1
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Hsu CK, Liu YH, Liu ST. Preparation of Benzo[ a]fluorenes via Pd-Catalyzed Annulation of 5-(2-Bromophenyl)pent-3-en-1-ynes. J Org Chem 2024; 89:12341-12348. [PMID: 39121450 PMCID: PMC11382150 DOI: 10.1021/acs.joc.4c01286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2024]
Abstract
A palladium-promoted cascade cyclization of 5-(2-bromophenyl)pent-3-en-1-ynes is developed for the synthesis of benzo[a]fluorene derivatives. The reaction proceeds with oxidative addition of C-Br, insertion, C-H activation, and reductive elimination in sequential steps.
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Affiliation(s)
- Cheng-Kai Hsu
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Yi-Hung Liu
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Shiuh-Tzung Liu
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
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2
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Application of Olefin Metathesis in the Synthesis of Carbo- and Heteroaromatic Compounds-Recent Advances. Molecules 2023; 28:molecules28041680. [PMID: 36838666 PMCID: PMC9967038 DOI: 10.3390/molecules28041680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/04/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
The olefin metathesis reaction has found numerous applications in organic synthesis. This is due to a number of advantages, such as the tolerance of most functional groups and sterically demanding olefins. This article reviews recent advances in the application of the metathesis reaction, particularly the metathetic cyclization of dienes and enynes, in synthesis protocols leading to (hetero)aromatic compounds.
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3
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Galathri EM, Di Terlizzi L, Fagnoni M, Protti S, Kokotos CG. Friedel-Crafts arylation of aldehydes with indoles utilizing arylazo sulfones as the photoacid generator. Org Biomol Chem 2023; 21:365-369. [PMID: 36512428 DOI: 10.1039/d2ob02214a] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A versatile, inexpensive and sustainable protocol for the preparation of valuable bis-indolyl methanes via visible light-mediated, metal-free Friedel-Crafts arylation has been developed. The procedure, that exploits the peculiar behavior of arylazo sulfones as non-ionic photoacid generators (PAGs), was applied to the conversion of a variety of aliphatic and aromatic aldehydes into diarylmethanes in good to highly satisfactory yields, employing a low-catalyst loading (0.5 mol%) and irradiation at 456 nm.
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Affiliation(s)
- Eirini M Galathri
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
| | - Lorenzo Di Terlizzi
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, Pavia 27100, Italy
| | - Maurizio Fagnoni
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, Pavia 27100, Italy
| | - Stefano Protti
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, Pavia 27100, Italy
| | - Christoforos G Kokotos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Athens 15771, Greece.
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4
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Palladium-catalysed construction of butafulvenes. Nat Chem 2022; 14:1185-1192. [PMID: 35982234 DOI: 10.1038/s41557-022-01017-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 07/01/2022] [Indexed: 11/08/2022]
Abstract
Butafulvene is a constitutional isomer of benzene, comprising a cyclobutene skeleton bearing two exocyclic conjugated methylene units. As a result of the intrinsic high strain energy and anti-aromaticity, the preparation of butafulvene compounds has been a fundamental issue for the development of butafulvene chemistry. Here an efficient palladium-catalysed coupling protocol involving propargylic compounds has been developed, providing a solid and versatile strategy for the rapid assembly of symmetric butafulvene derivatives. Based on mechanistic studies, two complementary mechanisms, both involving palladium catalysis, have been confirmed. With the mechanism unveiled, the synthesis of non-symmetric butafulvenes has also been achieved. Advantages of this strategy include tolerance to a wide range of propargylic molecules, mild reaction conditions, simple catalytic systems and easy scalability. The synthetic potential of the products as platform molecules for cyclobutene derivatives has also been demonstrated.
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5
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Hu SJ, Jiang LL, Qiu H, Luo CM, Guan YT, Li L, Dong Y, Lei KW, Wei WT. Cyclization/hydrolysis of 1,5-enenitriles initiated by sulfonyl radicals in the aqueous phase in the presence of the I 2/TBHP system. Org Biomol Chem 2022; 20:6418-6422. [PMID: 35876742 DOI: 10.1039/d2ob01124g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel cyclization/hydrolysis of 1,5-enenitriles for the synthesis of valuable pyrrolidine-2,4-diones in the aqueous phase using I2 as the catalyst and tert-butyl hydroperoxide (TBHP) as the oxidant is reported. In the presence of the I2/TBHP system, sulfonyl hydrazides produce sulfonyl radicals, which undergo radical addition, intramolecular cyclization, hydrogen abstraction, and hydrolysis to give the final products. The use of the inexpensive and environmentally friendly I2/TBHP catalytic oxidation system in the aqueous phase makes it a benign and sustainable strategy.
