51
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Harned AM. Concerning the mechanism of iodine(iii)-mediated oxidative dearomatization of phenols. Org Biomol Chem 2018. [PMID: 29542797 DOI: 10.1039/c8ob00463c] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The iodine(iii)-mediated oxidative dearomatization of phenols has proven to be a general method for the preparation of cyclohexadienones. While this is a widely used reaction, there is still a great deal of uncertainty regarding the mechanistic pathway followed by these reactions. In part, this is due to the highly unstable nature of many of the key intermediates, which makes their direct detection extremely difficult. In order to gain some insight into these mechanistic questions, DFT calculations [M06-2X/6-31+G(d) for C, H, and O and LANL2DZdp for iodine] were used to evaluate the two most commonly proposed reaction mechanisms. These results show that unimolecular fragmentation of an oxygen-bound intermediate to give a phenoxenium ion (TS1) is preferred over direct addition of the nucleophile to the aromatic ring of the activated phenol (TS3). In addition, results are presented that suggest protonation and/or hydrogen bonding may play a key role in lowering the energy of the unimolecular fragmentation pathway.
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Affiliation(s)
- Andrew M Harned
- Texas Tech University, Department of Chemistry & Biochemistry, 1204 Boston Ave., Lubbock, TX 79409-1061, USA.
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52
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Metal-free remote oxidative benzylic C−H amination of 4-methylanilides with N -fluorobenzenesulfonimide. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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53
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Beil SB, Müller T, Sillart SB, Franzmann P, Bomm A, Holtkamp M, Karst U, Schade W, Waldvogel SR. Aktive Anode auf Molybdänbasis für dehydrierende Kupplungen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712718] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Sebastian B. Beil
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
- MAterial Science IN MainZ (MAINZ); Exzellenzgraduiertenschule; Staudingerweg 9 55128 Mainz Deutschland
| | - Timo Müller
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Sydney B. Sillart
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Peter Franzmann
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
| | - Alexander Bomm
- Fraunhofer Heinrich-Hertz-Institut; Abteilung Faseroptische Sensorsysteme; Am Stollen 19H 38640 Goslar Deutschland
| | - Michael Holtkamp
- Institut für Anorganische und Analytische Chemie; Westfälische Wilhelms Universität Münster; Corrensstraße 30 48149 Münster Deutschland
| | - Uwe Karst
- Institut für Anorganische und Analytische Chemie; Westfälische Wilhelms Universität Münster; Corrensstraße 30 48149 Münster Deutschland
| | - Wolfgang Schade
- Fraunhofer Heinrich-Hertz-Institut; Abteilung Faseroptische Sensorsysteme; Am Stollen 19H 38640 Goslar Deutschland
| | - Siegfried R. Waldvogel
- Institut für Organische Chemie; Johannes Gutenberg-Universität Mainz; Duesbergweg 10-14 55128 Mainz Deutschland
- MAterial Science IN MainZ (MAINZ); Exzellenzgraduiertenschule; Staudingerweg 9 55128 Mainz Deutschland
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54
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Beil SB, Müller T, Sillart SB, Franzmann P, Bomm A, Holtkamp M, Karst U, Schade W, Waldvogel SR. Active Molybdenum-Based Anode for Dehydrogenative Coupling Reactions. Angew Chem Int Ed Engl 2018; 57:2450-2454. [DOI: 10.1002/anie.201712718] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Sebastian B. Beil
- Institute of Organic Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 55128 Mainz Germany
- Material Science in Mainz (MAINZ); Graduate School of Excellence; Staudingerweg 9 55128 Mainz Germany
| | - Timo Müller
- Institute of Organic Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Sydney B. Sillart
- Institute of Organic Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Peter Franzmann
- Institute of Organic Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 55128 Mainz Germany
| | - Alexander Bomm
- Fraunhofer Heinrich-Hertz-Institut; Abteilung Faseroptische Sensorsysteme; Am Stollen 19H 38640 Goslar Germany
| | - Michael Holtkamp
- Institute of Inorganic and Analytical Chemistry; University of Münster; Corrensstrasse 30 48149 Münster Germany
| | - Uwe Karst
- Institute of Inorganic and Analytical Chemistry; University of Münster; Corrensstrasse 30 48149 Münster Germany
| | - Wolfgang Schade
- Fraunhofer Heinrich-Hertz-Institut; Abteilung Faseroptische Sensorsysteme; Am Stollen 19H 38640 Goslar Germany
| | - Siegfried R. Waldvogel
- Institute of Organic Chemistry; Johannes Gutenberg University Mainz; Duesbergweg 10-14 55128 Mainz Germany
- Material Science in Mainz (MAINZ); Graduate School of Excellence; Staudingerweg 9 55128 Mainz Germany
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55
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Dey A, Maity S, Maiti D. Reaching the south: metal-catalyzed transformation of the aromatic para-position. Chem Commun (Camb) 2018; 52:12398-12414. [PMID: 27559937 DOI: 10.1039/c6cc05235e] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Regioselective functionalization of aromatic arenes has created a rapid insurgence in the modern era of organic chemistry. While the last few years have witnessed significant developments on site-selective ortho- and meta-C-H transformations, there existed very few reports on para-C-H functionalization. Recent advancements on template assisted protocols in para-C-H activation has emerged as a popular and convenient feat in this area. This review highlights the various protocols developed over the years for selective installation of suitable functional groups at the para-position of arenes thereby transforming them into value-added organic cores.
