1
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Chen Y, Zhang C, Wang K, Li M, Tang H, Cheng W, Yin J, Yi W. Cu(I)-Catalyzed Three-Component Annulation for the Synthesis of 3-Acyl Imidazo[1, 5- a]Pyridines from 2-Pyridinyl-Substituted p-Quinone Methides, Terminal Alkynes, and TsN 3 Using O 2 as the Oxygen Source. J Org Chem 2024; 89:5423-5433. [PMID: 38557074 DOI: 10.1021/acs.joc.3c02876] [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
Currently, most conventional methods to achieve imidazo[1,5-a]pyridines have limitations for the synthesis of 3-acyl imidazo[1,5-a]pyridines. Herein, a novel and efficient Cu(I)-catalyzed three-component annulation method for the synthesis of valuable 3-acyl imidazo[1,5-a]pyridines by the reaction of 2-pyridinyl-substituted p-QMs, terminal alkynes, and TsN3 in the presence of O2 under mild conditions have successfully been developed. The investigation indicated that molecular oxygen (O2) and TsN3, respectively, serving as oxygen and nitrogen sources, were essential for the successful completion of the reaction system.
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Affiliation(s)
- Yan Chen
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Chuanhao Zhang
- School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Kunpeng Wang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Mengfan Li
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Hao Tang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Wen Cheng
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
| | - Jun Yin
- Shanghai No.4 Reagent Chemical Co., Ltd., Shanghai 201512, P. R. China
| | - Weiyin Yi
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, P. R. China
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2
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Peng J, Li S, Huang J, Meng Q, Wang L, Xin W, Li W, Zhou W, Zhang L. Construction of Imidazole-Fused-Ring Systems by Iron-Catalyzed C(sp 3)-H Amination-Cyclization under Aerobic Conditions. J Org Chem 2023; 88:16581-16588. [PMID: 37976463 DOI: 10.1021/acs.joc.3c02078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
An iron-catalyzed efficient C-H amination for the construction of imidazole-fused-ring systems was developed under aerobic conditions. Compared to previous studies, this work exhibited green features. The reaction was conducted in the green solvent anisole, with water as the only byproduct. Four C(sp3)-H bonds were cleaved and three C-N bonds were formed in this transformation. Imidazo[1,5-a]pyridine-, imidazo[5,1-b]oxazole-, imidazo[5,1-b]thiazole-, imidazo[1,5-a]pyrazine-, and imidazo[1,5-a]imidazole-related N-heterocycles were obtained in acceptable-to-excellent yield.
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Affiliation(s)
- Jiangling Peng
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Shijia Li
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Junwei Huang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Qianli Meng
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Lixin Wang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Wenlong Xin
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Weini Li
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, California91010, United States
| | - Wei Zhou
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Lanyue Zhang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
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3
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Zhang J, She M, Liu L, Liu M, Wang Z, Liu H, Sun W, Liu X, Liu P, Zhang S, Li J. Construction and regulation of imidazo[1,5-a]pyridines with AIE characteristics via iodine mediated Csp2−H or Csp−H amination. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.05.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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4
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Wang Q, Zha M, Zhou F, Chen X, Wang B, Liu G, Qian L. CBr 4 Mediated [4 + 1] Dehydrocyclization for the Synthesis of Functionalized Imidazo[1,5-a]heterocycles from Pyridin-2-ylmethanamines and Aldehydes. ACS OMEGA 2021; 6:20303-20308. [PMID: 34395978 PMCID: PMC8358950 DOI: 10.1021/acsomega.1c02181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 07/22/2021] [Indexed: 06/13/2023]
Abstract
A CBr4 mediated [4 + 1] dehydrocyclization was developed for the synthesis of imidazo[1,5-a]heterocycles from pyridin-2-ylmethanamines and aldehydes. This method was highly practical with the advantages of wide substrate scope, functional group tolerance, and mild reaction conditions.
