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Lv TK, Chen S, Lu YX, Chen BH. Synthesis of 1-Benzyl-2,4-diarylimidazole through I 2/CuI-Catalyzed Cyclization of Benzylamine and Hydrazone. J Org Chem 2024; 89:6723-6728. [PMID: 38691828 DOI: 10.1021/acs.joc.3c02968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
In this paper, we report an innovative method for synthesizing 1-benzyl-2,4-diarylimidazole utilizing 1-phenylethanone-2-(2-pyridinyl) hydrazine and benzylamine, catalyzed by an I2/CuI system. This approach represents a significant departure from traditional methods for synthesizing polysubstituted imidazoles; it employs the I2/CuI catalyst to replace rare metal catalysts, thereby achieving high yields of substitution products (≤85%). This method for the generation of 1,2,4-triimidazole derivatives is characterized by its exceptional chemical selectivity and extensive substrate compatibility.
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Affiliation(s)
- Ting-Kang Lv
- State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Si Chen
- School of Chemical Engineering, Lanzhou University of Arts and Sciences, Lanzhou, Gansu 730000, P. R. China
| | - Yi-Xuan Lu
- State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Bao-Hua Chen
- State Key Laboratory of Applied Organic Chemistry, Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
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2
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Boquet V, Sauber C, Beltran R, Ferey V, Rodier F, Hansjacob P, Theunissen C, Evano G. Copper-Catalyzed Coupling between ortho-Haloanilines and Lactams/Amides: Synthesis of Benzimidazoles and Telmisartan. J Org Chem 2024; 89:5469-5479. [PMID: 38565075 DOI: 10.1021/acs.joc.3c02905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
An efficient copper-catalyzed synthesis of (annelated) benzimidazoles is reported. This transformation is based on a simple and straightforward one-pot sequence involving a copper-catalyzed cross coupling between o-haloanilines and lactams/amides followed by a subsequent cyclization under acidic conditions. A variety of (annelated) benzimidazoles could be easily obtained in high yields from readily available starting materials, and this procedure could be further applied to the synthesis of the antihypertensive blockbuster drug telmisartan.
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Affiliation(s)
- Vincent Boquet
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Chris Sauber
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | | | | | - Fabien Rodier
- Sanofi, 45 Chemin de Météline, 04200 Sisteron, France
| | - Pierre Hansjacob
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Cédric Theunissen
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Gwilherm Evano
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
- WEL Research Institute, Avenue Pasteur 6, 1300 Wavre, Belgium
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Monga J, Ghosh NS, Rani I, Singh R, Deswal G, Dhingra AK, Grewal AS. Unlocking the Pharmacological Potential of Benzimidazole Derivatives: A Pathway to Drug Development. Curr Top Med Chem 2024; 24:437-485. [PMID: 38311918 DOI: 10.2174/0115680266283641240109080047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/23/2023] [Accepted: 01/02/2024] [Indexed: 02/06/2024]
Abstract
Heterocyclic molecules have fascinated a massive interest in medicinal chemistry. They are heterocyclic compounds that have gained significance due to their diverse variety of pharmacological activities. Benzimidazole is a heterocyclic compound consisting of benzene and imidazole rings. The ease of synthesis and the structural versatility of benzimidazole make it a promising scaffold for drug development. Many biological actions of benzimidazole derivatives have been well documented, including antibacterial, antiviral, anticancer, anti-inflammatory, antitubercular, and anthelmintic properties. The mechanism of action of benzimidazole derivatives varies with their chemical structure and target enzyme. This review has explored numerous methods for producing benzimidazole derivatives as well as a broad range of pharmacological activities. SAR investigations are also discussed in this review as they provide crucial details regarding the essential structural qualities that benzimidazole derivatives must have in order to be biologically active, which could aid in the rational design of new drug candidates. Benzimidazole scaffold is an exclusive structure in drug design and discovery. Many new pharmaceutical drugs containing benzimidazole are anticipated to be available within the next ten years as a result of the extensive therapeutic applications of benzimidazole and its derivatives. This review inspired many researchers to develop more biologically active compounds bearing benzimidazole, expanding the scope of finding a remedy for other diseases. From this study, we concluded that 2-substituted benzimidazole was considered more extensively by researchers.