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Affiliation(s)
- Aniruddha Dey
- Department of Chemistry, Indian Institute of Technology Bombay, India.
| | - Soham Maity
- Department of Chemistry, Indian Institute of Technology Bombay, India.
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, India.
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56
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Morimoto K, Ohnishi Y, Koseki D, Nakamura A, Dohi T, Kita Y. Stabilized pyrrolyl iodonium salts and metal-free oxidative cross-coupling. Org Biomol Chem 2018; 14:8947-8951. [PMID: 27722732 DOI: 10.1039/c6ob01764a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Pyrrole-aryl derivatives are important due to their unique biological activities in medicinal chemistry. We now report a new oxidative biaryl coupling for pyrroles and indoles toward various arenes using a hypervalent iodine reagent and an appropriate stabilizer for pyrrolyl iodonium intermediates. The reactions readily provide a variety of desired coupling products in good yields.
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Affiliation(s)
- Koji Morimoto
- Ritsumeikan University, College of Pharmaceutical Sciences, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Yusuke Ohnishi
- Ritsumeikan University, College of Pharmaceutical Sciences, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Daichi Koseki
- Ritsumeikan University, College of Pharmaceutical Sciences, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Akira Nakamura
- Ritsumeikan University, Research Organization of Science and Technology, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan.
| | - Toshifumi Dohi
- Ritsumeikan University, College of Pharmaceutical Sciences, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan
| | - Yasuyuki Kita
- Ritsumeikan University, Research Organization of Science and Technology, 1-1-1 Nojihigashi, Kusatsu, Shiga 525-8577, Japan.
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57
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Affiliation(s)
- Guobing Yan
- Department of Chemistry; Lishui University; Lishui Zhejiang 323000 People's Republic of China
| | - Yan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 People's Republic of China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education; College of Chemistry; Peking University; Beijing 100871 People's Republic of China
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58
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Ma X, Farndon JJ, Young TA, Fey N, Bower JF. A Simple and Broadly Applicable C-N Bond Forming Dearomatization Protocol Enabled by Bifunctional Amino Reagents. Angew Chem Int Ed Engl 2017; 56:14531-14535. [PMID: 28925055 PMCID: PMC5698738 DOI: 10.1002/anie.201708176] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Indexed: 12/17/2022]
Abstract
A C-N bond forming dearomatization protocol with broad scope is outlined. Specifically, bifunctional amino reagents are used for sequential nucleophilic and electrophilic C-N bond formations, with the latter effecting the key dearomatization step. Using this approach, γ-arylated alcohols are converted to a wide range of differentially protected spirocyclic pyrrolidines in just two or three steps.
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Affiliation(s)
- Xiaofeng Ma
- School of ChemistryUniversity of BristolBristolBS8 1TSUK
| | | | - Tom A. Young
- School of ChemistryUniversity of BristolBristolBS8 1TSUK
| | - Natalie Fey
- School of ChemistryUniversity of BristolBristolBS8 1TSUK
| | - John F. Bower
- School of ChemistryUniversity of BristolBristolBS8 1TSUK
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59
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Ma X, Farndon JJ, Young TA, Fey N, Bower JF. A Simple and Broadly Applicable C−N Bond Forming Dearomatization Protocol Enabled by Bifunctional Amino Reagents. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708176] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Xiaofeng Ma
- School of Chemistry; University of Bristol; Bristol BS8 1TS UK
| | | | - Tom A. Young
- School of Chemistry; University of Bristol; Bristol BS8 1TS UK
| | - Natalie Fey
- School of Chemistry; University of Bristol; Bristol BS8 1TS UK
| | - John F. Bower
- School of Chemistry; University of Bristol; Bristol BS8 1TS UK
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60
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Liu Z, Liu ZQ. An Intermolecular Azidoheteroarylation of Simple Alkenes via Free-Radical Multicomponent Cascade Reactions. Org Lett 2017; 19:5649-5652. [DOI: 10.1021/acs.orglett.7b02788] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zhi Liu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Zhong-Quan Liu
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
- State
Key Laboratory Cultivation Base for TCM Quality and Efficacy, College
of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
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61
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Vasu D, Hausmann JN, Saito H, Yanagi T, Yorimitsu H, Osuka A. Robust Palladium‐Catalyzed Arylation of Catalyst‐Poisoning
ortho
‐Sulfanyl Aryl Halides with Tetraarylborates and Its Application to Synthesis of π‐Extended Dibenzothiophenes. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700323] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Dhananjayan Vasu
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Jan Niklas Hausmann
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Hayate Saito
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Tomoyuki Yanagi
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
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62
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Trofimov BA, Sagitova EF, Petrova OV, Sobenina LN, Ushakov IA, Vashchenko AV. Efficient switching from the 2,3′- to 2,2′-bipyrrole scaffold via the recyclization of 1-(benzoylmethylanilino)-3-imino-3 H -2-cyanopyrrolizines: Crucial effect of the DBU organic superbase. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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63
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Ieawsuwan W, Ruchirawat S. PIFA-BF 3·OEt 2 mediated intramolecular regioselective domino cyclization of ynamides: A novel method for the synthesis of tetrahydroisoquinoline-oxazol-2(3H)-ones. Bioorg Med Chem 2017; 25:2856-2867. [PMID: 28351608 DOI: 10.1016/j.bmc.2017.03.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 03/09/2017] [Accepted: 03/17/2017] [Indexed: 10/19/2022]
Abstract
The transition metal-free intramolecular regioselective domino cyclization of N-Boc protected ynamides has been developed to provide the corresponding tetrahydroisoquinoline-oxazo-2(3H)-ones in moderate to good yields.
