09/2022]
Abstract
Bromoenynamides represent precursors to a diversity of azacycles by a cascade sequence of carbopalladation followed by cross-coupling/electrocyclization, or reduction processes. Full details of our investigations into intramolecular ynamide carbopalladation are disclosed, which include the first examples of carbopalladation/cross-coupling reactions using potassium organotrifluoroborate salts; and an understanding of factors influencing the success of these processes, including ring size, and the nature of the coupling partner. Additional mechanistic observations are reported, such as the isolation of triene intermediates for electrocyclization. A variety of hetero-Diels-Alder reactions using the product heterocycles are also described, which provide insight into Diels-Alder regioselectivity.
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Affiliation(s)
- Craig D Campbell
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (U.K.) edward E-mail:
| | - Rebecca L Greenaway
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (U.K.) edward E-mail:
| | - Oliver T Holton
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (U.K.) edward E-mail:
| | - P Ross Walker
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (U.K.) edward E-mail:
| | - Helen A Chapman
- Syngenta Ltd. Jealott's Hill International Research CentreBracknell, Berkshire, RG42 6EY (U.K.)
| | - C Adam Russell
- Syngenta Ltd. Jealott's Hill International Research CentreBracknell, Berkshire, RG42 6EY (U.K.)
| | - Greg Carr
- AstraZenecaAlderley Park, Macclesfield, SK10 4TF (U.K.)
| | - Amber L Thomson
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (U.K.) edward E-mail:
| | - Edward A Anderson
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (U.K.) edward E-mail:
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13
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Synthesis of multisubstituted cyclobutenones via copper-catalyzed intramolecular C-vinylation of ketones. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Liu H, Zhou Y, Yan X, Chen C, Liu Q, Xi C. Copper-mediated amidation of alkenylzirconocenes with acyl azides: formation of enamides. Org Lett 2013; 15:5174-7. [PMID: 24083640 DOI: 10.1021/ol402212g] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Copper-mediated amidation of alkenylzirconocenes generated in situ from alkynes and zirconocenes with acyl azides is accomplished under mild conditions. The reaction can be used to prepare various enamides.
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Affiliation(s)
- Hailan Liu
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University , Beijing 100084, China , and Institute of Chemistry and Chemical Engineering, Hebei Normal University , Shijiazhuang 050091, China
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15
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Lin H, Sun D. RECENT SYNTHETIC DEVELOPMENTS AND APPLICATIONS OF THE ULLMANN REACTION. A REVIEW. ORG PREP PROCED INT 2013; 45. [PMID: 24223434 DOI: 10.1080/00304948.2013.816208] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Hao Lin
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, Hilo, HI 96720, USA
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16
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Liu H, Yan X, Chen C, Liu Q, Xi C. Copper-mediated electrophilic imination of alkenylzirconocenes with O-benzoyl ketoximes and aldoximes. Chem Commun (Camb) 2013; 49:5513-5. [PMID: 23660950 DOI: 10.1039/c3cc41574k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copper-mediated electrophilic imination of alkenylzirconocenes generated in situ from alkynes and zirconocenes is accomplished under mild reaction conditions. The reaction can be used to prepare various 2-azadienes.
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Affiliation(s)
- Hailan Liu
- Institute of Chemistry and Chemical Engineering, Hebei Normal University, Shijiazhuang 050091, China
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17
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Beletskaya IP, Cheprakov AV. The Complementary Competitors: Palladium and Copper in C–N Cross-Coupling Reactions. Organometallics 2012. [DOI: 10.1021/om300683c] [Citation(s) in RCA: 348] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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18
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Noé MS, Ríos AC, Tor Y. Design, synthesis, and spectroscopic properties of extended and fused pyrrolo-dC and pyrrolo-C analogs. Org Lett 2012; 14:3150-3. [PMID: 22646728 PMCID: PMC3426657 DOI: 10.1021/ol3012327] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The syntheses of four fluorescent nucleoside analogs, related to pyrrolo-C (PyC) and pyrrolo-dC (PydC) through the conjugation or fusion of a thiophene moiety, are described. A thorough photophysical analysis of the nucleosides, in comparison to PyC, is reported.
