1
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Lu M, Liu Y. Gold-Catalyzed Regio- and Stereoselective Alkenylation of Quinoline N-Oxides with Allenamides. Org Lett 2024; 26:5493-5499. [PMID: 38905136 DOI: 10.1021/acs.orglett.4c01796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/23/2024]
Abstract
A gold-catalyzed cycloaddition/ring opening of allenamides with quinoline N-oxides has been developed, which provides C2-alkenylated quinolines with high E selectivity in moderate to high yields. It is noted that quinoline N-oxides with a C8 or C7 substituent are crucial for this catalytic reaction.
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Affiliation(s)
- Mingduo Lu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People's Republic of China
| | - Yuanhong Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, People's Republic of China
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2
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Zhao K, Liu Q, Cheng S, Zhao Z, Li X. PhI(OAc) 2-Mediated Regioselective Hydrothiolation of Allenamides with Thiophenol via a Radical Process: Synthesis of Vinyl Sulfides. J Org Chem 2023; 88:15626-15638. [PMID: 37885139 DOI: 10.1021/acs.joc.3c01605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
An efficient PhI(OAc)2-mediated regioselective hydrothiolation of allenamides with thiophenol via a radical process was developed to create a workable route to vinyl sulfides. The reaction exhibits a good functional group tolerance and high efficiency, affording the products in good to excellent yields. Mechanistic investigations indicated that the radical cascade proceeds through an allyl radical intermediate, which is formed via the addition of the PhS radical to the central carbon of allenamides. Moreover, the reaction was also efficient with selenophenol, providing the corresponding product, vinyl selenide, in a 99% yield.
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Affiliation(s)
- Kun Zhao
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, Sichuan 610041, P. R. China
| | - Qingsong Liu
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, Sichuan 610041, P. R. China
| | - Song Cheng
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, Sichuan 610041, P. R. China
| | - Zhigang Zhao
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, Sichuan 610041, P. R. China
| | - Xiaoxiao Li
- Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, Sichuan 610041, P. R. China
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3
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Fuchibe K, Sakon K, Suto K, Eto R, Nakazono S, Ichikawa J. Fluorine-Activated and -Directed Allene Cycloadditions with Nitrile Oxides and Imine Oxides: Synthesis of Ring-Fluorinated Isoxazole Derivatives. Org Lett 2023; 25:7258-7262. [PMID: 37751512 DOI: 10.1021/acs.orglett.3c02879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
In this study, 1,1-difluoroallenes underwent a regioselective [2+3] cycloaddition with nitrile oxides and imine oxides in the presence of a AuCl catalyst. (E)-4-Alkylidene-5,5-difluoroisoxazolines and -isoxazolidines were obtained in regioselective and diastereoselective manners by employing aurated difluoroallylic cation intermediates. The synthesized 5,5-difluoroisoxazolines were readily aromatized through dehydrofluorination or allylic fluorine substitution to provide 5-fluoroisoxazoles.
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Affiliation(s)
- Kohei Fuchibe
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Kazuki Sakon
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Kyosuke Suto
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Reo Eto
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Sho Nakazono
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
| | - Junji Ichikawa
- Sagami Chemical Research Institute, 2743-1 Hayakawa, Ayase, Kanagawa 252-1193, Japan
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4
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Borah B, Veeranagaiah NS, Sharma S, Patat M, Prasad MS, Pallepogu R, Chowhan LR. Stereoselective synthesis of CF 3-containing spirocyclic-oxindoles using N-2,2,2-trifluoroethylisatin ketimines: an update. RSC Adv 2023; 13:7063-7075. [PMID: 36875873 PMCID: PMC9977426 DOI: 10.1039/d3ra00017f] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 02/15/2023] [Indexed: 03/05/2023] Open
Abstract
The introduction of fluorine-containing groups into organic molecules either changes or improves the characteristics of the target compounds. On the other hand, spirocyclic-oxindoles featuring C-3 functionalized sp3-hybridized carbon atoms of three-dimensional orthogonally shaped molecules were well recognized in the core structure of varied natural products and synthetic pharmaceutical targets. Consequently, the construction of spirooxindoles by an elegant synthetic approach with efficient stereocontrol has received tremendous interest over the past decades. In this context of the synergic combination of the features associated with fluorine-containing compounds and the synthetic and medicinal efficiency associated with spirooxindoles, the stereodivergent installation of CF3 groups embedded with spirooxindoles is of increasing academic and scientific interest. This mini-review article is dedicated to demonstrating a critical overview of the recent stereoselective synthesis of spirocyclic-oxindoles featuring trifluoromethyl groups by employing the reactivity of N-2,2,2-trifluoroethylisatin ketimines as an efficient and easily prepared synthon, and covers the literature reports from 2020 to date. Besides exploring the advancements accomplished in this area, we also investigate the limitations associated with reaction discovery, mechanistic rationalization, and future applications.
