1
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Prasanna R, Banik S, Ajay C, Sridhar B, Mohapatra DK, Subba Reddy BV. Catalyst-free photoarylation of 2-aryl-2 H-indazoles by carbon-iodine bond activation. Org Biomol Chem 2024. [PMID: 39011591 DOI: 10.1039/d4ob00820k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
A photocatalyst-free visible-light induced arylation of 2-aryl-2H-indazoles with aryl iodides has been developed for the first time to produce 3,2-diaryl-2H-indazoles in good to moderate yields. In this transformation, potassium tert-butoxide acts as an activator of the C-I bond and also as a scavenger of in situ generated HI in the reaction. This method exhibits high functional group tolerance with a wide substrate scope and it has been successfully applied to the synthesis of liver X receptor agonists and also for fluorescent probes. This is the first report on the photoarylation of 2-arylindazoles at the C3-position with aryl iodides under catalyst-free conditions.
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Affiliation(s)
- Ram Prasanna
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Swarnayu Banik
- Department of Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Chidrawar Ajay
- Department of Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - B Sridhar
- Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India
| | - Debendra K Mohapatra
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India
| | - B V Subba Reddy
- Department of Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad - 500007, India.
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2
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Kayastha N, Dutta D, Chutia K, Das B, Gogoi P. Synthesis and Photophysical Properties of 3-Substituted-1 H-Indazoles: A Pd-Catalyzed Double C-N Bond Formation Strategy via 1,6-Conjugate Addition. J Org Chem 2024; 89:402-413. [PMID: 38064714 DOI: 10.1021/acs.joc.3c02176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
A Pd-catalyzed cascade process for the direct synthesis of 3-substituted-1H-indazole employing p-quinone methide (p-QM) and arylhydrazine through Pd-catalyzed double C-N bond formation via 1,6-conjugate addition is reported. This reaction strategy affords efficient and practical access to synthetically important diverse 3-substituted-1H-indazoles in good yields. The photophysical properties of the synthesized 3-substituted-1H-indazoles are investigated, and some of them showed very good fluorescence properties with quantum yields up to 85%. Also, the synthesized 3-substituted-1H-indazole exhibits an acid-sensitive fluorescence turn-off activity.
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Affiliation(s)
- Nasib Kayastha
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Dhiraj Dutta
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kangkana Chutia
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Babulal Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Pranjal Gogoi
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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3
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Pan Q, Wu Y, Zheng A, Wang X, Li X, Wang W, Gao M, Bibi Z, Chaudhary S, Sun Y. Mechanochemical Synthesis of PdO 2 Nanoparticles Immobilized over Silica Gel for Catalytic Suzuki-Miyaura Cross-Coupling Reactions Leading to the C-3 Modification of 1 H-Indazole with Phenylboronic Acids. Molecules 2023; 28:7190. [PMID: 37894668 PMCID: PMC10609228 DOI: 10.3390/molecules28207190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/15/2023] [Accepted: 10/15/2023] [Indexed: 10/29/2023] Open
Abstract
The C-3 modification of 1H-indazole has produced active pharmaceuticals for the treatment of cancer and HIV. But, so far, this transformation has seemed less available, due to the lack of efficient C-C bond formation at the less reactive C-3 position. In this work, a series of silica gel-supported PdO2 nanoparticles of 25-66 nm size were prepared by ball milling silica gel with divalent palladium precursors, and then employed as catalysts for the Suzuki-Miyaura cross-coupling of 1H-indazole derivative with phenylboronic acid. All the synthesized catalysts showed much higher cross-coupling yields than their palladium precursors, and could also be reused three times without losing high activity and selectivity in a toluene/water/ethanol mixed solvent. Although the palladium precursors showed an order of activity of PdCl2(dppf, 1,1'-bis(diphenylphosphino)ferrocene) > PdCl2(dtbpf, 1,1'-bis(di-tert-butylphosphino)ferrocene) > Pd(OAc, acetate)2, the synthesized catalysts showed an order of C1 (from Pd(OAc)2) > C3 (from PdCl2(dtbpf)) > C2 (from PdCl2(dppf)), which conformed to the orders of BET (Brunauer-Emmett-Teller) surface areas and acidities of these catalysts. Notably, the most inexpensive Pd(OAc)2 can be used as a palladium precursor for the synthesis of the best catalyst through simple ball milling. This work provides a highly active and inexpensive series of catalysts for C-3 modification of 1H-indazole, which are significant for the large-scale production of 1H-indazole-based pharmaceuticals.
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Affiliation(s)
- Qin Pan
- Department of Applied Chemistry, School of Chemistry, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
- Xi’an Biomass Green Catalysis and Advanced Valorization International Science and Technology Cooperation Base, No. 28 Xianning West Road, Xi’an 710049, China
- Xixian New District Xingyi Advanced Materials Technology Co., Ltd., Room 1046, 1st Floor, Hongdelou Building No. 20, Science and Technology Innovation Port, Xi’an 712000, China
| | - Yong Wu
- Department of Applied Chemistry, School of Chemistry, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
- Xi’an Biomass Green Catalysis and Advanced Valorization International Science and Technology Cooperation Base, No. 28 Xianning West Road, Xi’an 710049, China
- Xixian New District Xingyi Advanced Materials Technology Co., Ltd., Room 1046, 1st Floor, Hongdelou Building No. 20, Science and Technology Innovation Port, Xi’an 712000, China
| | - Aqun Zheng
- Department of Applied Chemistry, School of Chemistry, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
| | - Xiangdong Wang
- Department of Applied Chemistry, School of Chemistry, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
- Xi’an Biomass Green Catalysis and Advanced Valorization International Science and Technology Cooperation Base, No. 28 Xianning West Road, Xi’an 710049, China
- Xixian New District Xingyi Advanced Materials Technology Co., Ltd., Room 1046, 1st Floor, Hongdelou Building No. 20, Science and Technology Innovation Port, Xi’an 712000, China
