1
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Duc DX. Recent Achievement in the Synthesis of Benzo[b]furans. Curr Org Synth 2020; 17:498-517. [PMID: 32586253 DOI: 10.2174/1570179417666200625212639] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 05/21/2020] [Accepted: 05/28/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Benzo[b]furan derivatives are oxygen-containing heterocyclic compounds consisting of fused benzene and furan rings and are present in a large number of natural and non-natural compounds. This class of compounds has a wide spectrum of biological activities, such as antiarrhythmic, anticancer, inflammatory, antioxidant, antimicrobial, and antiviral. Furthermore, benzo[b]furan derivatives have also been applied in various areas, such as organic electroluminescence device materials and organic dyes, photosensitizing material, organic synthesis as building blocks or intermediates. Because of a broad range of applicability, the synthesis of benzo[b]furan derivative has drawn great attention of chemists and many studies on the synthesis of this class of compounds have been reported recently. This review will give an overview of benzo[b]furan preparation based on studies dating back to the year 2012. OBJECTIVE In this review, recent development in the synthesis of benzo[b]furans are discussed. There has been increasingly new methodologies for the construction of benzo[b]furans skeleton to improve efficiency or develop environmentally friendly procedures. In some studies, reaction mechanisms were also outlined. CONCLUSION Many methods for the synthesis of benzo[b]furans have been reported recently. Most of them involve cyclization or cycloisomerization processes. Unquestionably, more imaginative strategies for the construction of benzo[b]furan skeleton will be established in the near future. Application of known methods to natural products or drug synthesis, on industrial scale for the synthesis of economically or medicinally important benzo[ b]furans will probably be paid attention to.
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Affiliation(s)
- Dau Xuan Duc
- Department of Chemistry, Vinh University, Vinh City, Vietnam
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2
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Chiummiento L, D’Orsi R, Funicello M, Lupattelli P. Last Decade of Unconventional Methodologies for the Synthesis of Substituted Benzofurans. Molecules 2020; 25:E2327. [PMID: 32429435 PMCID: PMC7288127 DOI: 10.3390/molecules25102327] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/13/2020] [Accepted: 05/13/2020] [Indexed: 12/13/2022] Open
Abstract
This review describes the progress of the last decade on the synthesis of substituted benzofurans, which are useful scaffolds for the synthesis of numerous natural products and pharmaceuticals. In particular, new intramolecular and intermolecular C-C and/or C-O bond-forming processes, with transition-metal catalysis or metal-free are summarized. (1) Introduction. (2) Ring generation via intramolecular cyclization. (2.1) C7a-O bond formation: (route a). (2.2) O-C2 bond formation: (route b). (2.3) C2-C3 bond formation: (route c). (2.4) C3-C3a bond formation: (route d). (3) Ring generation via intermolecular cyclization. (3.1) C7a-O and C3-C3a bond formation (route a + d). (3.2) O-C2 and C2-C3 bond formation: (route b + c). (3.3) O-C2 and C3-C3a bond formation: (route b + d). (4) Benzannulation. (5) Conclusion.
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Affiliation(s)
- Lucia Chiummiento
- Department of Science, Via dell’Ateneo Lucano, 10, 85100 Potenza, Italy; (R.D.); (M.F.); (P.L.)
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3
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Tyagi A, Reshi NUD, Daw P, Bera JK. Palladium complexes with an annellated mesoionic carbene (MIC) ligand: catalytic sequential Sonogashira coupling/cyclization reaction for one-pot synthesis of benzofuran, indole, isocoumarin and isoquinolone derivatives. Dalton Trans 2020; 49:15238-15248. [DOI: 10.1039/d0dt02918a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Pd(ii) complex containing a mesoionic carbene and phosphine ligands is an efficient catalyst for tandem coupling/cyclization reaction.