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Affiliation(s)
- Qiang Wang
- Research
Center for Biomedical and Health Science, Anhui Science and Technology University, Fengyang 233100, P.R. China
| | - Meng Zha
- School
of Life and Health Science, Anhui Science
and Technology University, Fengyang 233100, P.R. China
| | - Feilong Zhou
- School
of Life and Health Science, Anhui Science
and Technology University, Fengyang 233100, P.R. China
| | - Xixi Chen
- School
of Life and Health Science, Anhui Science
and Technology University, Fengyang 233100, P.R. China
| | - Baiyu Wang
- School
of Life and Health Science, Anhui Science
and Technology University, Fengyang 233100, P.R. China
| | - Guodong Liu
- Research
Center for Biomedical and Health Science, Anhui Science and Technology University, Fengyang 233100, P.R. China
| | - Lisheng Qian
- Research
Center for Biomedical and Health Science, Anhui Science and Technology University, Fengyang 233100, P.R. China
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5
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Rao WH, Li Q, Jiang LL, Deng XW, Xu P, Chen FY, Li M, Zou GD. Copper-Catalyzed Intermolecular C(sp 2)-H Amination with Electrophilic O-Benzoyl Hydroxylamines. J Org Chem 2021; 86:10580-10590. [PMID: 34314188 DOI: 10.1021/acs.joc.1c01229] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A copper-catalyzed intermolecular electrophilic amination of benzamides with O-benzoyl hydroxylamines was achieved with the assistance of an 8-aminoquinolyl group. With this protocol, good compatibility was observed for a variety of aryl amides and heteroaryl amides, and excellent tolerance with various functional groups was achieved. Significantly, the monoaminated product was overwhelmingly delivered under the simple reaction conditions. Preliminary mechanistic investigations suggested that a radical pathway should be excluded and C-H activation be potentially the rate-determining step.
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Affiliation(s)
- Wei-Hao Rao
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China.,Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University, Wuhan 430062, China
| | - Qi Li
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Li-Li Jiang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Xue-Wan Deng
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Pan Xu
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Fang-Yuan Chen
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Ming Li
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Guo-Dong Zou
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
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6
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Xie Z, Zhou F, Ding K. Copper‐Mediated Diamination of Arylboronic Acids for the Synthesis of 2‐Aryl Benzimidazoles Using Trimethylsilyl Azide as the Amino Sources with Aldehydes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000385] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zeqiang Xie
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Discovery of Chinese Ministry of Education (MOE)Guangzhou City Key Laboratory of Precision Chemical Drug DevelopmentSchool of PharmacyJinan University 601 Huangpu Avenue West Guangzhou 510632 People's Republic of China
| | - Fengtao Zhou
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Discovery of Chinese Ministry of Education (MOE)Guangzhou City Key Laboratory of Precision Chemical Drug DevelopmentSchool of PharmacyJinan University 601 Huangpu Avenue West Guangzhou 510632 People's Republic of China
| | - Ke Ding
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Discovery of Chinese Ministry of Education (MOE)Guangzhou City Key Laboratory of Precision Chemical Drug DevelopmentSchool of PharmacyJinan University 601 Huangpu Avenue West Guangzhou 510632 People's Republic of China
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7
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Patil SG, Jadhav JS, Sankpal ST. Mg 3N 2-assisted one-pot synthesis of 1,3-disubstituted imidazo[1,5- a]pyridine. RSC Adv 2020; 10:11808-11815. [PMID: 35496590 PMCID: PMC9050600 DOI: 10.1039/c9ra10848c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 03/03/2020] [Indexed: 11/21/2022] Open
Abstract
A novel Mg3N2-assisted one-pot annulation strategy has been developed via cyclo-condensation reaction of 2-pyridyl ketones with alkyl glyoxylates or aldehydes, allowing the formation of imidazo[1,5-a]pyridines exclusively with an exellent yield.