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Affiliation(s)
- Winai Ieawsuwan
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok 10210, Thailand.
| | - Somsak Ruchirawat
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok 10210, Thailand; Chemical Biology Program, Chulabhorn Graduate Institute, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok 10210, Thailand; Center of Excellence on Environmental Health and Toxicology (EHT), Ministry of Education, 54 Kamphaeng Phet 6 Road, Laksi, Bangkok 10210, Thailand
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64
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Tian G, Fedoseev P, Van der Eycken EV. Hypervalent Iodine(III)-Mediated Cascade Cyclization of Propargylguanidines and Total Syntheses of Kealiinine B and C. Chemistry 2017; 23:5224-5227. [DOI: 10.1002/chem.201700934] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Guilong Tian
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC); University of Leuven (KU Leuven), Celestijnenlaan 200F; 3001 Leuven Belgium
| | - Pavel Fedoseev
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC); University of Leuven (KU Leuven), Celestijnenlaan 200F; 3001 Leuven Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC); University of Leuven (KU Leuven), Celestijnenlaan 200F; 3001 Leuven Belgium
- Peoples Friendship University of Russia (RUDN University); 6 Miklukho-Maklaya street Moscow 117198 Russia
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65
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Ohura A, Itoh T, Ishida H, Saito A, Yamamoto K. Three-Component Regioselective Synthesis of Tetrahydrofuro[2,3-d]oxazoles and Their Efficient Conversion to Oxazoles. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700074] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Arisa Ohura
- Laboratory of Drug Design and Medicinal Chemistry; Showa Pharmaceutical University; 3-3165 Higashi-Tamagawagakuen, Machida Tokyo 194-8543 Japan
| | - Toshimasa Itoh
- Laboratory of Drug Design and Medicinal Chemistry; Showa Pharmaceutical University; 3-3165 Higashi-Tamagawagakuen, Machida Tokyo 194-8543 Japan
| | - Hiroaki Ishida
- Laboratory of Drug Design and Medicinal Chemistry; Showa Pharmaceutical University; 3-3165 Higashi-Tamagawagakuen, Machida Tokyo 194-8543 Japan
| | - Akio Saito
- Division of Applied Chemistry, Institute of Engineering; Tokyo University of Agriculture and Technology; 2-24-16 Naka-cho, Koganei Tokyo 184-8588 Japan
| | - Keiko Yamamoto
- Laboratory of Drug Design and Medicinal Chemistry; Showa Pharmaceutical University; 3-3165 Higashi-Tamagawagakuen, Machida Tokyo 194-8543 Japan
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66
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Affiliation(s)
- Yan Qin
- Key
Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lihui Zhu
- Key
Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sanzhong Luo
- Key
Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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67
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Wang Y, Wang Y, Zhang Q, Li D. Site-selective oxidative C–H sulfonylation of 8-acylaminoquinolines and anilides under metal-free conditions. Org Chem Front 2017. [DOI: 10.1039/c6qo00730a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly site-selective oxidative C–H sulfonylation method for 8-acylaminoquinolines and anilides with sulfonyl chlorides has been developed, which provided C5-sulfonylated quinolines and para-sulfonylated anilides respectively.
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Affiliation(s)
- Yang Wang
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
- Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy
| | - Ying Wang
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
- Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy
| | - Qian Zhang
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
- Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy
| | - Dong Li
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
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68
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Deruer E, Canesi S. One-step formation of dihydrofuranoindoline cores promoted by a hypervalent iodine reagent. Org Biomol Chem 2017; 15:3736-3741. [DOI: 10.1039/c7ob00326a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of aniline derivatives in the presence of a hypervalent iodine reagent and furan produces dihydrofuranoindoline cores in one step.
