1
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Shao A, Li Y, Ding Y, Li Y, Wu S, Jiang Y, Dong M, Wu H, Chen S. Photoredox-Cobaloxime Catalysis for Selective Oxidative Dehydrogenative [4+2] Annulation of Imidazo-Fused Heterocycles with Alkenes. Org Lett 2024; 26:2529-2534. [PMID: 38513218 DOI: 10.1021/acs.orglett.4c00159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
A selective oxidative [4+2] annulation of alkenes with imidazo-fused heterocycles has been developed by using the synergistic combination of photoredox and cobaloxime catalysts. It allows facile access to various imidazole-fused polyaromatic scaffolds accompanied by H2 evolution. This protocol features high regioselectivity as well as a broad substrate scope. Detailed mechanistic studies indicate that twice the electron/H transfer processes facilitated by this catalytic system achieve the annulation π-extension of imidazo-fused heterocycles with alkenes.
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Affiliation(s)
- Ailong Shao
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Yuanyuan Li
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Yuxue Ding
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Yahui Li
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Shulian Wu
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Yuan Jiang
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Min Dong
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Hai Wu
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
| | - Shuisheng Chen
- School of Chemistry and Material Engineering, Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
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2
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Feng W, Chen Z, Xue F, Zhang Z, Wang B, Zhang Y, Xia Y, Jin W, Wu S, Liu C. Visible-Light-Promoted and EDA Complex-Driven [4 + 2] Annulation for the Construction of Naphtho[1',2':4,5]imidazo[1,2- a]pyridines. Org Lett 2024. [PMID: 38507739 DOI: 10.1021/acs.orglett.4c00233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
A green visible-light-promoted and electron donor-acceptor (EDA) complex-driven synthetic strategy for the construction of value-added naphtho[1',2':4,5]imidazo[1,2-a]pyridines from 2-arylimidazo[1,2-a]pyridines with Z-α-bromocinnamaldehydes has been accomplished under photocatalyst- and transition-metal-free conditions. This efficient annulation approach provides a new and straightforward pathway for the annulative π-extension of imidazo[1,2-a]pyridine-based aromatics. Moreover, the sustainable methodology exhibits simple operation, a wide range of substrates, benign conditions, and good functional group compatibility.
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Affiliation(s)
- Wanting Feng
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, P. R. China
| | - Ziren Chen
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, P. R. China
| | - Fei Xue
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, P. R. China
| | - Zuozhi Zhang
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, P. R. China
| | - Bin Wang
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, P. R. China
| | - Yonghong Zhang
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, P. R. China
| | - Yu Xia
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, P. R. China
| | - Weiwei Jin
- Key Laboratory of Specialty Agri-Product Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou 310018, P. R. China
| | - Shaofeng Wu
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, P. R. China
| | - Chenjiang Liu
- Urumqi Key Laboratory of Green Catalysis and Synthesis Technology, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, P. R. China
- Institute of Materia Medica, Xinjiang University, Urumqi 830017, P. R. China
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3
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Tali JA, Kumar G, Sharma BK, Rasool Y, Sharma Y, Shankar R. Synthesis and site selective C-H functionalization of imidazo-[1,2- a]pyridines. Org Biomol Chem 2023; 21:7267-7289. [PMID: 37655687 DOI: 10.1039/d3ob00849e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Imidazo[1,2-a]pyridine has attracted much interest in drug development because of its potent medicinal properties, therefore the discovery of novel methods for its synthesis and functionalization continues to be an exciting area of research. Although transition metal catalysis has fuelled the most significant developments, extremely beneficial metal-free approaches have also been identified. Even though pertinent reviews focused on imidazo[1,2-a]pyridine synthesis, properties (physicochemical and medicinal), and functionalization at the C3 position have been published, none of these reviews has focused on the outcomes obtained in the field of global ring functionalization. We wish here to describe a brief synthesis and an overview of all the functionalization reactions at each carbon atom, viz, C2, C3, C5, C6, C7 and C8 of this scaffold, divided into sections based on site-selectivity and the type of functionalization methods used.
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Affiliation(s)
- Javeed Ahmad Tali
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Gulshan Kumar
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Bhupesh Kumar Sharma
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Younis Rasool
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Yashika Sharma
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
| | - Ravi Shankar
- Natural Product and Medicinal Chemistry Division (NPMC), CSIR-Indian Institute of Integrative Medicine, Jammu-180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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4
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Meena N, Shinde VN, Sonam, Swami PN, Rangan K, Kumar A. Catalyst-Controlled Regiodivergent Oxidative Annulation of 2-Arylimidazo[1,2- a]pyridines with Cinnamaldehyde Derivatives for Construction of Fused N-Heterocyclic Frameworks. J Org Chem 2023; 88:12902-12913. [PMID: 37672762 DOI: 10.1021/acs.joc.3c00717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Catalyst-dependent regioselective oxidative annulation of 2-arylimidazo[1,2-a]pyridines with cinnamaldehyde derivatives to construct fused N-heterocyclic frameworks has been described. The annulation reaction afforded 5-arylnaphtho[1',2':4,5]imidazo[1,2-a]pyridine-6-carbaldehydes in the presence of [RhCp*Cl2]2 as catalyst while 1,7-diarylimidazo[5,1,2-cd]indolizine-6-carbaldehydes were obtained using Pd(OAc)2 as catalyst. The reaction produced annulated products in good yields and exhibited broad substrate scope and excellent functional group tolerance. The method provides two different isomeric annulated products bearing an aldehyde functionality which can be elaborated into an array of functionalities leading to valuable compounds.
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Affiliation(s)
- Neha Meena
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
| | - Vikki N Shinde
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
| | - Sonam
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
| | - Prakash N Swami
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Telangana 500078, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
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5
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Thavaselvan S, Parthasarathy K. Nickel-catalyzed [2 + 2 + 2] benzannulation of alkynes: a new route to the synthesis of highly substituted naphthalenes. Org Biomol Chem 2022; 20:4309-4313. [PMID: 35583045 DOI: 10.1039/d2ob00513a] [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
The Ni(II)-catalyzed aromatic homologation of various directing groups with alkynes to afford highly substituted naphthalene products via C-X bond cleavage followed by alkyne insertion and C-H activation is described. This reaction proceeded with a wide range of directing groups such as pyrazoles, imidazopyridines, benzoimidazothiazoles, thiazoles and triazoles with alkynes to afford highly substituted naphthalenes in moderate to good yields. This transformation is promoted by a simple, straightforward combination of a Ni(II)-complex, Zn dust and a base.
