1
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Bugaenko DI, Malashchenko NA, Kopytov SO, Lukonina NS, Karchava AV. (Indol-3-yl)(DMIX)Iodonium Salts: Novel Electrophilic Indole Reagents. Org Lett 2024; 26:3189-3194. [PMID: 38587312 DOI: 10.1021/acs.orglett.4c00797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
A new umpolung approach to the C3-H functionalization of indoles with diverse nucleophiles based on the intermediate formation of I(III) reagents is described. The 3,5-dimethylisoxazol-4-yl auxiliary allows for selective indole transfer under catalyst-free conditions, which was impossible using previously reported reagents. Combining the mildness of transition-metal-free conditions and the high reactivity of hypervalent iodine reagents, this protocol tolerates various functional groups and provides access to indoles that are difficult to prepare conventionally.
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Affiliation(s)
- Dmitry I Bugaenko
- Department of Chemistry, Moscow State University, Moscow 119991, Russia
| | | | - Sergei O Kopytov
- Department of Chemistry, Moscow State University, Moscow 119991, Russia
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2
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Roy S, Panja S, Sahoo SR, Chatterjee S, Maiti D. Enroute sustainability: metal free C-H bond functionalisation. Chem Soc Rev 2023; 52:2391-2479. [PMID: 36924227 DOI: 10.1039/d0cs01466d] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
The term "C-H functionalisation" incorporates C-H activation followed by its transformation. In a single line, this can be defined as the conversion of carbon-hydrogen bonds into carbon-carbon or carbon-heteroatom bonds. The catalytic functionalisation of C-H bonds using transition metals has emerged as an atom-economical technique to engender new bonds without activated precursors which can be considered as a major drawback while attempting large-scale synthesis. Replacing the transition-metal-catalysed approach with a metal-free strategy significantly offers an alternative route that is not only inexpensive but also environmentally benign to functionalize C-H bonds. Recently metal free synthetic approaches have been flourishing to functionalize C-H bonds, motivated by the search for greener, cost-effective, and non-toxic catalysts. In this review, we will highlight the comprehensive and up-to-date discussion on recent examples of ground-breaking research on green and sustainable metal-free C-H bond functionalisation.
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Affiliation(s)
- Sayan Roy
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Subir Panja
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Sumeet Ranjan Sahoo
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Sagnik Chatterjee
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India. .,Department of Interdisciplinary Program in Climate Studies, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
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3
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Rossolini T, Das A, Nicolai S, Waser J. Pd(II)-Catalyzed Aminoacetoxylation of Alkenes Via Tether Formation. Org Lett 2022; 24:5068-5072. [PMID: 35816449 PMCID: PMC9490825 DOI: 10.1021/acs.orglett.2c01838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
A Pd-catalyzed method based on the use of a molecular
tether is
described for olefin difunctionalization. Enabled by an easily introduced
trifluoroacetaldehyde-derived tether, a simultaneous introduction
of oxygen and nitrogen heteroatoms across unsaturated carbon–carbon
bonds was achieved under oxidative conditions, most probably via high-valent
Pd intermediates. Good yields and high diastereoselectivity were obtained
with aryl-substituted alkenes, whereas nonterminal alkyl-substituted
olefins gave aza-Heck products. Tether cleavage under mild conditions
provided fast access to functionalized β-amino alcohols.
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Affiliation(s)
- Thomas Rossolini
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, EPFL, 1015 Lausanne, Switzerland
| | - Ashis Das
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, EPFL, 1015 Lausanne, Switzerland
| | - Stefano Nicolai
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, EPFL, 1015 Lausanne, Switzerland
| | - Jérôme Waser
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, EPFL, 1015 Lausanne, Switzerland
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4
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Kikushima K, Elboray EE, Jimenez-Halla JOC, Solorio-Alvarado CR, Dohi T. Diaryliodonium(III) Salts in One-Pot Double Functionalization of C–IIII and ortho C–H Bonds. Org Biomol Chem 2022; 20:3231-3248. [DOI: 10.1039/d1ob02501e] [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
Since the 1950s, diaryliodonium(III) salts have been demonstrated to participate in various arylation reactions, forming aryl–heteroatom and aryl–carbon bonds. Incorporating the arylation step into sequential transformations would provide access to...
