1
|
Wen L, Tan Q, Pi C, Yuan J, Zhang J, Mi X. Visible-light-mediated C-H amidation of imidazoheterocycles with N-amidopyridiniums. Org Biomol Chem 2024; 22:4647-4650. [PMID: 38787700 DOI: 10.1039/d4ob00461b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
C-3 amidated imidazoheterocycles were synthesized via a visible light-promoted reaction of imidazoheterocycles with N-amidopyridinium salts catalyzed by 4CzIPN under mild conditions. For imidazoheterocycles and N-amidopyridinium salts with various substituents, the reaction proceeded smoothly to give the corresponding products in moderate to good yields. The reaction provides a new strategy for the synthesis of secondary amides with the imidazo[1,2-a]pyridine core.
Collapse
Affiliation(s)
- Lili Wen
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Qiannan Tan
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Chao Pi
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450052, China.
| | - Juan Yuan
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Jingyu Zhang
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Xia Mi
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| |
Collapse
|
2
|
Romero AH. C-H Bond Functionalization of N-Heteroarenes Mediated by Selectfluor. Top Curr Chem (Cham) 2023; 381:29. [PMID: 37736818 DOI: 10.1007/s41061-023-00437-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 08/21/2023] [Indexed: 09/23/2023]
Abstract
Herein, recent developments for Selectfluor-mediated C-H functionalization of N-heteroarenes are described. This type of C-H bond activation is an attractive and competitive alternative to traditional methodologies, allowing the functionalization of a variety of chemical functions. In addition, Selectfluor is a more sustainable and economically accessible oxidant compared with expensive/toxic metals or hazardous peroxides. For a practical understanding, the current review classified systematically the reported strategies in four subsections as follows: (1) carbon-carbon formation, (2) carbon-nitrogen bond formation, (3) carbon-chalcogen bond, and (4) carbon-halogen bond formation. Mechanistic aspects and reaction conditions are fully discussed to provide an understanding of the aspects that govern C-H functionalization in N-heteroarenes mediated by Selectfluor.
Collapse
Affiliation(s)
- Angel H Romero
- Grupo de Química Orgánica Medicinal, Instituto de Química Biológica, Facultad de Ciencias, Universidad de la República, Igua 4225, 11400, Montevideo, Uruguay.
| |
Collapse
|
3
|
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.
Collapse
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
| |
Collapse
|
4
|
Dalkilic O, Turbedaroglu O, Lafzi F, Kilic H. Regioselective C3-H Alkylation of Imidazopyridines with Donor-Acceptor Cyclopropanes. J Org Chem 2023; 88:11834-11846. [PMID: 37535468 PMCID: PMC10443042 DOI: 10.1021/acs.joc.3c01122] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Indexed: 08/05/2023]
Abstract
Alkylated imidazopyridines are crucial structures for medicinal chemistry. Here, an efficient method for the C3-H alkylation of imidazopyridines was devised. Under Lewis acid-catalyzed conditions, reactions of imidazopyridines with different donor-acceptor cyclopropanes were carried out. Finally, 1,3-bisfunctionalizaton of donor-acceptor cyclopropanes was performed. In addition, synthesized C3-alkylated imidazopyridines are amenable for diverse synthetic applications.