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Affiliation(s)
- Sampath Thavaselvan
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai-600 025, Tamil Nadu, India.
| | - Kanniyappan Parthasarathy
- Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai-600 025, Tamil Nadu, India.
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6
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Semwal R, Badhani G, Adimurthy S. Pd-catalyzed annulation of imidazo[1,2- a]pyridines with coumarins and indoles: synthesis of benzofuran and indole fused heterocycles. Chem Commun (Camb) 2022; 58:1585-1588. [PMID: 35018924 DOI: 10.1039/d1cc06803b] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium-catalyzed annulation of imidazo[1,2-a]pyridines with coumarins provided benzofuran fused transannulated products in good to excellent yields via a decarbonylative approach, while imidazo[1,2-a]pyridines with N-methyl indoles in the presence of palladium and base yielded conjugated imidazopyridine fused indole derivatives. Additional experiments revealed that the presence of the phenyl ring at the C-2 position of imidazo[1,2-a]pyridines is essential for the annulation than the alkyl groups. Both transformations follow the ionic mechanism by Pd-catalyzed double C-H bond activation. All the annulated products were shown to exhibit high fluorescence characteristics and their photophysical properties were evaluated.
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Affiliation(s)
- Rashmi Semwal
- Academy of Scientific & Innovative Research, Ghaziabad; CSIR-Central Salt & Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, Gujarat, India.
| | - Gaurav Badhani
- Academy of Scientific & Innovative Research, Ghaziabad; CSIR-Central Salt & Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, Gujarat, India.
| | - Subbarayappa Adimurthy
- Academy of Scientific & Innovative Research, Ghaziabad; CSIR-Central Salt & Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, Gujarat, India.
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7
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Ghosh S, Laru S, Hajra A. Ortho C-H Functionalization of 2-Arylimidazo[1,2-a]pyridines. CHEM REC 2021; 22:e202100240. [PMID: 34757691 DOI: 10.1002/tcr.202100240] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/19/2021] [Accepted: 10/25/2021] [Indexed: 11/09/2022]
Abstract
C-H activation and functionalization is quite promising in recent days as the strategy offers a go-to general method for different bond formations and hence grants synthetic versatility. At the same time, imidazopyridine, a fused bicycle of imidazole moiety with pyridine ring, has a profound impact due to its ubiquitous and prodigious application in medicinal as well as material chemistry. The presence of N-1 atom in 2-arylImidazo[1,2-a]pyridine facilitates the coordination with metal catalysts leading to the formation of ortho-substituted products. This review summarizes all the articles on ortho C-H functionalization of 2-arylImidazo[1,2-a]pyridines published till August 2021.
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Affiliation(s)
- Sumit Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
| | - Sudip Laru
- 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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8
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Rao MLN, Islam SS. Copper-catalyzed synthesis of 1-(2-benzofuryl)-N-heteroarenes from o-hydroxy- gem-(dibromovinyl)benzenes and N-heteroarenes. Org Biomol Chem 2021; 19:9076-9080. [PMID: 34622915 DOI: 10.1039/d1ob01765a] [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
An efficient method for the synthesis of 1-(2-benzofuryl)-N-heteroarenes is developed from o-hydroxy-gem-(dibromovinyl)benzenes and N-heteroarenes under copper-catalyzed tandem reaction conditions. This methodology displayed a broad substrate scope and high yields in the preparation of a variety of 1-(2-benzofuryl)-N-heteroarenes. Further, 1-(2-benzofuryl)-N-heteroarenes were also applied in the synthesis of polycyclic benzofuro-indolo-pyridine scaffolds under palladium-catalyzed dehydrogenative coupling conditions. Overall, the present tandem approach is general, synthetically advantageous and avoids air-sensitive reagents.
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Affiliation(s)
- Maddali L N Rao
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208 016, India.
| | - Sk Shamim Islam
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208 016, India.
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9
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Kurian J, Shurooque KS, Ramkumar V, Chakkumkumarath L, Kannoth M M. Delocalization Effects and Tunable Emission in a Class of Charged Cyclazines with Nitrogen on the Periphery. Org Lett 2021; 23:3354-3358. [PMID: 33904737 DOI: 10.1021/acs.orglett.1c00827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new class of cyclazine analogues with periphery reminiscent of an aza[10]annulene framework, tethered internally by an sp3 carbon, is presented. In depth structure analysis based on NMR and X-ray diffraction data gave a deeper insight into the effect of electron delocalization on their structure and properties. A characteristic change in chemical shift positions suggested an aromatic ring current in these systems. Attractive emission properties in solid and solution states involving charge transfer is another highlight.
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Affiliation(s)
- Jais Kurian
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Kanneth S Shurooque
- Department of Chemistry, National Institute of Technology Calicut, Kerala 673 601, India
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10
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Babaev EV, Shadrin IA. Indolizines and Their Hetero/Benzo Derivatives in Reactions of [8+2] Cycloaddition. Molecules 2021; 26:molecules26072050. [PMID: 33916655 PMCID: PMC8038407 DOI: 10.3390/molecules26072050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 03/30/2021] [Accepted: 03/30/2021] [Indexed: 11/16/2022] Open
Abstract
Peculiarities of [8+2] cycloaddition of acetylenes to indolizines are reviewed. Especially mentioned are indolizines with leaving groups at positions 3 and 5. Cycloaddition to aza- and benzo derivatives are reviewed, as well as 1,10-cyclizations and processes leading to cyclazines where indolizines are intermediates. Mechanistic features (adducts and cycloadducts) and theoretical aspects (one- or two-steps mechanism) are reviewed.