| | - Xiaoyong Li
- Department of Applied Chemistry, School of Chemistry, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
- Xi’an Biomass Green Catalysis and Advanced Valorization International Science and Technology Cooperation Base, No. 28 Xianning West Road, Xi’an 710049, China
- Xixian New District Xingyi Advanced Materials Technology Co., Ltd., Room 1046, 1st Floor, Hongdelou Building No. 20, Science and Technology Innovation Port, Xi’an 712000, China
| | - Wanqin Wang
- Department of Applied Chemistry, School of Chemistry, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
- Xi’an Biomass Green Catalysis and Advanced Valorization International Science and Technology Cooperation Base, No. 28 Xianning West Road, Xi’an 710049, China
- Xixian New District Xingyi Advanced Materials Technology Co., Ltd., Room 1046, 1st Floor, Hongdelou Building No. 20, Science and Technology Innovation Port, Xi’an 712000, China
| | - Min Gao
- Department of Applied Chemistry, School of Chemistry, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
- Xi’an Biomass Green Catalysis and Advanced Valorization International Science and Technology Cooperation Base, No. 28 Xianning West Road, Xi’an 710049, China
- Xixian New District Xingyi Advanced Materials Technology Co., Ltd., Room 1046, 1st Floor, Hongdelou Building No. 20, Science and Technology Innovation Port, Xi’an 712000, China
| | - Zainab Bibi
- Department of Applied Chemistry, School of Chemistry, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
| | - Sidra Chaudhary
- Department of Applied Chemistry, School of Chemistry, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
| | - Yang Sun
- Department of Applied Chemistry, School of Chemistry, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an 710049, China
- Xi’an Biomass Green Catalysis and Advanced Valorization International Science and Technology Cooperation Base, No. 28 Xianning West Road, Xi’an 710049, China
- Xixian New District Xingyi Advanced Materials Technology Co., Ltd., Room 1046, 1st Floor, Hongdelou Building No. 20, Science and Technology Innovation Port, Xi’an 712000, China
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4
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Guariento S, Chesi M, Bellina F, Copelli D, Venturi L, Bua E, Moretti E, Ronchi P. New Ligandless C−H Activation Procedure for The Decoration of C‐3 Position of 1H‐Indazole Derivatives. ChemistrySelect 2023. [DOI: 10.1002/slct.202203916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- Sara Guariento
- Chemistry Research and Drug Design Chiesi Farmaceutici S.p.A L.go Belloli 11/a 43122 Parma Italy
| | - Mattia Chesi
- Chemistry Research and Drug Design Chiesi Farmaceutici S.p.A L.go Belloli 11/a 43122 Parma Italy
| | - Fabio Bellina
- Dipartimento di Chimica e Chimica Industriale Università di Pisa Via Moruzzi 13 56124 Pisa Italy
| | - Diego Copelli
- GTD – Digital, Data & Modelling Chiesi Farmaceutici S.p.A L.go Belloli 11/a 43122 Parma Italy
| | - Luca Venturi
- Analytics and Early Formulation Department Chiesi Farmaceutici S.p.A L.go Belloli 11/a 43122 Parma Italy
| | - Emanuela Bua
- Food and Drug Department University of Parma Parco Area delle Scienze 27/A 43124 Parma PR Italy
| | - Elisa Moretti
- Analytics and Early Formulation Department Chiesi Farmaceutici S.p.A L.go Belloli 11/a 43122 Parma Italy
| | - Paolo Ronchi
- Chemistry Research and Drug Design Chiesi Farmaceutici S.p.A L.go Belloli 11/a 43122 Parma Italy
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5
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Mondal A, van Gemmeren M. Silver-Free C-H Activation: Strategic Approaches towards Realizing the Full Potential of C-H Activation in Sustainable Organic Synthesis. Angew Chem Int Ed Engl 2022; 61:e202210825. [PMID: 36062882 PMCID: PMC9828228 DOI: 10.1002/anie.202210825] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Indexed: 01/12/2023]
Abstract
The activation of carbon-hydrogen bonds is considered as one of the most attractive techniques in synthetic organic chemistry because it bears the potential to shorten synthetic routes as well as to produce complementary product scopes compared to traditional synthetic strategies. However, many current methods employ silver salts as additives, leading to stoichiometric metal waste and thereby preventing the full potential of C-H activation to be exploited. Therefore, the development of silver-free protocols has recently received increasing attention. Mechanistically, silver can serve various roles in C-H activation and thus, avoiding the use of silver requires different approaches based on the role it serves in a given process. In this Review, we present the comparison of silver-based and silver-free methods. Focusing on the strategic approaches to develop silver-free C-H activation, we provide the reader with the means to develop sustainable methods for C-H activation.
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Affiliation(s)
- Arup Mondal
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Manuel van Gemmeren
- Otto-Diels-Institut für Organische ChemieChristian-Albrechts-Universität zu KielOtto-Hahn-Platz 424118KielGermany
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6
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Yang Z, Yu JT, Pan C. Recent advances in C-H functionalization of 2 H-indazoles. Org Biomol Chem 2022; 20:7746-7764. [PMID: 36178474 DOI: 10.1039/d2ob01463g] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2H-Indazoles are one class of the most important nitrogen-containing heterocyclic compounds. The 2H-indazole motif is widely present in bioactive natural products and drug molecules that exhibit distinctive bioactivities. Therefore, much attention has been paid to access diverse 2H-indazole derivatives. Among them, the late-stage functionalization of 2H-indazoles via C-H activation is recognized as an efficient approach for increasing the complexity and diversity of 2H-indazole derivatives. In this review, we summarized recent achievements in the late-stage functionalization of 2H-indazoles, including the C3-functionalization of 2H-indazoles through transition metal-catalyzed C-H activation or a radical pathway, transition metal-catalyzed ortho C2'-H functionalization of 2H-indazoles and remote C-H functionalization at the benzene ring in 2H-indazoles.
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Affiliation(s)
- Zixian Yang
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Changduo Pan
- School of Chemistry and Chemical Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China.