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Affiliation(s)
- Suhas G Patil
- Sant Rawool Maharaj Mahavidyalaya Kudal 416520 MS India.,Department of Chemistry, ASP College Devrukh Ratnagiri 415804 MS India +91 2354 260 058
| | | | - Sagar T Sankpal
- Department of Chemistry, ASP College Devrukh Ratnagiri 415804 MS India +91 2354 260 058
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8
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Reen GK, Kumar A, Sharma P. Recent advances on the transition-metal-catalyzed synthesis of imidazopyridines: an updated coverage. Beilstein J Org Chem 2019; 15:1612-1704. [PMID: 31435443 PMCID: PMC6664406 DOI: 10.3762/bjoc.15.165] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 06/28/2019] [Indexed: 12/21/2022] Open
Abstract
A comprehensive account of recent advances in the synthesis of imidazopyridines, assisted through transition-metal-catalyzed multicomponent reactions, C-H activation/functionalization and coupling reactions are highlighted in this review article. The basic illustration of this review comprises of schemes with concise account of explanatory text. The schemes depict the reaction conditions along with a quick look into the mechanism involved to render a deep understanding of the catalytic role. At some instances optimizations of certain features have been illustrated through tables, i.e., selectivity of catalyst, loading of the catalyst and percentage yield with different substrates. Each of the reported examples has been rigorously analyzed for reacting substrates, reaction conditions and transition metals used as the catalyst. This review will be helpful to the chemists in understanding the challenges associated with the reported methods as well as the future possibilities, both in the choice of substrates and catalysts. This review would be quite appealing to a wider range of organic chemists in academia and industrial R&D sectors working in the field of heterocyclic syntheses. In a nutshell, this review will be a guiding torch to envisage: (i) the role of various transition metals in the domain dedicated towards method development and (ii) for the modifications needed thereof in the R&D sector.
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Affiliation(s)
| | - Ashok Kumar
- School of Chemical Sciences, Devi Ahilya University, Indore, (M. P.), India
| | - Pratibha Sharma
- School of Chemical Sciences, Devi Ahilya University, Indore, (M. P.), India
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9
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Chandrasekar S, Sangeetha S, Sekar G. Synthesis of 1,3‐Disubstituted Imidazo[1,5‐
a
]pyridines through Oxidative C‐N Bond Formation from Aryl‐2‐pyridylmethanols and Their Fluorescent Study. ChemistrySelect 2019. [DOI: 10.1002/slct.201901440] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Selvaraj Chandrasekar
- Department of ChemistryIndian Institute of Technology Madras Chennai-600036, Tamil Nadu India
| | - Subramani Sangeetha
- Department of ChemistryIndian Institute of Technology Madras Chennai-600036, Tamil Nadu India
| | - Govindasamy Sekar
- Department of ChemistryIndian Institute of Technology Madras Chennai-600036, Tamil Nadu India
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10
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Sheng J, Liu J, Zhao H, Zheng L, Wei X. Metal-free synthesis of imidazo[1,5-a]pyridines via elemental sulfur mediated sequential dual oxidative Csp 3-H amination. Org Biomol Chem 2019; 16:5570-5574. [PMID: 30047971 DOI: 10.1039/c8ob01391h] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and efficient approach has been developed for the synthesis of imidazo[1,5-a]pyridines using the elemental sulfur mediated sequential dual oxidative Csp3-H amination of 2-pyridyl acetates and amines under metal- and peroxide-free conditions. Broad substrate scope, operational simplicity and gram-scale ability make this chemistry very practical.
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Affiliation(s)
- Jie Sheng
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China.