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Affiliation(s)
- Sen-Jie Hu
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Li-Lin Jiang
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Hui Qiu
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Chun-Mei Luo
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Yu-Tao Guan
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Long Li
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Youren Dong
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Ke-Wei Lei
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Wen-Ting Wei
- Institute of Drug Discovery Technology, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
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6
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Kong W, Liu Y, Huang C, Zhou L, Gao J, Turner NJ, Jiang Y. Direct Asymmetric Reductive Amination of Alkyl (Hetero)Aryl Ketones by an Engineered Amine Dehydrogenase. Angew Chem Int Ed Engl 2022; 61:e202202264. [DOI: 10.1002/anie.202202264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Indexed: 02/03/2023]
Affiliation(s)
- Weixi Kong
- School of Chemical Engineering and Technology Hebei University of Technology No. 8 Guangrong Road, Hongqiao District Tianjin 300130 China
| | - Yunting Liu
- School of Chemical Engineering and Technology Hebei University of Technology No. 8 Guangrong Road, Hongqiao District Tianjin 300130 China
| | - Chen Huang
- School of Chemical Engineering and Technology Hebei University of Technology No. 8 Guangrong Road, Hongqiao District Tianjin 300130 China
| | - Liya Zhou
- School of Chemical Engineering and Technology Hebei University of Technology No. 8 Guangrong Road, Hongqiao District Tianjin 300130 China
| | - Jing Gao
- School of Chemical Engineering and Technology Hebei University of Technology No. 8 Guangrong Road, Hongqiao District Tianjin 300130 China
| | - Nicholas J. Turner
- Department of Chemistry University of Manchester Manchester Institute of Biotechnology 131 Princess Street Manchester M1 7DN UK
| | - Yanjun Jiang
- School of Chemical Engineering and Technology Hebei University of Technology No. 8 Guangrong Road, Hongqiao District Tianjin 300130 China
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7
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Di Terlizzi L, Protti S, Ravelli D, Fagnoni M. Diradicals Photogeneration from Chloroaryl‐Substituted Carboxylic Acids. Chemistry 2022; 28:e202200313. [PMID: 35226781 PMCID: PMC9313617 DOI: 10.1002/chem.202200313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Indexed: 11/25/2022]
Abstract
With the aim of generating new, thermally inaccessible diradicals, potentially able to induce a double‐strand DNA cleavage, the photochemistry of a set of chloroaryl‐substituted carboxylic acids in polar media was investigated. The photoheterolytic cleavage of the Ar−Cl bond occurred in each case to form the corresponding triplet phenyl cations. Under basic conditions, the photorelease of the chloride anion was accompanied by an intramolecular electron‐transfer from the carboxylate group to the aromatic radical cationic site to give a diradical species. This latter intermediate could then undergo CO2 loss in a structure‐dependent fashion, according to the stability of the resulting diradical, or abstract a hydrogen atom from the medium. In aqueous environment at physiological pH (pH=7.3), both a phenyl cation and a diradical chemistry was observed. The mechanistic scenario and the role of the various intermediates (aryl cations and diradicals) involved in the process was supported by computational analysis.
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Affiliation(s)
| | - Stefano Protti
- PhotoGreen LabDepartment of ChemistryV. Le Taramelli 1027100PaviaItaly
| | - Davide Ravelli
- PhotoGreen LabDepartment of ChemistryV. Le Taramelli 1027100PaviaItaly
| | - Maurizio Fagnoni
- PhotoGreen LabDepartment of ChemistryV. Le Taramelli 1027100PaviaItaly
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8
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Patel RI, Singh J, Sharma A. Visible Light‐Mediated Manipulation of 1,n‐Enynes in Organic Synthesis. ChemCatChem 2022. [DOI: 10.1002/cctc.202200260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Roshan I. Patel
- IIT Roorkee: Indian Institute of Technology Roorkee CHEMISTRY INDIA
| | - Jitender Singh
- IIT Roorkee: Indian Institute of Technology Roorkee CHEMISTRY INDIA
| | - Anuj Sharma
- Indian Institute of Technoology Roorkee Deptartment of Chemistry Room 303DDepartment of Chemistry, IIT Roorkee 247667 Roorkee INDIA
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9
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Kong W, Liu Y, Huang C, Zhou L, Gao J, Turner NJ, Jiang Y. Direct Asymmetric Reductive Amination of Alkyl (Hetero)Aryl Ketones by an Engineered Amine Dehydrogenase. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Weixi Kong
- School of Chemical Engineering and Technology Hebei University of Technology No. 8 Guangrong Road, Hongqiao District Tianjin 300130 China
| | - Yunting Liu
- School of Chemical Engineering and Technology Hebei University of Technology No. 8 Guangrong Road, Hongqiao District Tianjin 300130 China
| | - Chen Huang
- School of Chemical Engineering and Technology Hebei University of Technology No. 8 Guangrong Road, Hongqiao District Tianjin 300130 China
| | - Liya Zhou
- School of Chemical Engineering and Technology Hebei University of Technology No. 8 Guangrong Road, Hongqiao District Tianjin 300130 China
| | - Jing Gao
- School of Chemical Engineering and Technology Hebei University of Technology No. 8 Guangrong Road, Hongqiao District Tianjin 300130 China
| | - Nicholas J. Turner
- Department of Chemistry University of Manchester Manchester Institute of Biotechnology 131 Princess Street Manchester M1 7DN UK
| | - Yanjun Jiang
- School of Chemical Engineering and Technology Hebei University of Technology No. 8 Guangrong Road, Hongqiao District Tianjin 300130 China
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10
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Chan P, Baratay C, Li W, Mathiew M, Yu L, Kyne S, Rao W. Gold‐ and Brønsted Acid‐Catalysed Deacyloxylative Cycloaromatisation of 1,6‐Diyne Esters to 11H‐Benzo[a]fluorenes and 13H‐Indeno[1,2‐l]phenanthrenes. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Wenhai Li
- China Pharmaceutical University CHINA
| | | | - Lei Yu
- Monash University AUSTRALIA
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11
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Abstract
This review highlights the hydroelementation reactions of conjugated and separated diynes, which depending on the process conditions, catalytic system, as well as the type of reagents, leads to the formation of various products: enynes, dienes, allenes, polymers, or cyclic compounds. The presence of two triple bonds in the diyne structure makes these compounds important reagents but selective product formation is often difficult owing to problems associated with maintaining appropriate reaction regio- and stereoselectivity. Herein we review this topic to gain knowledge on the reactivity of diynes and to systematise the range of information relating to their use in hydroelementation reactions. The review is divided according to the addition of the E-H (E = Mg, B, Al, Si, Ge, Sn, N, P, O, S, Se, Te) bond to the triple bond(s) in the diyne, as well as to the type of the reagent used, and the product formed. Not only are the hydroelementation reactions comprehensively discussed, but the synthetic potential of the obtained products is also presented. The majority of published research is included within this review, illustrating the potential as well as limitations of these processes, with the intent to showcase the power of these transformations and the obtained products in synthesis and materials chemistry.