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5
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Dohi T, Kikushima K, Matsuki K, Yoneda Y, Menjo T, Kaneko K, Hanasaki T. Polyfluoroarene-Capped Thiophene Derivatives via Fluoride-Catalyzed Nucleophilic Aromatic Substitution. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)54] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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6
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Waser J, Kumar Nandi R, Pal P. Umpolung of Electron-Rich Heteroarenes with Hypervalent Iodine Reagents. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)33] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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7
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Batra A, Singh KN. Recent Developments in Transition Metal‐Free Cross‐Dehydrogenative Coupling Reactions for C–C Bond Formation. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000785] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Aanchal Batra
- PG Department of Chemistry Mehr Chand Mahajan DAV College for Women Sec 36/A 160036 Chandigarh India
| | - Kamal Nain Singh
- Department of Chemistry and Centre of Advanced studies in Chemistry Panjab University 160014 Chandigarh India
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8
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Miliutina E, Guselnikova O, Soldatova NS, Bainova P, Elashnikov R, Fitl P, Kurten T, Yusubov MS, Švorčík V, Valiev RR, Chehimi MM, Lyutakov O, Postnikov PS. Can Plasmon Change Reaction Path? Decomposition of Unsymmetrical Iodonium Salts as an Organic Probe. J Phys Chem Lett 2020; 11:5770-5776. [PMID: 32603124 DOI: 10.1021/acs.jpclett.0c01350] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Plasmon-assisted transformations of organic compounds represent a novel opportunity for conversion of light to chemical energy at room temperature. However, the mechanistic insights of interaction between plasmon energy and organic molecules is still under debate. Herein, we proposed a comprehensive study of the plasmon-assisted reaction mechanism using unsymmetric iodonium salts (ISs) as an organic probe. The experimental and theoretical analysis allow us to exclude the possible thermal effect or hot electron transfer. We found that plasmon interaction with unsymmetrical ISs led to the intramolecular excitation of electron followed by the regioselective cleavage of C-I bond with the formation of electron-rich radical species, which cannot be explained by the hot electron excitation or thermal effects. The high regioselectivity is explained by the direct excitation of electron to LUMO with the formation of a dissociative excited state according to quantum-chemical modeling, which provides novel opportunities for the fine control of reactivity using plasmon energy.
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Affiliation(s)
- Elena Miliutina
- Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk 634050, Russia
- Institute of Chemical Technology, Technicka 5, Prague 16628, Czech Republic
| | - Olga Guselnikova
- Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk 634050, Russia
- Institute of Chemical Technology, Technicka 5, Prague 16628, Czech Republic
| | - Natalia S Soldatova
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab., 7/9, Saint Petersburg, Russian Federation
| | - Polina Bainova
- Institute of Chemical Technology, Technicka 5, Prague 16628, Czech Republic
| | - Roman Elashnikov
- Institute of Chemical Technology, Technicka 5, Prague 16628, Czech Republic
| | - Přemysl Fitl
- Institute of Chemical Technology, Technicka 5, Prague 16628, Czech Republic
| | - Theo Kurten
- Department of Chemistry, University of Helsinki, Helsinki FIN-00014, Finland
| | - Mekhman S Yusubov
- Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk 634050, Russia
| | - Václav Švorčík
- Institute of Chemical Technology, Technicka 5, Prague 16628, Czech Republic
| | - Rashid R Valiev
- Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk 634050, Russia
- Department of Chemistry, University of Helsinki, Helsinki FIN-00014, Finland
| | - Mohamed M Chehimi
- University Paris-Est Créteil, 61 Avenue du Général de Gaulle, 94000 Créteil, France
| | - Oleksiy Lyutakov
- Institute of Chemical Technology, Technicka 5, Prague 16628, Czech Republic
| | - Pavel S Postnikov
- Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk 634050, Russia
- Institute of Chemical Technology, Technicka 5, Prague 16628, Czech Republic
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9
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Ding W, Wang C, Tan JR, Ho CC, León F, García F, Yoshikai N. Site-selective aromatic C-H λ 3-iodanation with a cyclic iodine(iii) electrophile in solution and solid phases. Chem Sci 2020; 11:7356-7361. [PMID: 34123017 PMCID: PMC8159425 DOI: 10.1039/d0sc02737e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
An efficient and site-selective aromatic C-H λ3-iodanation reaction is achieved using benziodoxole triflate (BXT) as an electrophile under room temperature conditions. The reaction tolerates a variety of electron-rich arenes and heteroarenes to afford the corresponding arylbenziodoxoles in moderate to good yields. The reaction can also be performed mechanochemically by grinding a mixture of solid arenes and BXT under solvent-free conditions. The arylbenziodoxoles can be used for various C-C and C-heteroatom bond formations, and are also amenable to further modification by electrophilic halogenation. DFT calculations suggested that the present reaction proceeds via a concerted λ3-iodanation-deprotonation transition state, where the triflate anion acts as an internal base.