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7
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Kuroyanagi S, Kikuchi S, Sumikoshi S, Uwano M, Chiba T, Yamakado R, Okada S. Synthesis of 3‐(Phenylcarbonyl)‐1H‐indazole Derivatives via Intramolecular Cyclization under Mild Conditions. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sota Kuroyanagi
- Yamagata University Graduate School of Organic Materials Science: Yamagata Daigaku Daigakuin Yuki Zairyo System Kenkyuka Department of Organic Materials Science JAPAN
| | - Shumpei Kikuchi
- Yamagata University: Yamagata Daigaku Department of Polymeric and Organic Materials Engineering JAPAN
| | - Shunsuke Sumikoshi
- Yamagata University Graduate School of Organic Materials Science: Yamagata Daigaku Daigakuin Yuki Zairyo System Kenkyuka Department of Organic Materials Science JAPAN
| | - Mizuho Uwano
- Yamagata University Graduate School of Organic Materials Science: Yamagata Daigaku Daigakuin Yuki Zairyo System Kenkyuka Department of Organic Materials Science JAPAN
| | - Takayuki Chiba
- Yamagata University Graduate School of Organic Materials Science: Yamagata Daigaku Daigakuin Yuki Zairyo System Kenkyuka Department of Organic Materials Science JAPAN
| | - Ryohei Yamakado
- Yamagata University Graduate School of Organic Materials Science: Yamagata Daigaku Daigakuin Yuki Zairyo System Kenkyuka Department of Organic Materials Science 4-3-16Jonan 992-8510 Yonezawa JAPAN
| | - Shuji Okada
- Yamagata University Graduate School of Organic Materials Science: Yamagata Daigaku Daigakuin Yuki Zairyo System Kenkyuka Department of Organic Materials Science JAPAN
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8
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Buglioni L, Raymenants F, Slattery A, Zondag SDA, Noël T. Technological Innovations in Photochemistry for Organic Synthesis: Flow Chemistry, High-Throughput Experimentation, Scale-up, and Photoelectrochemistry. Chem Rev 2022; 122:2752-2906. [PMID: 34375082 PMCID: PMC8796205 DOI: 10.1021/acs.chemrev.1c00332] [Citation(s) in RCA: 208] [Impact Index Per Article: 104.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Indexed: 02/08/2023]
Abstract
Photoinduced chemical transformations have received in recent years a tremendous amount of attention, providing a plethora of opportunities to synthetic organic chemists. However, performing a photochemical transformation can be quite a challenge because of various issues related to the delivery of photons. These challenges have barred the widespread adoption of photochemical steps in the chemical industry. However, in the past decade, several technological innovations have led to more reproducible, selective, and scalable photoinduced reactions. Herein, we provide a comprehensive overview of these exciting technological advances, including flow chemistry, high-throughput experimentation, reactor design and scale-up, and the combination of photo- and electro-chemistry.
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Affiliation(s)
- Laura Buglioni
- Micro
Flow Chemistry and Synthetic Methodology, Department of Chemical Engineering
and Chemistry, Eindhoven University of Technology, Het Kranenveld, Bldg 14—Helix, 5600 MB, Eindhoven, The Netherlands
- Flow
Chemistry Group, van ’t Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam (UvA), Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Fabian Raymenants
- Flow
Chemistry Group, van ’t Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam (UvA), Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Aidan Slattery
- Flow
Chemistry Group, van ’t Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam (UvA), Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Stefan D. A. Zondag
- Flow
Chemistry Group, van ’t Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam (UvA), Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Timothy Noël
- Flow
Chemistry Group, van ’t Hoff Institute for Molecular Sciences
(HIMS), Universiteit van Amsterdam (UvA), Science Park 904, 1098 XH, Amsterdam, The Netherlands
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9
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Camats M, Favier I, Mallet-Ladeira S, Pla D, Gómez M. Understanding Cu(II)-based systems for C(sp 3)-H bond functionalization: insights into the synthesis of aza-heterocycles. Org Biomol Chem 2021; 20:219-227. [PMID: 34878447 DOI: 10.1039/d1ob02118d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report the synthesis of imidazo[1,5-a]pyridine heterocycles via a Cu(II)-mediated functionalization of α'-C(sp3)-H bonds of pyridinylaldimines and subsequent cyclization. This strategy exploits the inherent directing ability of heteroleptic aldimine and pyridine groups in the substrate yielding the C-H functionalization of α'-methylene groups in a regioselective fashion over distant methyl or methylene groups in β or γ positions. The observed correlation between the nature of the anionic ligands (halide vs. carboxylate) bonded to copper and the chemoselectivity of the C(sp3)-H activation process points to a concerted metalation-deprotonation pathway prior to cyclization to furnish the corresponding imidazo[1,5-a]pyridine derivative. This copper-mediated C(sp3)-H bond functionalization reaction works for a variety of substrates incorporating linear alkyl chains (from 3 to 12 carbon atoms), and good functional group tolerance (aryl, ether and ester groups). Cu-Catalyzed C(sp2)-H cyanation on the imidazole ring can then take place selectively under oxidative conditions.
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Affiliation(s)
- Marc Camats
- Laboratoire Hétérochimie Fondamentale et Appliquée, CNRS UMR 5069, Université Toulouse 3 - Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 09, France.
| | - Isabelle Favier
- Laboratoire Hétérochimie Fondamentale et Appliquée, CNRS UMR 5069, Université Toulouse 3 - Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 09, France.
| | - Sonia Mallet-Ladeira
- Institut de Chimie de Toulouse, CNRS UAR 2599, 118 Route de Narbonne, Toulouse 31062 Cedex 09, France
| | - Daniel Pla
- Laboratoire Hétérochimie Fondamentale et Appliquée, CNRS UMR 5069, Université Toulouse 3 - Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 09, France.
| | - Montserrat Gómez
- Laboratoire Hétérochimie Fondamentale et Appliquée, CNRS UMR 5069, Université Toulouse 3 - Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 09, France.