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Affiliation(s)
- Jędrzej Walkowiak
- Adam Mickiewicz University in Poznan, Center for Advanced Technology, Uniwersytetu Poznanskiego 10, 61-614, Poznan.
| | - Jakub Szyling
- Adam Mickiewicz University in Poznan, Center for Advanced Technology, Uniwersytetu Poznanskiego 10, 61-614, Poznan. .,Adam Mickiewicz University in Poznan, Faculty of Chemistry, Uniwersytetu Poznanskiego 8, 61-614, Poznan, Poland
| | - Adrian Franczyk
- Adam Mickiewicz University in Poznan, Center for Advanced Technology, Uniwersytetu Poznanskiego 10, 61-614, Poznan.
| | - Rebecca L Melen
- Cardiff Catalysis Institute, Cardiff University, School of Chemistry, Park Place, Main Building, Cardiff CF10 3AT, Cymru/Wales, UK.
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12
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Di Terlizzi L, Roncari F, Crespi S, Protti S, Fagnoni M. Aryl-Cl vs heteroatom-Si bond cleavage on the route to the photochemical generation of σ,π-heterodiradicals. Photochem Photobiol Sci 2021; 21:667-685. [PMID: 34775550 DOI: 10.1007/s43630-021-00119-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/16/2021] [Indexed: 11/30/2022]
Abstract
The photochemistry of aryl chlorides having a X-SiMe3 group (X = O, NR, S, SiMe2) tethered to the aromatic ring has been investigated in detail, with the aim to generate valuable ϭ,π-heterodiradicals. Two competitive pathways arising from the excited triplet state of the aromatics have been observed, namely heterolysis of the aryl-chlorine bond and homolysis of the X-silicon bond. The former path is found in chlorinated phenols and anilines, whereas the latter is exclusive in the case of silylated thiophenols and aryl silanes. A combined experimental/computational approach was pursued to explain such a photochemical behavior.Graphical abstract.
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Affiliation(s)
- Lorenzo Di Terlizzi
- Department of Chemistry, PhotoGreen Lab, Viale Taramelli 12, 27100, Pavia, Italy
| | - Francesca Roncari
- Department of Chemistry, PhotoGreen Lab, Viale Taramelli 12, 27100, Pavia, Italy
| | - Stefano Crespi
- Stratingh Institute for Chemistry, Center for Systems Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Stefano Protti
- Department of Chemistry, PhotoGreen Lab, Viale Taramelli 12, 27100, Pavia, Italy
| | - Maurizio Fagnoni
- Department of Chemistry, PhotoGreen Lab, Viale Taramelli 12, 27100, Pavia, Italy.
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13
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Nie W, Shen S, Ma C. Rhodium-Catalyzed Dehydrogenative Cycloisomerization of Dienylcyclopropane to Highly Substituted Toluene. Org Lett 2021; 23:4337-4341. [PMID: 34029111 DOI: 10.1021/acs.orglett.1c01265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A rhodium-catalyzed dehydrogenative cycloisomerization of dienylcyclopropane compounds is reported, which provides a straightforward approach to a variety of highly substituted toluene derivatives in 67-85% yields. The dienylcyclopropane-imides are produced by a single-step formal three-component olefination procedure. Preliminary mechanistic studies indicated that an electron-withdrawing group as R plays a critical role in completing this transformation.
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Affiliation(s)
- Wo Nie
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Shichao Shen
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Cheng Ma
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
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14
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Zhang M, Ma H, Li B, Sun K, Lu H, Wang W, Cheng X, Li X, Ding Y, Hu A. Nucleophilic Addition to Diradicals Derived From Cycloaromatization of Maleimide‐Based Enediynes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mengsi Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Hailong Ma
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Baojun Li
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Ke Sun
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Wenbo Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Xiaoyu Cheng
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Xiaoxuan Li
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
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15
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Zhang M, Lu H, Li B, Ma H, Wang W, Cheng X, Ding Y, Hu A. Experimental and Computational Study on the Intramolecular Hydrogen Atom Transfer Reactions of Maleimide-Based Enediynes After Cycloaromatization. J Org Chem 2020; 86:1549-1559. [DOI: 10.1021/acs.joc.0c02401] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Mengsi Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Baojun Li
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hailong Ma
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wenbo Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaoyu Cheng
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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16
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Lu H, Zhang M, Li B, Ma H, Wang W, Ding Y, Li X, Hu A. Experimental and Computational Study on the Reaction Pathways of Diradical Intermediates Formed from Myers‐Saito Cyclization of Maleimide‐Based Enediynes. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Mengsi Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Baojun Li
- Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Hailong Ma
- Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Wenbo Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Xinxin Li
- Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
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17
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Thadkapally S, Farshadfar K, Drew MA, Richardson C, Ariafard A, Pyne SG, Hyland CJT. Rhodium-catalysed tetradehydro-Diels-Alder reactions of enediynes via a rhodium-stabilized cyclic allene. Chem Sci 2020; 11:10945-10950. [PMID: 34094344 PMCID: PMC8162385 DOI: 10.1039/d0sc04390g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Efficient methods for the synthesis of fused-aromatic rings is a critical endeavour in the creation of new pharmaceuticals and materials. A direct method for preparing these systems is the tetradehydro-Diels-Alder reaction, however this is limited by the need for harsh reaction conditions. A potential, but underdeveloped, route to these systems is via transition metal-catalysed cycloaromatisation of ene-diynes. Herein, tethered unconjugated enediynes have been shown to undergo a facile room-temperature RhI-catalysed intramolecular tetradehydro-Diels-Alder reaction to produce highly substituted isobenzofurans, isoindolines and an indane. Furthermore, experimental and computational studies suggest a novel mechanism involving an unprecedented and complex RhI/RhIII/RhI/RhIII redox cycle involving the formation of an unusual strained 7-membered rhodacyclic allene intermediate and a RhIII-stabilized 6-membered ring allene complex.