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Affiliation(s)
- Elsa Deruer
- Laboratoire de Méthodologie et Synthèse de Produits Naturels
- Université du Québec à Montréal
- Montréal
- Canada
| | - Sylvain Canesi
- Laboratoire de Méthodologie et Synthèse de Produits Naturels
- Université du Québec à Montréal
- Montréal
- Canada
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69
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Xu P, Wang F, Fan G, Xu X, Tang P. Hypervalent Iodine(III)-Mediated Oxidative Fluorination of Alkylsilanes by Fluoride Ions. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609741] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Peng Xu
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
| | - Feng Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
| | - Guilan Fan
- Department of Chemistry; Nankai University; Tianjin 300071 China
| | - Xiufang Xu
- Department of Chemistry; Nankai University; Tianjin 300071 China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
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70
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Xu P, Wang F, Fan G, Xu X, Tang P. Hypervalent Iodine(III)-Mediated Oxidative Fluorination of Alkylsilanes by Fluoride Ions. Angew Chem Int Ed Engl 2016; 56:1101-1104. [DOI: 10.1002/anie.201609741] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 11/06/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Peng Xu
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
| | - Feng Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
| | - Guilan Fan
- Department of Chemistry; Nankai University; Tianjin 300071 China
| | - Xiufang Xu
- Department of Chemistry; Nankai University; Tianjin 300071 China
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
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71
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Affiliation(s)
- Gonzalo Anguera
- Grup d’Enginyeria
de Materials, Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain
| | - David Sánchez-García
- Grup d’Enginyeria
de Materials, Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain
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72
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Sakamoto R, Inada T, Selvakumar S, Moteki SA, Maruoka K. Efficient photolytic C-H bond functionalization of alkylbenzene with hypervalent iodine(iii) reagent. Chem Commun (Camb) 2016; 52:3758-61. [PMID: 26686276 DOI: 10.1039/c5cc07647a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A practical approach to radical C-H bond functionalization by the photolysis of a hypervalent iodine(iii) reagent is presented. The photolysis of [bis(trifluoroacetoxy)iodo]benzene (PIFA) leads to the generation of trifluoroacetoxy radicals, which allows the smooth transformation of various alkylbenzenes to the corresponding benzyl ester compounds under mild reaction conditions.
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Affiliation(s)
- Ryu Sakamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
| | - Tsubasa Inada
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
| | - Sermadurai Selvakumar
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
| | - Shin A Moteki
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
| | - Keiji Maruoka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
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73
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Grigalunas M, Wiest O, Helquist P. Single-Flask Multicomponent Synthesis of Highly Substituted α-Pyrones via a Sequential Enolate Arylation and Alkenylation Strategy. Org Lett 2016; 18:5724-5727. [PMID: 27768319 DOI: 10.1021/acs.orglett.6b02969] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Trisubstituted α-pyrones are obtained by a Pd-catalyzed three-component, single-flask operation via an α-arylation, subsequent α-alkenylation, alkene isomerization, and dienolate lactonization. A variety of coupling components under mild conditions afforded isolated yields of up to 93% of the pyrones with complete control of regioselectivity. Metal dependence was noted for three of the steps of the pathway. Utility of the pyrone products was demonstrated by further transformations providing convenient access to polyaromatic compounds, exhibiting broad molecular diversity.
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Affiliation(s)
- Michael Grigalunas
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46566, United States
| | - Olaf Wiest
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46566, United States.,Lab of Computational Chemistry and Drug Design, School of Chemical Biology and Biotechnology, Peking University, Shenzhen Graduate School , Shenzhen 518055, China
| | - Paul Helquist
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46566, United States
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74
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Wang Y, Wang Y, Guo Z, Zhang Q, Li D. Metal-Free Oxidative C−H Amination of 8-Acylaminoquinolines and Anilides with N
-Fluorobenzenesulfonimide. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600389] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yang Wang
- Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy; Hubei University of Technology; Wuhan 430068 China
- School of Materials and Chemical Engineering; Hubei University of Technology; Wuhan 430068 China
| | - Ying Wang
- Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy; Hubei University of Technology; Wuhan 430068 China
- School of Materials and Chemical Engineering; Hubei University of Technology; Wuhan 430068 China
| | - Zhenyu Guo
- Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy; Hubei University of Technology; Wuhan 430068 China
- School of Materials and Chemical Engineering; Hubei University of Technology; Wuhan 430068 China
| | - Qian Zhang
- Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy; Hubei University of Technology; Wuhan 430068 China
- School of Materials and Chemical Engineering; Hubei University of Technology; Wuhan 430068 China
| | - Dong Li
- School of Materials and Chemical Engineering; Hubei University of Technology; Wuhan 430068 China
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75
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Izquierdo S, Essafi S, Del Rosal I, Vidossich P, Pleixats R, Vallribera A, Ujaque G, Lledós A, Shafir A. Acid Activation in Phenyliodine Dicarboxylates: Direct Observation, Structures, and Implications. J Am Chem Soc 2016; 138:12747-12750. [PMID: 27606591 DOI: 10.1021/jacs.6b07999] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The use of the hypervalent iodine reagents in oxidative processes has become a staple in modern organic synthesis. Frequently, the reactivity of λ3 iodanes is further enhanced by acids (Lewis or Brønsted). The origin of such activation, however, has remained elusive. Here, we use the common combination of PhI(OAc)2 with BF3·Et2O as a model to fully explore this activation phenomenon. In addition to the spectroscopic assessment of the dynamic acid-base interaction, for the first time the putative PIDA·BF3 complex has been isolated and its structure determined by X-ray diffraction. Consequences of such activation are discussed from a structural and electronic (DFT) points of views, including the origins of the enhanced reactivity.