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10
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Saritha R, Annes SB, Perumal K, Veerappan A, Ramesh S. Oxidative Coupling of Phenylhydrazine Hydrochloride With 2
H
‐Indazole Derivatives Using Visible Light Activation of Carbazole Based Organophotocatalyst. ChemistrySelect 2021. [DOI: 10.1002/slct.202102903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Rajendhiran Saritha
- Department of Chemistry School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 Tamil Nadu India
| | - Sesuraj Babiola Annes
- Department of Chemistry School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 Tamil Nadu India
| | - Karuppaiah Perumal
- Department of Chemistry School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 Tamil Nadu India
| | - Anbazhagan Veerappan
- Department of Chemistry School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 Tamil Nadu India
| | - Subburethinam Ramesh
- Department of Chemistry School of Chemical and Biotechnology SASTRA Deemed University Thanjavur 613401 Tamil Nadu India
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11
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Zhang J, Kong K, Li X, Zhang Q. Kemp-type elimination of 1-arylsulfonyl-3-iodo-1 H-indazoles. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1939053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Jiawei Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - Kaimin Kong
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - Xiangjun Li
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - Qian Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai, China
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12
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Saritha R, Annes SB, Ramesh S. Metal-free, regioselective, visible light activation of 4CzIPN for the arylation of 2 H-indazole derivatives. RSC Adv 2021; 11:14079-14084. [PMID: 35423934 PMCID: PMC8697759 DOI: 10.1039/d1ra02372a] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 03/31/2021] [Indexed: 12/23/2022] Open
Abstract
Highly regioselective organo photocatalysis of 4CzIPN (1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene) for the arylation of 2H-indazole is demonstrated. The present synthetic route provides a highly safe and easily accessible aniline precursor as an arylation reagent. The photoactivated 4CzIPN organocatalyst is found to be more efficient for single electron transfer without any organic base for the radical reaction. The carbazole-based photocatalyst (4CzIPN) with wide redox potential is stable and recyclable for further reaction transformations. Many indazole and aniline derivatives were used in the reaction and provided the arylated indazole derivatives in good to excellent yield. Highly regioselective organo photocatalysis of 4CzIPN (1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene) for the arylation of 2H-indazole is demonstrated.![]()
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Affiliation(s)
- Rajendhiran Saritha
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University Thanjavur 613401 Tamil Nadu India
| | - Sesuraj Babiola Annes
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University Thanjavur 613401 Tamil Nadu India
| | - Subburethinam Ramesh
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University Thanjavur 613401 Tamil Nadu India
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13
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Gambouz K, Abbouchi AE, Nassiri S, Suzenet F, Bousmina M, Akssira M, Guillaumet G, El Kazzouli S. Palladium‐Catalyzed Oxidative Arylation of 1
H
‐Indazoles with Arenes. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Khadija Gambouz
- Laboratoire de Chimie Physique et Chimie Bioorganique URAC 22 FSTM Université Hassan II – Casablanca BP 146 28800 Mohammedia Morocco
- Institut de Chimie Organique et Analytique Université d'Orléans UMR CNRS 7311 BP 6759 Orléans cedex 2 54067 France
- Euromed Research Center Engineering School of Biomedical and Biotechnology Euromed University of Fes (UEMF) Route de Meknès 30000 Fes Morocco
| | - Abdelmoula El Abbouchi
- Institut de Chimie Organique et Analytique Université d'Orléans UMR CNRS 7311 BP 6759 Orléans cedex 2 54067 France
- Euromed Research Center Engineering School of Biomedical and Biotechnology Euromed University of Fes (UEMF) Route de Meknès 30000 Fes Morocco
| | - Sarah Nassiri
- Institut de Chimie Organique et Analytique Université d'Orléans UMR CNRS 7311 BP 6759 Orléans cedex 2 54067 France
- Euromed Research Center Engineering School of Biomedical and Biotechnology Euromed University of Fes (UEMF) Route de Meknès 30000 Fes Morocco
| | - Franck Suzenet
- Institut de Chimie Organique et Analytique Université d'Orléans UMR CNRS 7311 BP 6759 Orléans cedex 2 54067 France
| | - Mostapha Bousmina
- Euromed Research Center Engineering School of Biomedical and Biotechnology Euromed University of Fes (UEMF) Route de Meknès 30000 Fes Morocco
| | - Mohamed Akssira
- Laboratoire de Chimie Physique et Chimie Bioorganique URAC 22 FSTM Université Hassan II – Casablanca BP 146 28800 Mohammedia Morocco
| | - Gérald Guillaumet
- Institut de Chimie Organique et Analytique Université d'Orléans UMR CNRS 7311 BP 6759 Orléans cedex 2 54067 France
- Euromed Research Center Engineering School of Biomedical and Biotechnology Euromed University of Fes (UEMF) Route de Meknès 30000 Fes Morocco
| | - Saïd El Kazzouli
- Euromed Research Center Engineering School of Biomedical and Biotechnology Euromed University of Fes (UEMF) Route de Meknès 30000 Fes Morocco
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14
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Song AX, Zeng XX, Ma BB, Xu C, Liu FS. Direct (Hetero)arylation of Heteroarenes Catalyzed by Unsymmetrical Pd-PEPPSI-NHC Complexes under Mild Conditions. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00494] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- A-Xiang Song
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, People’s Republic of China
| | - Xiao-Xiao Zeng
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, People’s Republic of China
| | - Bei-Bei Ma
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, People’s Republic of China
| | - Chang Xu
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, People’s Republic of China
| | - Feng-Shou Liu
- School of Chemistry and Chemical Engineering, Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, People’s Republic of China
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15
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Ghosh S, Mondal S, Hajra A. Direct Catalytic Functionalization of Indazole Derivatives. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000423] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sumit Ghosh
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Susmita Mondal
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Alakananda Hajra
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
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16
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Gambouz K, El Abbouchi A, Nassiri S, Suzenet F, Bousmina M, Akssira M, Guillaumet G, El Kazzouli S. "On Water" Palladium Catalyzed Direct Arylation of 1 H-Indazole and 1 H-7-Azaindazole. Molecules 2020; 25:molecules25122820. [PMID: 32570894 PMCID: PMC7356112 DOI: 10.3390/molecules25122820] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 06/14/2020] [Accepted: 06/16/2020] [Indexed: 11/16/2022] Open
Abstract
The C3 direct arylation of 1H-indazole and 1H-7-azaindazole has been a significant challenge due to the lack of the reactivity at this position. In this paper, we describe a mild and an efficient synthesis of new series of C3-aryled 1H-indazoles and C3-aryled 1H-7-azaindazoles via a C3 direct arylation using water as solvent. On water, PPh3 was effective as a ligand along with a lower charge of the catalyst Pd(OAc)2 (5 mol%) at 100 °C, leading to C3-aryled 1H-indazoles or C3-aryled 1H-7-azaindazoles in moderate to good yields.
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Affiliation(s)
- Khadija Gambouz
- Faculty of Sciences and Technologies Mohammedia, University Hassan 2, URAC 22 FSTM University Hassan II—Casablanca, BP 146, Mohammedia 28800, Morocco; (K.G.); (M.A.)
- Institut de Chimie Organique et Analytique, University of Orléans, UMR CNRS 7311, BP 6759, CEDEX 2, 54067 Orléans, France; (A.E.A.); (S.N.); (F.S.)
- Euromed Research Center, Euromed Institute of Technology, Euromed University of Fes (UEMF), Route de Meknès, Rond-point de Bensouda, Fes 30000, Morocco;
| | - Abdelmoula El Abbouchi
- Institut de Chimie Organique et Analytique, University of Orléans, UMR CNRS 7311, BP 6759, CEDEX 2, 54067 Orléans, France; (A.E.A.); (S.N.); (F.S.)
- Euromed Research Center, Euromed Institute of Technology, Euromed University of Fes (UEMF), Route de Meknès, Rond-point de Bensouda, Fes 30000, Morocco;
| | - Sarah Nassiri
- Institut de Chimie Organique et Analytique, University of Orléans, UMR CNRS 7311, BP 6759, CEDEX 2, 54067 Orléans, France; (A.E.A.); (S.N.); (F.S.)