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Affiliation(s)
- Srinivas Thadkapally
- School of Chemistry and Molecular Bioscience, University of Wollongong Wollongong NSW 2522 Australia
| | - Kaveh Farshadfar
- School of Physical Sciences, University of Tasmania Hobart TAS 7018 Australia.,Department of Chemistry, Islamic Azad University, Central Tehran Branch Poonak Tehran 1469669191 Iran
| | - Melanie A Drew
- School of Chemistry and Molecular Bioscience, University of Wollongong Wollongong NSW 2522 Australia
| | - Christopher Richardson
- School of Chemistry and Molecular Bioscience, University of Wollongong Wollongong NSW 2522 Australia
| | - Alireza Ariafard
- School of Physical Sciences, University of Tasmania Hobart TAS 7018 Australia
| | - Stephen G Pyne
- School of Chemistry and Molecular Bioscience, University of Wollongong Wollongong NSW 2522 Australia
| | - Christopher J T Hyland
- School of Chemistry and Molecular Bioscience, University of Wollongong Wollongong NSW 2522 Australia
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18
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Zeng Q, He C, Zhou S, Dong K, Qiu L, Xu X. Dirhodium(II)‐Catalyzed Cyclopropanation of Alkyne‐Containing α‐Diazoacetates for the Synthesis of Cycloalkynes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qian Zeng
- College of ChemistryChemical Engineering and Materials ScienceSoochow University Suzhou 215123 People's Republic of China
| | - Ciwang He
- College of ChemistryChemical Engineering and Materials ScienceSoochow University Suzhou 215123 People's Republic of China
| | - Su Zhou
- Guangdong Key Laboratory of Chiral Molecule and Drug DiscoverySchool of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
| | - Kuiyong Dong
- College of ChemistryChemical Engineering and Materials ScienceSoochow University Suzhou 215123 People's Republic of China
| | - Lihua Qiu
- College of ChemistryChemical Engineering and Materials ScienceSoochow University Suzhou 215123 People's Republic of China
| | - Xinfang Xu
- College of ChemistryChemical Engineering and Materials ScienceSoochow University Suzhou 215123 People's Republic of China
- Guangdong Key Laboratory of Chiral Molecule and Drug DiscoverySchool of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 People's Republic of China
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19
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Luo S, Min M, Wu Y, Jiang S, Xiao Y, Song R, Li J. Synthesis of Bulky 1,1‐Diarylalkanes by Copper‐Catalyzed 1,2‐Alkylarylation of Styrenes with
α
‐Carbonyl Alkyl Bromides and Arenes involving C−H Functionalization. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shu‐Zheng Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
| | - Man‐Yi Min
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
| | - Yan‐Chen Wu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
| | - Shuai‐Shuai Jiang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
| | - Yu‐Ting Xiao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
| | - Ren‐Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
| | - Jin‐Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong University Nanchang 330063 People's Republic of China
- State Key Laboratory of Chemo/Biosensing and ChemometricsHunan University Changsha 410082 People's Republic of China
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20
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Zhang M, Li B, Chen H, Lu H, Ma H, Cheng X, Wang W, Wang Y, Ding Y, Hu A. Triggering the Antitumor Activity of Acyclic Enediyne through Maleimide-Assisted Rearrangement and Cycloaromatization. J Org Chem 2020; 85:9808-9819. [DOI: 10.1021/acs.joc.0c01124] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mengsi Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Baojun Li
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Huimin Chen
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hailong Ma
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaoyu Cheng
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wenbo Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yue Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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21
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Zhang Y, Jin R, Kang W, Guo H. Cu(II)-Catalyzed 6π-Photocyclization of Non-6π Substrates. Org Lett 2020; 22:5502-5505. [DOI: 10.1021/acs.orglett.0c01854] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanbin Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P.R. China
| | - Ruiwen Jin
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P.R. China
| | - Wenjie Kang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P.R. China
| | - Hao Guo
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P.R. China
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22
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Danilkina NA, D'yachenko AS, Govdi AI, Khlebnikov AF, Kornyakov IV, Bräse S, Balova IA. Intramolecular Nicholas Reactions in the Synthesis of Heteroenediynes Fused to Indole, Triazole, and Isocoumarin. J Org Chem 2020; 85:9001-9014. [PMID: 32506914 DOI: 10.1021/acs.joc.0c00930] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The applicability of an intramolecular Nicholas reaction for the preparation of 10-membered O- and N-enediynes fused to indole, 1,2,3-triazole, and isocoumarin was investigated. The general approach to acyclic enediyne precursors fused to heterocycles includes inter- and intramolecular buta-1,3-diyne cyclizations with the formation of iodoethynylheterocycles, followed by Sonogashira coupling. The nature of both a heterocycle and a nucleophilic group affects the possibility of a 10-membered ring closure by the Nicholas reaction. Among oxacycles, an isocoumarin-fused enediyne was obtained. In the case of O-enediyne annulated with indole, instead of the formation of a 10-membered cycle, BF3-promoted addition of an OH-group to the proximal triple bond at the C3 position afforded dihydrofuryl-substituted indole. For 1,2,3-triazole-fused analogues, using NH-Ts as a nucleophilic functional group allowed obtaining 10-membered azaenediyne, while the substrate with a hydroxyl group gave only traces of the desired 10-membered oxacycle. An improved method for the deprotection of Co-complexes of cyclic enediynes using tetrabutylammonium fluoride in an acetone/water mixture and the investigation of the 10-membered enediynes' reactivity in the Bergman cyclization are also reported. In the solid state, all synthesized iodoethynylheterocycles were found to be involved in halogen bond (XB) formation with either O or N atoms as XB acceptors.