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Affiliation(s)
- Biplob Borah
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar-382030 India
| | - Naveena S Veeranagaiah
- Department of Chemistry, Central University of Karnataka, Kalaburagi Karnataka-585367 India
| | - Samrita Sharma
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar-382030 India
| | - Mihir Patat
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar-382030 India
| | - Madavi S Prasad
- Department of Chemistry, Asymmetric Synthesis and Catalysis Laboratory, Central University of Tamil Nadu (CUTN) Tiruvarur 610 005 India
| | - Raghavaiah Pallepogu
- Department of Chemistry, Central University of Karnataka, Kalaburagi Karnataka-585367 India
| | - L Raju Chowhan
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar-382030 India
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5
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Borah B, Raju Chowhan L. Recent updates on the stereoselective synthesis of structurally functionalized spiro-oxindoles mediated by isatin N, N´‑cyclic azomethine imine 1, 3-dipoles. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Mishra DR, Panda BS, Nayak S, Panda J, Mohapatra S. Recent Advances in the Synthesis of 5‐Membered
N
‐Heterocycles via Rhodium Catalysed Cascade Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202200531] [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)
- Deepak R. Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Bhabani S. Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Jasmine Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
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7
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Xu B, Zhang Z, Han J, Gu G, Zhang J. Enantioselectivity Tunable Gold‐catalyzed Intermolecular [3+2] Cycloaddition of
N
‐Allenamides
with Nitrones. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200017] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bing Xu
- Department of Chemistry Fudan University, 2005 Songhu Road Shanghai 200438 P. R. China
- Zhuhai Fudan Innovation Institute Zhuhai 519000 China
| | - Zhan‐Ming Zhang
- Department of Chemistry Fudan University, 2005 Songhu Road Shanghai 200438 P. R. China
| | - Jie Han
- Department of Chemistry Fudan University, 2005 Songhu Road Shanghai 200438 P. R. China
- Zhuhai Fudan Innovation Institute Zhuhai 519000 China
| | - Guangxin Gu
- Department of Materials Science Fudan University, 2005 Songhu Road Shanghai 200438 P.R China
- Zhuhai Fudan Innovation Institute Zhuhai 519000 China
| | - Junliang Zhang
- Department of Chemistry Fudan University, 2005 Songhu Road Shanghai 200438 P. R. China
- Zhuhai Fudan Innovation Institute Zhuhai 519000 China
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8
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Zuccarello G, Escofet I, Caniparoli U, Echavarren AM. New-Generation Ligand Design for the Gold-Catalyzed Asymmetric Activation of Alkynes. Chempluschem 2021; 86:1283-1296. [PMID: 34472729 PMCID: PMC8457203 DOI: 10.1002/cplu.202100232] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/09/2021] [Indexed: 01/01/2023]
Abstract
Gold(I) catalysts are ideal for the activation of alkynes under very mild conditions. However, unlike allenes or alkenes, the triple bond of alkynes cannot be prochiral. In addition, the linear coordination displayed by gold(I) complexes places the chiral ligand far away from the substrate resulting in an inefficient transfer of chiral information. This poses a significant challenge for the achievement of high enantiocontrol in gold(I)-catalyzed reactions of alkynes. Although considerable progress on enantioselective gold(I)-catalyzed transformations has recently been achieved, the asymmetric activation of non-prochiral alkyne-containing small molecules still represents a great challenge. Herein we summarize recent advances in intra- and intermolecular enantioselective gold(I)-catalyzed reactions involving alkynes, discussing new chiral ligand designs that lie at the basis of these developments. We also focus on the mode of action of these catalysts, their possible limitations towards a next-generation of more efficient ligand designs. Finally, square planar chiral gold(III) complexes, which offer an alternative to chiral gold(I) complexes, are also discussed.
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Affiliation(s)
- Giuseppe Zuccarello
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology (BIST)Av. Països Catalans 1643007TarragonaSpain
- Departament de Química Orgànica i AnalíticaUniversitat Rovira i Virgili (URV)C/Marcel⋅lí Domingo s/n43007TarragonaSpain
| | - Imma Escofet
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology (BIST)Av. Països Catalans 1643007TarragonaSpain
- Departament de Química Orgànica i AnalíticaUniversitat Rovira i Virgili (URV)C/Marcel⋅lí Domingo s/n43007TarragonaSpain
| | - Ulysse Caniparoli
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology (BIST)Av. Països Catalans 1643007TarragonaSpain
- Departament de Química Orgànica i AnalíticaUniversitat Rovira i Virgili (URV)C/Marcel⋅lí Domingo s/n43007TarragonaSpain
| | - Antonio M. Echavarren
- Institute of Chemical Research of Catalonia (ICIQ)Barcelona Institute of Science and Technology (BIST)Av. Països Catalans 1643007TarragonaSpain
- Departament de Química Orgànica i AnalíticaUniversitat Rovira i Virgili (URV)C/Marcel⋅lí Domingo s/n43007TarragonaSpain
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9
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Zhong X, Tan J, Qiao J, Zhou Y, Lv C, Su Z, Dong S, Feng X. Catalytic asymmetric synthesis of spirocyclobutyl oxindoles and beyond via [2+2] cycloaddition and sequential transformations. Chem Sci 2021; 12:9991-9997. [PMID: 34377393 PMCID: PMC8317662 DOI: 10.1039/d1sc02681j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 06/22/2021] [Indexed: 02/05/2023] Open
Abstract
Efficient asymmetric synthesis of a collection of small molecules with structural diversity is highly important to drug discovery. Herein, three distinct types of chiral cyclic compounds were accessible by enantioselective catalysis and sequential transformations. Highly regio- and enantioselective [2+2] cycloaddition of (E)-alkenyloxindoles with the internal C[double bond, length as m-dash]C bond of N-allenamides was achieved with N,N'-dioxide/Ni(OTf)2 as the catalyst. Various optically active spirocyclobutyl oxindole derivatives were obtained under mild conditions. Moreover, formal [4+2] cycloaddition products occurring at the terminal C[double bond, length as m-dash]C bond of N-allenamides, dihydropyran-fused indoles, were afforded by a stereospecific sequential transformation with the assistance of a catalytic amount of Cu(OTf)2. In contrast, performing the conversion under air led to the formation of γ-lactones via the water-involved deprotection and rearrangement process. Experimental studies and DFT calculations were performed to probe the reaction mechanism.