Collapse
Affiliation(s)
| | | | - Ferruh Lafzi
- Department of Chemistry,
Faculty of Sciences, Atatürk University, Erzurum 25240, Türkiye
| | - Haydar Kilic
- Department of Chemistry,
Faculty of Sciences, Atatürk University, Erzurum 25240, Türkiye
| |
Collapse
|
5
|
Recent advances in transition-metal-free C–H functionalization of imidazo[1,2-a]pyridines. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.03.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
|
6
|
Zhou Z, Luo D, Li G, Yang Z, Cui L, Yang W. Copper-catalyzed three-component reaction to synthesize polysubstituted imidazo[1,2- a]pyridines. RSC Adv 2022; 12:20199-20205. [PMID: 35919587 PMCID: PMC9280286 DOI: 10.1039/d2ra02722d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 07/07/2022] [Indexed: 12/02/2022] Open
Abstract
An efficient three-component one-pot and operationally simple cascade of 2-aminopyridines with sulfonyl azides and terminal ynones is reported, providing a variety of polysubstituted imidazo[1,2-a]pyridine derivatives in moderate to excellent yields. In particular, the reaction goes a through CuAAC/ring-cleavage process and forms a highly active intermediate α-acyl-N-sulfonyl ketenimine with base free. Three-component one-pot synthesis of polysubstituted imidazo[1,2-a]pyridine derivatives through a base free CuAAC/ring-cleavage process.![]()
Collapse
Affiliation(s)
- Zitong Zhou
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Danyang Luo
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Guanrong Li
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Zhongtao Yang
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Liao Cui
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
| | - Weiguang Yang
- Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China
- The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, Guangdong, 524023, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong, 524023, China
| |
Collapse
|
7
|
Ghosh D, Ghosh S, Hajra A. Electrochemical Functionalization of Imidazopyridine and Indazole: An Overview. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100981] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Debashis Ghosh
- Department of Chemistry St. Joseph's College (Autonomous) Bangalore 560027 Karnataka India
| | - Sumit Ghosh
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Alakananda Hajra
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| |
Collapse
|
8
|
Kanyiva KS, Marina T, Nishibe S, Shibata T. Metal‐Free Aminoiodination of Alkynes Under Visible Light Irradiation for the Construction of a Nitrogen‐Containing Eight‐Membered Ring System. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kyalo Stephen Kanyiva
- Global Center of Science and Engineering School of Advanced Science and Engineering Waseda University 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Tane Marina
- Department of Chemistry and Biochemistry School of Advanced Science and Engineering Waseda University 3-4-1 Okubo, Shinjuku Tokyo 169-8555, Japan
| | - Shun Nishibe
- Department of Chemistry and Biochemistry School of Advanced Science and Engineering Waseda University 3-4-1 Okubo, Shinjuku Tokyo 169-8555, Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry School of Advanced Science and Engineering Waseda University 3-4-1 Okubo, Shinjuku Tokyo 169-8555, Japan
| |
Collapse
|
9
|
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
| |
Collapse
|
10
|
Ma CH, Chen M, Feng ZW, Zhang Y, Wang J, Jiang YQ, Yu B. Functionalization of imidazo[1,2-a]pyridines via radical reactions. NEW J CHEM 2021. [DOI: 10.1039/d1nj00704a] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The recent advances in radical reactions for the direct functionalization of imidazo[1,2-a]pyridines are reviewed.
Collapse
Affiliation(s)
- Chun-Hua Ma
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Ming Chen
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Zhi-Wen Feng
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Yan Zhang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Jin Wang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Yu-Qin Jiang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Bing Yu
- Green Catalysis Centre
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| |
Collapse
|
11
|
Aneeja T, Neetha M, Afsina CMA, Anilkumar G. Progress and prospects in copper-catalyzed C-H functionalization. RSC Adv 2020; 10:34429-34458. [PMID: 35514395 PMCID: PMC9056871 DOI: 10.1039/d0ra06518h] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 09/02/2020] [Indexed: 01/21/2023] Open
Abstract
Copper-catalyzed C-H functionalization is becoming a significant area in organic chemistry. Copper is now widely used as a catalyst in organic synthesis as it is inexpensive and not very toxic. Functionalization of C-H bonds to construct wide varieties of organic compounds has received much attention in recent times. This review focuses on the recent advances in Cu-catalyzed C-H functionalization and covers literature from 2018-2020.