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Affiliation(s)
- Natalia A Danilkina
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Alexander S D'yachenko
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Anastasia I Govdi
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Alexander F Khlebnikov
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Ilya V Kornyakov
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Stefan Bräse
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.,Institute of Biological and Chemical Systems-Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Irina A Balova
- Institute of Chemistry, Saint Petersburg State University (SPbU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
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23
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Chen H, Li B, Zhang M, Lu H, Wang Y, Wang W, Ding Y, Hu A. Preparation of Maleimide‐Based Enediynes with Propargyl Ester for Efficient Tumor Cell Suppression. ChemistrySelect 2020. [DOI: 10.1002/slct.202001282] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Huimin Chen
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Baojun Li
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Mengsi Zhang
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yue Wang
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Wenbo Wang
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
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24
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Li Y, Qiu S, Fan L, Yin G. Cooperative Palladium and Copper Catalysis: One‐pot Synthesis of Diamino‐Substituted Naphthalenes from Aryl Halides, 1,4‐Bis(trimethylsilyl)butadiyne and Amines. ChemCatChem 2020. [DOI: 10.1002/cctc.201901745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yuan Li
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| | - Shaozhong Qiu
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| | - Ling Fan
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| | - Guodong Yin
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
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25
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Verma S, Kumar M, Verma AK. Aza-Henry Reaction: Synthesis of Nitronaphthylamines from 2-(Alkynyl)benzonitriles. Org Lett 2020; 22:130-134. [PMID: 31825635 DOI: 10.1021/acs.orglett.9b04045] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A transition-metal-free approach for construction of nitronaphthylamines has been developed for the first time through aza-henry, chemoselective, and regioselective annulation of 2-alkynylbenzonitriles with nitromethane. In addition, the strategy provides an elegant, operationally simple and atom-economical route for the synthesis of nitroamino substituted heterocyclic scaffolds, featuring a range of sensitive functional groups. The reaction could also devise acetonitrile and acetophenone as nucleophile. The protocol has been successfully implemented for late-stage modification of bioactive molecules.
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Affiliation(s)
- Shalini Verma
- Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Manoj Kumar
- Department of Chemistry , University of Delhi , Delhi 110007 , India
| | - Akhilesh K Verma
- Department of Chemistry , University of Delhi , Delhi 110007 , India
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26
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Lu H, Ma H, Li B, Zhang M, Chen H, Wang Y, Li X, Ding Y, Hu A. Facilitating Myers–Saito cyclization through acid-triggered tautomerization for the development of maleimide-based antitumor agents. J Mater Chem B 2020; 8:1971-1979. [DOI: 10.1039/c9tb02589h] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Enyne-allene compounds undergo Myers–Saito cyclization at physiological temperature to generate diradical intermediates that are capable of inducing DNA damage and cell death.
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Affiliation(s)
- Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Hailong Ma
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Baojun Li
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Mengsi Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Huimin Chen
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yue Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xinxin Li
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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27
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Wu S, Peng L, Zhou P, Zeng Z. The crystal structure of 1,2-bis((4-methoxyphenyl)ethynyl)benzene, C 24H 18O 2. Z KRIST-NEW CRYST ST 2019. [DOI: 10.1515/ncrs-2019-0593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Abstract
C24H18O2, orthorhombic, Ccc2 (no. 37), a = 9.7401(14) Å, b = 34.509(5) Å, c = 21.970(3) Å, V = 7384.7(19) Å3, Z = 16, R
gt(F) = 0.0738, wR
ref(F
2) = 0.1559, T = 298(2) K.
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Affiliation(s)
- Shuai Wu
- School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology , Xianning, 437100 , China
- College of Chemistry and Environmental Engineering, Wuhan Institute of Technology , Wuhan, Hubei 430025 , China
| | - Ling Peng
- College of Chemistry and Environmental Engineering, Wuhan Institute of Technology , Wuhan, Hubei 430025 , China
| | - Pan Zhou
- School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology , Xianning, Hubei 437100 , China
| | - Zhigang Zeng
- School of Nuclear Technology and Chemistry and Biology, Hubei University of Science and Technology , Xianning, 437100 , China
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28
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Yu JX, Teng F, Xiang JN, Deng W, Li JH. One-Carbon Incorporation Using Cyclobutanone Oxime Ester Enabled [2 + 2 + 1] Carboannulation of 1,7-Enynes by C–C/N–O Bond Cleavage and C–H Functionalization. Org Lett 2019; 21:9434-9437. [DOI: 10.1021/acs.orglett.9b03643] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiang-Xi Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory of Functional Metal−Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, China
| | - Fan Teng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jian-Nan Xiang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Wei Deng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| | - Jin-Heng Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
- Key Laboratory of Functional Metal−Organic Compounds of Hunan Province, Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, China
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
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29
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Zeng Q, Dong K, Pei C, Dong S, Hu W, Qiu L, Xu X. Divergent Construction of Macrocyclic Alkynes via Catalytic Metal Carbene C(sp2)–H Insertion and the Buchner Reaction. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04199] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Qian Zeng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Kuiyong Dong
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Chao Pei
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Shanliang Dong
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Wenhao Hu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Lihua Qiu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Xinfang Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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30
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Zhang C, Hong K, Dong S, Pei C, Zhang X, He C, Hu W, Xu X. Gold(I)-Catalyzed Aromatization: Expeditious Synthesis of Polyfunctionalized Naphthalenes. iScience 2019; 21:499-508. [PMID: 31710965 PMCID: PMC6849331 DOI: 10.1016/j.isci.2019.10.042] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 08/21/2019] [Accepted: 10/22/2019] [Indexed: 11/17/2022] Open
Abstract
A gold-catalyzed 6-endo-dig carbocyclization of alkyne with the pendent diazo group is reported. It provides an expeditious approach for the synthesis of multi-functionalized naphthalene derivatives under mild conditions. Mechanistic studies suggest that a vinyl gold carbene is generated as the key intermediate in this cascade transformation that smoothly delivers naphthalene products through an unprecedented stepwise aromatization or an intermolecular aromatic substitution process. The unique endocyclic vinyl species is inaccessible with other precursors; thus, novel carbene cascade transformations could be envisioned with the current catalytic model. Functional groups, such as alkenyl, hydroxyl, amino, and carboxyl groups, remain untouched under these conditions. In addition, the utility of these generated 2-carboxyl naphthalenes is illustrated by the synthesis of chiral 1,2′-binaphthalene ligands and π-conjugated polycyclic hydrocarbons (CPHs). A general method for the construction of multi-functionalized naphthalenes First 6-endo-dig diazo-yne carbocyclization leading to the vinyl gold carbene Expeditious access to naphthalenes with broad functional group compatibility Applications for the synthesis of chiral 1,2′-binaphthalene ligands and CPHs
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Affiliation(s)
- Cheng Zhang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, China
| | - Kemiao Hong
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, China
| | - Shanliang Dong
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, China
| | - Chao Pei
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, China
| | - Xiaolu Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, China
| | - Ciwang He
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - Xinfang Xu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, China.