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Affiliation(s)
- Xia Zhong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
| | - Jiuqi Tan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
| | - Jianglin Qiao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
| | - Yuqiao Zhou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
| | - Cidan Lv
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 China http://www.scu.edu.cn/chem_asl/
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10
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Suárez-Rodríguez T, Suárez-Sobrino ÁL, Ballesteros A. Gold(I)-Catalyzed [8+2]-Cycloaddition of 8-Aryl-8-azaheptafulvenes with Allenamides and Ynamides: Regioselective Synthesis of Dihydrocycloheptapyrrole Derivatives. Chemistry 2021; 27:7154-7159. [PMID: 33567146 DOI: 10.1002/chem.202005348] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Indexed: 01/01/2023]
Abstract
Gold(I)-catalyzed higher-order [8+2] cycloadditions of 8-aryl-8-azaheptafulvenes 1 with allenamides 2 and ynamides 3 were studied. 1,8-Dihydrocycloheptapyrroles 4 were achieved by a regioselective [8+2] cycloaddition of azaheptafulvenes 1 and allenamides 2 in the presence of (2,4-ditBuC6 H3 O)3 PAuNTf2 as catalyst. Besides, ynamides 3 and 8-aryl-8-azaheptafulvenes 1, undergo a regioselective [8+2] cycloaddition, to give 2-amido-1,4-dihydrocycloheptapyrroles 7 in the presence of JohnPhosAuNTf2 as catalyst. Both reactions take place with good yields and with a variety of substituents. A plausible mechanism hypothesis suggests a nucleophilic attack of the 8-azaheptafulvene to the gold activated electron rich allene or alkyne moieties of the allenamide and ynamide, respectively.
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Affiliation(s)
- Tatiana Suárez-Rodríguez
- Departamento de Química Orgánica e Inorgánica, Instituto de Química Organometálica "Enrique Moles", Universidad de Oviedo, Julián Clavería 8, 33006, Oviedo, Spain
| | - Ángel L Suárez-Sobrino
- Departamento de Química Orgánica e Inorgánica, Instituto de Química Organometálica "Enrique Moles", Universidad de Oviedo, Julián Clavería 8, 33006, Oviedo, Spain
| | - Alfredo Ballesteros
- Departamento de Química Orgánica e Inorgánica, Instituto de Química Organometálica "Enrique Moles", Universidad de Oviedo, Julián Clavería 8, 33006, Oviedo, Spain
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11
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Wang C, Xu G, Shao Y, Tang S, Sun J. Gold-Catalyzed Intermolecular Formal [4 + 2 + 2]-Cycloaddition of Anthranils with Allenamides. Org Lett 2020; 22:5990-5994. [PMID: 32678606 DOI: 10.1021/acs.orglett.0c02083] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The construction of eight-membered rings is a challenging issue due to unfavorable transannular strain and entropic barriers. We report herein a gold-catalyzed formal [4 + 2 + 2] cycloaddition reaction of anthranils with allenamides to deliver oxa-bridged eight-membered heterocycles in accepted yields with unique E/Z configuration. Moreover, the asymmetric [4 + 2 + 2] cycloaddition by using chiral phosphoramidite gold catalyst has also been conducted.
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Affiliation(s)
- Cheng Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Guangyang Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Ying Shao
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Shengbiao Tang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
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12
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PhI(OAc)2-mediated synthesis of propargylic N, O-acetals by 1, 2-addition of alcohols to allenamides. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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13
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Abstract
The 1,3-dipolar cycloaddition reaction is a powerful and versatile strategy for
the synthesis of carbocyclic and heterocyclic five-membered rings. Herein, the most recent
developments on the [3+2] cycloaddition reactions using allenes acting either as dipolarophiles
or 1,3-dipole precursors, are highlighted. The recent contributions on the
phosphine- and transition metal-catalyzed [3+2] annulations involving allenes as substrates
are also covered, with the exception of those in which the formation of a 1,3-dipole
(or synthetic equivalent) is not invoked.
This review summarizes the most relevant research in which allenes are used as building
blocks for the construction of structurally diverse five-membered rings via [3+2] annulation
reactions.
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Affiliation(s)
- Ana L. Cardoso
- CQC and Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Maria I.L. Soares
- CQC and Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
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14
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Yuan X, Tan X, Ding N, Liu Y, Li X, Zhao Z. NIS-promoted intermolecular bis-sulfenylation of allenamides via a two-step radical process: synthesis of 1,3-dithioethers. Org Chem Front 2020. [DOI: 10.1039/d0qo00690d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The first report of NIS-promoted two-step radical addition of thiols to allenamides to provide an efficient route for accessing 1,3-dithioethers.
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Affiliation(s)
- Xiao Yuan
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- School of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- PR China
| | - Xiaoju Tan
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- School of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- PR China
| | - Na Ding
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- School of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- PR China
| | - Yongchun Liu
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- School of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- PR China
| | - Xiaoxiao Li
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- School of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- PR China
| | - Zhigang Zhao
- Key Laboratory of Basic Chemistry of the State Ethnic Commission
- School of Chemistry and Environment
- Southwest Minzu University
- Chengdu 610041
- PR China
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15
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Liu Y, Ding N, Tan X, Li X, Zhao Z. Iron(ii)-chloride-catalyzed regioselective azidation of allenamides with TMSN3. Chem Commun (Camb) 2020; 56:7507-7510. [DOI: 10.1039/c9cc10056c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The first report of iron catalyzed azidation of allenamides via radical process to provide an efficient route for accessing allyl azides.