- Euromed Research Center, Euromed Institute of Technology, Euromed University of Fes (UEMF), Route de Meknès, Rond-point de Bensouda, Fes 30000, Morocco;
| | - Franck Suzenet
- Institut de Chimie Organique et Analytique, University of Orléans, UMR CNRS 7311, BP 6759, CEDEX 2, 54067 Orléans, France; (A.E.A.); (S.N.); (F.S.)
| | - Mostapha Bousmina
- Euromed Research Center, Euromed Institute of Technology, Euromed University of Fes (UEMF), Route de Meknès, Rond-point de Bensouda, Fes 30000, Morocco;
| | - Mohamed Akssira
- Faculty of Sciences and Technologies Mohammedia, University Hassan 2, URAC 22 FSTM University Hassan II—Casablanca, BP 146, Mohammedia 28800, Morocco; (K.G.); (M.A.)
| | - Gérald Guillaumet
- Institut de Chimie Organique et Analytique, University of Orléans, UMR CNRS 7311, BP 6759, CEDEX 2, 54067 Orléans, France; (A.E.A.); (S.N.); (F.S.)
- Euromed Research Center, Euromed Institute of Technology, Euromed University of Fes (UEMF), Route de Meknès, Rond-point de Bensouda, Fes 30000, Morocco;
- Correspondence: (G.G.); (S.E.K.); Tel.: +212-6612-99-565 (S.E.K.)
| | - Saïd El Kazzouli
- Euromed Research Center, Euromed Institute of Technology, Euromed University of Fes (UEMF), Route de Meknès, Rond-point de Bensouda, Fes 30000, Morocco;
- Correspondence: (G.G.); (S.E.K.); Tel.: +212-6612-99-565 (S.E.K.)
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17
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Yadav L, Chaudhary S. Bu4NI-catalyzed, oxidative C(sp2)–C(sp3) cross dehydrogenative coupling for the regioselective direct C-3 benzylation of 2H-indazoles. Org Biomol Chem 2020; 18:5927-5936. [DOI: 10.1039/d0ob01282c] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A Bu4NI-catalyzed, DTBP-promoted, regioselective C(sp2)–C(sp3) cross dehydrogenative coupling (CDC) protocol for the direct C-3 benzylation of 2H-indazoles is reported.
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Affiliation(s)
- Lalit Yadav
- Laboratory of Organic and Medicinal Chemistry (OMC Lab)
- Department of Chemistry
- Malaviya National Institute of Technology
- Jaipur 302017
- India
| | - Sandeep Chaudhary
- Laboratory of Organic and Medicinal Chemistry (OMC Lab)
- Department of Chemistry
- Malaviya National Institute of Technology
- Jaipur 302017
- India
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18
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Yu J, Yang X, Wu C, Su W. Palladium-Catalyzed C–H/C–H Cross-Coupling by Mechanochemistry: Direct Alkenylation and Heteroarylation of N1-Protected 1H-Indazoles. J Org Chem 2019; 85:1009-1021. [DOI: 10.1021/acs.joc.9b02951] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jingbo Yu
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Xinjie Yang
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Chongyang Wu
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Weike Su
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
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19
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Aganda KCC, Kim J, Lee A. Visible-light-mediated direct C3-arylation of 2H-indazoles enabled by an electron-donor-acceptor complex. Org Biomol Chem 2019; 17:9698-9702. [PMID: 31696189 DOI: 10.1039/c9ob02074h] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mild visible-light-mediated, photocatalyst-free arylation of 2H-indazoles was developed. The formation of an electron donor-acceptor complex by 2H-indazoles and aryl diazonium salts in the presence of pyridine allows the direct arylation of 2H-indazoles under visible-light irradiation. This process provides an efficient route for the synthesis of C3-arylated-2H-indazoles, which are important scaffolds of various bioactive compounds.
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Affiliation(s)
- Kim Christopher C Aganda
- Department of Energy Science and Technology, Myongji University, Yongin, 17058, Republic of Korea
| | - Junyoung Kim
- Department of Chemistry, Myongji University, Yongin 17058, Republic of Korea.
| | - Anna Lee
- Department of Energy Science and Technology, Myongji University, Yongin, 17058, Republic of Korea and Department of Chemistry, Myongji University, Yongin 17058, Republic of Korea.
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20
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Vidyacharan S, Ramanjaneyulu BT, Jang S, Kim DP. Continuous-Flow Visible Light Organophotocatalysis for Direct Arylation of 2H-Indazoles: Fast Access to Drug Molecules. CHEMSUSCHEM 2019; 12:2581-2586. [PMID: 30985985 DOI: 10.1002/cssc.201900736] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/09/2019] [Indexed: 06/09/2023]
Abstract
A continuous-flow homogeneous photocatalytic method has been devised for the direct arylation of 2H-indazoles. This visible-light-promoted approach directly accesses a wide range of structurally diverse C3-arylated scaffolds of biological interest in a fast (1 min), single-step reaction by using eosin Y as an organophotocatalyst. Furthermore, a microreactor technology is also employed for the fast synthesis of liver X receptor inhibitor drugs with very good yields under metal-free conditions, whereas the reported methods required multiple steps and much longer reaction times (18-24 h).
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Affiliation(s)
- Shinde Vidyacharan
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Bandaru T Ramanjaneyulu
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Seungwook Jang
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
| | - Dong-Pyo Kim
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 37673, Pohang, Korea
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21
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Zhao WQ, Qian K, Su CW, Shao L, Zhou W, Cui DM, Zhang C, Wang XL. Copper-catalyzed synthesis of pyrazolo[5,1-a]isoquinoline derivatives from 2-gem-dipyrazolylvinylbromobenzenes. NEW J CHEM 2019. [DOI: 10.1039/c9nj01882d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient copper-catalyzed synthesis of pyrazolo[5,1-a]isoquinolines from 2-gem-dipyrazolylvinylbromobenzenes under mild conditions has been developed.
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Affiliation(s)
- Wan Qiu Zhao
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Kun Qian
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Cheng Wu Su
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Lei Shao
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Wei Zhou
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Dong-Mei Cui
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Chen Zhang
- School of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Xiu-Li Wang
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541006
- China
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22
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Jang S, Vidyacharan S, Ramanjaneyulu BT, Gyak KW, Kim DP. Photocatalysis in a multi-capillary assembly microreactor: toward up-scaling the synthesis of 2H-indazoles as drug scaffolds. REACT CHEM ENG 2019. [DOI: 10.1039/c9re00239a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Visible-light-promoted direct arylation of 2H-indazoles using phenyldiazonium salt enabled a single-step and fast synthesis (<1 min) of C3 arylated products in high yields (>65%) in an eosin Y immobilized capillary microreactor.