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31
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Meng F, Zhang H, Li J, Chun J, Shi Y, He H, Chen B, Gao Z, Zhu Y. Highly Selective and Switchable Access to Tetrasubstituted Alkenyl Sulfones and Naphthyl Sulfones: 1,4-Aryl Migration versus Cyclization. Org Lett 2019; 21:8537-8542. [DOI: 10.1021/acs.orglett.9b03003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Fei Meng
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Honglin Zhang
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Jie Li
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Jianlin Chun
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yun Shi
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Han He
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Bin Chen
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhenbo Gao
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
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32
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Huang J, Hu X, Chen F, Gui J, Zeng W. Rhodium(i)-catalyzed vinylation/[2 + 1] carbocyclization of 1,6-enynes with α-diazocarbonyl compounds. Org Biomol Chem 2019; 17:7042-7054. [PMID: 31304502 DOI: 10.1039/c9ob01028a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A sequential Rh(i)-catalyzed vinylation/[2 + 1]carbocyclization between enynes and diazo compounds has been developed. This transformation features a wide range of enynes and acceptor/acceptor diazo compounds, providing easy access to versatile vinyl-substituted azabicyclo[3.1.0]hexanes having a broad tolerance to functional groups.
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Affiliation(s)
- Junmin Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, Guangdong Engineering Research Center for Green Fine Chemicals, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China.
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33
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Fuentespina RP, Garcia de la Cruz JA, Durin G, Mamane V, Weibel JM, Pale P. Borylation and rearrangement of alkynyloxiranes: a stereospecific route to substituted α-enynes. Beilstein J Org Chem 2019; 15:1416-1424. [PMID: 31293691 PMCID: PMC6604752 DOI: 10.3762/bjoc.15.141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 06/07/2019] [Indexed: 12/05/2022] Open
Abstract
1,3-Enynes are important building blocks in organic synthesis and also constitute the key motif in various bioactive natural products and functional materials. However, synthetic approaches to stereodefined substituted 1,3-enynes remain a challenge, as they are limited to Wittig and cross-coupling reactions. Herein, stereodefined 1,3-enynes, including tetrasubstituted ones, were straightforwardly synthesized from cis or trans-alkynylated oxiranes in good to excellent yields by a one-pot cascade process. The procedure relies on oxirane deprotonation, borylation and a stereospecific rearrangement of the so-formed alkynyloxiranyl borates. This stereospecific process overall transfers the cis or trans-stereochemistry of the starting alkynyloxiranes to the resulting 1,3-enynes.
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Affiliation(s)
- Ruben Pomar Fuentespina
- Laboratoire de Synthèse, Réactivité Organiques & Catalyse, associé au CNRS, Institut de Chimie, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - José Angel Garcia de la Cruz
- Laboratoire de Synthèse, Réactivité Organiques & Catalyse, associé au CNRS, Institut de Chimie, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Gabriel Durin
- Laboratoire de Synthèse, Réactivité Organiques & Catalyse, associé au CNRS, Institut de Chimie, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Victor Mamane
- Laboratoire de Synthèse, Réactivité Organiques & Catalyse, associé au CNRS, Institut de Chimie, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Jean-Marc Weibel
- Laboratoire de Synthèse, Réactivité Organiques & Catalyse, associé au CNRS, Institut de Chimie, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Patrick Pale
- Laboratoire de Synthèse, Réactivité Organiques & Catalyse, associé au CNRS, Institut de Chimie, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
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34
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Govdi AI, Danilkina NA, Ponomarev AV, Balova IA. 1-Iodobuta-1,3-diynes in Copper-Catalyzed Azide-Alkyne Cycloaddition: A One-Step Route to 4-Ethynyl-5-iodo-1,2,3-triazoles. J Org Chem 2019; 84:1925-1940. [PMID: 30632741 DOI: 10.1021/acs.joc.8b02916] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Cu-catalyzed 1,3-dipolar cycloaddition of iododiacetylenes with organic azides using iodotris(triphenylphosphine)copper(I) as a catalyst was found to be an efficient one-step synthetic route to 5-iodo-4-ethynyltriazoles. The reaction is tolerant to various functional groups in both butadiyne and azide moieties. The synthetic application of 5-iodo-4-ethynyl triazoles obtained was also evaluated: the Sonogashira coupling with alkynes resulted in unsymmetrically substituted triazole-fused enediyne systems, while the Suzuki reaction yielded the corresponding 5-aryl-4-ethynyl triazoles.