Collapse
Affiliation(s)
- Thaipparambil Aneeja
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P.O. Kottayam Kerala 686560 India (+91) 481-2731036
| | - Mohan Neetha
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P.O. Kottayam Kerala 686560 India (+91) 481-2731036
| | - C M A Afsina
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P.O. Kottayam Kerala 686560 India (+91) 481-2731036
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University Priyadarsini Hills P.O. Kottayam Kerala 686560 India (+91) 481-2731036
- Advanced Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University Priyadarsini Hills P.O. Kottayam Kerala 686560 India
- Institute for Integrated Programmes and Research in Basic Sciences (IIRBS), Mahatma Gandhi University Priyadarsini Hills P.O. Kottayam Kerala 686560 India
| |
Collapse
|
12
|
Patel OPS, Nandwana NK, Legoabe LJ, Das BC, Kumar A. Recent Advances in Radical C−H Bond Functionalization of Imidazoheterocycles. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000633] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Om P. S. Patel
- Department of Chemistry Birla Institute of Technology and Science Pilani Pilani Campus 333031 Rajasthan India
- Centre of Excellence for Pharmaceutical Sciences North-West University Private Bag X6001 Potchefstroom 2520 South Africa
| | - Nitesh K. Nandwana
- Department of Chemistry Birla Institute of Technology and Science Pilani Pilani Campus 333031 Rajasthan India
- Departments of Medicine and Pharmacological Sciences Icahn School of Medicine at Mount Sinai New York, NY 10029 USA
| | - Lesetja J. Legoabe
- Centre of Excellence for Pharmaceutical Sciences North-West University Private Bag X6001 Potchefstroom 2520 South Africa
| | - Bhaskar C. Das
- Departments of Medicine and Pharmacological Sciences Icahn School of Medicine at Mount Sinai New York, NY 10029 USA
| | - Anil Kumar
- Department of Chemistry Birla Institute of Technology and Science Pilani Pilani Campus 333031 Rajasthan India
| |
Collapse
|
13
|
Guo T, Wang H, Cao C, Chen K, Liu Y, Zhang P, Zhao Y, Ma Y. Highly Efficient and Eco‐Benign Synthesis of 3‐Imidazoheterocyclic‐Substituted Phthalides/Isoindolinones in Water under Catalyst‐ and Additive‐Free Conditions. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000308] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Tao Guo
- School of Chemistry and Chemical Engineering Henan University of Technology 450001 Zhengzhou Henan P. R. China
| | - Hui‐Jie Wang
- School of Chemistry and Chemical Engineering Henan University of Technology 450001 Zhengzhou Henan P. R. China
| | - Can‐Can Cao
- School of Chemistry and Chemical Engineering Henan University of Technology 450001 Zhengzhou Henan P. R. China
| | - Kuo‐Hong Chen
- School of Chemistry and Chemical Engineering Henan University of Technology 450001 Zhengzhou Henan P. R. China
| | - Yu Liu
- School of Chemistry and Chemical Engineering Henan University of Technology 450001 Zhengzhou Henan P. R. China
| | - Pan‐Ke Zhang
- College of Chemistry, and Institute of Green Catalysis, Henan Institute of Advanced Technology Zhengzhou University 450001 Zhengzhou Henan P. R. China
| | - Yun‐Hui Zhao
- School of Chemistry and Chemical Engineering Hunan University of Science and Technology 411201 Xiangtan Hunan P. R. China
| | - Yong‐Cheng Ma
- Pharmacy Department Fuwai Centeral China Cardiovascular Hospital No.1, Fuwai Road 451464 Zhengzhou Henan P. R. China
| |
Collapse
|
14
|
Dong Z, Liu Y, Zhou CW, Huang JJ, Guo T, Wang Y. Direct cross-dehydrogenative coupling reactions of imidazopyridines and 1-naphthylamines with ethers under metal-free conditions. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1761394] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Zhe Dong
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Beijing, P.R. China
- Institute for Food Control, National Institutes for Food and Drug Control, Beijing, P.R. China
| | - Yu Liu
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, P.R. China
| | - Chen-Wei Zhou
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, P.R. China
| | - Jun-Jian Huang
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, P.R. China
| | - Tao Guo
- School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, P.R. China
| | - Yun Wang
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Beijing, P.R. China
| |
Collapse
|
15
|
|
16
|
Shi T, Sun K, Chen X, Zhang Z, Huang X, Peng Y, Qu L, Yu B. Recyclable Perovskite as Heterogeneous Photocatalyst for Aminomethylation of Imidazo‐Fused Heterocycles. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901324] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Tao Shi