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Affiliation(s)
- Akshi Tyagi
- Department of Chemistry and Centre for Environmental Sciences and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Noor U Din Reshi
- Department of Chemistry and Centre for Environmental Sciences and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Prosenjit Daw
- Department of Chemistry and Centre for Environmental Sciences and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Jitendra K. Bera
- Department of Chemistry and Centre for Environmental Sciences and Engineering
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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4
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Saxena P, Maida N, Kapur M. Dioxazolones as masked ester surrogates in the Pd(ii)-catalyzed direct C-H arylation of 6,5-fused heterocycles. Chem Commun (Camb) 2019; 55:11187-11190. [PMID: 31465039 DOI: 10.1039/c9cc05563k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A simple and effective Pd(ii)-catalyzed regioselective C(2)-H arylation of 6,5-fused heterocycles with dioxazolones as a masked ester surrogate under mild conditions is reported. The significance of the arylation is highlighted by the new reactivity demonstrated in dioxazolones via proximal C-H activation of the cyclic carbonate of the hydroxamic acid functionality under protic conditions.
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Affiliation(s)
- Paridhi Saxena
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal Bypass Road, Bhopal 462066, MP, India.
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5
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Schultze C, Schmidt B. Functionalized Benzofurans via Microwave‐Promoted Tandem Claisen‐Rearrangement/5‐
endo
‐dig Cyclization. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Christiane Schultze
- Universitaet Potsdam, Institut fuer Chemie Karl‐Liebknecht‐Straße 24‐25 Potsdam‐Golm D‐14476 Germany
| | - Bernd Schmidt
- Universitaet Potsdam, Institut fuer Chemie Karl‐Liebknecht‐Straße 24‐25 Potsdam‐Golm D‐14476 Germany
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6
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Watanabe K, Mino T, Masuda C, Yoshida Y, Sakamoto M. Synthesis of 7-Allylated Benzofuran Derivatives from o-
Allyloxyethynylbenzene via Claisen Rearrangement and TBAF-Catalyzed Annulation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801800] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Kohei Watanabe
- Department of Applied Chemistry and Biotechnology; Graduate School of Engineering; Chiba University; 1-33, Yayoi-cho, Inage-ku Chiba 263-8522 Japan
| | - Takashi Mino
- Department of Applied Chemistry and Biotechnology; Graduate School of Engineering; Chiba University; 1-33, Yayoi-cho, Inage-ku Chiba 263-8522 Japan
- Molecular Chirality Research Center; Chiba University; 1-33, Yayoi-cho, Inage-ku Chiba 263-8522 Japan
| | - Chihiro Masuda
- Department of Applied Chemistry and Biotechnology; Graduate School of Engineering; Chiba University; 1-33, Yayoi-cho, Inage-ku Chiba 263-8522 Japan
| | - Yasushi Yoshida
- Department of Applied Chemistry and Biotechnology; Graduate School of Engineering; Chiba University; 1-33, Yayoi-cho, Inage-ku Chiba 263-8522 Japan
- Molecular Chirality Research Center; Chiba University; 1-33, Yayoi-cho, Inage-ku Chiba 263-8522 Japan
| | - Masami Sakamoto
- Department of Applied Chemistry and Biotechnology; Graduate School of Engineering; Chiba University; 1-33, Yayoi-cho, Inage-ku Chiba 263-8522 Japan
- Molecular Chirality Research Center; Chiba University; 1-33, Yayoi-cho, Inage-ku Chiba 263-8522 Japan
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7
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8
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Rong Z, Gao K, Zhou L, Lin J, Qian G. Facile synthesis of 2-substituted benzo[b]furans and indoles by copper-catalyzed intramolecular cyclization of 2-alkynyl phenols and tosylanilines. RSC Adv 2019; 9:17975-17978. [PMID: 35520559 PMCID: PMC9064688 DOI: 10.1039/c9ra01260e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 04/19/2019] [Indexed: 01/22/2023] Open
Abstract
A catalytic amount of CuCl and Cs2CO3 was employed to synthesize a variety of 2-substituted benzo[b]furans and indoles by an intramolecular cyclization of 2-alkynyl phenols and tosylanilines. This protocol features mild conditions, high yields and broad substrate scope, which makes it a practical method for the synthesis of 2-substituted benzo[b]furans and indoles. A facile and inexpensive copper-catalyzed method was developed for the synthesis of 2-substituted benzo[b]furans and indoles.![]()
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Affiliation(s)
- Zhouting Rong
- College of Biological and Environmental Sciences
- Zhejiang Wanli University