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Affiliation(s)
- Anastasia I Govdi
- Institute of Chemistry , Saint Petersburg State University (SPbU) , Universitetskaya nab. 7/9 , Saint Petersburg 199034 , Russia
| | - Natalia A Danilkina
- Institute of Chemistry , Saint Petersburg State University (SPbU) , Universitetskaya nab. 7/9 , Saint Petersburg 199034 , Russia
| | - Alexander V Ponomarev
- Institute of Chemistry , Saint Petersburg State University (SPbU) , Universitetskaya nab. 7/9 , Saint Petersburg 199034 , Russia
| | - Irina A Balova
- Institute of Chemistry , Saint Petersburg State University (SPbU) , Universitetskaya nab. 7/9 , Saint Petersburg 199034 , Russia
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35
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Zamani F, Babaahmadi R, Yates BF, Gardiner MG, Ariafard A, Pyne SG, Hyland CJT. Dual Gold‐Catalyzed Cycloaromatization of Unconjugated (
E
)‐Enediynes. Angew Chem Int Ed Engl 2019; 58:2114-2119. [DOI: 10.1002/anie.201810794] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/25/2018] [Indexed: 01/27/2023]
Affiliation(s)
- Farzad Zamani
- School of Chemistry University of Wollongong Wollongong New South Wales 2522 Australia
| | - Rasool Babaahmadi
- School of Physical Sciences Discipline of Chemistry University of Tasmania Hobart Tasmania 7001 Australia
| | - Brian F. Yates
- School of Physical Sciences Discipline of Chemistry University of Tasmania Hobart Tasmania 7001 Australia
| | - Michael G. Gardiner
- School of Physical Sciences Discipline of Chemistry University of Tasmania Hobart Tasmania 7001 Australia
| | - Alireza Ariafard
- School of Physical Sciences Discipline of Chemistry University of Tasmania Hobart Tasmania 7001 Australia
| | - Stephen G. Pyne
- School of Chemistry University of Wollongong Wollongong New South Wales 2522 Australia
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36
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Zamani F, Babaahmadi R, Yates BF, Gardiner MG, Ariafard A, Pyne SG, Hyland CJT. Dual Gold‐Catalyzed Cycloaromatization of Unconjugated (
E
)‐Enediynes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201810794] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Farzad Zamani
- School of Chemistry University of Wollongong Wollongong New South Wales 2522 Australia
| | - Rasool Babaahmadi
- School of Physical Sciences Discipline of Chemistry University of Tasmania Hobart Tasmania 7001 Australia
| | - Brian F. Yates
- School of Physical Sciences Discipline of Chemistry University of Tasmania Hobart Tasmania 7001 Australia
| | - Michael G. Gardiner
- School of Physical Sciences Discipline of Chemistry University of Tasmania Hobart Tasmania 7001 Australia
| | - Alireza Ariafard
- School of Physical Sciences Discipline of Chemistry University of Tasmania Hobart Tasmania 7001 Australia
| | - Stephen G. Pyne
- School of Chemistry University of Wollongong Wollongong New South Wales 2522 Australia
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37
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Jiao MJ, Liu D, Hu XQ, Xu PF. Photocatalytic decarboxylative [2 + 2 + 1] annulation of 1,6-enynes with N-hydroxyphthalimide esters for the synthesis of indene-containing polycyclic compounds. Org Chem Front 2019. [DOI: 10.1039/c9qo01166h] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
An efficient photoredox-mediated [2 + 2 + 1] annulation of 1,6-enynes with N-hydroxyphthalimide esters was reported for the synthesis of spiro and non-spiro indene-containing polycyclic frameworks.
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Affiliation(s)
- Meng-Jie Jiao
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
| | - Dan Liu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
| | - Xiu-Qin Hu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- China
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38
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Liu B, Cheng J, Li Y, Li JH. Oxidative tandem annulation of 1-(2-ethynylaryl)prop-2-en-1-ones catalyzed by cooperative iodine and TBHP. Chem Commun (Camb) 2019; 55:667-670. [DOI: 10.1039/c8cc09271k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Metal-free I2-catalyzed tandem annulation of 1,6-enynes to access 1H-cyclopropa-[b]naphthalene-2,7-diones using TBHP is presented.
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Affiliation(s)
- Bang Liu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Jiang Cheng
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- Changzhou University
- Changzhou 213164
- China
| | - Yang Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
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39
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Yu JX, Niu S, Hu M, Xiang JN, Li JH. Metal-free oxidative [2+2+1] heteroannulation of 1,7-enynes with thiocyanates toward thieno[3,4-c]quinolin-4(5H)-ones. Chem Commun (Camb) 2019; 55:6727-6730. [PMID: 31119230 DOI: 10.1039/c9cc02242b] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A new metal-free oxidative [2+2+1] heteroannulation of 1,7-enynes with thiocyanates for producing thieno[3,4-c]quinolin-4(5H)-ones is presented. This reaction employs benzoylperoxide (BPO) as the oxidant and sodium thiocyanate as the sulfur source to enable the formation of three chemical bonds, two C-S bonds and one C-C bond, in a single reaction, and represents a new, practical access to S-heterocycles with the avoidance of the use of metal catalysts and excess bases.
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Affiliation(s)
- Jiang-Xi Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China.
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40
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Wang YC, Wang RX, Qiu G, Zhou H, Xie W, Liu JB. ortho-Amide-directed 2,4-dibromohydration of conjugated enynes. Org Chem Front 2019. [DOI: 10.1039/c9qo00540d] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A NBS-mediated and ortho-amide-directed 2,4-dibromohydration of enynes is described in this paper.