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Affiliation(s)
- Yongchun Liu
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- People's Republic of China
| | - Na Ding
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- People's Republic of China
| | - Xiaoju Tan
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- People's Republic of China
| | - Xiaoxiao Li
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- People's Republic of China
| | - Zhigang Zhao
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- People's Republic of China
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16
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Chen L, Yu J, Tang S, Shao Y, Sun J. Gold-Catalyzed Highly Diastereoselective Oxy-Propargylamination of Allenamides with C-Alkynyl N-Boc N,O-Acetals. Org Lett 2019; 21:9050-9054. [DOI: 10.1021/acs.orglett.9b03449] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Long Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jianliang Yu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Shengbiao Tang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Ying Shao
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
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17
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Yan F, Liang H, Ai B, Liang W, Jiao L, Yao S, Zhao P, Liu Q, Dong Y, Liu H. Palladium-catalyzed intermolecular [4 + 2] formal cycloaddition with (Z)-3-iodo allylic nucleophiles and allenamides. Org Biomol Chem 2019; 17:2651-2656. [PMID: 30778484 DOI: 10.1039/c8ob03072c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly chemo- and regioselective [4 + 2] formal cycloaddition of (Z)-3-iodo allylic nucleophiles and allenamides catalyzed by palladium is reported. The methodology proceeds under mild reaction conditions and is tolerant of alkyl and aryl functional groups. The SN2' substitution at the proximal C[double bond, length as m-dash]C bond performed against the Heck or SN2 pathway delivered a variety of 2-amino-dihydropyrans and 2-amino-tetrahydropiperidines in moderate to satisfactory yields. The [4 + 2] formal cycloaddition derivatives are convertible to interesting scaffolds 2,6,7,7a-tetrahydropyrano[2,3-b]pyrrole and 2,6,7,7a-tetrahydro-1H-pyrrolo[2,3-b]pyridine derivatives via ring-closing metathesis (RCM) with Grubbs catalyst II.
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Affiliation(s)
- Fachao Yan
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China.
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18
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Kaya Z, Andna L, Matt D, Bentouhami E, Djukic JP, Armspach D. A Comparative Study of Confining Ligands Derived from Methylated Cyclodextrins in Gold-Catalyzed Cycloisomerization of 1,6-Enynes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900631] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zeyneb Kaya
- Equipe Confinement Moléculaire et Catalyse; Institut de Chimie, UMR 7177 CNRS; 4, rue Blaise Pascal CS90032 67081 Strasbourg cedex France
- Laboratoire de Chimie Inorganique et Nanostructures; Faculté de Technologie; Université Ferhat Abbas; Sétif-1, Campus El Bez Sétif 19000 Algeria
| | - Lucile Andna
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse; Institut de Chimie, UMR 7177 CNRS; 4, rue Blaise Pascal CS90032 67081 Strasbourg cedex France
| | - Dominique Matt
- Laboratoire de Chimie Inorganique Moléculaire et Catalyse; Institut de Chimie, UMR 7177 CNRS; 4, rue Blaise Pascal CS90032 67081 Strasbourg cedex France
| | - Embarek Bentouhami
- Laboratoire de Chimie Inorganique et Nanostructures; Faculté de Technologie; Université Ferhat Abbas; Sétif-1, Campus El Bez Sétif 19000 Algeria
| | - Jean-Pierre Djukic
- Laboratoire de Chimie et Systémique Organo-Métalliques; Institut de Chimie, UMR 7177 CNRS; 4, rue Blaise Pascal CS90032 67081 Strasbourg cedex France
| | - Dominique Armspach
- Equipe Confinement Moléculaire et Catalyse; Institut de Chimie, UMR 7177 CNRS; 4, rue Blaise Pascal CS90032 67081 Strasbourg cedex France
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19
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Mascareñas JL, Varela I, López F. Allenes and Derivatives in Gold(I)- and Platinum(II)-Catalyzed Formal Cycloadditions. Acc Chem Res 2019; 52:465-479. [PMID: 30640446 PMCID: PMC6497370 DOI: 10.1021/acs.accounts.8b00567] [Citation(s) in RCA: 148] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Indexed: 12/17/2022]
Abstract
Cycloaddition reactions, by involving the formation of at least two bonds and one cycle in a single operation, represent one of the more practical ways to assemble carbo- and heterocyclic structures from simple acyclic precursors. Especially appealing are formal cycloadditions promoted by transition metals, owing to the ability of these reagents to open mechanisms that are not accessible using classical chemistry. Therefore, along the years, a great variety of annulations based on first-, and particularly second-row transition metals have been discovered. Most of these reactions involve inner sphere mechanisms, with the metal participating via standard oxidative addition or reductive elimination processes. Curiously, metals of the third row like platinum and, especially, gold remained largely unexplored, likely because of the belief that they were inert and expensive. However, from the beginning of this century, many groups realized that these metals can open very interesting mechanistic scenarios and promote novel types of transformations. In particular, the π-acidic, carbophilic behavior of gold(I) complexes, together with the possibility of tuning their reactivity using designed ligands, has triggered important activity in the field. Many gold-catalyzed transformations involved addition or cycloisomerization processes, but during recent years, there have been also important advances in the development of formal cycloaddition reactions. While many of these reactions rely on the activation of alkynes, there has been an increasing number of reports that exploit the peculiar reactivities of allenes and derivatives. In this Account, we present recent efforts on the development of platinum- and gold-catalyzed formal cycloadditions of allenes. For the sake of simplicity, we only include annulations initiated by a direct metal-promoted activation of the allene moiety. Thus, alternative Pt- or Au-catalyzed reactions wherein the allene does not interact with the metal catalyst are not covered. Upon activation by the metals, allenes generate allyl-cation alkenylmetal species that can behave as 1,2- or 1,3-carbon dipoles in cycloaddition processes. Especially relevant is the reactivity of allenamides. The presence of the amide substituent provides for the generation of gold intermediates with a good balance of reactivity and stability, which can therefore react with the corresponding partners in a controlled manner. Moreover, despite the difficulties associated with the transfer of stereochemical information from chiral linear gold(I) complexes, a variety of enantioselective gold-catalyzed annulations have been discovered. This Account is organized considering the number of atoms engaged in the annulation process, and when possible, we present the results in a chronological order.