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Affiliation(s)
- Eugene V. Babaev
- Chemistry Department, Moscow State University, Leninskie Gory, 1 Str. 3, 119899 Moscow, Russia;
- Higher School of Economics, National Research University, 7 Vavilova Str., 117312 Moscow, Russia
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Ave., 119991 Moscow, Russia
- Correspondence: ; Tel.: +7-985-997-94-75
| | - Ivan A. Shadrin
- Chemistry Department, Moscow State University, Leninskie Gory, 1 Str. 3, 119899 Moscow, Russia;
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11
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Konwar D, Bora U. Recent Developments in Transition‐Metal‐Catalyzed Regioselective Functionalization of Imidazo[1, 2‐
a
]pyridine. ChemistrySelect 2021. [DOI: 10.1002/slct.202100144] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Dipika Konwar
- Department of Chemical Sciences Tezpur University, Napaam, Tezpur PIN 784028 Assam India
| | - Utpal Bora
- Department of Chemical Sciences Tezpur University, Napaam, Tezpur PIN 784028 Assam India
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12
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Shinde VN, Rangan K, Kumar D, Kumar A. Rhodium(III)-Catalyzed Dehydrogenative Annulation and Spirocyclization of 2-Arylindoles and 2-(1H-Pyrazol-1-yl)-1H-indoles with Maleimides: A Facile Access to Isogranulatimide Alkaloid Analogues. J Org Chem 2021; 86:2328-2338. [DOI: 10.1021/acs.joc.0c02467] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Vikki N. Shinde
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Telangana 500078, India
| | - Dalip Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan 333031, India
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13
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Tanbakouchian A, Kianmehr E. Palladium-catalyzed regioselective direct C–H bond alkoxycarbonylation of 2-arylimidazo[1,2- a]pyridines. NEW J CHEM 2021. [DOI: 10.1039/d1nj00605c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A palladium catalyzed method for regioselective alkoxycarbonylation of imidazo[1,2-a]pyridines using W(CO)6, as the CO source, and alcohols has been reported.
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Affiliation(s)
| | - Ebrahim Kianmehr
- School of Chemistry
- College of Science
- University of Tehran
- Tehran
- Iran
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14
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Chen X, Sun P, Mo B, Chen C, Peng J. Palladium-Catalyzed Synthesis of Fluorescent Benzo[4,5]imidazo[1,2-a]pyridines through Annulation Reaction of Benzimidazoles and Alkynyl Bromides with Internal Alkynes. J Org Chem 2021; 86:352-366. [PMID: 33251795 DOI: 10.1021/acs.joc.0c02126] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
An efficient synthesis of fused azapolycycles based on (benz)imidazole and pyridine scaffolds has been developed. In all cases, the first nucleophilic addition of (benz)imidazoles to alkynyl bromides in tert-pentyl alcohol can proceed in a stereoselective manner to provide (Z)-N-(1-bromo-1-alken-2-yl)benzimidazoles at 110 °C. Sequentially, these adducts containing alkenyl bromide can undergo Pd-catalyzed intermolecular C-H annulation in the presence of internal alkynes in dimethylacetamide, affording fluorescent (benz)imidazole-fused pyridines in good to high yields. These compounds generally exhibit blue or green fluorescences (454-503 nm for solution states and 472-506 nm for solid states), and the fluorescence quantum yields remained in 0.19-0.89 and 0.02-0.74 for solution and solid states, respectively.
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Affiliation(s)
- Xin Chen
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.,Material Science and Engineering College, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China
| | - Peng Sun
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.,Material Science and Engineering College, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China
| | - Baichuan Mo
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.,Material Science and Engineering College, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China
| | - Chunxia Chen
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.,Material Science and Engineering College, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China
| | - Jinsong Peng
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China
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15
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Shinde VN, Kanchan Roy T, Jaspal S, Nipate DS, Meena N, Rangan K, Kumar D, Kumar A. Rhodium(III)‐Catalyzed Annulation of 2‐Arylimidazo[1,2‐
a
]pyridines with Maleimides: Synthesis of 1
H
‐Benzo[
e
]pyrido[1′,2′:1,2]imidazo[4,5‐
g
]isoindole‐1,3(2
H
)‐Diones and their Photophysical Studies. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000960] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Vikki N. Shinde
- Department of Chemistry Birla Institute of Technology and Science Pilani, Pilani Campus Pilani Rajasthan 333031 India
| | - Tapta Kanchan Roy
- Department of Chemistry and Chemical Sciences Central University of Jammu Rahya Suchani J&K 181143 India
| | - Sonam Jaspal
- Department of Chemistry Birla Institute of Technology and Science Pilani, Pilani Campus Pilani Rajasthan 333031 India
| | - Dhananjay S. Nipate
- Department of Chemistry Birla Institute of Technology and Science Pilani, Pilani Campus Pilani Rajasthan 333031 India
| | - Neha Meena
- Department of Chemistry Birla Institute of Technology and Science Pilani, Pilani Campus Pilani Rajasthan 333031 India
| | - Krishnan Rangan
- Department of Chemistry Birla Institute of Technology and Science Pilani, Hyderbad Campus Hyderabad Telangana 500078 India
| | - Dalip Kumar
- Department of Chemistry Birla Institute of Technology and Science Pilani, Pilani Campus Pilani Rajasthan 333031 India
| | - Anil Kumar
- Department of Chemistry Birla Institute of Technology and Science Pilani, Pilani Campus Pilani Rajasthan 333031 India
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16
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Starikov AS, Kalashnikov VV, Tarakanov PA, Simakov AO, Simonov SV, Tkachev VV, Yarkov AV, Kazachenko VP, Chernyak AV, Zhurkin FE, Tomilova LG, Pushkarev VE. Synthesis of 1,2‐Dicyano‐3‐arylcycl[3.2.2]azines – First 1,2‐Dicarbonitriles Based on Cyclazine Heterocycle. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000958] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Andrei S. Starikov
- Institute of Physiologically Active Compounds Russian Academy of Sciences 1 Severny proezd 142432 Chernogolovka Moscow Region Russian Federation
| | - Valery V. Kalashnikov
- Institute of Physiologically Active Compounds Russian Academy of Sciences 1 Severny proezd 142432 Chernogolovka Moscow Region Russian Federation