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Affiliation(s)
- Wei Ding
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Chen Wang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore .,Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University Shaoxing 312000 China
| | - Jie Ren Tan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Chang Chin Ho
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Felix León
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Felipe García
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
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10
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Cerveri A, Bandini M. Recent Advances in the Catalytic Functionalization of “Electrophilic” Indoles. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900446] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Alessandro Cerveri
- Dipartimento di Chimica “Giacomo Ciamician” – Alma Mater Studiorum Università di Bologna Via Selmi 2 40126 Bologna Italy
| | - Marco Bandini
- Dipartimento di Chimica “Giacomo Ciamician” – Alma Mater Studiorum Università di Bologna Via Selmi 2 40126 Bologna Italy
- Consorzio C.I.N.M.P.I.S. Via Selmi 2 40126 Bologna Italy
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11
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Mudithanapelli C, Kim MH. Metal-free late-stage C(sp 2)-H functionalization of N-aryl amines with various sodium salts. Org Biomol Chem 2020; 18:450-464. [PMID: 31799581 DOI: 10.1039/c9ob02217a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Metal-free consecutive C(sp2)-X (X = Cl, Br, S, N) bond formations of N-aryl amines (cyclic, fused, carbamate, and aminium radicals) were achieved under mild conditions using [bis(trifluoroacetoxy)iodo]benzene (PIFA) and simple nonharmful sodium salts. This direct and selective C(sp2)-H functionalization showed excellent functional group compatibility, cost effectiveness, and late-stage applicability for the synthesis of biologically active natural products. Two mechanisms were proposed to explain the ortho- or para-preference, as well as the accelerating effect of CH3NO2.
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Affiliation(s)
- Chandrashekar Mudithanapelli
- Gachon Institute of Pharmaceutical Science & Department of Pharmacy, College of Pharmacy, Gachon University, 191 Hambakmoeiro, Yeonsu-gu, Incheon 21936, Republic of Korea.
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12
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Kita Y, Dohi T, Komiyama K, Ueda S, Yamaoka N. Benzylic Oxidation and Functionalizations of Xanthenes by Ligand Trasfer Reactions of Hypervalent Iodine Reagents. HETEROCYCLES 2020. [DOI: 10.3987/com-19-14139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Morimoto K. Metal-Free Oxidative Cross-Coupling Reaction of Heteroaromatic and Related Compounds. Chem Pharm Bull (Tokyo) 2019; 67:1259-1270. [PMID: 31787652 DOI: 10.1248/cpb.c19-00286] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The biary unit having heteroatom as important scaffolds widely exist in a large number of biologically active compounds and functional organic molecules. Since the cross-coupling is a useful synthetic method for constructing biaryl and heterobiaryl structures, the development of novel cross-coupling methods has been studied intensively. The oxidative biaryl coupling reaction of aromatic compounds having heteroatoms is an attractive method since they do not require the prefunctionalization of arenes. This report describes recent advances in hypervalent iodine(III) induced metal-free synthesis of biaryls having heteroatoms.
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Affiliation(s)
- Koji Morimoto
- College of Pharmaceutical Sciences, Ritsumeikan University.,Research Organization of Science and Technology, Ritsumeikan University
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14
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Budhwan R, Yadav S, Murarka S. Late stage functionalization of heterocycles using hypervalent iodine(iii) reagents. Org Biomol Chem 2019; 17:6326-6341. [PMID: 31215580 DOI: 10.1039/c9ob00694j] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Late stage functionalization (LSF) through direct X-H manipulations (X = C, N) enables synthetic chemists to accelerate the diversification of natural products, agrochemicals and pharmaceuticals allowing rapid access to novel bioactive molecules without resorting to arduous de novo synthesis. LSF does not only allow tapping of the hitherto unexplored chemical space but also renders the synthetic sequence more straightforward, atom economical and cost-effective. In this regard, the recent decade has witnessed the emergence of hypervalent iodine(iii) reagents as a powerful synthetic tool owing to their easy availability, mild reaction conditions, remarkable oxidizing properties and high functional group tolerance. Iodine(iii) reagents have tremendous applications in the regio- and chemo-selective late-stage functionalization of a diverse variety of heterocycles through an exciting range of transformations, such as oxidative amination, cross-dehydrogenative coupling (CDC), fluoroalkylation, azidation, halogenation and oxidation. The present review, classified according to the types of synthetic methods involved, encompasses all these recent developments in the field of transition-metal-free iodine(iii)-catalyzed/mediated direct functionalizations of heterocycles with representative examples and insightful mechanistic discussions.