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Affiliation(s)
- Susana Izquierdo
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology , 43007, Tarragona, Spain
| | - Stéphanie Essafi
- Departament de Química and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Iker Del Rosal
- Departament de Química and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Pietro Vidossich
- Departament de Química and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Roser Pleixats
- Departament de Química and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Adelina Vallribera
- Departament de Química and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Gregori Ujaque
- Departament de Química and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Agustí Lledós
- Departament de Química and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Autònoma de Barcelona , 08193 Cerdanyola del Vallès, Spain
| | - Alexandr Shafir
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology , 43007, Tarragona, Spain
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76
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Morimoto K, Nakamura A, Dohi T, Kita Y. Metal-Free Oxidative Cross-Coupling Reaction of Thiophene Iodonium Salts with Pyrroles. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600791] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Koji Morimoto
- Ritsumeikan University; College of Pharmaceutical Sciences; 1-1-1 Nojihigashi, Kusatsu 525-8577 Shiga Japan
| | - Akira Nakamura
- Ritsumeikan University; Research Organization of Science and Technology; 1-1-1 Nojihigashi, Kusatsu 525-8577 Shiga Japan
| | - Toshifumi Dohi
- Ritsumeikan University; College of Pharmaceutical Sciences; 1-1-1 Nojihigashi, Kusatsu 525-8577 Shiga Japan
| | - Yasuyuki Kita
- Ritsumeikan University; College of Pharmaceutical Sciences; 1-1-1 Nojihigashi, Kusatsu 525-8577 Shiga Japan
- Ritsumeikan University; Research Organization of Science and Technology; 1-1-1 Nojihigashi, Kusatsu 525-8577 Shiga Japan
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77
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Coulibali S, Godou T, Canesi S. Use of the Nosyl Group as a Functional Protecting Group in Applications of a Michael/Smiles Tandem Process. Org Lett 2016; 18:4348-51. [DOI: 10.1021/acs.orglett.6b02105] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Siomenan Coulibali
- Laboratoire de Méthodologie
et Synthèse de Produits Naturels, Université du Québec à Montréal, C.P. 8888, Succ. Centre-Ville, Montréal, H3C 3P8, Québec, Canada
| | - Timothé Godou
- Laboratoire de Méthodologie
et Synthèse de Produits Naturels, Université du Québec à Montréal, C.P. 8888, Succ. Centre-Ville, Montréal, H3C 3P8, Québec, Canada
| | - Sylvain Canesi
- Laboratoire de Méthodologie
et Synthèse de Produits Naturels, Université du Québec à Montréal, C.P. 8888, Succ. Centre-Ville, Montréal, H3C 3P8, Québec, Canada
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78
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Synthesis of functionalized 2,2′- and 2,3′-bipyrroles via 3-imino-3H-pyrrolizine-2-carbonitriles. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.07.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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79
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Taneja N, Peddinti RK. Iodobenzene and m-chloroperbenzoic acid mediated oxidative dearomatization of phenols. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.07.078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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80
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Maertens G, Desjardins S, Canesi S. Asymmetric synthesis of (+)-17-epi-methoxy-kauran-3-one through tandem oxidative polycyclization-pinacol process. Org Biomol Chem 2016; 14:6744-50. [PMID: 27327903 DOI: 10.1039/c6ob01142j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A synthesis of (+)-17-epi-methoxy-kauran-3-one, an O-methylated isomer of the natural diterpene 17-hydroxy-kauran-3-one, has been achieved. The strategy is based on a diastereoselective oxidative polycyclization-pinacol tandem process consisting of transforming a functionalized phenol into a compact and complex tetracycle, which represents the main core of kaurane family members. The synthesis also includes an enantioselective Yamamoto's allylation, a diastereoselective Ru-catalyzed hydrocyanation, a ring-closing metathesis and a reductive isomerization process as key steps. The structure of our synthetic substrate was determined through comparison with an O-methylated derivative of the natural compound.
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Affiliation(s)
- Gaëtan Maertens
- Laboratoire de Méthodologie et Synthèse de Produits Naturels, Université du Québec à Montréal, C.P. 8888, Succ. Centre-Ville, Montréal, H3C 3P8, Québec, Canada.
| | - Samuel Desjardins
- Laboratoire de Méthodologie et Synthèse de Produits Naturels, Université du Québec à Montréal, C.P. 8888, Succ. Centre-Ville, Montréal, H3C 3P8, Québec, Canada.
| | - Sylvain Canesi
- Laboratoire de Méthodologie et Synthèse de Produits Naturels, Université du Québec à Montréal, C.P. 8888, Succ. Centre-Ville, Montréal, H3C 3P8, Québec, Canada.