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Affiliation(s)
- José L. Mascareñas
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS) and Departamento de Química
Orgánica, Universidad de Santiago
de Compostela, 15782 Santiago de Compostela, Spain
| | - Iván Varela
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS) and Departamento de Química
Orgánica, Universidad de Santiago
de Compostela, 15782 Santiago de Compostela, Spain
| | - Fernando López
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS) and Departamento de Química
Orgánica, Universidad de Santiago
de Compostela, 15782 Santiago de Compostela, Spain
- Instituto
de Química Orgánica General, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
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20
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Liu G, Yu S, Hu W, Qiu H. A gold(i)-catalysed three-component reaction via trapping oxonium ylides with allenamides. Chem Commun (Camb) 2019; 55:12675-12678. [DOI: 10.1039/c9cc06599g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A gold(i)-catalysed three-component reaction between alcohols (and water), α-aryl-α-diazoesters and allenamides is reported, affording tert-allylic ethers (and alcohols), in moderate to excellent yields with excellent geometric selectivity.
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Affiliation(s)
- Gengxin Liu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Sifan Yu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Huang Qiu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
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21
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Alyabyev SB, Beletskaya IP. Gold as a catalyst. Part II. Alkynes in the reactions of carbon–carbon bond formation. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4815] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Kim H, Choi SY, Shin S. Asymmetric Synthesis of Dihydropyranones via Gold(I)‐Catalyzed Intermolecular [4+2] Annulation of Propiolates and Alkenes. Angew Chem Int Ed Engl 2018; 57:13130-13134. [PMID: 30129705 DOI: 10.1002/anie.201807514] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 08/06/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Hanbyul Kim
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS)Hanyang University 222 Wangsimni-ro, Seongdong-gu Seoul 04763 Korea
| | - Su Yeon Choi
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS)Hanyang University 222 Wangsimni-ro, Seongdong-gu Seoul 04763 Korea
| | - Seunghoon Shin
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS)Hanyang University 222 Wangsimni-ro, Seongdong-gu Seoul 04763 Korea
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23
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Zhong X, Tang Q, Zhou P, Zhong Z, Dong S, Liu X, Feng X. Asymmetric synthesis of polysubstituted methylenecyclobutanes via catalytic [2+2] cycloaddition reactions of N-allenamides. Chem Commun (Camb) 2018; 54:10511-10514. [PMID: 30167604 DOI: 10.1039/c8cc06416d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A highly enantioselective [2+2] cycloaddition reaction of alkylidene malonates with the internal C[double bond, length as m-dash]C bond of N-allenamides was developed with a MgII/N,N'-dioxide complex as a catalyst. Various polysubstituted methylenecyclobutanes were afforded in good yields (up to 99%) and excellent enantioselectivities (up to 96% ee) under mild conditions. The utility of the donor-acceptor cyclobutane product was demonstrated as a masked 1,4-dipole in the formal [4+2] annulation reaction with a silyl enol ether.
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Affiliation(s)
- Xia Zhong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
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24
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Kim H, Choi SY, Shin S. Asymmetric Synthesis of Dihydropyranones via Gold(I)‐Catalyzed Intermolecular [4+2] Annulation of Propiolates and Alkenes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807514] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Hanbyul Kim
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS)Hanyang University 222 Wangsimni-ro, Seongdong-gu Seoul 04763 Korea
| | - Su Yeon Choi
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS)Hanyang University 222 Wangsimni-ro, Seongdong-gu Seoul 04763 Korea
| | - Seunghoon Shin
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS)Hanyang University 222 Wangsimni-ro, Seongdong-gu Seoul 04763 Korea
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25
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Yuan X, Re He Man XJAT, Li XX, Zhao ZG. Regioselective 1,2-additions of alcohols to allenamides mediated by N-Iodosuccinimide: Synthesis of N,O-aminals. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Zhang X, Pan Y, Liang P, Pang L, Ma X, Jiao W, Shao H. Oxadiazepine Synthesis by Formal [4+3] Cycloaddition ofo-Chloromethyl Arylsulfonamides with Nitrones Promoted by NaHCO3. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800663] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Xiaoke Zhang
- Natural Products Research Centre, Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu People's Republic of China
- University of Chinese Academy of Sciences; People's Republic of China
| | - Yang Pan
- Natural Products Research Centre, Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu People's Republic of China
- University of Chinese Academy of Sciences; People's Republic of China
| | - Peng Liang
- Natural Products Research Centre, Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu People's Republic of China
- University of Chinese Academy of Sciences; People's Republic of China
| | - Lu Pang
- Natural Products Research Centre, Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu People's Republic of China
| | - Xiaofeng Ma
- Natural Products Research Centre, Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu People's Republic of China
- University of Chinese Academy of Sciences; People's Republic of China
| | - Wei Jiao
- Natural Products Research Centre, Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu People's Republic of China
| | - Huawu Shao
- Natural Products Research Centre, Chengdu Institute of Biology; Chinese Academy of Sciences; Chengdu People's Republic of China
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27
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Gong J, Wan Q, Kang Q. Asymmetric [3 + 2] Cycloaddition Employing N,N′-Cyclic Azomethine Imines Catalyzed by Chiral-at-Metal Rhodium Complex. Org Lett 2018; 20:3354-3357. [PMID: 29763332 DOI: 10.1021/acs.orglett.8b01264] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jun Gong
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qian Wan
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, China
| | - Qiang Kang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, China
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28
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Li HH, Li XX, Zhao ZG, Yuan X, Sun CY. Regioselective 1,2-addition of allenamides with N-haloimides: synthesis of 2-halo allylic aminal derivatives. Org Biomol Chem 2018; 15:4005-4013. [PMID: 28443882 DOI: 10.1039/c7ob00882a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A strategy for the synthesis of 2-halo allylic aminal derivatives through regioselective 1,2-addition of allenamides with N-haloimides is presented. This reaction was conducted under very mild conditions and gave up to 99% yield. Moreover, the obtained halides allow functional group diversification by palladium-catalyzed coupling reactions, which could act as potential intermediates for the synthesis of valuable compounds.