| | - Pavel A. Tarakanov
- Institute of Physiologically Active Compounds Russian Academy of Sciences 1 Severny proezd 142432 Chernogolovka Moscow Region Russian Federation
| | - Anton O. Simakov
- Institute of Physiologically Active Compounds Russian Academy of Sciences 1 Severny proezd 142432 Chernogolovka Moscow Region Russian Federation
| | - Sergey V. Simonov
- Institute of Solid State Physics Russian Academy of Sciences 2 Academician Ossipyan street 142432 Chernogolovka Moscow Region Russian Federation
| | - Valery V. Tkachev
- Institute of Physiologically Active Compounds Russian Academy of Sciences 1 Severny proezd 142432 Chernogolovka Moscow Region Russian Federation
- Institute of Problems of Chemical Physics Russian Academy of Sciences 1 Academician Semenov avenue 142432 Chernogolovka Moscow Region Russian Federation
| | - Alexander V. Yarkov
- Institute of Physiologically Active Compounds Russian Academy of Sciences 1 Severny proezd 142432 Chernogolovka Moscow Region Russian Federation
| | - Vladimir P. Kazachenko
- Institute of Physiologically Active Compounds Russian Academy of Sciences 1 Severny proezd 142432 Chernogolovka Moscow Region Russian Federation
| | - Alexander V. Chernyak
- Institute of Problems of Chemical Physics Russian Academy of Sciences 1 Academician Semenov avenue 142432 Chernogolovka Moscow Region Russian Federation
| | - Fedor E. Zhurkin
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques UMR CNRS 8601 Université de Paris 45 rue des Saints‐Pères 75006 Paris France
| | - Larisa G. Tomilova
- Institute of Physiologically Active Compounds Russian Academy of Sciences 1 Severny proezd 142432 Chernogolovka Moscow Region Russian Federation
- Department of Chemistry M.V. Lomonosov Moscow State University 1 Leninskie Gory 119991 Moscow Russian Federation
| | - Victor E. Pushkarev
- Institute of Physiologically Active Compounds Russian Academy of Sciences 1 Severny proezd 142432 Chernogolovka Moscow Region Russian Federation
- Department of Chemistry M.V. Lomonosov Moscow State University 1 Leninskie Gory 119991 Moscow Russian Federation
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17
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Zhang Y, Yu Y, Liang BB, Pei YY, Liu X, Yao HG, Cao H. Synthesis of Pyrrolo[2,1,5- cd]indolizine Rings via Visible-Light-Induced Intermolecular [3+2] Cycloaddition of Indolizines and Alkynes. J Org Chem 2020; 85:10719-10727. [PMID: 32664733 DOI: 10.1021/acs.joc.0c01253] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A range of indolizine smoothly underwent visible-light-induced intermolecular [3+2] annulations with internal alkynes to afford pyrrolo[2,1,5-cd]indolizine in good to excellent yields with high regioselectivity. Through this cascade reaction, a series of fluoroactive fused indolizines with a large π-system were conveniently synthesized. The usage of visible light as energy source with air as a stoichiometric oxidant under simple conditions makes this process attractive and practical.
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Affiliation(s)
- Yu Zhang
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Yue Yu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Bing-Bing Liang
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Yong-Yan Pei
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Xiang Liu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Hua-Gang Yao
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Hua Cao
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
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18
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Meena N, Sharma S, Bhatt R, Shinde VN, Sunda AP, Bhuvanesh N, Kumar A, Joshi H. A selenium-coordinated palladium(ii) trans-dichloride molecular rotor as a catalyst for site-selective annulation of 2-arylimidazo[1,2-a]pyridines. Chem Commun (Camb) 2020; 56:10223-10226. [PMID: 32749408 DOI: 10.1039/d0cc03599h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This report describes the synthesis of a new class of secondary interaction (SeCHCl)-controlled molecular rotor having a Cl-Pd-Cl rotor spoke attached onto a Se-Pd-Se axle. NMR data acquired at various temperatures established ΔG/ΔG values of 15.5 and 17.2 kcal mol-1 for a roughly 4.5 Å-long rotor. The molecular rotor showed excellent catalytic activity with reverse regioselectivity for annulation of 2-arylimidazo[1,2-a]pyridines (yields: ∼53-78%) with only 1.5 mol% catalyst loading.
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Affiliation(s)
- Neha Meena
- Department of Chemistry, Birla Institute of Technology and Science, Pilani Campus, Pilani 333031, India.
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19
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Ghosh K, Nishii Y, Miura M. Oxidative C-H/C-H Annulation of Imidazopyridines and Indazoles through Rhodium-Catalyzed Vinylene Transfer. Org Lett 2020; 22:3547-3550. [PMID: 32282221 DOI: 10.1021/acs.orglett.0c00975] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Transition-metal-catalyzed C-H activation followed by oxidative annulation with alkynes has been an efficient synthetic tool for the assembly of various polyaromatic scaffolds. Despite the substantial progress in this field, it is still a significant challenge to achieve the synthesis of nonsubstituted vinylene-fused compounds. In this contribution, we report a Rh-catalyzed C-H/C-H vinylene cyclization adopting vinylene carbonate as a "vinylene transfer" agent. This protocol achieves the direct annulative π-extension of imidazole- and pyrazole-fused aromatics.
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Affiliation(s)
- Koushik Ghosh
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yuji Nishii
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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20
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Chen G, Li B, Hu B, Zhang X, Fan X. FeCl3-catalyzed C-3 functionalization of imidazo[1,2-a]pyridines with diazoacetonitrile under oxidant- and ligand-free conditions. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151774] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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21
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Li B, Guo C, Shen N, Zhang X, Fan X. Synthesis of maleimide fused benzocarbazoles and imidazo[1,2-a]pyridines via rhodium(iii)-catalyzed [4 + 2] oxidative cycloaddition. Org Chem Front 2020. [DOI: 10.1039/d0qo01109f] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this paper, an efficient and sustainable synthesis of maleimide-fused benzocarbazoles/imidazo[1,2-a]pyridines from the reaction of 2-arylindoles/2-arylimidazo[1,2-a]pyridines with maleimides through oxidative [4 + 2] annulation is presented.