- Ningbo 315100
- People's Republic of China
| | - Kexin Gao
- College of Biological and Environmental Sciences
- Zhejiang Wanli University
- Ningbo 315100
- People's Republic of China
| | - Lei Zhou
- College of Biological and Environmental Sciences
- Zhejiang Wanli University
- Ningbo 315100
- People's Republic of China
| | - Jianyuan Lin
- College of Biological and Environmental Sciences
- Zhejiang Wanli University
- Ningbo 315100
- People's Republic of China
| | - Guoying Qian
- College of Biological and Environmental Sciences
- Zhejiang Wanli University
- Ningbo 315100
- People's Republic of China
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9
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Li M, Ye Y, He L, Hui M, Ng TB, Wong JH, Tsui GC. Domino Cyclization/Trifluoromethylation of 2‐Alknylphenols for the Synthesis of 3‐(Trifluoromethyl)benzofurans and Evaluation of their Antibacterial and Antifungal Activities. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800651] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Mengwan Li
- Department of ChemistryThe Chinese University of Hong Kong
| | - Yibin Ye
- Department of ChemistryThe Chinese University of Hong Kong
| | - Lisi He
- Department of ChemistryThe Chinese University of Hong Kong
| | - Mamie Hui
- Department of MicrobiologyThe Chinese University of Hong Kong
| | - Tzi Bun Ng
- School of Biomedical SciencesThe Chinese University of Hong Kong
| | - Jack Ho Wong
- School of Biomedical SciencesThe Chinese University of Hong Kong
- Shenzhen Research InstituteThe Chinese University of Hong Kong
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10
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Octa-Smolin F, van der Vight F, Yadav R, Bhangu J, Soloviova K, Wölper C, Daniliuc CG, Strassert CA, Somnitz H, Jansen G, Niemeyer J. Synthesis of Furan-Annelated BINOL Derivatives: Acid-Catalyzed Cyclization Induces Partial Racemization. J Org Chem 2018; 83:14568-14587. [PMID: 30359025 DOI: 10.1021/acs.joc.8b02353] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
In this account, we describe the synthesis of a series of BINOL-based bis- and trisphosphoric acids 11d/e/f, which commonly feature an unusual phosphoric acid monoester motif. This motif is generated by an acid-catalyzed 5- endo- dig cyclization of the 3-alkynyl-substituted BINOL precursors to give the corresponding Furan-annelated derivatives, followed by phosphorylation of the remaining phenolic alcohols. In the cyclization reaction, we observed an unexpected partial racemization in the bis- and tris-BINOL scaffolds, leading to mixtures of diastereomers that were separated and characterized spectroscopically and by X-ray crystal structure analyses. The cyclization and racemization processes were investigated both experimentally and by DFT-calculations, showing that although the cyclization proceeds faster, the barrier for the acid-catalyzed binaphthyl-racemization is only slightly higher.
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Affiliation(s)
- Frescilia Octa-Smolin
- Institute of Organic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) , University of Duisburg-Essen , Universitätsstrasse 7 , 45141 Essen , Germany
| | - Felix van der Vight
- Theoretical Organic Chemistry/Theoretical Chemistry , University of Duisburg-Essen , Universitätsstrasse 7 , 45141 Essen , Germany
| | - Rohan Yadav
- Institute of Organic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) , University of Duisburg-Essen , Universitätsstrasse 7 , 45141 Essen , Germany
| | - Jasmine Bhangu
- Institute of Organic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) , University of Duisburg-Essen , Universitätsstrasse 7 , 45141 Essen , Germany
| | - Kateryna Soloviova
- Institut für Anorganische und Analytische Chemie and Center for Nanotechnology , Westfälische Wilhelms-Universität Münster , Heisenbergstr. 11 , 48149 Münster , Germany
| | - Christoph Wölper
- Institute of Inorganic Chemistry , University of Duisburg-Essen , Universitätsstrasse 7 , 45141 Essen , Germany
| | | | - Cristian A Strassert
- Institut für Anorganische und Analytische Chemie and Center for Nanotechnology , Westfälische Wilhelms-Universität Münster , Heisenbergstr. 11 , 48149 Münster , Germany
| | - Holger Somnitz
- Theoretical Organic Chemistry/Theoretical Chemistry , University of Duisburg-Essen , Universitätsstrasse 7 , 45141 Essen , Germany
| | - Georg Jansen
- Theoretical Organic Chemistry/Theoretical Chemistry , University of Duisburg-Essen , Universitätsstrasse 7 , 45141 Essen , Germany
| | - Jochen Niemeyer
- Institute of Organic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) , University of Duisburg-Essen , Universitätsstrasse 7 , 45141 Essen , Germany
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11