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Affiliation(s)
- Hong-He Li
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, People's Republic of China.
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29
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Kong Y, Liu Y, Wang B, Li S, Liu L, Chang W, Li J. The Catalyst-Controlled Divergent Cascade Reactions of Homo-Propargylic Amines and Nitrones: Synthesis of Pyrrolo-Isoxazolidines and γ-Lactams. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701476] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yuanfang Kong
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Yingze Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Boyi Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Shengli Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Lingyan Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Weixing Chang
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China
| | - Jing Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Weijin Road 94#, Nankai District Tianjin 300071 People's Republic of China
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30
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Li H, Li X, Zhao Z, Ma T, Sun C, Yang B. Intermolecular iodofunctionalization of allenamides with indoles, pyrroles, and furans: synthesis of iodine-substituted Z-enamides. Chem Commun (Camb) 2018; 52:10167-70. [PMID: 27461389 DOI: 10.1039/c6cc05046h] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new method was developed to synthesize iodine-substituted Z-enamides through N-iodosuccinimide-mediated intermolecular iodofunctionalization of allenamides with indoles, pyrroles, and furans. These reactions proceed rapidly and tolerate a broad scope of substrates. The conjugated sulfimide ion species probably acts as the key intermediate.
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Affiliation(s)
- Honghe Li
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China.
| | - Xiaoxiao Li
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China.
| | - Zhigang Zhao
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China.
| | - Ting Ma
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China.
| | - Chenyang Sun
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China.
| | - Bowen Yang
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China.
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31
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Abstract
Interest in homogeneous gold catalysis has undergone a marked increase. As strong yet air- and moisture-tolerant π-acids, cationic gold(i) complexes have been shown to catalyze diverse transformations of alkenes, alkynes and allenes, opening new opportunities for chemical synthesis. The development of efficient asymmetric variants is required in order to take full advantage of the preparative potential of these transformations. During the last few years, the chemical community has achieved tremendous success in the area. This review highlights the updated progress (2011-2015) in enantioselective gold catalysis. The discussion is classified according to the π-bonds activated by gold(i), in an order of alkynes, allenes and alkenes. Other gold activation modes, such as σ-Lewis acid catalyzed reactions and transformations of diazo compounds are also discussed.
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Affiliation(s)
- Weiwei Zi
- Department of Chemistry, University of California, Berkeley, CA 94720, USA.
| | - F Dean Toste
- Department of Chemistry, University of California, Berkeley, CA 94720, USA.
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32
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Li Y, Luo GL, Li XX, Zhao ZG. NIS-Mediated intermolecular hydroamination of allenamides with imidazole heterocycles: a facile protocol for the synthesis of allylic N,N-acetals. NEW J CHEM 2018. [DOI: 10.1039/c8nj03641a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report a new protocol to synthesize allylic N,N-acetal derivatives through NIS-mediated hydroamination of allenamides with imidazole heterocycles.
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Affiliation(s)
- Yan Li
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- P. R. China
| | - Guo Li Luo
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- P. R. China
| | - Xiao Xiao Li
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- P. R. China
| | - Zhi Gang Zhao
- College of Chemistry and Environmental Protection Engineering
- Southwest Minzu University
- Chengdu 610041
- P. R. China
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33
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Wang Y, Zhang P, Di X, Dai Q, Zhang ZM, Zhang J. Gold-Catalyzed Asymmetric Intramolecular Cyclization of N-Allenamides for the Synthesis of Chiral Tetrahydrocarbolines. Angew Chem Int Ed Engl 2017; 56:15905-15909. [DOI: 10.1002/anie.201709595] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 10/23/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Yidong Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 China
| | - Peichao Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 China
| | - Xiaoyu Di
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 China
| | - Qiang Dai
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 China
| | - Zhan-Ming Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry, CAS; 345 Lingling Road Shanghai 200032 China
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34
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Wang Y, Zhang P, Di X, Dai Q, Zhang ZM, Zhang J. Gold-Catalyzed Asymmetric Intramolecular Cyclization of N-Allenamides for the Synthesis of Chiral Tetrahydrocarbolines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709595] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yidong Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 China
| | - Peichao Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 China
| | - Xiaoyu Di
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 China
| | - Qiang Dai
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 China
| | - Zhan-Ming Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical, Processes; School of Chemistry and Molecular Engineering; East China Normal University; 3663 N. Zhongshan Road Shanghai 200062 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry, CAS; 345 Lingling Road Shanghai 200032 China
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35
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García-Morales C, Ranieri B, Escofet I, López-Suarez L, Obradors C, Konovalov AI, Echavarren AM. Enantioselective Synthesis of Cyclobutenes by Intermolecular [2+2] Cycloaddition with Non-C 2 Symmetric Digold Catalysts. J Am Chem Soc 2017; 139:13628-13631. [PMID: 28922911 PMCID: PMC5679663 DOI: 10.1021/jacs.7b07651] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Indexed: 01/12/2023]
Abstract
The enantioselective intermolecular gold(I)-catalyzed [2+2] cycloaddition of terminal alkynes and alkenes has been achieved using non-C2-chiral Josiphos digold(I) complexes as catalysts, by the formation of the monocationic complex. This new approach has been applied to the enantioselective total synthesis of rumphellaone A.