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11
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Yang Q, Yang Z, Tan Y, Zhao J, Sun Q, Zhang H, Zhang Y. Direct C(
sp
2
)−H Amination to Synthesize Primary 3‐aminoquinoxalin‐2(1
H
)‐ones under Simple and Mild Conditions. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801661] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Qiming Yang
- School of Chemical Engineering and Technology, Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy SavingHebei University of Technology Tianjin 300130 People's Republic of China
| | - Zibing Yang
- School of Chemical Engineering and Technology, Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy SavingHebei University of Technology Tianjin 300130 People's Republic of China
| | - Yushi Tan
- School of Chemical Engineering and Technology, Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy SavingHebei University of Technology Tianjin 300130 People's Republic of China
| | - Jiquan Zhao
- School of Chemical Engineering and Technology, Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy SavingHebei University of Technology Tianjin 300130 People's Republic of China
| | - Qian Sun
- School of Chemical Engineering and Technology, Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy SavingHebei University of Technology Tianjin 300130 People's Republic of China
| | - Hong‐Yu Zhang
- School of Chemical Engineering and Technology, Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy SavingHebei University of Technology Tianjin 300130 People's Republic of China
| | - Yuecheng Zhang
- School of Chemical Engineering and Technology, Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy SavingHebei University of Technology Tianjin 300130 People's Republic of China
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12
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Garazhian Z, Rezaeifard A, Jafarpour M. A nanoscopic icosahedral {Mo72Fe30} cluster catalyzes the aerobic synthesis of benzimidazoles. RSC Adv 2019; 9:34854-34861. [PMID: 35530665 PMCID: PMC9074170 DOI: 10.1039/c9ra06581d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 10/19/2019] [Indexed: 01/20/2023] Open
Abstract
In this study, the catalytic efficiency of amorphous {Mo72Fe30} nanocapsules as a safe Keplerate polyoxometalate in organic synthesis was exploited. The easy-made solid catalyst exhibited high efficiency using a very low dosage (0.02–0.05 mol%) in the catalyzed condensation of various aromatic 1,2-diamines and aldehydes for the aerobic synthesis of benzimidazoles with very small E-factor values (0.11–0.33). The superior catalytic activity of amorphous nanoclusters compared to that of its crystalline counterpart was demonstrated. The high activity and recyclability of heterogeneous catalysts in a green reaction media under oxygen atmosphere, make this environmentally benign organic process appropriate for our applied goals. Catalytic activity of amorphous {Mo72Fe30} nanoclusters as a safe Keplerate polyoxometalate in aerobic synthesis of benzimidazoles was described.![]()
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Affiliation(s)
- Zohreh Garazhian
- Catalysis Research Laboratory
- Department of Chemistry
- Faculty of Science
- University of Birjand
- Birjand
| | - Abdolreza Rezaeifard
- Catalysis Research Laboratory
- Department of Chemistry
- Faculty of Science
- University of Birjand
- Birjand
| | - Maasoumeh Jafarpour
- Catalysis Research Laboratory
- Department of Chemistry
- Faculty of Science
- University of Birjand
- Birjand
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13
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Visible-light-induced 1,2-alkylarylation of alkenes with a-C(sp3)–H bonds of acetonitriles involving neophyl rearrangement under transition-metal-free conditions. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.11.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Gandeepan P, Müller T, Zell D, Cera G, Warratz S, Ackermann L. 3d Transition Metals for C-H Activation. Chem Rev 2018; 119:2192-2452. [PMID: 30480438 DOI: 10.1021/acs.chemrev.8b00507] [Citation(s) in RCA: 1424] [Impact Index Per Article: 237.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
C-H activation has surfaced as an increasingly powerful tool for molecular sciences, with notable applications to material sciences, crop protection, drug discovery, and pharmaceutical industries, among others. Despite major advances, the vast majority of these C-H functionalizations required precious 4d or 5d transition metal catalysts. Given the cost-effective and sustainable nature of earth-abundant first row transition metals, the development of less toxic, inexpensive 3d metal catalysts for C-H activation has gained considerable recent momentum as a significantly more environmentally-benign and economically-attractive alternative. Herein, we provide a comprehensive overview on first row transition metal catalysts for C-H activation until summer 2018.