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Kai Sun
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Xiao‐Lan Chen
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Zhao‐Xin Zhang
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Xian‐Qiang Huang
- School of Chemistry & Chemical EngineeringLiaocheng University Liaocheng, Shandong 252059 People's Republic of China
| | - Yu‐Yu Peng
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and TransportationChangsha University of Science and Technology Changsha 410114 People's Republic of China
| | - Ling‐Bo Qu
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Bing Yu
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| |
Collapse
|
17
|
Sun K, Li Y, Feng R, Mu S, Wang X, Zhang B. C-H Imidation and Dual C-H Bond Aminobromination of Five-Membered Heterocycles. J Org Chem 2020; 85:1001-1008. [PMID: 31872767 DOI: 10.1021/acs.joc.9b02941] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Here, we report a practical C-H imidation of five-membered heterocycles under metal-free conditions. We also report the first dual C-H bond aminobromination of thiophenes, with benzotriazole, saccharin, 1,2,4-triazole, benzimidazole, pyrazole, 4-bromopyrazole, 5-methyltetrazole, and dibenzenesulfonimides as effective amine sources. Mechanistic studies support the radical pathway of the imidation and aminobromination reactions.
Collapse
Affiliation(s)
- Kai Sun
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , P. R. China
| | - Yali Li
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , P. R. China
| | - Ranran Feng
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , P. R. China
| | - Shiqiang Mu
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , P. R. China
| | - Xin Wang
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , P. R. China.,College of Chemistry and Energy , Zhengzhou University , Zhengzhou 450001 , P. R. China
| | - Bing Zhang
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , P. R. China.,College of Chemistry and Energy , Zhengzhou University , Zhengzhou 450001 , P. R. China
| |
Collapse
|
18
|
PhI(OAc)2-mediated oxidative C H sulfoximination of imidazopyridines under mild conditions. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151362] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
19
|
Zhang J, Li R, Zhu F, Sun C, Shen J. An improved synthesis of telmisartan via the copper-catalyzed cyclization of o-haloarylamidines. RSC Adv 2020; 10:13717-13721. [PMID: 35493026 PMCID: PMC9051534 DOI: 10.1039/d0ra00886a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 03/21/2020] [Indexed: 12/12/2022] Open
Abstract
A concise synthetic route was designed for making telmisartan. The key bis-benzimidazole structure was constructed via the copper-catalyzed cyclization of o-haloarylamidines. By adopting this approach, telmisartan was obtained in a 7-step overall yield of 54% starting from commercially available 3-methyl-4-nitrobenzoic acid, and the use of HNO3/H2SO4 for nitration and polyphosphoric acid (PPA) for cyclization in the reported literatures were avoided. A concise synthetic route of telmisartan was developed via the copper-catalyzed cyclization of o-haloarylamidines, avoiding the use of HNO3/H2SO4 and polyphosphoric acid (PPA).![]()
Collapse
Affiliation(s)
- Junchi Zhang
- CAS Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences (CAS)
- Shanghai 201203
- People's Republic of China
| | - Rui Li
- CAS Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences (CAS)
- Shanghai 201203
- People's Republic of China
| | - Fuqiang Zhu
- Topharman Shanghai Co., Ltd
- Shanghai 201203
- People's Republic of China
| | - Changliang Sun
- Topharman Shanghai Co., Ltd
- Shanghai 201203
- People's Republic of China
| | - Jingshan Shen
- CAS Key Laboratory of Receptor Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences (CAS)
- Shanghai 201203
- People's Republic of China
| |
Collapse
|
20
|
Sun K, Luan B, Liu Z, Zhu J, Du J, Bai E, Fang Y, Zhang B. Mild and regioselective azol-halogenation of alkenes. Org Biomol Chem 2019; 17:4208-4211. [PMID: 30941381 DOI: 10.1039/c9ob00317g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An economical and practical azol-halogenation protocol of alkenes, which provides a general approach to construct a series of structurally diverse β-halogenated amine derivatives, is reported. The wide substrate scope, good functional group tolerance, ease of large-scale preparation and potential for product derivatization make this reaction attractive. Mechanistic studies suggest that the azol-halogenation process might involve a radical halogenation followed by nucleophilic azolyation.