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Affiliation(s)
- Seungwook Jang
- Center of Intelligent Microprocess of Pharmaceutical Synthesis
- Department of Chemical Engineering
- Pohang University of Science and Technology (POSTECH)
- Pohang
- 37673 Korea
| | - Shinde Vidyacharan
- Center of Intelligent Microprocess of Pharmaceutical Synthesis
- Department of Chemical Engineering
- Pohang University of Science and Technology (POSTECH)
- Pohang
- 37673 Korea
| | - Bandaru T. Ramanjaneyulu
- Center of Intelligent Microprocess of Pharmaceutical Synthesis
- Department of Chemical Engineering
- Pohang University of Science and Technology (POSTECH)
- Pohang
- 37673 Korea
| | - Ki-Won Gyak
- Center of Intelligent Microprocess of Pharmaceutical Synthesis
- Department of Chemical Engineering
- Pohang University of Science and Technology (POSTECH)
- Pohang
- 37673 Korea
| | - Dong-Pyo Kim
- Center of Intelligent Microprocess of Pharmaceutical Synthesis
- Department of Chemical Engineering
- Pohang University of Science and Technology (POSTECH)
- Pohang
- 37673 Korea
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23
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Faarasse S, El Kazzouli S, Suzenet F, Guillaumet G. Palladium-Catalyzed C3-Arylations of 1H- and 2H-Pyrazolo[4,3-b]pyridines on Water. J Org Chem 2018; 83:12847-12854. [PMID: 30240222 DOI: 10.1021/acs.joc.8b01728] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Soukaina Faarasse
- Euromed Faculty of Engineering, Euromed University of Fes (UEMF), Route de Meknès, 30000 Fès, Morocco
- Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS 7311, BP 6759, 45067 Orléans Cedex 2, France
| | - Saïd El Kazzouli
- Euromed Faculty of Engineering, Euromed University of Fes (UEMF), Route de Meknès, 30000 Fès, Morocco
| | - Franck Suzenet
- Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS 7311, BP 6759, 45067 Orléans Cedex 2, France
| | - Gérald Guillaumet
- Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS 7311, BP 6759, 45067 Orléans Cedex 2, France
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24
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Tang M, Chu B, Chang X. Direct N-Alkylation and Kemp Elimination Reactions of 1-Sulfonyl-1H-Indazoles. Chem Asian J 2018; 13:2109-2116. [PMID: 30020558 DOI: 10.1002/asia.201800741] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 06/05/2018] [Indexed: 02/28/2024]
Abstract
The reactions of 1-sulfonyl-1H-indazoles under basic conditions are discussed, and the direct N-alkylation and Kemp elimination reactions of these compounds are reported. A series of 2-(p-tosylamino)benzonitriles and N-alkyl indazoles were prepared in good yields. Moreover, the 2-(p-tosylamino)benzonitriles could be transformed into a diverse range of important derivatives in a one-pot reaction. This method was successfully applied to the total syntheses of quindolinone and cryptolepinone; quindolinone was prepared in a one-pot reaction from 1-sulfonyl-1H-indazole.
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Affiliation(s)
- Meng Tang
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Bingjie Chu
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Xiaowei Chang
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, P. R. China
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25
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Bogonda G, Kim HY, Oh K. Direct Acyl Radical Addition to 2H-Indazoles Using Ag-Catalyzed Decarboxylative Cross-Coupling of α-Keto Acids. Org Lett 2018; 20:2711-2715. [DOI: 10.1021/acs.orglett.8b00920] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ganganna Bogonda
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Hun Young Kim
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Kyungsoo Oh
- Center for Metareceptome Research, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
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26
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Synthesis and Biological Evaluation of 2H-Indazole Derivatives: Towards Antimicrobial and Anti-Inflammatory Dual Agents. Molecules 2017; 22:molecules22111864. [PMID: 29088121 PMCID: PMC6150295 DOI: 10.3390/molecules22111864] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 10/27/2017] [Accepted: 10/27/2017] [Indexed: 01/31/2023] Open
Abstract
Indazole is considered a very important scaffold in medicinal chemistry. It is commonly found in compounds with diverse biological activities, e.g., antimicrobial and anti-inflammatory agents. Considering that infectious diseases are associated to an inflammatory response, we designed a set of 2H-indazole derivatives by hybridization of cyclic systems commonly found in antimicrobial and anti-inflammatory compounds. The derivatives were synthesized and tested against selected intestinal and vaginal pathogens, including the protozoa Giardia intestinalis, Entamoeba histolytica, and Trichomonas vaginalis; the bacteria Escherichia coli and Salmonella enterica serovar Typhi; and the yeasts Candida albicans and Candida glabrata. Biological evaluations revealed that synthesized compounds have antiprotozoal activity and, in most cases, are more potent than the reference drug metronidazole, e.g., compound 18 is 12.8 times more active than metronidazole against G. intestinalis. Furthermore, two 2,3-diphenyl-2H-indazole derivatives (18 and 23) showed in vitro growth inhibition against Candida albicans and Candida glabrata. In addition to their antimicrobial activity, the anti-inflammatory potential for selected compounds was evaluated in silico and in vitro against human cyclooxygenase-2 (COX-2). The results showed that compounds 18, 21, 23, and 26 display in vitro inhibitory activity against COX-2, whereas docking calculations suggest a similar binding mode as compared to rofecoxib, the crystallographic reference.