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Affiliation(s)
- Parthasarathy Gandeepan
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Thomas Müller
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Daniel Zell
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Gianpiero Cera
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Svenja Warratz
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
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15
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Saha M, Das AR. I2/TBHP promoted oxidative C–N bond formation at room temperature: Divergent access of 2-substituted benzimidazoles involving ring distortion. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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16
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Elejalde N, Macías M, Castillo J, Sortino M, Svetaz L, Zacchino S, Portilla J. Synthesis and
in vitro
Antifungal Evaluation of Novel
N
‐Substituted 4‐Aryl‐2‐methylimidazoles. ChemistrySelect 2018. [DOI: 10.1002/slct.201801238] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Nerith‐Rocio Elejalde
- Departamento de QuímicaUniversidad de los Andes Carrera 1 N° 18 A-12, Bogotá Colombia
| | - Mario Macías
- Departamento de QuímicaUniversidad de los Andes Carrera 1 N° 18 A-12, Bogotá Colombia
| | - Juan‐Carlos Castillo
- Departamento de QuímicaUniversidad de los Andes Carrera 1 N° 18 A-12, Bogotá Colombia
| | - Maximiliano Sortino
- Pharmacognosy AreaFaculty of Biochemical and Pharmaceutical Sciences.Universidad Nacional de Rosario Suipacha 531 2000-Rosario Argentina
| | - Laura Svetaz
- Pharmacognosy AreaFaculty of Biochemical and Pharmaceutical Sciences.Universidad Nacional de Rosario Suipacha 531 2000-Rosario Argentina
| | - Susana Zacchino
- Pharmacognosy AreaFaculty of Biochemical and Pharmaceutical Sciences.Universidad Nacional de Rosario Suipacha 531 2000-Rosario Argentina
| | - Jaime Portilla
- Departamento de QuímicaUniversidad de los Andes Carrera 1 N° 18 A-12, Bogotá Colombia
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17
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Hu Z, Hou J, Liu J, Yu W, Chang J. Synthesis of imidazo[1,5-a]pyridines via I2-mediated sp3 C–H amination. Org Biomol Chem 2018; 16:5653-5660. [DOI: 10.1039/c8ob01501e] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A transition-metal-free sp3 C–H amination reaction has been developed employing molecular iodine for imidazo[1,5-a]pyridine synthesis.
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Affiliation(s)
- Zhiyuan Hu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Jiao Hou
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Jie Liu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Wenquan Yu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Junbiao Chang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
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18
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Mahesh D, Satheesh V, Kumar SV, Punniyamurthy T. Copper(II)-Catalyzed Oxidative Coupling of Anilines, Methyl Arenes, and TMSN3 via C(sp3/sp2)–H Functionalization and C–N Bond Formation. Org Lett 2017; 19:6554-6557. [DOI: 10.1021/acs.orglett.7b03264] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Devulapally Mahesh
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Vanaparthi Satheesh
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Sundaravel Vivek Kumar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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19
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Arepally S, Babu VN, Bakthadoss M, Sharada DS. A Direct Cycloaminative Approach to Imidazole Derivatives via Dual C–H Functionalization. Org Lett 2017; 19:5014-5017. [DOI: 10.1021/acs.orglett.7b01840] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Sagar Arepally
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Kandi 502 285, Sangareddy, Telangana, India
| | - Venkata Nagarjuna Babu
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Kandi 502 285, Sangareddy, Telangana, India
| | | | - Duddu S. Sharada
- Department
of Chemistry, Indian Institute of Technology Hyderabad, Kandi 502 285, Sangareddy, Telangana, India
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20
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Wu X, Zhao P, Geng X, Zhang J, Gong X, Wu YD, Wu AX. Direct Oxidative Cleavage of Multiple Csp3–H Bonds and a C–C Bond in 2-(Pyridin-2-yl)acetate Derivatives: Formal [3 + 1 + 1] Synthesis of 3-(Pyridin-2-yl)indolizine Skeletons. Org Lett 2017; 19:3319-3322. [DOI: 10.1021/acs.orglett.7b01492] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Xia Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Peng Zhao
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Xiao Geng
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Jingjing Zhang
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Xingxing Gong