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Affiliation(s)
- Cristina García-Morales
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Beatrice Ranieri
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Imma Escofet
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Laura López-Suarez
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Carla Obradors
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Andrey I. Konovalov
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Antonio M. Echavarren
- Institute of Chemical
Research of Catalonia (ICIQ), Barcelona Institute of
Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament
de Química Orgànica i Analítica, Universitat Rovira i Virgili, C/Marcel·lí Domingo s/n, 43007 Tarragona, Spain
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36
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Chakrabarty I, Inamdar SM, Akram MO, Gade AB, Banerjee S, Bera S, Patil NT. [3+2]-Annulation of platinum-bound azomethine ylides with distal C[double bond, length as m-dash]C bonds of N-allenamides. Chem Commun (Camb) 2017; 53:196-199. [PMID: 27917422 DOI: 10.1039/c6cc07874e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A Pt-catalyzed, highly regioselective reaction between N-allenamides and imino-alkynes leading to pyrrolo[1,2-a]indoles is described. This represents the first example of [3+2]-annulation of Pt-bound azomethine ylides with the distal C[double bond, length as m-dash]C bond of N-allenamides. The mechanism of the reaction was established by computational studies.
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Affiliation(s)
- Indradweep Chakrabarty
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi - 110025, India
| | - Suleman M Inamdar
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India.
| | - Manjur O Akram
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi - 110025, India
| | - Amol B Gade
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi - 110025, India
| | - Subhrashis Banerjee
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India
| | - Saibal Bera
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India
| | - Nitin T Patil
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi - 110025, India
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37
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Azizpoor Fard M, Behnia A, Puddephatt RJ. Coordination chemistry of mercury(ii) with 2-pyridylnitrones: monomers to polymers. Dalton Trans 2017; 46:3579-3587. [PMID: 28240754 DOI: 10.1039/c7dt00050b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The coordination chemistry of mercury(ii) halides, HgX2, X = Cl, Br, I, with N-methyl-α-(2-pyridyl)nitrone, L1, and N-t-butyl-α-(2-pyridyl)nitrone, L2, is reported. The structures of 1 : 1 complexes [HgX2L], X = Cl, L = L1; X = Br, L = L2, 2 : 1 complexes [(HgX2)2L], X = Br or I, L = L1; X = Cl or I, L = L2, and a unique compound [(HgBr2)5(L2)3] have been determined. In the 1 : 1 and 1 : 2 complexes, the ligand L1 adopts the anti conformation, and is either monodentate or bridging, while the ligand L2 adopts the syn conformation and acts as a chelate ligand. In the compound [(HgBr2)5(L2)3] the ligand L2 is present in both syn-chelate and anti-bridging bonding modes. Secondary intermolecular bonding, involving OHg or XHg interactions, can lead to association of the molecular compounds to form polymers of several kinds. In solution, the complexes are labile and the crystalline products do not necessarily reflect the reaction stoichiometry.
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Affiliation(s)
| | - Ava Behnia
- Department of Chemistry, The University of Western Ontario, London, Canada N6A 5B7.
| | - Richard J Puddephatt
- Department of Chemistry, The University of Western Ontario, London, Canada N6A 5B7.
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38
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Wang X, Yang P, Zhang Y, Tang CZ, Tian F, Peng L, Wang LX. Isatin N,N′-Cyclic Azomethine Imine 1,3-Dipole and Abnormal [3 + 2]-Cycloaddition with Maleimide in the Presence of 1,4-Diazabicyclo[2.2.2]octane. Org Lett 2017; 19:646-649. [DOI: 10.1021/acs.orglett.6b03815] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Xiao Wang
- Key
Laboratory of Asymmetric Synthesis and Chirotechnology of Sichuan
Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peng Yang
- Key
Laboratory of Asymmetric Synthesis and Chirotechnology of Sichuan
Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong Zhang
- Key
Laboratory of Asymmetric Synthesis and Chirotechnology of Sichuan
Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao-Zhe Tang
- Key
Laboratory of Asymmetric Synthesis and Chirotechnology of Sichuan
Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang Tian
- Key
Laboratory of Asymmetric Synthesis and Chirotechnology of Sichuan
Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Lin Peng
- Key
Laboratory of Asymmetric Synthesis and Chirotechnology of Sichuan
Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Li-Xin Wang
- Key
Laboratory of Asymmetric Synthesis and Chirotechnology of Sichuan
Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
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39
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Peng S, Cao S, Sun J. Gold-Catalyzed Regiodivergent [2 + 2 + 2]-Cycloadditions of Allenes with Triazines. Org Lett 2017; 19:524-527. [PMID: 28079381 DOI: 10.1021/acs.orglett.6b03691] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Gold-catalyzed regiodivergent cycloadditions of functionalized allenes with 1,3,5-triazines, providing diverse N-heterocycles in moderate to excellent yields under mild reaction conditions, are reported. Importantly, different types of allenes exhibit distinct selectivity and reactivity for the reactions. Mechanistic investigations reveal that all of the cycloadditions proceed through a stepwise [2 + 2 + 2]-cycloaddition process.