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81
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Colomer I, Batchelor-McAuley C, Odell B, Donohoe TJ, Compton RG. Hydrogen Bonding to Hexafluoroisopropanol Controls the Oxidative Strength of Hypervalent Iodine Reagents. J Am Chem Soc 2016; 138:8855-61. [DOI: 10.1021/jacs.6b04057] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ignacio Colomer
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Christopher Batchelor-McAuley
- Department
of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
| | - Barbara Odell
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Timothy J. Donohoe
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Richard G. Compton
- Department
of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, United Kingdom
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82
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Kazakova AN, Nenajdenko CG, Vasilyev AV. Oxidative dimerization of 2-chloro-3,3,3-trifluoro- 1-(4-methoxyphenyl)propene in the system PbO2–CF3SO3H. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2016. [DOI: 10.1134/s1070428016040230] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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83
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Maertens G, Canesi S. Synthesis of theStrychnosAlkaloid (−)-Strychnopivotine and Confirmation of its Absolute Configuration. Chemistry 2016; 22:7090-3. [DOI: 10.1002/chem.201601319] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Gaëtan Maertens
- Laboratoire de Méthodologie et Synthèse de; Produit Naturels; Université du Québec à Montréal, C.P.8888, Succ. Centre-Ville; Montréal H3C 3P8 Québec Canada
| | - Sylvain Canesi
- Laboratoire de Méthodologie et Synthèse de; Produit Naturels; Université du Québec à Montréal, C.P.8888, Succ. Centre-Ville; Montréal H3C 3P8 Québec Canada
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84
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Sun X, Yao X, Zhang C, Rao Y. Pd(II) catalyzed ortho C-H iodination of phenylcarbamates at room temperature using cyclic hypervalent iodine reagents. Chem Commun (Camb) 2016; 51:10014-7. [PMID: 26001095 DOI: 10.1039/c5cc02533h] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel approach to access ortho iodinated phenols using cyclic hypervalent iodine reagents through palladium(II) catalyzed C-H activation has been developed through weak coordination. The reaction showed excellent regioselectivity, reactivity and good functional group tolerance. A unique mechanism was proposed.
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Affiliation(s)
- Xiuyun Sun
- MOE Key Laboratory of Protein Sciences, Department of Pharmacology and Pharmaceutical Sciences, School of Medicine and School of Life Sciences, Tsinghua University, Beijing 100084, China.
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85
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Abstract
The preparation, structure, and chemistry of hypervalent iodine compounds are reviewed with emphasis on their synthetic application. Compounds of iodine possess reactivity similar to that of transition metals, but have the advantage of environmental sustainability and efficient utilization of natural resources. These compounds are widely used in organic synthesis as selective oxidants and environmentally friendly reagents. Synthetic uses of hypervalent iodine reagents in halogenation reactions, various oxidations, rearrangements, aminations, C-C bond-forming reactions, and transition metal-catalyzed reactions are summarized and discussed. Recent discovery of hypervalent catalytic systems and recyclable reagents, and the development of new enantioselective reactions using chiral hypervalent iodine compounds represent a particularly important achievement in the field of hypervalent iodine chemistry. One of the goals of this Review is to attract the attention of the scientific community as to the benefits of using hypervalent iodine compounds as an environmentally sustainable alternative to heavy metals.
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Affiliation(s)
- Akira Yoshimura
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
| | - Viktor V Zhdankin
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
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86
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Hypervalent Iodine-Induced Oxidative Couplings (New Metal-Free Coupling Advances and Their Applications in Natural Product Syntheses). HYPERVALENT IODINE CHEMISTRY 2016; 373:1-23. [DOI: 10.1007/128_2016_667] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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87
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Nakamura K, Yasuda N, Maeda H. Dimension-controlled assemblies of modified bipyrroles stabilized by electron-withdrawing moieties. Chem Commun (Camb) 2016; 52:7157-60. [DOI: 10.1039/c6cc03423c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Benzoyl-substituted bipyrroles possessing aliphatic chains were synthesized and formed a variety of dimension-controlled assembled structures as mesophases using various intermolecular interactions.
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Affiliation(s)
- Kazuto Nakamura
- Department of Applied Chemistry
- College of Life Sciences
- Ritsumeikan University
- Kusatsu 525–8577
- Japan
| | - Nobuhiro Yasuda
- Research and Utilization Division
- Japan Synchrotron Radiation Research Institute
- Sayo 679–5198
- Japan
| | - Hiromitsu Maeda
- Department of Applied Chemistry
- College of Life Sciences
- Ritsumeikan University
- Kusatsu 525–8577
- Japan
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88
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Guérard KC, Hamel V, Guérinot A, Bouchard-Aubin C, Canesi S. Formation of the Main Cores Present in Natural Products by Tandem Additions. Chemistry 2015; 21:18068-71. [PMID: 26455585 DOI: 10.1002/chem.201502920] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Indexed: 11/12/2022]
Abstract
A rapid route to 5,5- and 5,6- bicyclic systems is provided by an 1,3-alkyl-shift process mediated by a hypervalent iodine reagent on aromatics. The structures obtained contain several unsaturations with different behaviors and reactivities. Such diversity allows further elaborations for the rapid formation of compact systems present in a variety of natural products. The potential for further transformations has been demonstrated by performing a double Michael addition. This cyclization process is regio- and stereoselective due to the presence of a former benzylic substituent. Furthermore, an extension of this approach has been accomplished on indole derivatives.