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Affiliation(s)
- Mary S Noé
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0358, USA
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19
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Meyet CE, Pierce CJ, Larsen CH. A single Cu(II) catalyst for the three-component coupling of diverse nitrogen sources with aldehydes and alkynes. Org Lett 2012; 14:964-7. [PMID: 22260170 DOI: 10.1021/ol2029492] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A single Cu(II) catalyst without the addition of ligand or base couples a diverse range of nitrogen sources with alkynes and aldehydes bearing alkyl, halogenated, silyl, aryl, and heteroaryl groups. The first example of a copper-catalyzed alkynylation involving p-toluenesulfonamide provides high yields of N-Ts-protected propargylamines. The superior activity of copper(II) triflate also allows this three-component alkynylation to incorporate a ketone.
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Affiliation(s)
- Courtney E Meyet
- Department of Chemistry, University of California, Riverside, California 92521, USA
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20
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21
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Song L, Liu K, Li C. Efficient and Regioselective 9-Endo Cyclization of α-Carbamoyl Radicals. Org Lett 2011; 13:3434-7. [DOI: 10.1021/ol201180g] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Liyan Song
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Kun Liu
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
| | - Chaozhong Li
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
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22
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Chen L, Shi M, Li C. Synthesis of Functionalized γ-Lactams via Copper-Catalyzed Intramolecular C-Vinylation of Activated Methylene Compounds. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090281] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Xu W, Ghiviriga I, Chen QY, Dolbier WR. Magnesium iodide promoted defluorinative reactions of 2,2-difluorocyclopropyl aryl ketones with aryl imines: A new, general synthesis of 2-alkylideneazetidines. J Fluor Chem 2010. [DOI: 10.1016/j.jfluchem.2010.06.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Liao Q, Zhang L, Wang F, Li S, Xi C. Copper-Catalyzed Double N-Vinylation of Aromatic Amines: An Efficient Synthesis of Various Substituted N-Arylpyrroles. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000665] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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Synthesis of multisubstituted furans via copper-catalyzed intramolecular O-vinylation of ketones with vinyl bromides. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.05.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Wang Y, Liao Q, Xi C. Copper-Catalyzed Amination of Alkenyl Halides: Efficient Method for the Synthesis of Enamines. Org Lett 2010; 12:2951-3. [DOI: 10.1021/ol1009416] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuxing Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Qian Liao
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Chanjuan Xi
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
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27
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Sun C, Fang Y, Li S, Zhang Y, Zhao Q, Zhu S, Li C. Synthesis of enol lactones via Cu(I)-catalyzed intramolecular O-vinylation of carboxylic acids. Org Lett 2010; 11:4084-7. [PMID: 19689116 DOI: 10.1021/ol9015578] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
With the catalysis of CuI/trans-N,N'-dimethylcyclohexane-1,2-diamine, a number of carboxylic acids underwent efficient intramolecular O-vinylation with vinyl bromides leading to the synthesis of the corresponding five- and six-membered enol lactones. The same catalytic system also led to the efficient cycloisomerization of alkynoic acids.
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Affiliation(s)
- Changhui Sun
- Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
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Abstract
The utility of copper-mediated cross-coupling reactions has been significantly increased by the development of mild reaction conditions and the ability to employ catalytic amounts of copper. The use of diamine-based ligands has been important in these advances and in this review we discuss these systems, including the choice of reaction conditions and applications in the synthesis of pharmaceuticals, natural products and designed materials.
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Affiliation(s)
- David S Surry
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA. ; Tel: +1-617-253-1885
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Smith JA, Molesworth PP, Ryan JH. Chapter 7: Seven-Membered Rings. PROGRESS IN HETEROCYCLIC CHEMISTRY 2009. [DOI: 10.1016/s0959-6380(09)70044-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Zhao Q, Li L, Fang Y, Sun D, Li C. “Ligand-Free” CuI-Catalyzed Highly Efficient Intramolecular S-Vinylation of Thiols with Vinyl Chlorides and Bromides. J Org Chem 2008; 74:459-62. [DOI: 10.1021/jo802235e] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qiwu Zhao
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, People's Republic of China, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China, and Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Ling Li
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, People's Republic of China, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China, and Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Yewen Fang
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, People's Republic of China, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China, and Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Deqian Sun
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, People's Republic of China, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China, and Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
| | - Chaozhong Li
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, People's Republic of China, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China, and Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai 200092, People's Republic of China
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