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yan-dong Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - An-xin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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21
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Wang H, Xu W, Xin L, Liu W, Wang Z, Xu K. Synthesis of 1,3-Disubstituted Imidazo[1,5-a]pyridines from Amino Acids via Catalytic Decarboxylative Intramolecular Cyclization. J Org Chem 2016; 81:3681-7. [DOI: 10.1021/acs.joc.6b00343] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Huiqiao Wang
- College of Chemistry and
Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
| | - Wentao Xu
- College of Chemistry and
Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
| | - Lilan Xin
- College of Chemistry and
Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
| | - Wenmin Liu
- College of Chemistry and
Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
| | - Zhiqiang Wang
- College of Chemistry and
Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
| | - Kun Xu
- College of Chemistry and
Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
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22
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Wang J, Zhao C, Weng Y, Xu H. Insight into the mechanism and site-selectivity of Rh2II,II(esp)2-catalyzed intermolecular C–H amination. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00505e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanisms and site-selective determinants of Rh2II,II(esp)2-catalyzed intermolecular C–H bond aminations of three isoamylbenzene-derived substrates, p-R–C6H4(CH2)2CH(CH3)2 (R = OCH3, H, CF3), have been investigated by the density functional theory (BPW91) method.
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Affiliation(s)
- Juping Wang
- School of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou
- PR China
| | - Cunyuan Zhao
- School of Chemistry and Chemical Engineering
- Sun Yat-sen University
- Guangzhou
- PR China
| | - Yuping Weng
- School of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou
- PR China
| | - Huiying Xu
- School of Chemistry and Chemical Engineering
- Sun Yat-sen University
- Guangzhou
- PR China
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23
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Rao WH, Shi BF. Recent advances in copper-mediated chelation-assisted functionalization of unactivated C–H bonds. Org Chem Front 2016. [DOI: 10.1039/c6qo00156d] [Citation(s) in RCA: 205] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Recent advances in copper-mediated (both stoichiometric and catalytic) chelation-assisted functionalization of unactivated C–H bonds are reviewed.
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Affiliation(s)
- Wei-Hao Rao
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Bing-Feng Shi
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
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24
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Xie Z, Deng J, Qiu Z, Li J, Zhu Q. Copper-mediated C(sp3)–H azidation with Me3SiN3: synthesis of imidazoles from ketones and aldehydes. Chem Commun (Camb) 2016; 52:6467-70. [DOI: 10.1039/c6cc01863g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The efficient construction of 2,4,5-trisubstituted imidazoles, through a copper-mediated three-component reaction involving ketones, aldehydes, and Me3SiN3, has been developed.
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Affiliation(s)
- Zeqiang Xie
- State Key Laboratory of Respiratory Disease
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
| | - Jiaojiao Deng
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Zhiping Qiu
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Juan Li
- Department of Chemistry
- Jinan University
- Guangzhou 510632
- China
| | - Qiang Zhu
- State Key Laboratory of Respiratory Disease
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
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25
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Wu YD, Geng X, Gao Q, Zhang J, Wu X, Wu AX. Iodine-promoted sequential dual oxidative Csp3–H amination/Csp3–H iodination reactions: efficient synthesis of 1-iodoimidazo[1,5-a]pyridines. Org Chem Front 2016. [DOI: 10.1039/c6qo00313c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iodine-promoted sequential dual oxidative Csp3–H amination of aryl methyl ketones and Csp3–H iodination of pyridin-2-ylmethanamines have been realized for the first time. This simple and efficient approach constructed 1-iodoimidazo[1,5-a]pyridines in moderate to good yields.
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Affiliation(s)
- Yan-Dong Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Xiao Geng
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Qinghe Gao
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Jingjing Zhang
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Xia Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
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