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Affiliation(s)
- Kimiaka C Guérard
- Département de chimie, Université du Québec à Montréal, Laboratoire de Méthodologie et Synthèse de Produits Naturels, C.P.8888, Succ. Centre-Ville, Montréal, H3C 3P8, Québec (Canada)
| | - Vincent Hamel
- Département de chimie, Université du Québec à Montréal, Laboratoire de Méthodologie et Synthèse de Produits Naturels, C.P.8888, Succ. Centre-Ville, Montréal, H3C 3P8, Québec (Canada)
| | - Amandine Guérinot
- Département de chimie, Université du Québec à Montréal, Laboratoire de Méthodologie et Synthèse de Produits Naturels, C.P.8888, Succ. Centre-Ville, Montréal, H3C 3P8, Québec (Canada)
| | - Cloé Bouchard-Aubin
- Département de chimie, Université du Québec à Montréal, Laboratoire de Méthodologie et Synthèse de Produits Naturels, C.P.8888, Succ. Centre-Ville, Montréal, H3C 3P8, Québec (Canada)
| | - Sylvain Canesi
- Département de chimie, Université du Québec à Montréal, Laboratoire de Méthodologie et Synthèse de Produits Naturels, C.P.8888, Succ. Centre-Ville, Montréal, H3C 3P8, Québec (Canada).
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89
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Manna S, Serebrennikova PO, Utepova IA, Antonchick AP, Chupakhin ON. Hypervalent Iodine(III) in Direct Oxidative Amination of Arenes with Heteroaromatic Amines. Org Lett 2015; 17:4588-91. [DOI: 10.1021/acs.orglett.5b02320] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Srimanta Manna
- Chemische
Biologie, Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn-Straße 11, 44227 Dortmund, Germany
- Fakultät
Chemie und Chemische Biologie, Technische Universität Dortmund, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Polina O. Serebrennikova
- Chemische
Biologie, Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn-Straße 11, 44227 Dortmund, Germany
- Ural Federal University, 19 Mira Straße, 620002 Ekaterinburg, Russian Federation
| | - Irina A. Utepova
- Ural Federal University, 19 Mira Straße, 620002 Ekaterinburg, Russian Federation
| | - Andrey P. Antonchick
- Chemische
Biologie, Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn-Straße 11, 44227 Dortmund, Germany
- Fakultät
Chemie und Chemische Biologie, Technische Universität Dortmund, Otto-Hahn-Straße 6, 44227 Dortmund, Germany
| | - Oleg N. Chupakhin
- Ural Federal University, 19 Mira Straße, 620002 Ekaterinburg, Russian Federation
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90
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Narayan R, Matcha K, Antonchick AP. Metal-Free Oxidative C-C Bond Formation through C-H Bond Functionalization. Chemistry 2015; 21:14678-93. [PMID: 26239615 DOI: 10.1002/chem.201502005] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The formation of C-C bonds embodies the core of organic chemistry because of its fundamental application in generation of molecular diversity and complexity. C-C bond-forming reactions are well-known challenges. To achieve this goal through direct functionalization of C-H bonds in both of the coupling partners represents the state-of-the-art in organic synthesis. Oxidative C-C bond formation obviates the need for prefunctionalization of both substrates. This Minireview is dedicated to the field of C-C bond-forming reactions through direct C-H bond functionalization under completely metal-free oxidative conditions. Selected important developments in this area have been summarized with representative examples and discussions on their reaction mechanisms.
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Affiliation(s)
- Rishikesh Narayan
- Abteilung Chemische Biologie, Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn Strasse 11, 44227 Dortmund (Germany)
| | - Kiran Matcha
- Abteilung Chemische Biologie, Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn Strasse 11, 44227 Dortmund (Germany).,Present Address: API Small Molecule Process Research and Development, Janssen Pharmaceutica NV, Turnhotsweg 30, 2340 Beerse (Belgium)
| | - Andrey P Antonchick
- Abteilung Chemische Biologie, Max-Planck-Institut für Molekulare Physiologie, Otto-Hahn Strasse 11, 44227 Dortmund (Germany). .,Fakultät Chemie und Chemische Biologie, Technische Universität Dortmund, Otto-Hahn Strasse 6, 44221 Dortmund (Germany).
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91
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Kita Y, Dohi T. Pioneering Metal-Free Oxidative Coupling Strategy of Aromatic Compounds Using Hypervalent Iodine Reagents. CHEM REC 2015. [DOI: 10.1002/tcr.201500020] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yasuyuki Kita
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu Shiga 525-8577 Japan
| | - Toshifumi Dohi
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu Shiga 525-8577 Japan
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92
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Kloeckner U, Nachtsheim BJ. Mild hypervalent iodine mediated oxidative nitration of N-aryl sulfonamides. Chem Commun (Camb) 2015; 50:10485-7. [PMID: 25068377 DOI: 10.1039/c4cc04738a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
An oxidative and acid-free method for the nitration of N-aryl sulfonamides has been developed using a combination of sodium nitrite as cheap and easy to handle NO2-source and the hypervalent iodine reagent PIFA as stoichiometric oxidant. Under very mild reaction conditions, the desired mononitrated aryl sulfonamides were isolated in up to 87% yield. This is the first example of an iodane-mediated oxidative nitration.
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Affiliation(s)
- Ulrich Kloeckner
- Institute of Organic Chemistry, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany.