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Affiliation(s)
- Bin Li
- School of Environment
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Chenhao Guo
- School of Environment
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Nana Shen
- School of Environment
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Xinying Zhang
- School of Environment
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Xuesen Fan
- School of Environment
- School of Chemistry and Chemical Engineering
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
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22
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Reddy KN, Chary DY, Sridhar B, Reddy BVS. Rh(III)-Catalyzed Tandem Bicyclization of 2-Arylimidazo[1,2- a]pyridines with Cyclic Enones for the Construction of Bridged Scaffolds. Org Lett 2019; 21:8548-8552. [PMID: 31609121 DOI: 10.1021/acs.orglett.9b03041] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient Rh(III)-catalyzed bicyclization of 2-arylimidazo[1,2-a]pyridine with cyclic enones has been developed for the synthesis of bridged imidazopyridine derivatives in excellent yields up to 95%. The reaction proceeds through a sequential conjugate addition of ortho-C-H bond of aryl group followed by an intramolecular C3-alkylation of imidazopyridine ring in a highly regioselective manner.
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Affiliation(s)
- K Nagarjuna Reddy
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110025 , India
| | - D Yogananda Chary
- Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110025 , India
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23
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Makra Z, Puskás LG, Kanizsai I. A convenient approach for the preparation of imidazo[1,2-a]-fused bicyclic frameworks via IBX/NIS promoted oxidative annulation. Org Biomol Chem 2019; 17:9001-9007. [PMID: 31577318 DOI: 10.1039/c9ob01708a] [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 IBX/NIS-induced intramolecular oxidative annulation of Mannich-type substrates is reported. This metal-free approach involving iodination, NH-oxidation, intramolecular C-N bond formation, and retro-Claisen-Schmidt sequence provides the construction of imidazo[1,2-a]pyridine, imidazo[1,2-a]pyrimidine as well as imidazo[1,2-a]pyrazine frameworks with yields up to 93%. In addition, a sequential one-pot process is also presented.
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Affiliation(s)
- Zsófia Makra
- AVIDIN Ltd., Alsó kikötő sor 11/D, Szeged, H-6726, Hungary.
| | | | - Iván Kanizsai
- AVIDIN Ltd., Alsó kikötő sor 11/D, Szeged, H-6726, Hungary.
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24
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Li B, Shen N, Zhang X, Fan X. Synthesis of fused imidazo[1,2-a]pyridines derivatives through cascade C(sp 2)-H functionalizations. Org Biomol Chem 2019; 17:9140-9150. [PMID: 31588947 DOI: 10.1039/c9ob01744e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient and convenient synthesis of diversely substituted naphtho[1',2':4,5]imidazo[1,2-a]-pyridine derivatives from the cascade reactions of 2-arylimidazo[1,2-a]pyridines with a-diazo carbonyl compounds via Rh(iii)-catalyzed regioselective C(sp2)-H alkylation followed by intramolecular annulation is presented. Interestingly, when simple 2-arylimidazo[1,2-a]pyridines were used as the substrates, 5,6-disubstituted naphtho[1',2':4,5]imidazo[1,2-a]pyridines were efficiently obtained, whereas using 2-arylimidazo[1,2-a]pyridine-3-carbaldehydes as the substrates afforded naphtho[1',2':4,5]imidazo[1,2-a]-pyridine-5-carboxylates as the dominating products. Compared with literature methods for the synthesis of naphtho[1',2':4,5]imidazo[1,2-a]pyridine derivatives, the protocol presented herein has advantages such as easily obtainable substrates, simple operational procedure, high efficiency and excellent regio- and chemoselectivity.
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Affiliation(s)
- Bin Li
- School of Environment, School of Chemistry and Chemical Engineering, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Henan Normal University, Xinxiang, Henan 453007, P. R. China.
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25
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Srinivasulu V, Khanfar M, Omar HA, ElAwady R, Sieburth SM, Sebastian A, Zaher DM, Al-Marzooq F, Hersi F, Al-Tel TH. Sequencing [4 + 1]-Cycloaddition and Aza-Michael Addition Reactions: A Diastereoselective Cascade for the Rapid Access of Pyrido[2′,1′:2,3]/Thiazolo[2′,3′:2,3]imidazo[1,5-a]quinolone Scaffolds as Potential Antibacterial and Anticancer Motifs. J Org Chem 2019; 84:14476-14486. [DOI: 10.1021/acs.joc.9b01919] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vunnam Srinivasulu
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, UAE
| | - Monther Khanfar
- Department of Chemistry, University of Jordan, 11942 Amman, Jordan
| | - Hany A. Omar
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, UAE
- College of Pharmacy, University of Sharjah, P.O. Box 27272, Sharjah, UAE
| | - Raafat ElAwady
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, UAE
- College of Pharmacy, University of Sharjah, P.O. Box 27272, Sharjah, UAE
| | - Scott McN Sieburth
- Temple University, Department of Chemistry, 201 Beury Hall, Philadelphia, Pennsylvania 19122, United States
| | - Anusha Sebastian
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, UAE
| | - Dana M. Zaher
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, UAE
| | - Farah Al-Marzooq
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, UAE
| | - Fatema Hersi
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, UAE
| | - Taleb H. Al-Tel
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, UAE
- College of Pharmacy, University of Sharjah, P.O. Box 27272, Sharjah, UAE
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26
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Semwal R, Ravi C, Saxena S, Adimurthy S. Copper-Catalyzed Multicomponent Reactions (MCRs) for Disulfenylation of Imidazo[1,2-a]pyridines Using Elemental Sulfur and Arylhalides and Intramolecular Cyclization of Haloimidazo[1,2-a]pyridines. J Org Chem 2019; 84:14151-14160. [DOI: 10.1021/acs.joc.9b01632] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Rashmi Semwal
- Academy of Scientific & Innovative Research, CSIR−Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar-364 002, Gujarat, India
| | - Chitrakar Ravi
- Academy of Scientific & Innovative Research, CSIR−Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar-364 002, Gujarat, India
| | - Soumya Saxena
- Academy of Scientific & Innovative Research, CSIR−Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar-364 002, Gujarat, India
| | - Subbarayappa Adimurthy