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Affiliation(s)
- Rajnish Budhwan
- Department of Chemistry, Indian Institute of Technology Jodhpur, NH-65 Nagaur Road, Karwar - 342037, Jodhpur District, Rajasthan, India.
| | - Suman Yadav
- Department of Chemistry, Indian Institute of Technology Jodhpur, NH-65 Nagaur Road, Karwar - 342037, Jodhpur District, Rajasthan, India.
| | - Sandip Murarka
- Department of Chemistry, Indian Institute of Technology Jodhpur, NH-65 Nagaur Road, Karwar - 342037, Jodhpur District, Rajasthan, India.
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15
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Huang W, Chen S, Chen Z, Yue M, Li M, Gu Y. Synthesis of Multisubstituted Pyrroles from Enolizable Aldehydes and Primary Amines Promoted by Iodine. J Org Chem 2019; 84:5655-5666. [DOI: 10.1021/acs.joc.9b00596] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Wenbo Huang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, 430074 Wuhan, China
| | - Shaomin Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, 430074 Wuhan, China
| | - Zhiyan Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, 430074 Wuhan, China
| | - Meie Yue
- College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 266042 Qingdao, China
| | - Minghao Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, 430074 Wuhan, China
| | - Yanlong Gu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Material Chemistry and Service Failure, Huazhong University of Science and Technology, 430074 Wuhan, China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, 730000 Lanzhou, China
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16
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Convenient Synthesis of 6,7,12,13-Tetrahydro-5 H-Cyclohepta[2,1- b:3,4- b']diindole Derivatives Mediated by Hypervalent Iodine (III) Reagent. Molecules 2019; 24:molecules24050960. [PMID: 30857232 PMCID: PMC6429186 DOI: 10.3390/molecules24050960] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 03/04/2019] [Accepted: 03/06/2019] [Indexed: 01/24/2023] Open
Abstract
Bisindolyl alkaloids represent a large family of natural and synthetic products that display various biological activities. Among the bisindole compounds, 6,7,12,13-tetrahydro-5H-cyclohepta[2,1-b:3,4-b']diindoles have received little attention. Only two methods have been developed for the construction of the 6,7,12,13-tetrahydro-5H-cyclohepta[2,1-b:3,4-b']diindole scaffold thus far, including the classical Fischer indole synthesis conducted by reacting indole-fused cycloheptanone and hydrazines, and the condensation reaction to build the seven-membered ring. Here, we report for the first time a new route to synthesize 6,7,12,13-tetrahydro-5H-cyclohepta[2,1-b:3,4-b']diindoles through intramolecular oxidative coupling of 1,3-di(1H-indol-3-yl)propanes in the presence of PIFA, DDQ and TMSCl with moderate to excellent yields.
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17
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Fan H, Pan P, Zhang Y, Wang W. Synthesis of 2-Quinolinones via a Hypervalent Iodine(III)-Mediated Intramolecular Decarboxylative Heck-Type Reaction at Room Temperature. Org Lett 2018; 20:7929-7932. [DOI: 10.1021/acs.orglett.8b03503] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Huaqiang Fan
- State Key Laboratory of Bioengineering Reactor, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Peng Pan
- State Key Laboratory of Bioengineering Reactor, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Yongqiang Zhang
- State Key Laboratory of Bioengineering Reactor, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wei Wang
- State Key Laboratory of Bioengineering Reactor, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, Arizona 85721-0207, United States
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18
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Caramenti P, Nandi RK, Waser J. Metal-Free Oxidative Cross Coupling of Indoles with Electron-Rich (Hetero)arenes. Chemistry 2018; 24:10049-10053. [PMID: 29726049 DOI: 10.1002/chem.201802142] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Indexed: 01/24/2023]
Abstract
A new method for the synthesis of bi-heteroaryls is reported, based on the umpolung of indoles with benziodoxol(on)e hypervalent iodine reagents (IndoleBX). The oxidative coupling of IndoleBX with an equimolar amount of electron-rich benzenes, indoles, pyrroles, and thiophenes proceeded under mild transition-metal-free conditions. Functionalized non-symmetrical bi-indolyl heterocycles were accessed efficiently. Introduction of a new type of C2-substituted indole benziodoxole reagents further allowed extending the scope of the reaction to NH unprotected and C3-alkylated indoles. The obtained bi-heterocycles are important building blocks in synthetic and medicinal chemistry, and could be easily transformed into more complex heterocyclic systems.