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93
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Tinnis F, Stridfeldt E, Lundberg H, Adolfsson H, Olofsson B. Metal-free N-arylation of secondary amides at room temperature. Org Lett 2015; 17:2688-91. [PMID: 25966029 DOI: 10.1021/acs.orglett.5b01079] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The arylation of secondary acyclic amides has been achieved with diaryliodonium salts under mild and metal-free conditions. The methodology has a wide scope, allows synthesis of tertiary amides with highly congested aryl moieties, and avoids the regioselectivity problems observed in reactions with (diacetoxyiodo)benzene.
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Affiliation(s)
- Fredrik Tinnis
- †Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Elin Stridfeldt
- †Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Helena Lundberg
- †Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Hans Adolfsson
- †Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Berit Olofsson
- †Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden.,‡Stellenbosch Institute for Advanced Study (STIAS), Wallenberg Research Centre at Stellenbosch University, Marais Street, Stellenbosch 7600, South Africa
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94
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Jacquemot G, Maertens G, Canesi S. Isostrychnine Synthesis Mediated by Hypervalent Iodine Reagent. Chemistry 2015; 21:7713-5. [DOI: 10.1002/chem.201500185] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Indexed: 12/24/2022]
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95
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Zhu M, Zhao Y. A convenient catalytic oxidative 1,2-shift of arylalkenes for preparation of α-aryl ketones mediated by NaI. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2014.11.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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96
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Seven-membered rings through metal-free rearrangement mediated by hypervalent iodine. Molecules 2015; 20:1475-94. [PMID: 25599151 PMCID: PMC6272645 DOI: 10.3390/molecules20011475] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 01/08/2015] [Indexed: 11/16/2022] Open
Abstract
A versatile and metal-free approach for the synthesis of carbocycles and of heterocycles bearing seven- and eight-membered rings is described. The strategy is based on ring expansion of 1-vinylcycloalkanols (or the corresponding silyl or methyl ether) mediated by the hypervalent iodine reagent HTIB (PhI(OH)OTs). Reaction conditions can be easily adjusted to give ring expansion products bearing different functional groups. A route to medium-ring lactones was also developed.
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97
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Maertens G, L'Homme C, Canesi S. Total synthesis of natural products using hypervalent iodine reagents. Front Chem 2015; 2:115. [PMID: 25601909 PMCID: PMC4283662 DOI: 10.3389/fchem.2014.00115] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 12/10/2014] [Indexed: 12/16/2022] Open
Abstract
We present a review of natural product syntheses accomplished in our laboratory during the last 5 years. Each synthetic route features a phenol dearomatization promoted by an environmentally benign hypervalent iodine reagent. The dearomatizations demonstrate the "aromatic ring umpolung" concept, and involve stereoselective remodeling of the inert unsaturations of a phenol into a highly functionalized key intermediate that may contain a quaternary carbon center and a prochiral dienone system. Several new oxidative strategies were employed, including transpositions (1,3-alkyl shift and Prins-pinacol), a polycyclization, an ipso rearrangement, and direct nucleophilic additions at the phenol para position. Several alkaloids, heterocyclic compounds, and a polycyclic core have been achieved, including sceletenone (a serotonin reuptake inhibitor), acetylaspidoalbidine (an antitumor agent), fortucine (antiviral and antitumor), erysotramidine (curare-like effect), platensimycin (an antibiotic), and the main core of a kaurane diterpene (immunosuppressive agent and stimulator of apoptosis). These concise and in some cases enantioselective syntheses effectively demonstrate the importance of hypervalent iodine reagents in the total synthesis of bioactive natural products.
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Affiliation(s)
| | | | - Sylvain Canesi
- Laboratoire de Méthodologie et Synthèse de Produits Naturels, Département de Chimie, Université du Québec à MontréalMontréal, QC, Canada
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98
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Li P, Zhao J, Xia C, Li F. The development of carbene-stabilized N–O radical coupling strategy in metal-free regioselective C–H azidation of quinoline N-oxides. Org Chem Front 2015. [DOI: 10.1039/c5qo00204d] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The key regioselective issue of quinoline N-oxide azidation was resolved via the oxidative cross-coupling of carbene-stabilized N–O radicals and TMSN3. Compared with the reported azidations, the present metal-free procedure is convenient and regioselective under mild conditions, and could be scaled up to gram-synthesis.
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Affiliation(s)
- Pan Li
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Jingjing Zhao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Chungu Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Fuwei Li
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
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99
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Chen YA, Liu CY. Convenient synthesis of organic-electronics-oriented building blocks via on-water and under-air homocoupling of (hetero)aryl iodides. RSC Adv 2015. [DOI: 10.1039/c5ra13517f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
An on-water homocoupling reaction is developed for the alternative synthesis of various organic-electronically versatile bi(hetero)aryls. These multi-function building blocks are indispensable to polymer chemistry and modern organic electronics.
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Affiliation(s)
- Yi-An Chen
- Department of Chemical and Materials Engineering
- National Central University
- Taoyuan
- Republic of China
| | - Ching-Yuan Liu
- Department of Chemical and Materials Engineering
- National Central University
- Taoyuan
- Republic of China
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100
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Kita Y, Dohi T, Nakae T, Toyoda Y, Koseki D, Kubo H, Kamitanaka T. Phenol and Aniline Oxidative Coupling with Alkenes by Using Hypervalent Iodine Dimer for the Rapid Access to Dihydrobenzofurans and Indolines. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)14] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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