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Affiliation(s)
- Shiyong Peng
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology and School of Pharmaceutical Engineering & Life Science, Changzhou University , Changzhou 213164, P. R. China
| | - Shengyu Cao
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology and School of Pharmaceutical Engineering & Life Science, Changzhou University , Changzhou 213164, P. R. China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology and School of Pharmaceutical Engineering & Life Science, Changzhou University , Changzhou 213164, P. R. China
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40
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Yan F, Liang H, Song J, Cui J, Liu Q, Liu S, Wang P, Dong Y, Liu H. Palladium-Catalyzed Cyclization-Heck Reaction of Allenamides: An Approach to 3-Methylene-5-phenyl-1,2,3,4-tetrahydropyridine Derivatives. Org Lett 2016; 19:86-89. [PMID: 27966983 DOI: 10.1021/acs.orglett.6b03364] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fachao Yan
- School
of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Hanbing Liang
- School
of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Jian Song
- School
of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Jie Cui
- School
of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Qing Liu
- School
of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Sheng Liu
- College
of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Ping Wang
- School
of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Yunhui Dong
- School
of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
| | - Hui Liu
- School
of Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China
- The Technical Center of Zibo Entry and Exit Inspection and Quarantine Bureau, Zibo 255031, P. R. China
- College
of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
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41
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42
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Li HH, Li XX, Zhao ZG, Lin CB, Ma T, Sun CY, Yang BW, Fu XL. An intermolecular iodoamination of allenamides with sulfonamides mediated by N -iodosuccinimide. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.09.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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43
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Zheng WF, Bora PP, Sun GJ, Kang Q. Rhodium-Catalyzed Regio- and Stereoselective [2 + 2] Cycloaddition of Allenamides. Org Lett 2016; 18:3694-7. [PMID: 27403894 DOI: 10.1021/acs.orglett.6b01731] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A highly regio- and stereoselective Rh-catalyzed intermolecular head-to-head [2 + 2] cycloaddition of allenamides was developed. The intermolecular cycloadducts, trans-dimethylenecyclobutane-1,2-diamine derivatives, were achieved in good yields with high regioselectivity and stereoselectivity.
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Affiliation(s)
- Wei-Feng Zheng
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou 350002, China.,College of Materials Science and Engineering, Fujian Normal University , Fuzhou 350007, China
| | - Pranjal Protim Bora
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou 350002, China
| | - Gui-Jun Sun
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou 350002, China
| | - Qiang Kang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , 155 Yangqiao Road West, Fuzhou 350002, China
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44
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Manoni E, Bandini M. N-Allenyl Amides and O-Allenyl Ethers in Enantioselective Catalysis. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600304] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Elisabetta Manoni
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum - University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Marco Bandini
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum - University of Bologna; Via Selmi 2 40126 Bologna Italy
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45
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Unusual Regioselectivity in the Gold(I)-Catalyzed [3+2] Carbocycloaddition Reaction of Vinyldiazo Compounds and N-Allenamides. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201501039] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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46
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Ballesteros A, Morán-Poladura P, González JM. Gold(i) operational in synergistic catalysis for the intermolecular α-addition reaction of aldehydes across allenamides. Chem Commun (Camb) 2016; 52:2905-8. [DOI: 10.1039/c5cc09529h] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A synergistic approach to the catalytic intermolecular α-addition of aldehydes across allenamides using gold(i) and proline derivatives.
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Affiliation(s)
- Alberto Ballesteros
- Departamento de Química Orgánica e Inorgánica
- Instituto Universitario de Química Organometálica “Enrique Moles”
- 33006 Oviedo
- Spain
| | - Pablo Morán-Poladura
- Departamento de Química Orgánica e Inorgánica
- Instituto Universitario de Química Organometálica “Enrique Moles”
- 33006 Oviedo
- Spain
| | - Jose M. González
- Departamento de Química Orgánica e Inorgánica
- Instituto Universitario de Química Organometálica “Enrique Moles”
- 33006 Oviedo
- Spain
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47
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Fernández-Casado J, Nelson R, Mascareñas JL, López F. Synergistic gold and enamine catalysis: intermolecular α-alkylation of aldehydes with allenamides. Chem Commun (Camb) 2016; 52:2909-12. [DOI: 10.1039/c5cc09533f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Aldehydes can be α-alkylated with allenamides by the combined action of an organocatalyst and a gold complex.
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Affiliation(s)
- Jaime Fernández-Casado
- Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS) and Departamento de Química Orgánica
- Universidad de Santiago de Compostela
- C/Jenaro de la Fuente
- Santiago de Compostela
- Spain
| | - Ronald Nelson
- Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS) and Departamento de Química Orgánica
- Universidad de Santiago de Compostela
- C/Jenaro de la Fuente
- Santiago de Compostela
- Spain
| | - José L. Mascareñas
- Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS) and Departamento de Química Orgánica
- Universidad de Santiago de Compostela
- C/Jenaro de la Fuente
- Santiago de Compostela
- Spain
| | - Fernando López
- Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CIQUS) and Departamento de Química Orgánica
- Universidad de Santiago de Compostela
- C/Jenaro de la Fuente
- Santiago de Compostela
- Spain
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48
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Abstract
Various vinyl ketonitrones are prepared using new strategies and were applied to synthesize heterocycles in organic synthesis.
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Affiliation(s)
- Wei-Min Shi
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Education of China and School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- China
| | - Xiao-Pan Ma
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Education of China and School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- China
| | - Gui-Fa Su
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Education of China and School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- China
| | - Dong-Liang Mo
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Education of China and School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- China
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49
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López E, Lonzi G, González J, López LA. Gold-catalyzed intermolecular formal (3+2) cycloaddition of stabilized vinyldiazo derivatives and electronically unbiased allenes. Chem Commun (Camb) 2016; 52:9398-401. [DOI: 10.1039/c6cc04106j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The gold-catalyzed reaction of electronically unbiased allenes with alkenyldiazo compounds provided alkylidenecyclopentene derivatives resulting from a formal intermolecular (3+2) carbocyclization.
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Affiliation(s)
- Enol López
- Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- 33006-Oviedo
- Spain
- Instituto Universitario de Química Organometálica “Enrique Moles”
| | - Giacomo Lonzi
- Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- 33006-Oviedo
- Spain
- Instituto Universitario de Química Organometálica “Enrique Moles”
| | - Javier González
- Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- 33006-Oviedo
- Spain
| | - Luis A. López
- Departamento de Química Orgánica e Inorgánica
- Universidad de Oviedo
- 33006-Oviedo
- Spain
- Instituto Universitario de Química Organometálica “Enrique Moles”
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50
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Hernández-Díaz C, Rubio E, González JM. Gold-Catalyzed Allenamide [2+2+2]-Cyclotrimerization. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501364] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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