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Hayashi T, Ohishi Y, Hee-Soo S, Abe H, Matsumoto S, Inouye M. Spontaneous Helix Formation of “meta”-Ethynylphenol Oligomers by Sequential Intramolecular Hydrogen Bonding inside the Cavities. J Org Chem 2018; 83:8724-8730. [DOI: 10.1021/acs.joc.8b00996] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Tomoya Hayashi
- Graduate School of Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Yuki Ohishi
- Graduate School of Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - So Hee-Soo
- Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
| | - Hajime Abe
- Graduate School of Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
| | - Shinya Matsumoto
- Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
| | - Masahiko Inouye
- Graduate School of Pharmaceutical Sciences, University of Toyama, Toyama 930-0194, Japan
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12
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[(PhCH2O)2P(CH3)2CHNCH(CH3)2]2PdCl2/CuI as Cocatalyst for Coupling-Cyclization of 2-Iodophenol with Terminal Alkynes in Water. Catalysts 2018. [DOI: 10.3390/catal8040136] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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13
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Liu Y, Lu T, Tang WF, Gao J. Transition-metal-free base catalyzed intramolecular cyclization of 2-ynylphenols for efficient and facile synthesis of 2-substituted benzo[b]furans. RSC Adv 2018; 8:28637-28641. [PMID: 35542491 PMCID: PMC9084342 DOI: 10.1039/c8ra03882a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 08/06/2018] [Indexed: 01/12/2023] Open
Abstract
An efficient and practical transition-metal-free synthesis of 2-substituted benzo[b]furans catalyzed by readily accessible base was developed with broad substrates scope.
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Affiliation(s)
- Yong Liu
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Tao Lu
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Wei-Fang Tang
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Jian Gao
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
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14
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Kim T, Jeong KH, Kim Y, Noh T, Choi J, Ham J. Three-Component One-Pot Synthesis of Unsymmetrical Diarylalkynes by Thermocontrolled Sequential Sonogashira Reactions Using Potassium Ethynyltrifluoroborate. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Taejung Kim
- Korea Institute of Science and Technology (KIST); 679 Saimdang-ro 25451 Gangneung Republic of Korea
| | - Kyu Hyuk Jeong
- Korea Institute of Science and Technology (KIST); 679 Saimdang-ro 25451 Gangneung Republic of Korea
| | - Youngseok Kim
- Korea Institute of Science and Technology (KIST); 679 Saimdang-ro 25451 Gangneung Republic of Korea
| | - Taesub Noh
- Korea Institute of Science and Technology (KIST); 679 Saimdang-ro 25451 Gangneung Republic of Korea
- Department of Chemistry; Gangneung-Wonju National University; 7 Jukheon-gil 25457 Gangneung Republic of Korea
| | - Jaeyoung Choi
- Korea Institute of Science and Technology (KIST); 679 Saimdang-ro 25451 Gangneung Republic of Korea
| | - Jungyeob Ham
- Korea Institute of Science and Technology (KIST); 679 Saimdang-ro 25451 Gangneung Republic of Korea
- Department of Biological Chemistry; University of Science and Technology (UST); Gajung-ro 217 34113 Daejeon Republic of Korea
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15
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Watanabe K, Mino T, Ishikawa E, Okano M, Ikematsu T, Yoshida Y, Sakamoto M, Sato K, Yoshida K. Synthesis of
o
‐Allyloxy(ethynyl)benzene Derivatives by Cu‐Catalyzed Suzuki–Miyaura‐Type Reaction and Their Transformations into Heterocyclic Compounds. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700217] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kohei Watanabe
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering Chiba University 1–33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Takashi Mino
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering Chiba University 1–33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
- Molecular Chirality Research Center Chiba University 1‐33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Eri Ishikawa
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering Chiba University 1–33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Miyu Okano
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering Chiba University 1–33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Tatsuya Ikematsu
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering Chiba University 1–33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Yasushi Yoshida
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering Chiba University 1–33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