- Academy of Scientific & Innovative Research, CSIR−Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar-364 002, Gujarat, India
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27
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Guo C, Li B, Liu H, Zhang X, Zhang X, Fan X. Synthesis of Fused or Spiro Polyheterocyclic Compounds via the Dehydrogenative Annulation Reactions of 2-Arylindazoles with Maleimides. Org Lett 2019; 21:7189-7193. [DOI: 10.1021/acs.orglett.9b01889] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chenhao Guo
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, School of Environment, Henan Normal University, Xinxiang, Henan 453007, China
| | - Bin Li
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, School of Environment, Henan Normal University, Xinxiang, Henan 453007, China
| | - Huilai Liu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, School of Environment, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xiaopeng Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, School of Environment, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, School of Environment, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, School of Environment, Henan Normal University, Xinxiang, Henan 453007, China
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28
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Chintawar CC, Mane MV, Tathe AG, Biswas S, Patil NT. Gold-Catalyzed Cycloisomerization of Pyridine-Bridged 1,8-Diynes: An Expedient Access to Luminescent Cycl[3.2.2]azines. Org Lett 2019; 21:7109-7113. [DOI: 10.1021/acs.orglett.9b02677] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Chetan C. Chintawar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Manoj V. Mane
- Physical Chemistry Division, CSIR − National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
- KAUST Catalysis Centre, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Akash G. Tathe
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Suprakash Biswas
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
| | - Nitin T. Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal 462 066, India
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29
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Sanivarapu S, Vaddiraju N, Velide L. Synthesis and anti-inflammatory activity of 1,2-3-substituted 2a1,4,5-triazacyclopenta[cd]indene derivatives. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02386-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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30
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Xue C, Han J, Zhao M, Wang L. Rapid Construction of Fused Heteropolycyclic Aromatics via Palladium-Catalyzed Domino Arylations of Imidazopyridine Derivatives. Org Lett 2019; 21:4402-4406. [DOI: 10.1021/acs.orglett.9b00761] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chenwei Xue
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jianwei Han
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, 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
| | - Min Zhao
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
| | - Limin Wang
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai 200237, China
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31
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Li X, Chen X, Wang H, Chen C, Sun P, Mo B, Peng J. Palladium-catalyzed tandem one-pot synthesis of π-expanded imidazoles through a sequential Heck and oxidative amination reaction. Org Biomol Chem 2019; 17:4014-4023. [DOI: 10.1039/c9ob00482c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
An efficient palladium-catalyzed route for tandem one-pot synthesis of π-expanded imidazoles from 2-vinyl imidazoles and aryl halides is described.
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Affiliation(s)
- Xue Li
- Department of Chemistry and Chemical Engineering
- College of Science
- Northeast Forestry University
- Harbin
- P. R. China
| | - Xin Chen
- Department of Chemistry and Chemical Engineering
- College of Science
- Northeast Forestry University
- Harbin
- P. R. China
| | - Hui Wang
- Department of Chemistry and Chemical Engineering
- College of Science
- Northeast Forestry University
- Harbin
- P. R. China
| | - Chunxia Chen
- Department of Chemistry and Chemical Engineering
- College of Science
- Northeast Forestry University
- Harbin
- P. R. China
| | - Peng Sun
- Department of Chemistry and Chemical Engineering
- College of Science
- Northeast Forestry University
- Harbin
- P. R. China
| | - Baichuan Mo
- Department of Chemistry and Chemical Engineering
- College of Science
- Northeast Forestry University
- Harbin
- P. R. China
| | - Jinsong Peng
- Department of Chemistry and Chemical Engineering
- College of Science
- Northeast Forestry University
- Harbin
- P. R. China
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32
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Kumar KS, Meesa SR, Naikawadi PK. Palladium-Catalyzed [2 + 2 + 2] Annulation via Transformations of Multiple C–H Bonds: One-Pot Synthesis of Diverse Indolo[3,2-a]carbazoles. Org Lett 2018; 20:6079-6083. [DOI: 10.1021/acs.orglett.8b02465] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K. Shiva Kumar
- Department of Chemistry, Osmania University, Hyderabad-500 007, India
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33
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Kumar KS, Rajesham B, Kumar NP, Ramulu MS, Dandela R. A Ligand/Additive/Base-Free C(sp2
)-H Activation and Isocyanide Insertion in PEG-400: Synthesis of Indolizine/Imidazoline-Fused Heterocycles. ChemistrySelect 2018. [DOI: 10.1002/slct.201800397] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- K. Shiva Kumar
- Department of chemistry; Osmania University; Hyderabad-500 007 India
| | - Bandari Rajesham
- Department of chemistry; Osmania University; Hyderabad-500 007 India
| | - N. Praveen Kumar
- Department of chemistry; Osmania University; Hyderabad-500 007 India
| | | | - Rambabu Dandela
- Organic Chemistry Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune-411008 India
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34
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Zhao HY, Wu FS, Yang L, Liang Y, Cao XL, Wang HS, Pan YM. Catalyst- and solvent-free approach to 2-arylated quinolines via [5 + 1] annulation of 2-methylquinolines with diynones. RSC Adv 2018; 8:4584-4587. [PMID: 35539512 PMCID: PMC9077778 DOI: 10.1039/c7ra12716b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 01/20/2018] [Indexed: 12/21/2022] Open
Abstract
A novel route for the synthesis of 2-arylated quinolines through a [5 + 1] annulation directly from 2-methylquinolines and diynones under catalyst-free and solvent-free conditions was disclosed. This synthetic process was atom-economic, with good tolerance of a broad range of functional groups, and with great practical worth.