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27
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Maddala S, Mallick S, Venkatakrishnan P. Metal-Free Oxidative C–C Coupling of Arylamines Using a Quinone-Based Organic Oxidant. J Org Chem 2017; 82:8958-8972. [DOI: 10.1021/acs.joc.7b01377] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sudhakar Maddala
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
| | - Sudesh Mallick
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
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28
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Yamaguchi J, Itami K. Toward an Ideal Synthesis of (Bio)molecules through Direct Arene Assembling Reactions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20160365] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Junichiro Yamaguchi
- Department of Applied Chemistry, Waseda University, Shinjuku, Tokyo 169-8555
| | - Kenichiro Itami
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602
- JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya, Aichi 464-8602
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29
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Zhang Z, Huang Y, Huang G, Zhang G, Liu Q. [Bis-(trifluoroacetoxy)iodo]benzene-Mediated Oxidative Direct Amination C-N Bond Formation: Synthesis of 1H
-Indazoles. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2839] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zhiguo Zhang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang Henan 453007 People's Republic of China
| | - Yuanyuan Huang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang Henan 453007 People's Republic of China
| | - Guoqing Huang
- Handan Purification Equipment Research Institute; Handan Hebei 056027 People's Republic of China
| | - Guisheng Zhang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang Henan 453007 People's Republic of China
| | - Qingfeng Liu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering; Henan Normal University; Xinxiang Henan 453007 People's Republic of China
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30
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Belkessam F, Aidene M, Soulé JF, Doucet H. Direct C3-Arylation of 2 H
-Indazole Derivatives with Aryl Bromides by using Low Loading of a Phosphine-free Palladium Catalyst. ChemCatChem 2017. [DOI: 10.1002/cctc.201601420] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fatma Belkessam
- Département de Chimie; Tizi Ouzou University, BP 17 RP 15000; Tizi-Ouzou Algeria
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes, “Organométalliques: Matériaux et Catalyse”; Campus de Beaulieu 35042 Rennes France
| | - Mohand Aidene
- Département de Chimie; Tizi Ouzou University, BP 17 RP 15000; Tizi-Ouzou Algeria
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes, “Organométalliques: Matériaux et Catalyse”; Campus de Beaulieu 35042 Rennes France
| | - Jean-François Soulé
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes, “Organométalliques: Matériaux et Catalyse”; Campus de Beaulieu 35042 Rennes France
| | - Henri Doucet
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes, “Organométalliques: Matériaux et Catalyse”; Campus de Beaulieu 35042 Rennes France
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31
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Chen FM, Huang FD, Yao XY, Li T, Liu FS. Direct C–H heteroarylation by an acenaphthyl-based α-diimine palladium complex: improvement of the reaction efficiency for bi(hetero)aryls under aerobic conditions. Org Chem Front 2017. [DOI: 10.1039/c7qo00562h] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A bulky ancenaphthyl skeleton-based α-diimine palladium complex has been developed, which exhibited high reactivity for direct heteroarylation of heteroaryl bromides under aerobic conditions with a broad substrate scope.
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Affiliation(s)
- Fu-Min Chen
- School of Chemistry and Chemical Engineering
- Guangdong Cosmetics Engineering and Technology Research Center
- Guangdong Pharmaceutical University
- Zhongshan
- China
| | - Fei-Dong Huang
- School of Chemistry and Chemical Engineering
- Guangdong Cosmetics Engineering and Technology Research Center
- Guangdong Pharmaceutical University
- Zhongshan
- China
| | - Xue-Yi Yao
- School of Chemistry and Chemical Engineering
- Guangdong Cosmetics Engineering and Technology Research Center
- Guangdong Pharmaceutical University
- Zhongshan
- China
| | - Tian Li
- School of Chemistry and Chemical Engineering
- Guangdong Cosmetics Engineering and Technology Research Center
- Guangdong Pharmaceutical University
- Zhongshan
- China
| | - Feng-Shou Liu
- School of Chemistry and Chemical Engineering
- Guangdong Cosmetics Engineering and Technology Research Center
- Guangdong Pharmaceutical University
- Zhongshan
- China
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32
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Functionalization of indazoles by means of transition metal-catalyzed cross-coupling reactions. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.08.031] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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33
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Basu K, Poirier M, Ruck RT. Solution to the C3–Arylation of Indazoles: Development of a Scalable Method. Org Lett 2016; 18:3218-21. [DOI: 10.1021/acs.orglett.6b01456] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kallol Basu
- Department of Process & Analytical Chemistry, Merck Research Laboratories, Rahway, New Jersey 07065, United States
| | - Marc Poirier
- Department of Process & Analytical Chemistry, Merck Research Laboratories, Rahway, New Jersey 07065, United States
| | - Rebecca T. Ruck
- Department of Process & Analytical Chemistry, Merck Research Laboratories, Rahway, New Jersey 07065, United States
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34
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Gök Y, Akkoç S, Erdoğan H, Albayrak S. In vitro antimicrobial studies of new benzimidazolium salts and silver N-heterocyclic carbene complexes. J Enzyme Inhib Med Chem 2016; 31:1322-7. [DOI: 10.3109/14756366.2015.1132210] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Yetkin Gök
- Department of Chemistry, Faculty of Arts and Sciences, Inönü University, Malatya, Turkey,
| | | | - Hülya Erdoğan
- Department of Chemistry, Faculty of Arts and Sciences, Inönü University, Malatya, Turkey,
| | - Sevil Albayrak
- Department of Biology, Erciyes University, Kayseri, Turkey
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35
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Ouyang JS, Li YF, Shen DS, Ke Z, Liu FS. Bulky α-diimine palladium complexes: highly efficient for direct C–H bond arylation of heteroarenes under aerobic conditions. Dalton Trans 2016; 45:14919-27. [DOI: 10.1039/c6dt02544g] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Through the strategy to enhance the bulkiness on both the backbone and the N-aryl moieties, we designed and synthesized a type of bulky α-diimine palladium complex (i.e., {[Ar–NC(R)–C(R)N–Ar]PdCl2, (Ar = 2-benzhydryl-4,6-dimethylphenyl)}, C1, R = H; C2, R = An; C3, R = Ph).