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Affiliation(s)
- Paola Caramenti
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015, Lausanne, CH
| | - Raj Kumar Nandi
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015, Lausanne, CH
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015, Lausanne, CH
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19
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Lu N, Huang L, Xie L, Cheng J. Transition-Metal-Free Selective Iodoarylation of Pyrazoles via Heterocyclic Aryliodonium Ylides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800416] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nannan Lu
- State Key Laboratory of Photocatalysis on Energy and Environment; College of Chemistry; Fuzhou University; 350116 Fuzhou P. R. China
| | - Liangsen Huang
- State Key Laboratory of Photocatalysis on Energy and Environment; College of Chemistry; Fuzhou University; 350116 Fuzhou P. R. China
| | - Lili Xie
- State Key Laboratory of Photocatalysis on Energy and Environment; College of Chemistry; Fuzhou University; 350116 Fuzhou P. R. China
| | - Jiajia Cheng
- State Key Laboratory of Photocatalysis on Energy and Environment; College of Chemistry; Fuzhou University; 350116 Fuzhou P. R. China
- State Key Laboratory of Structural Chemistry; Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; 350002 Fuzhou Fujian P. R. China
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20
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Wu X, Iwata T, Scharf A, Qin T, Reichl KD, Porco JA. Asymmetric Synthesis of Gonytolide A: Strategic Use of an Aryl Halide Blocking Group for Oxidative Coupling. J Am Chem Soc 2018; 140:5969-5975. [PMID: 29658717 PMCID: PMC5943148 DOI: 10.1021/jacs.8b02535] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The first synthesis of the chromanone lactone dimer gonytolide A has been achieved employing vanadium(V)-mediated oxidative coupling of the monomer gonytolide C. An o-bromine blocking group strategy was employed to favor para- para coupling and to enable kinetic resolution of (±)-gonytolide C. Asymmetric conjugate reduction enabled practical kinetic resolution of a chiral, racemic precursor and the asymmetric synthesis of (+)-gonytolide A and its atropisomer.
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Affiliation(s)
| | | | - Adam Scharf
- Department of Chemistry and Center for Molecular Discovery (BU-CMD),
Boston University, Boston, Massachusetts 02215, United States
| | - Tian Qin
- Department of Chemistry and Center for Molecular Discovery (BU-CMD),
Boston University, Boston, Massachusetts 02215, United States
| | - Kyle D. Reichl
- Department of Chemistry and Center for Molecular Discovery (BU-CMD),
Boston University, Boston, Massachusetts 02215, United States
| | - John A. Porco
- Department of Chemistry and Center for Molecular Discovery (BU-CMD),
Boston University, Boston, Massachusetts 02215, United States
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21
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Chen H, Han J, Wang L. Diels-Alder cycloadditions of N-arylpyrroles via aryne intermediates using diaryliodonium salts. Beilstein J Org Chem 2018; 14:354-363. [PMID: 29507640 PMCID: PMC5815300 DOI: 10.3762/bjoc.14.23] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 01/26/2018] [Indexed: 11/23/2022] Open
Abstract
With a strategy of the formation of benzynes by using diaryliodonium salts, a cycloaddition reaction of N-arylpyrroles with benzynes was reported. A wide range of bridge-ring amines with various substituents have been synthesized in moderate to excellent yields (35-96%). Furthermore, with a catalytic amount of TsOH·H2O, these amines can be converted into the corresponding N-phenylamine derivatives easily, which are potentially useful in photosensitive dyes.