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Affiliation(s)
- Hai-Yuan Zhao
- School of Life and Environmental Sciences, Guilin University of Electronic Technology Guilin 541004 China
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 China +86-773-5803930
| | - Fu-Song Wu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 China +86-773-5803930
| | - Li Yang
- Guangxi Key Laboratory of Special Non-wood Forest Cultivation and Utilization, Guangxi Zhuang Autonomous Region Forestry Research Institute Nanning 530002 China
| | - Ying Liang
- School of Life and Environmental Sciences, Guilin University of Electronic Technology Guilin 541004 China
| | - Xiao-Lin Cao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 China +86-773-5803930
| | - Heng-Shan Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 China +86-773-5803930
| | - Ying-Ming Pan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 China +86-773-5803930
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35
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Wang T, Chen J, Wang J, Xu S, Lin A, Yao H, Jiang S, Xu J. Cobalt-catalyzed carbon–sulfur/selenium bond formation: synthesis of benzo[b]thio/selenophene-fused imidazo[1,2-a]pyridines. Org Biomol Chem 2018; 16:3721-3725. [DOI: 10.1039/c8ob00743h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
An efficient cobalt-catalyzed C–S/C–Se bond formation method for the synthesis of benzo[b]thio/selenophene-fused imidazo[1,2-a]pyridines has been developed.
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Affiliation(s)
- Tianyu Wang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
| | - Jichao Chen
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
| | - Jia Wang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
| | - Shengtao Xu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
| | - Sheng Jiang
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
| | - Jinyi Xu
- State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
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36
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Zheng G, Tian M, Xu Y, Chen X, Li X. Rhodium(iii)-catalyzed annulative coupling between arenes and sulfoxonium ylides via C–H activation. Org Chem Front 2018. [DOI: 10.1039/c7qo01033h] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Sulfoxonium ylides acts as a bifunctional C2-synthon in Rh(iii)-catalyzed redox-neutral annulative coupling with arenes for the synthesis of N-heterocycles and carbocycles.
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Affiliation(s)
- Guangfan Zheng
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Miaomiao Tian
- School of Chemistry and Chemical Engineering
- Henan Normal University
- Xinxiang 453007
- China
| | - Youwei Xu
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Xiaohong Chen
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Xingwei Li
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
- School of Chemistry and Chemical Engineering
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37
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Guo YJ, Lu S, Tian LL, Huang EL, Hao XQ, Zhu X, Shao T, Song MP. Iodine-Mediated Difunctionalization of Imidazopyridines with Sodium Sulfinates: Synthesis of Sulfones and Sulfides. J Org Chem 2017; 83:338-349. [DOI: 10.1021/acs.joc.7b02734] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yu-Jing Guo
- College of Chemistry and
Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Shuai Lu
- College of Chemistry and
Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Lu-Lu Tian
- College of Chemistry and
Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - En-Ling Huang
- College of Chemistry and
Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry and
Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry and
Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Tian Shao
- College of Chemistry and
Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry and
Molecular Engineering, School of Life Sciences, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
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38
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One-pot synthesis of 6H-2,2a1,3-triazaaceanthrylen-6-ones and 6H-2,2a1,4-triazaaceanthrylen-6-ones via tandem cyclization strategies. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.09.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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Synthesis and Optical Properties of Push-Push-Pull Chromophores Based on Imidazo[5,1,2-cd
]indolizines and Naphtho[1′
,2′
:4,5]imidazo[1,2-a
]pyridines. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701109] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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40
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Sultana F, Shaik SP, Alarifi A, Srivastava AK, Kamal A. Transition-Metal-Free Oxidative Cross-Coupling of Methylhetarenes with Imidazoheterocycles towards Efficient C(sp2
)−H Carbonylation. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700173] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Faria Sultana
- Medicinal Chemistry and Biotechnology Division; CSIR-Indian Institute of Chemical Technology; Uppal Road Hyderabad- 500007 India
| | - Siddiq Pasha Shaik
- Medicinal Chemistry and Biotechnology Division; CSIR-Indian Institute of Chemical Technology; Uppal Road Hyderabad- 500007 India
- Chemical Sciences Division; Academy of Scientific & Innovative Research (AcSIR); New Delhi- 110025 India
| | - Abdullah Alarifi
- Catalytic Chemistry Research Chair; Chemistry Department; College of Science; King Saud University; Riyadh 11451 Saudi Arabia
| | - Ajay Kumar Srivastava
- Medicinal Chemistry and Biotechnology Division; CSIR-Indian Institute of Chemical Technology; Uppal Road Hyderabad- 500007 India
- Chemical Sciences Division; Academy of Scientific & Innovative Research (AcSIR); New Delhi- 110025 India
- Current Address: Medicinal & Process Chemistry Division; CSIR-Central Drug Research Institute, Sector-10, Janakipuram Extension; Sitapur Road Lucknow- 226031 India
| | - Ahmed Kamal
- Medicinal Chemistry and Biotechnology Division; CSIR-Indian Institute of Chemical Technology; Uppal Road Hyderabad- 500007 India
- Chemical Sciences Division; Academy of Scientific & Innovative Research (AcSIR); New Delhi- 110025 India
- Catalytic Chemistry Research Chair; Chemistry Department; College of Science; King Saud University; Riyadh 11451 Saudi Arabia
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41
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Borges da Silva R, Teixeira RI, Wardell JL, Wardell SMSV, Garden SJ. Copper(ii) catalyzed synthesis of novel helical luminescent benzo[4,5]imidazo[1,2-a][1,10]phenanthrolines via an intramolecular C–H amination reaction. Org Biomol Chem 2017; 15:812-826. [DOI: 10.1039/c6ob02508k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Novel helical luminescent benzoimidazophenanthrolines were prepared using a Cu(ii) catalyzed C–H amination reaction.