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Affiliation(s)
- Yu-Chao Wang
- School of Metallurgical and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Rui-Xiang Wang
- School of Metallurgical and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Guanyinsheng Qiu
- College of Biological
- Chemical Science and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Hongwei Zhou
- College of Biological
- Chemical Science and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Wenlin Xie
- School of Chemistry and Chemical Engineering
- Hunan University of Science and Technology
- Hunan 411201
- China
| | - Jin-Biao Liu
- School of Metallurgical and Chemical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- China
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41
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Liu J, Ricke A, Yang B, Bäckvall J. Efficient Palladium-Catalyzed Aerobic Arylative Carbocyclization of Enallenynes. Angew Chem Int Ed Engl 2018; 57:16842-16846. [PMID: 30351460 PMCID: PMC6471031 DOI: 10.1002/anie.201810501] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Indexed: 12/12/2022]
Abstract
Herein, we communicate a selective and efficient protocol for oxidative arylating carbocyclization of enallenynes using O2 as the oxidant. The key to success for this aerobic transformation is the application of a specific electron transfer mediator (ETM), a bifunctional catalyst consisting of a metal-macrocycle and quinone moieties. This catalyst significantly facilitates the reoxidation of Pd0 to PdII under atmospheric pressure of O2 . Diverse functionalized enallenynes react with aryl boronic acids to afford the corresponding cyclic tetraenes in moderate to good yields.
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Affiliation(s)
- Jie Liu
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University10691StockholmSweden
| | - Alexander Ricke
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University10691StockholmSweden
| | - Bin Yang
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University10691StockholmSweden
| | - Jan‐E. Bäckvall
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University10691StockholmSweden
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42
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Liu J, Ricke A, Yang B, Bäckvall J. Efficient Palladium‐Catalyzed Aerobic Arylative Carbocyclization of Enallenynes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810501] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Jie Liu
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University 10691 Stockholm Sweden
| | - Alexander Ricke
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University 10691 Stockholm Sweden
| | - Bin Yang
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University 10691 Stockholm Sweden
| | - Jan‐E. Bäckvall
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University 10691 Stockholm Sweden
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43
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Sai M, Matsubara S. Copper‐Catalyzed Direct and Stereoselective Synthesis of Conjugated Enynes from α‐Allenols. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801211] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Masahiro Sai
- Research Foundation ITSUU LaboratoryC1232 Kanagawa Science Park R & D Building 3-2-1 Sakado, Takatsu-ku, Kawasaki Kanagawa 213-0012 Japan
| | - Seijiro Matsubara
- Department of Material Chemistry, Graduate School of EngineeringKyoto University, Kyoto-daigaku Katsura, Nishikyo-ku Kyoto 615-8510 Japan
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44
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Asahara H, Sofue A, Kuroda Y, Nishiwaki N. Alkynylation and Cyanation of Alkenes Using Diverse Properties of a Nitro Group. J Org Chem 2018; 83:13691-13699. [DOI: 10.1021/acs.joc.8b01865] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haruyasu Asahara
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
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45
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Watanabe T, Abe H, Mutoh Y, Saito S. Ruthenium‐Catalyzed Cycloisomerization of 2‐Alkynylstyrenes via 1,2‐Carbon Migration That Leads to Substituted Naphthalenes. Chemistry 2018; 24:11545-11549. [DOI: 10.1002/chem.201802413] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Indexed: 01/01/2023]
Affiliation(s)
- Takuma Watanabe
- Department of Chemistry, Faculty of ScienceTokyo University of Science 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
| | - Haruka Abe
- Department of Chemistry, Faculty of ScienceTokyo University of Science 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
| | - Yuichiro Mutoh
- Department of Chemistry, Faculty of ScienceTokyo University of Science 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
| | - Shinichi Saito
- Department of Chemistry, Faculty of ScienceTokyo University of Science 1-3 Kagurazaka Shinjuku-ku Tokyo 162-8601 Japan
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46
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Ouyang XH, Song RJ, Li JH. Developments in the Chemistry of α-Carbonyl Alkyl Bromides. Chem Asian J 2018; 13:2316-2332. [DOI: 10.1002/asia.201800630] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 07/01/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Xuan-Hui Ouyang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
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47
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Kaufmann J, Jäckel E, Haak E. Rutheniumkatalysierte Kaskadenanellierung von Indol mit Propargylalkoholen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801846] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Julia Kaufmann
- Institut für Chemie; Otto von Guericke Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Deutschland
| | - Elisabeth Jäckel
- Institut für Chemie; Otto von Guericke Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Deutschland
| | - Edgar Haak
- Institut für Chemie; Otto von Guericke Universität Magdeburg; Universitätsplatz 2 39106 Magdeburg Deutschland
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48
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Kaufmann J, Jäckel E, Haak E. Ruthenium-Catalyzed Cascade Annulation of Indole with Propargyl Alcohols. Angew Chem Int Ed Engl 2018; 57:5908-5911. [DOI: 10.1002/anie.201801846] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Indexed: 01/22/2023]
Affiliation(s)
- Julia Kaufmann
- Institute of Chemistry; Otto von Guericke University Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Elisabeth Jäckel
- Institute of Chemistry; Otto von Guericke University Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
| | - Edgar Haak
- Institute of Chemistry; Otto von Guericke University Magdeburg; Universitätsplatz 2 39106 Magdeburg Germany
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49
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50
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Wan Y, Zheng X, Ma C. Conjugated Dienyne-Imides as Robust Precursors of 1-Azatrienes for 6π Electrocyclizations to Furo[2,3-b
]dihydropyridine Cores. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800303] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yanjun Wan
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
| | - Xuchun Zheng
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
| | - Cheng Ma
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
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