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Affiliation(s)
- Huangguan Chen
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Jianwei Han
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China.,Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, The Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Limin Wang
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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22
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Kita Y, Morimoto K, Kamitanaka T, Dohi T. Metal-Free Oxidative Cross-Coupling of Pyrroles with Electron-Rich Arenes Using Recyclable Hypervalent Iodine(III) Reagent. HETEROCYCLES 2018. [DOI: 10.3987/com-18-s(t)52] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Caramenti P, Waser J. Bench-Stable Electrophilic Indole and Pyrrole Reagents: Serendipitous Discovery and Use in C-H Functionalization. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201700221] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Paola Caramenti
- Laboratory of Catalysis and Organic Synthesis; Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO; Av. Forel 2 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis; Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO; Av. Forel 2 1015 Lausanne Switzerland
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24
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Wu B, Wu J, Yoshikai N. Benziodoxole Triflate as a Versatile Reagent for Iodo(III)cyclization of Alkynes. Chem Asian J 2017; 12:3123-3127. [PMID: 29086497 DOI: 10.1002/asia.201701530] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Indexed: 01/23/2023]
Abstract
The utility of benziodoxole triflate, derived from α,α-bis(trifluoromethyl)-2-iodobenzyl alcohol, as a versatile reagent for iodo(III)cyclization via electrophilic activation of alkyne, is reported herein. The reagent promotes cyclization of alkynes tethered to a variety of nucleophilic moieties, affording benziodoxole-appended (hetero)arenes such as benzofurans, benzothiophenes, isocoumarins, indoles, and polyaromatics under mild conditions. This unprecedented class of (hetero)aryl-IIII compounds proved easy to purify, stable, and amenable to various synthetic transformations.
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Affiliation(s)
- Bin Wu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Junliang Wu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
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25
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Guha S, Kazi I, Nandy A, Sekar G. Role of Lewis-Base-Coordinated Halogen(I) Intermediates in Organic Synthesis: The Journey from Unstable Intermediates to Versatile Reagents. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700916] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Somraj Guha
- Department of Chemistry; Indian Institute of Technology; 600036 Madras Chennai India
| | - Imran Kazi
- Department of Chemistry; Indian Institute of Technology; 600036 Madras Chennai India
| | - Anuradha Nandy
- Department of Chemistry; Indian Institute of Technology; 600036 Madras Chennai India
| | - Govindasamy Sekar
- Department of Chemistry; Indian Institute of Technology; 600036 Madras Chennai India
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26
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Dohi T, Koseki D, Sumida K, Okada K, Mizuno S, Kato A, Morimoto K, Kita Y. Metal-Free O
-Arylation of Carboxylic Acid by Active Diaryliodonium(III) Intermediates Generated in situ
from Iodosoarenes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700843] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toshifumi Dohi
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Daichi Koseki
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Kohei Sumida
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Kana Okada
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Serina Mizuno
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Asami Kato
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Koji Morimoto
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Yasuyuki Kita
- Research Organization of Science and Technology; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
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27
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Stuart DR. Aryl Transfer Selectivity in Metal-Free Reactions of Unsymmetrical Diaryliodonium Salts. Chemistry 2017; 23:15852-15863. [PMID: 28793179 DOI: 10.1002/chem.201702732] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Indexed: 11/07/2022]
Abstract
Aromatic rings are found in a wide variety of products, including pharmaceuticals, agrochemicals, and functional materials. Diaryliodonium salts are new reagents used to transfer aryl groups under both metal-free and metal-catalyzed reactions and thereby synthesize arene-containing compounds. This minireview focuses on recent studies in selective aryl transfer reactions from unsymmetrical diaryliodonium salts under metal-free conditions. Reactions reported from 2007 to 2017, which represents a period of significant growth in diaryliodonium salt chemistry, are presented and organized by the type of reactive intermediate formed in the reaction. Specifically, reactions involving λ3 -iodane, λ3 -iodane radical anions, aryl radicals, and arynes are discussed. Chemoselectivity trends in aryl transfer are compared and contrasted across reaction intermediates and translation to potential auxiliaries are posited.
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Affiliation(s)
- David R Stuart
- Department of Chemistry, Portland State University, 1719 SW 10thAve, Portland, OR, 97201, USA
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28
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Caramenti P, Nicolai S, Waser J. Indole- and Pyrrole-BX: Bench-Stable Hypervalent Iodine Reagents for Heterocycle Umpolung. Chemistry 2017; 23:14702-14706. [PMID: 28796395 DOI: 10.1002/chem.201703723] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Indexed: 01/09/2023]
Abstract
The one-step synthesis of the bench-stable hypervalent iodine reagents IndoleBX and PyrroleBX using mild Lewis acid catalyzed conditions is reported. The new reagents are stable up to 150 °C and were applied in the C-H arylation of unactivated arenes using either rhodium or ruthenium catalysts. A broad range of heterocyclic systems of high interest for synthetic and medicinal chemistry was accessed in high yields. The developed C-H functionalization could not be achieved using reported reagents or methods, highlighting the unique reactivity of Indole- and Pyrrole-BX.
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Affiliation(s)
- Paola Caramenti
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015, Lausanne, Switzerland
| | - Stefano Nicolai
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015, Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015, Lausanne, Switzerland
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