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Affiliation(s)
- Ramon Borges da Silva
- Instituto de Química
- Universidade Federal do Rio de Janeiro
- Centro Tecnológica
- Bloco A
- Cidade Universitária
| | - Rodolfo Inêz Teixeira
- Instituto de Química
- Universidade Federal do Rio de Janeiro
- Centro Tecnológica
- Bloco A
- Cidade Universitária
| | - James L. Wardell
- Instituto de Tecnologia em Fármacos – Farmanguinhos
- Fiocruz. R. Sizenando Nabuco
- Rio de Janeiro
- Brazil
- Department of Chemistry
| | | | - Simon J. Garden
- Instituto de Química
- Universidade Federal do Rio de Janeiro
- Centro Tecnológica
- Bloco A
- Cidade Universitária
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42
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Yu S, Hu K, Gong J, Qi L, Zhu J, Zhang Y, Cheng T, Chen J. Palladium-catalyzed tandem addition/cyclization in aqueous medium: synthesis of 2-arylindoles. Org Biomol Chem 2017; 15:4300-4307. [DOI: 10.1039/c7ob00572e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pd-catalyzed tandem reaction of potassium aryltrifluoroborates with nitriles for the synthesis of 2-arylindoles in aqueous medium.
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Affiliation(s)
- Shuling Yu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Kun Hu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Julin Gong
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Linjun Qi
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Jianghe Zhu
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Yetong Zhang
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Tianxing Cheng
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Jiuxi Chen
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
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43
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Palladium-Catalyzed Oxidative Cyclization for the Synthesis of 2-Alkylimidazo[5,1,2-cd]indolizines. European J Org Chem 2016. [DOI: 10.1002/ejoc.201601019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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44
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Mu B, Li J, Zou D, Wu Y, Chang J, Wu Y. Pd-Catalyzed Tandem Cyclization via C–H Arylation and Acylation for the Construction of Polycyclic Scaffolds. Org Lett 2016; 18:5260-5263. [DOI: 10.1021/acs.orglett.6b02571] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Bing Mu
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
- The
College of Chemistry and Chemical Engineering, Zhengzhou Normal University, Zhengzhou 450044, P. R. China
- Medical
School, Huanghe Science and Technology College, Zhengzhou 450000, P. R. China
| | - Jingya Li
- Tetranov Biopharm,
LLC, Zhengzhou 450052, P. R. China
| | - Dapeng Zou
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yusheng Wu
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
- Tetranov Biopharm,
LLC, Zhengzhou 450052, P. R. China
| | - Junbiao Chang
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yangjie Wu
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
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45
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Lu S, Zhu X, Li K, Guo YJ, Wang MD, Zhao XM, Hao XQ, Song MP. Reactivity of p-Toluenesulfonylmethyl Isocyanide: Iron-Involved C–H Tosylmethylation of Imidazopyridines in Nontoxic Media. J Org Chem 2016; 81:8370-7. [DOI: 10.1021/acs.joc.6b01552] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shuai Lu
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemisry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemisry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Ke Li
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemisry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Yu-Jing Guo
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemisry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Meng-Dan Wang
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemisry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xue-Mei Zhao
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemisry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemisry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry and
Molecular Engineering, Henan Key Laboratory of Chemical Biology and
Organic Chemisry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
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46
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Wang Z, Li B, Zhang X, Fan X. One-Pot Cascade Reactions Leading to Pyrido[2′,1′:2,3]imidazo[4,5-c][1,2,3]triazolo[1,5-a]quinolines under Bimetallic Relay Catalysis with Air as the Oxidant. J Org Chem 2016; 81:6357-63. [DOI: 10.1021/acs.joc.6b00996] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Ze Wang
- School of Chemistry and Chemical
Engineering, Collaborative Innovation Center of Henan Province for
Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical
Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
| | - Bin Li
- School of Chemistry and Chemical
Engineering, Collaborative Innovation Center of Henan Province for
Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical
Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- School of Chemistry and Chemical
Engineering, Collaborative Innovation Center of Henan Province for
Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical
Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- School of Chemistry and Chemical
Engineering, Collaborative Innovation Center of Henan Province for
Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical
Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
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47
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Zhang J, Zhang X, Fan X. Synthesis of Indeno[1′,2′:4,5]imidazo[1,2-a]pyridin-11-ones and Chromeno[4′,3′:4,5]imidazo[1,2-a]pyridin-6-ones through Palladium-Catalyzed Cascade Reactions of 2-(2-Bromophenyl)imidazo[1,2-a]pyridines. J Org Chem 2016; 81:3206-13. [DOI: 10.1021/acs.joc.6b00166] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ju Zhang
- School of Chemistry and Chemical
Engineering, Collaborative Innovation Center of Henan Province for
Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical
Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- School of Chemistry and Chemical
Engineering, Collaborative Innovation Center of Henan Province for
Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical
Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- School of Chemistry and Chemical
Engineering, Collaborative Innovation Center of Henan Province for
Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical
Media and Reactions, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, China
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48
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Kandimalla SR, Sabitha G. Metal-free C–N bond formations: one-pot synthesis of pyrido[2′,1′:2,3]imidazo[4,5-c]cinnolines, benzo[4′,5']thiazolo- and thiazolo[2′,3′:2,3]imidazo[4,5-c]cinnolines. RSC Adv 2016. [DOI: 10.1039/c6ra15418b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient one-pot synthesis of novel pyrido[2′,1′:2,3]imidazo[4,5-c]cinnoline derivatives has been achieved with moderate to good yields, with two C–N bond formations through C–H functionalization of 2-arylimidazo[1,2-a]pyridines.
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Affiliation(s)
- Satheeshkumar Reddy Kandimalla
- Natural Products Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- Academy of Scientific and Innovative Research (AcSIR)
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49
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Saini HK, Kaswan P, Pericherla K, Kumar A. Synthesis of Naphtho-Fused Imidazo[1,2-a]pyridines through Copper-Catalyzed Cascade Reactions. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500297] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hitesh Kumar Saini
- Department of Chemistry; Birla Institute of Technology and Science; Pilani 333031, Rajasthan India
| | - Pinku Kaswan
- Department of Chemistry; Birla Institute of Technology and Science; Pilani 333031, Rajasthan India
| | | | - Anil Kumar
- Department of Chemistry; Birla Institute of Technology and Science; Pilani 333031, Rajasthan India
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