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Tanaka K, Morita F. Enantioselective Helicene Synthesis by Rhodium-Catalyzed [2+2+2] Cycloaddition. J SYN ORG CHEM JPN 2022. [DOI: 10.5059/yukigoseikyokaishi.80.1019] [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)
- Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology
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Regiodivergent Synthesis and π‐Stacking‐Induced Chiral Self‐Recognition of Hexabenzocoronene‐Based [6]Helicenes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kohrs D, Volkmann J, Wegner HA. Cycloparaphenylenes via [2+2+2] Cycloaddition. Chem Commun (Camb) 2022; 58:7483-7494. [DOI: 10.1039/d2cc02289c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The [2+2+2] cycloaddition (CA) offers great potential as an atom economic method for the formation of substituted aromatic rings. In this article, we highlight the application of this versatile method...
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Nan J, Zhang J, Hu Y, Wang C, Wang T, Wang W, Ma Y, Szostak M. Cu II-Catalyzed Coupling with Two Ynone Units by Selective Triple and Sigma C-C and C-H Bond Cleavages. Org Lett 2021; 23:1928-1933. [PMID: 33570962 DOI: 10.1021/acs.orglett.1c00371] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We report a new copper-catalyzed [2 + 2 + 1] annulation process through the selective cleavage of sigma and triple C-C and C-H bonds using two ynone units. This new methodology involves breaking multiple chemical bonds in a single operation, including C≡C, C-C, C-H, and N-O. These high-value adducts lead to a diverse collection of synthetically challenging trisubstituted indolizines by the simultaneous engagement of different bond-breaking events and show excellent fluorescence in green aqueous solutions.
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Affiliation(s)
- Jiang Nan
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Jiawen Zhang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yan Hu
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Chao Wang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Tingting Wang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Weitao Wang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yangmin Ma
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Michal Szostak
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.,Department of Chemistry, Rutgers University, Newark, New Jersey 07102, United States
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Honjo Y, Shibata Y, Tanaka K. Rhodium-Catalyzed [2+1+2+1] Cycloaddition of Benzoic Acids with Diynes through Decarboxylation and C≡C Triple Bond Cleavage. Chemistry 2019; 25:9427-9432. [PMID: 30945369 DOI: 10.1002/chem.201901050] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Indexed: 11/11/2022]
Abstract
It has been established that an electron-deficient cyclopentadienyl rhodium(III) (CpE RhIII ) complex catalyzes the oxidative and decarboxylative [2+1+2+1] cycloaddition of benzoic acids with diynes through C≡C triple bond cleavage, leading to fused naphthalenes. This cyclotrimerization is initiated by directed ortho C-H bond cleavage of a benzoic acid, and the subsequent regioselective alkyne insertion and decarboxylation produce a five-membered rhodacycle. The electron-deficient nature of the CpE RhIII complex promotes reductive elimination giving a cyclobutadiene-rhodium(I) complex rather than the second intermolecular alkyne insertion. The oxidative addition of the thus generated cyclobutadiene to rhodium(I) (formal C≡C triple bond cleavage) followed by the second intramolecular alkyne insertion and reductive elimination give the corresponding [2+1+2+1] cycloaddition product. The synthetic utility of the present [2+1+2+1] cycloaddition was demonstrated in the facile synthesis of a donor-acceptor [5]helicene and a hemi-hexabenzocoronene by a combination with the chemoselective Scholl reaction.