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Affiliation(s)
- Jyoti Monga
- Adarsh Vijendra Institute of Pharmaceutical Sciences, Shobhit University, Gangoh, Uttar Pradesh, India
- Ch. Devi Lal College of Pharmacy, Jagadhri, Yamuna Nagar, Haryana, India
| | - Niladry S Ghosh
- Faculty of Pharmaceutical Sciences, Assam down town University, Guwahati, Assam, India
| | - Isha Rani
- Spurthy College of Pharmacy, Marasur Gate, Bengaluru, Karnataka, India
| | - Ranjit Singh
- Adarsh Vijendra Institute of Pharmaceutical Sciences, Shobhit University, Gangoh, Uttar Pradesh, India
| | - Geeta Deswal
- Guru Gobind Singh College of Pharmacy, Yamuna Nagar, Haryana, India
| | | | - Ajmer S Grewal
- Guru Gobind Singh College of Pharmacy, Yamuna Nagar, Haryana, India
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Luo X, Zhao Y, Tao S, Yang ZT, Luo H, Yang W. A simple and efficient copper-catalyzed three-component reaction to synthesize ( Z)-1,2-dihydro-2-iminoquinolines. RSC Adv 2021; 11:31152-31158. [PMID: 35496874 PMCID: PMC9041411 DOI: 10.1039/d1ra06330h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 09/01/2021] [Indexed: 12/19/2022] Open
Abstract
A operationally simple synthesis of (Z)-1,2-dihydro-2-iminoquinolines that proceeds under mild conditions is achieved by copper-catalyzed reaction of 1-(2-aminophenyl)ethan-1-ones, sulfonyl azides and terminal ynones. In particular, the reaction goes through a base-free CuAAC/ring-opening process to obtain the Z-configured products due to hydrogen bonding.
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Affiliation(s)
- Xiai Luo
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China .,The Marine Biomedical Research Institute of Guangdong Zhanjiang Zhanjiang Guangdong 524023 China.,Department of Pharmacy, Hunan University of Medicine Huaihua 418000 China
| | - Yu Zhao
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China
| | - Susu Tao
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China
| | - Zhong-Tao Yang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University Zhanjiang 524023 China .,The Marine Biomedical Research Institute of Guangdong Zhanjiang Zhanjiang Guangdong 524023 China
| | - Hui Luo
- Guangdong Key Laboratory for Research and Development of Natural Drugs, 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
| | - Weiguang Yang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, 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
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Zhao Y, Li L, Zhou Z, Chen M, Yang W, Luo H. Copper catalyzed five-component domino strategy for the synthesis of nicotinimidamides. Org Biomol Chem 2021; 19:3868-3872. [PMID: 33949559 DOI: 10.1039/d1ob00162k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A library of medicinally and synthetically important nicotinimidamides was synthesized by a copper-catalyzed multicomponent domino reaction of oxime esters, terminal ynones, sulfonyl azides, aryl aldehydes and acetic ammonium. Its synthetic pathway involves the formation of a highly reactive N-sulfonyl acetylketenimine, characterized by high selectivity, combinations of potential nucleophiles and electrophiles, mild reaction conditions and a wide substrate scope, and is a rare five-component example of a CuAAC/ring-opening reaction.
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Affiliation(s)
- Yu Zhao
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China.
| | - Li Li
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China.
| | - Zitong Zhou
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China.
| | - Man Chen
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China.
| | - Weiguang Yang
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China. and The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, Guangdong 524023, China and Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong 524023, China
| | - Hui Luo
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, 524023, China. and The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, Guangdong 524023, China and Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, Guangdong 524023, China
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Ma D, Yin Y, Chen YL, Yan YT, Wu J. Design, step-economical diversity-oriented synthesis of an N-heterocyclic library containing a pyrimidine moiety: discovery of novel potential herbicidal agents. RSC Adv 2021; 11:15380-15386. [PMID: 35424046 PMCID: PMC8698718 DOI: 10.1039/d1ra02663a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 04/15/2021] [Indexed: 01/12/2023] Open
Abstract
The synthesis of highly diverse libraries has become of paramount importance for obtaining novel leads for drug and agrochemical discovery. Herein, the step-economical diversity-oriented synthesis of a library of various pyrimidine-N-heterocycle hybrids was developed, in which a 4,6-dimethoxypyrimidine core was incorporated into nine kinds of N-heterocycles. A total of 34 structurally diverse compounds were synthesized via a two-step process from very simple and commercially available starting materials. Further, in vivo biological screening of this library identified 11 active compounds that exhibited good post-emergence herbicidal activity against D. sanguinalis at 750 g ai per ha. More importantly, pyrimidine-tetrahydrocarbazole hybrid 5q showed good to excellent herbicidal activity against five test weeds at the same dosage. Pyrimidine-tetrahydrocarbazole hybrids represent a novel class of herbicidal agents that may become promising lead compounds in the herbicidal discovery process.
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Affiliation(s)
- Dong Ma
- Department of Chemistry, Zhejiang University Hangzhou 310027 P. R. China +86-571-87951895
| | - Yang Yin
- Department of Chemistry, Zhejiang University Hangzhou 310027 P. R. China +86-571-87951895
| | - Ying-Lu Chen
- Department of Chemistry, Zhejiang University Hangzhou 310027 P. R. China +86-571-87951895
| | - Yi-Tao Yan
- Department of Chemistry, Zhejiang University Hangzhou 310027 P. R. China +86-571-87951895
| | - Jun Wu
- Department of Chemistry, Zhejiang University Hangzhou 310027 P. R. China +86-571-87951895
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Zhu G, Lai X, Wang S, Lin C, Yuan Y. Synthesis of 2-Imino-1,2-dihydroquinolines via Copper Catalysis. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202102037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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