- Molecular Chirality Research Center Chiba University 1‐33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Masami Sakamoto
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering Chiba University 1–33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
- Molecular Chirality Research Center Chiba University 1‐33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Kazuki Sato
- Department of Chemistry Graduate School of Science Chiba University 1‐33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Kazuhiro Yoshida
- Molecular Chirality Research Center Chiba University 1‐33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
- Department of Chemistry Graduate School of Science Chiba University 1‐33, Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
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16
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Yang D, Zhu Y, Yang N, Jiang Q, Liu R. One-Step Synthesis of Substituted Benzofurans from ortho
- Alkenylphenols via
Palladium-Catalyzed CH Functionalization. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600082] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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17
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Watanabe K, Mino T, Ikematsu T, Hatta C, Yoshida Y, Sakamoto M. Hydrazone–palladium catalyzed annulation of 1-cinnamyloxy-2-ethynylbenzene derivatives. Org Chem Front 2016. [DOI: 10.1039/c6qo00112b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The annulation of 1-cinnamyloxy-2-ethynylbenzene derivatives using a hydrazone–palladium catalyst system proceeded smoothly and gave the corresponding 2-substituted-3-cinnamylbenzofurans in good-to-excellent yields.
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Affiliation(s)
- Kohei Watanabe
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- Chiba University
- Chiba 263-8522
- Japan
| | - Takashi Mino
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- Chiba University
- Chiba 263-8522
- Japan
| | - Tatsuya Ikematsu
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- Chiba University
- Chiba 263-8522
- Japan
| | - Chikako Hatta
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- Chiba University
- Chiba 263-8522
- Japan
| | - Yasushi Yoshida
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- Chiba University
- Chiba 263-8522
- Japan
| | - Masami Sakamoto
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- Chiba University
- Chiba 263-8522
- Japan
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18
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Yin SC, Zhou Q, Zhao XY, Shao LX. N-Heterocyclic Carbene-Palladium(II)-1-Methylimidazole Complex Catalyzed Direct C–H Bond Arylation of Benzo[b]furans with Aryl Chlorides. J Org Chem 2015; 80:8916-21. [PMID: 26272350 DOI: 10.1021/acs.joc.5b01544] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Shun-Chao Yin
- College
of Chemistry and
Materials Engineering, Wenzhou University, Chashan University Town, Wenzhou, Zhejiang Province 325035, People’s Republic of China
| | - Quan Zhou
- College
of Chemistry and
Materials Engineering, Wenzhou University, Chashan University Town, Wenzhou, Zhejiang Province 325035, People’s Republic of China
| | - Xiao-Yun Zhao
- College
of Chemistry and
Materials Engineering, Wenzhou University, Chashan University Town, Wenzhou, Zhejiang Province 325035, People’s Republic of China
| | - Li-Xiong Shao
- College
of Chemistry and
Materials Engineering, Wenzhou University, Chashan University Town, Wenzhou, Zhejiang Province 325035, People’s Republic of China
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19
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Zhao X, Zhang L, Lu X, Li T, Lu K. Synthesis of 2-Aryl and 3-Aryl Benzo[b]furan Thioethers Using Aryl Sulfonyl Hydrazides as Sulfenylation Reagents. J Org Chem 2015; 80:2918-24. [DOI: 10.1021/acs.joc.5b00146] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xia Zhao
- College
of Chemistry, Tianjin Key Laboratory of Structure and Performance
for Functional Molecules, Tianjin Normal University, Tianjin 300387, China
| | - Lipeng Zhang
- College
of Chemistry, Tianjin Key Laboratory of Structure and Performance
for Functional Molecules, Tianjin Normal University, Tianjin 300387, China
| | - Xiaoyu Lu
- College
of Chemistry, Tianjin Key Laboratory of Structure and Performance
for Functional Molecules, Tianjin Normal University, Tianjin 300387, China
| | - Tianjiao Li
- College
of Chemistry, Tianjin Key Laboratory of Structure and Performance
for Functional Molecules, Tianjin Normal University, Tianjin 300387, China
| | - Kui Lu
- College of Biotechnology, Tianjin University of Science & Technology, Tianjin 300457, China
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