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Affiliation(s)
- Yusaku Honjo
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Yu Shibata
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
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Yamano R, Kinoshita S, Shibata Y, Tanaka K. Substituent‐Controlled and Rhodium‐Catalyzed Intramolecular [2+2+2] and [2+1+2+1] Cycloadditions of Electron‐Deficient Triynes. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800394] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ryota Yamano
- Department of Chemical Science and Engineering Tokyo Institute of Technology O‐okayama, Meguro‐ku 152‐8550 Tokyo Japan
| | - Suzuka Kinoshita
- Department of Chemical Science and Engineering Tokyo Institute of Technology O‐okayama, Meguro‐ku 152‐8550 Tokyo Japan
| | - Yu Shibata
- Department of Chemical Science and Engineering Tokyo Institute of Technology O‐okayama, Meguro‐ku 152‐8550 Tokyo Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering Tokyo Institute of Technology O‐okayama, Meguro‐ku 152‐8550 Tokyo Japan
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Yamano R, Shibata Y, Tanaka K. Synthesis of Single and Double Dibenzohelicenes by Rhodium‐Catalyzed Intramolecular [2+2+2] and [2+1+2+1] Cycloaddition. Chemistry 2018; 24:6364-6370. [DOI: 10.1002/chem.201706008] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Indexed: 02/02/2023]
Affiliation(s)
- Ryota Yamano
- Department of Chemical Science and Engineering Tokyo Institute of Technology, O-okayama, Meguro-ku Tokyo 152-8550 Japan
| | - Yu Shibata
- Department of Chemical Science and Engineering Tokyo Institute of Technology, O-okayama, Meguro-ku Tokyo 152-8550 Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering Tokyo Institute of Technology, O-okayama, Meguro-ku Tokyo 152-8550 Japan
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Boon BA, Green AG, Liu P, Houk KN, Merlic CA. Using Ring Strain to Control 4π-Electrocyclization Reactions: Torquoselectivity in Ring Closing of Medium-Ring Dienes and Ring Opening of Bicyclic Cyclobutenes. J Org Chem 2017; 82:4613-4624. [DOI: 10.1021/acs.joc.7b00203] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Byron A. Boon
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Aaron G. Green
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Peng Liu
- Department
of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260-3900, United States
| | - K. N. Houk
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
| | - Craig A. Merlic
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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Matsui K, Fushimi M, Segawa Y, Itami K. Synthesis, Structure, and Reactivity of a Cylinder-Shaped Cyclo[12]orthophenylene[6]ethynylene: Toward the Synthesis of Zigzag Carbon Nanobelts. Org Lett 2016; 18:5352-5355. [DOI: 10.1021/acs.orglett.6b02702] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Katsuma Matsui
- Graduate
School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Masako Fushimi
- Graduate
School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Yasutomo Segawa
- Graduate
School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- JST, ERATO, Itami
Molecular Nanocarbon Project, Chikusa, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Graduate
School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- JST, ERATO, Itami
Molecular Nanocarbon Project, Chikusa, Nagoya 464-8602, Japan
- Institute
of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
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Abstract
The first synthesis of a cyclic oligophenylene possessing a radial π system was reported in 2008. In the short period that has elapsed since, there has been an ever-increasing level of interest in molecules of this type, as evidenced by the volume of publications in this area. This interest has been driven by the highly unusual properties of these molecules in comparison to their linear oligoarene analogues, as well as the diverse array of potential applications for them. Notably, CPPs and related structures were proposed as viable templates for the bottom-up synthesis of single-walled carbon nanotubes (SWCNTs), a proposition which has recently been realised. This review gives a comprehensive and strictly chronological (by date of first online publication) treatment of literature reports from the inception of the field, with emphasis on both synthesis and properties of CPPs and related nanohoops. (The scope of this review is restricted to molecules possessing a radial π system consisting entirely of subunits which are aromatic in isolation, e.g. CPPs, but not cycloparaphenyleneacetylenes or cyclopolyacetylenes).
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Affiliation(s)
- Simon E Lewis
- Department of Chemistry, University of Bath, Bath, BA2 7AY, UK.
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Tanaka K, Kimura Y, Murayama K. Enantioselective Helicene Synthesis by Rhodium-Catalyzed [2+2+2] Cycloadditions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20140291] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ken Tanaka
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology
- Department of Applied Chemistry, Faculty of Engineering, Tokyo University of Agriculture and Technology
- Japan Science and Technology Agency (JST), ACT-C
| | - Yuki Kimura
- Department of Applied Chemistry, Faculty of Engineering, Tokyo University of Agriculture and Technology
| | - Koichi Murayama
- Department of Applied Chemistry, Faculty of Engineering, Tokyo University of Agriculture and Technology
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Fernández M, Ferré M, Pla-Quintana A, Parella T, Pleixats R, Roglans A. Rhodium-NHC Hybrid Silica Materials as Recyclable Catalysts for [2+2+2] Cycloaddition Reactions of Alkynes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402649] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Tran-Van AF, Wegner HA. Nano-rings with a handle - Synthesis of substituted cycloparaphenylenes. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:1320-33. [PMID: 25247115 PMCID: PMC4168862 DOI: 10.3762/bjnano.5.145] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 07/25/2014] [Indexed: 05/04/2023]
Abstract
The research of cycloparaphenylenes (CPPs), the smallest armchair carbon nanotube, has been a quest for the past decades which experienced a revival in 2008 when the first synthesis was achieved. Since then CPPs with various ring sizes have been realized. The incorporation of substituents and the synthesis of CPPs with building blocks different from phenyl rings bear challenges of their own. Such structures, however, are highly interesting, as they allow for an incorporation of CPPs as defined nano-objects for other applications. Therefore, this review provides a status report about the current efforts in synthesizing CPPs beyond the parent unsubstituted oligo-phenylene structure.
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Affiliation(s)
- Anne-Florence Tran-Van
- Department of Chemistry, Basel University, St Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Hermann A Wegner
- Institut für Organische Chemie, Justus-Liebig-Universität, Heinrich-Buff-Ring 62, D-35392 Giessen, Deutschland
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