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Affiliation(s)
- Jia-Sheng Ouyang
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Zhongshan
- China
| | - Yan-Fang Li
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Zhongshan
- China
| | - Dong-Sheng Shen
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Zhongshan
- China
| | - Zhuofeng Ke
- School of Materials Science and Engineering
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- Sun Yat-sen University
- Guangzhou 510275
- China
| | - Feng-Shou Liu
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Zhongshan
- China
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36
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Oh KH, Kim SM, Lee MJ, Park JK. Palladium-Catalyzed Direct Arylations of 1,2-Azolo[1,5-a]pyridines using Copper(I) Chloride as a Lewis Acid Activator and the Synthesis of 2,6-Disubstituted Pyridines. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500726] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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37
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Luo BT, Liu H, Lin ZJ, Jiang J, Shen DS, Liu RZ, Ke Z, Liu FS. Aerobic and Efficient Direct Arylation of Five-Membered Heteroarenes and Their Benzocondensed Derivatives with Aryl Bromides by Bulky α-Hydroxyimine Palladium Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00181] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Bao-Tian Luo
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, People’s Republic of China
| | - Huan Liu
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, People’s Republic of China
| | - Zhi-Jie Lin
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, People’s Republic of China
| | - Jingxing Jiang
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment
and Energy Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China
| | - Dong-Sheng Shen
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, People’s Republic of China
| | - Rui-Zhi Liu
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, People’s Republic of China
| | - Zhuofeng Ke
- MOE
Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment
and Energy Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China
| | - Feng-Shou Liu
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, Guangdong 528458, People’s Republic of China
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38
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Naas M, El Kazzouli S, Essassi EM, Bousmina M, Guillaumet G. Palladium-Catalyzed Oxidative Direct C3- and C7-Alkenylations of Indazoles: Application to the Synthesis of Gamendazole. Org Lett 2015; 17:4320-3. [DOI: 10.1021/acs.orglett.5b02136] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mohammed Naas
- Institut
de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS, 7311, BP 6759, Orléans Cedex 2 45067, France
- Faculté
des Sciences, Université Mohammed V de Rabat, BP 1014, Avenue Ibn Batouta, 10000 Rabat, Morocco
| | - Saïd El Kazzouli
- Euromed
Research Institute, Engineering Division, Euro-Mediterranean University of Fes, Fès-Shore, Route de Sidi Hrazem, 30070 Fès, Morocco
| | - El Mokhtar Essassi
- Faculté
des Sciences, Université Mohammed V de Rabat, BP 1014, Avenue Ibn Batouta, 10000 Rabat, Morocco
| | - Mosto Bousmina
- Euromed
Research Institute, Engineering Division, Euro-Mediterranean University of Fes, Fès-Shore, Route de Sidi Hrazem, 30070 Fès, Morocco
| | - Gérald Guillaumet
- Institut
de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS, 7311, BP 6759, Orléans Cedex 2 45067, France
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39
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Fuse S, Morita T, Johmoto K, Uekusa H, Tanaka H. Directing/Protecting-Group-Free Synthesis of Tetraaryl-Substituted Pyrazoles through Four Direct Arylations on an Unsubstituted Pyrazole Scaffold. Chemistry 2015; 21:14370-5. [DOI: 10.1002/chem.201502399] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Indexed: 11/08/2022]
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40
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Efficient synthesis of 3-aryl-1H-indazol-5-amine by Pd-catalyzed Suzuki–Miyaura cross-coupling reaction under microwave-assisted conditions. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Yu J, Lim JW, Kim SY, Kim J, Kim JN. An efficient transition-metal-free synthesis of 1H-indazoles from arylhydrazones with montmorillonite K-10 under O2 atmosphere. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.01.183] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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42
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El Kazzouli S, Koubachi J, El Brahmi N, Guillaumet G. Advances in direct C–H arylation of 5,5- 6,5- and 6,6-fused-heterocycles containing heteroatoms (N, O, S). RSC Adv 2015. [DOI: 10.1039/c4ra15384g] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This report aims to review the advances made in C–H arylation of 5,6, 6,6 and 5,5 fused-heterocyclic systems.
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Affiliation(s)
- Saïd El Kazzouli
- Euromed Research Institute
- Engineering Division
- Euro-Mediterranean University of Fes (UEMF)
- 30070 Fès
- Morocco
| | - Jamal Koubachi
- Faculté Polydisciplinaire de Taroudant
- Université Ibn Zohr d'Agadir
- 83000 Taroudant
- Morocco
| | - Nabil El Brahmi
- Euromed Research Institute
- Engineering Division
- Euro-Mediterranean University of Fes (UEMF)
- 30070 Fès
- Morocco
| | - Gérald Guillaumet
- Institut de Chimie Organique et Analytique (ICOA)
- Université d'Orleans
- UMR CNRS 7311
- 45067 Orléans Cedex 2
- France
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43
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Kondo H, Yu F, Yamaguchi J, Liu G, Itami K. Branch-Selective Allylic C–H Carboxylation of Terminal Alkenes by Pd/sox Catalyst. Org Lett 2014; 16:4212-5. [DOI: 10.1021/ol5019135] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroki Kondo
- Department
of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Feng Yu
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Junichiro Yamaguchi
- Department
of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Guosheng Liu
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Kenichiro Itami
- Department
of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- Institute
of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
- JST
ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan
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44
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Naas M, El Kazzouli S, Essassi EM, Bousmina M, Guillaumet G. Palladium-Catalyzed Direct C7-Arylation of Substituted Indazoles. J Org Chem 2014; 79:7286-93. [DOI: 10.1021/jo500876q] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Mohammed Naas
- Institut
de Chimie Organique et Analytique (ICOA), Université d’Orleans UMR CNRS 7311, BP 6759, 45067 Orléans
Cedex 2, France
- Faculté
des Sciences, Université Mohammed V de Rabat, BP 1014, Avenue Ibn Batouta, Rabat, Morocco
| | - Saı̈d El Kazzouli
- Euro-Mediterranean University of Fez, Fès-Shore,
Route de Sidi Hrazem, 30070 Fès, Morocco
| | - El Mokhtar Essassi
- Faculté
des Sciences, Université Mohammed V de Rabat, BP 1014, Avenue Ibn Batouta, Rabat, Morocco
| | - Mosto Bousmina
- Euro-Mediterranean University of Fez, Fès-Shore,
Route de Sidi Hrazem, 30070 Fès, Morocco
- Hassan II Academy of Science and Technology, Avenue Mohammed VI, 10222 Rabat, Morocco
| | - Gérald Guillaumet
- Institut
de Chimie Organique et Analytique (ICOA), Université d’Orleans UMR CNRS 7311, BP 6759, 45067 Orléans
Cedex 2, France
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45
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46
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Zhang H. Highly regioselective ruthenium-catalyzed direct arylation of thiazolo[3,2-b]-1,2,4-triazoles with aryl iodides and aryl bromides via C–H bond activation. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.12.055] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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47
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Tang HT, Zhou YB, Zhu Y, Sun HC, Lin M, Zhan ZP. Base-Catalyzed NN Bond Cleavage of Hydrazones: Synthesis of α-Amino Ketones. Chem Asian J 2014; 9:1278-81. [DOI: 10.1002/asia.201400037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 01/17/2014] [Indexed: 12/12/2022]
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48
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Hu J, Xu H, Nie P, Xie X, Nie Z, Rao Y. Synthesis of Indazoles and Azaindazoles by Intramolecular Aerobic Oxidative CN Coupling under Transition-Metal-Free Conditions. Chemistry 2014; 20:3932-8. [DOI: 10.1002/chem.201304923] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 01/08/2014] [Indexed: 01/08/2023]
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49
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Komeyama K, Nagao Y, Abe M, Takaki K. Scope and Limitation for FeSO4-Mediated Direct Arylation of Heteroarenes with Arylboronic Acids and Its Synthetic Applications. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20130166] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kimihiro Komeyama
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University
| | - Yuya Nagao
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University
| | - Manabu Abe
- Department of Chemistry, Graduate School of Science, Hiroshima University
| | - Ken Takaki
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University
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50
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Egan BA, Burton PM. Synthesis of 3-aryl-1H-indazoles via iridium-catalysed C–H borylation and Suzuki–Miyaura coupling. RSC Adv 2014. [DOI: 10.1039/c4ra04235b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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