Collapse
Affiliation(s)
- Kai Sun
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, P. R. China.
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Gan Z, Yan Q, Li G, Li Q, Dou X, Li G, Yang D. Copper‐Catalyzed Domino Synthesis of Sulfur‐Containing Heterocycles Using Carbon Disulfide as a Building Block. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900643] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ziyu Gan
- School of Chemistry and Chemical EngineeringQufu Normal University Qufu 273165 People's Republic of China
| | - Qiuli Yan
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular EngineeringQingdao University of Science and Technology Qingdao 266042 People's Republic of China
- School of Chemistry and Chemical EngineeringQufu Normal University Qufu 273165 People's Republic of China
| | - Guoqing Li
- School of Chemistry and Chemical EngineeringQufu Normal University Qufu 273165 People's Republic of China
| | - Qin Li
- School of Chemistry and Chemical EngineeringQufu Normal University Qufu 273165 People's Republic of China
| | - Xiaomeng Dou
- School of Chemistry and Chemical EngineeringHunan University of Science and Technology Xiangtan 411201 People's Republic of China
| | - Guang‐Yao Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and TransportationChangsha University of Science and Technology Changsha 410114 People's Republic of China
| | - Daoshan Yang
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemistry and Molecular EngineeringQingdao University of Science and Technology Qingdao 266042 People's Republic of China
- School of Chemistry and Chemical EngineeringQufu Normal University Qufu 273165 People's Republic of China
| |
Collapse
|
22
|
Samanta S, Mondal S, Ghosh D, Hajra A. Rhodium-Catalyzed Directed C–H Amidation of Imidazoheterocycles with Dioxazolones. Org Lett 2019; 21:4905-4909. [DOI: 10.1021/acs.orglett.9b01832] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Sadhanendu Samanta
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Susmita Mondal
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Debashis Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| |
Collapse
|
23
|
One-Pot NBS-Promoted Synthesis of Imidazoles and Thiazoles from Ethylarenes in Water. Molecules 2019; 24:molecules24050893. [PMID: 30836604 PMCID: PMC6429224 DOI: 10.3390/molecules24050893] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 02/22/2019] [Accepted: 02/26/2019] [Indexed: 11/16/2022] Open
Abstract
A facile and eco-friendly method has been developed for the synthesis of imidazoles and thiazoles from ethylarenes in water. The reaction proceeds via in situ formation of α-bromoketone using NBS as a bromine source as well as an oxidant, followed by trapping with suitable nucleophiles to provide the corresponding products in good yields under metal-free conditions.
Collapse
|
24
|
Yu Y, Yuan Y, Liu H, He M, Yang M, Liu P, Yu B, Dong X, Lei A. Electrochemical oxidative C–H/N–H cross-coupling for C–N bond formation with hydrogen evolution. Chem Commun (Camb) 2019; 55:1809-1812. [DOI: 10.1039/c8cc09899a] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We herein report an electrochemical oxidative C–H/N–H cross-coupling reaction in an undivided cell.
Collapse
Affiliation(s)
- Yi Yu
- National Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Yong Yuan
- College of Chemistry and Molecular Sciences
- Institute for Advanced Studies (IAS)
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Huilin Liu
- National Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Min He
- National Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Mingzhu Yang
- National Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Pan Liu
- National Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Banying Yu
- National Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Xuanchi Dong
- National Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Aiwen Lei
- National Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
- College of Chemistry and Molecular Sciences
| |
Collapse
|