1
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Zhao WW, Tian MY, Zhou YL, Liu LJ, Tian SF, He CY, Yang XZ, Chen YZ, Han WY. Trifluoromethyl Rhodium-Carbynoid in [2+1+2] Cycloadditions. Angew Chem Int Ed Engl 2024; 63:e202318887. [PMID: 38237082 DOI: 10.1002/anie.202318887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Indexed: 02/24/2024]
Abstract
Trifluoromethyl cationic carbyne (CF3 C+ :) possessing dual carbene-carbocation behavior emulated as trifluoromethyl metal-carbynoid (CF3 C+ =M) has not been explored yet, and its reaction characteristics are unknown. Herein, a novel α-diazotrifluoroethyl sulfonium salt was prepared and used in Rh-catalyzed three-component [2+1+2] cycloadditions for the first time with commercially available N-fused heteroarenes and nitriles, yielding a series of imidazo[1,5-a] N-heterocycles that are of interest in medicinal chemistry, in which the insertion of trifluoromethyl Rh-carbynoid (CF3 C+ =Rh) into C=N bonds of N-fused heteroarenes was involved. This strategy demonstrates synthetic applications in late-stage modification of pharmaceuticals, construction of CD3 -containing N-heterocycles, gram-scale experiments, and synthesis of phosphodiesterase 10A inhibitor analog. These highly valuable and modifiable imidazo[1,5-a] N-heterocycles exhibit good antitumor activity in vitro, thus demonstrating their potential applications in medicinal chemistry.
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Affiliation(s)
- Wen-Wen Zhao
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., 563006, Zunyi, China
| | - Meng-Yang Tian
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., 563006, Zunyi, China
| | - Yi-Lin Zhou
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., 563006, Zunyi, China
| | - Lu-Jie Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., 563006, Zunyi, China
| | - Shao-Fang Tian
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., 563006, Zunyi, China
| | - Chun-Yang He
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., 563006, Zunyi, China
- Key Laboratory of Basic Pharmacology of Ministry of Education, Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, No. 6 West Xuefu Rd., 563006, Zunyi, China
| | - Xing-Zhi Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132 Lanhei Road, 650201, Kunming, China
| | - Yong-Zheng Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., 563006, Zunyi, China
- Key Laboratory of Basic Pharmacology of Ministry of Education, Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, No. 6 West Xuefu Rd., 563006, Zunyi, China
| | - Wen-Yong Han
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, No. 6 West Xuefu Rd., 563006, Zunyi, China
- Key Laboratory of Basic Pharmacology of Ministry of Education, Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, No. 6 West Xuefu Rd., 563006, Zunyi, China
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2
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Wang Z, Li X, Qiu J, Li W, Li H, Weng Z, Li H. Modular Access to 2-(Trifluoromethyl)pyrazolo[1,5- a]pyridines and Their Benzo Analogues through a Copper(I)-Catalyzed Radical Annulation. Org Lett 2022; 24:6292-6297. [PMID: 36005387 DOI: 10.1021/acs.orglett.2c02500] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A mechanistically distinctive copper-catalyzed radical annulation to valuable 2-(trifluoromethyl)pyrazolo[1,5-a]pyridines and their benzo analogues has been described for the first time. Notably, the newly developed complementary process allows the synthesis of 4- or 6-substituted target molecular entities as a single product, which was previously challenging to access by existing methods. The utility of this process is further demonstrated by the facile construction of four different ring systems, a gram-scale synthesis, and the late-stage functionalization of bioactive molecules.
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Affiliation(s)
- Zhenhui Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Xiaofeng Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jie Qiu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Wei Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Hengyuan Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Zhiqiang Weng
- Fujian Engineering Research Center of New Chinese Lacquer Material, Ocean College, Minjiang University, Fuzhou 350108, China
| | - Huaifeng Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
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3
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Ramana Reddy M, Darapaneni CM, Patil RD, Kumari H. Recent synthetic methodologies for imidazo[1,5- a]pyridines and related heterocycles. Org Biomol Chem 2022; 20:3440-3468. [PMID: 35394477 DOI: 10.1039/d2ob00386d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Imidazo[1,5-a]pyridine is a significant structural component of a large number of agrochemicals and pharmaceuticals. The synthesis of imidazo[1,5-a]pyridine has been a subject of intense research for numerous decades. A large number of transformations are now available to conveniently access imidazo[1,5-a]pyridine from readily available starting materials. This review details the recent development in imidazo[1,5-a]pyridine construction involving cyclocondensation, cycloaddition, oxidative cyclization, and transannulation reactions.
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Affiliation(s)
- Mittapalli Ramana Reddy
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio, USA, 45267-0514.
| | | | - Rajendra D Patil
- School of Chemical Sciences, Moolji Jaitha College, Jalgaon, Maharashratra, India, 425001
| | - Harshita Kumari
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio, USA, 45267-0514.
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4
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Wang Q, Yao X, Xu XJ, Zhang S, Ren L. Electrochemical [4 + 1] Tandem sp 3(C-H) Double Amination for the Direct Synthesis of 3-Acyl-Functionalized Imidazo[1,5- a]pyridines. ACS OMEGA 2022; 7:4305-4310. [PMID: 35155923 PMCID: PMC8829863 DOI: 10.1021/acsomega.1c06029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 01/18/2022] [Indexed: 06/14/2023]
Abstract
3-Acyl imidazo[1,5-a]pyridines, featured pharmaceutical moieties that were prepared by a three-step reaction conventionally, could be obtained in one step by an electrochemical tandem sp3 (C-H) double amination of acetophenones with pyridine ethylamines using ammonium iodide as a redox mediator.
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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
| | - Xia Yao
- Research
Center For Biomedical And Health Science, Anhui Science and Technology University, Fengyang 233100, P. R. China
| | - Xian-jing Xu
- Research
Center For Biomedical And Health Science, Anhui Science and Technology University, Fengyang 233100, P. R. China
| | - Shuai Zhang
- Nanjing
Harris Bio-Pharmaceutical Technology Co., Ltd., Nanjing, Jiangsu 210000, China
| | - Lei Ren
- Department
of Material and Chemical Engineering, Bengbu
University, Bengbu, Anhui 233030, P. R. China
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5
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6
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Chen J, Wen K, Wu Y, Deng J, Chen H, Yao X, Tang X. Synthesis of 3,4,5‐Triarylcyclohexanones from Dienones and 2‐Methylquinolines Based on a [5+1] Annulation. ChemistrySelect 2021. [DOI: 10.1002/slct.202103317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jiewen Chen
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University 1023 South Shatai Road, Baiyun District Guangzhou 510515 P. R. China
| | - Kangmei Wen
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University 1023 South Shatai Road, Baiyun District Guangzhou 510515 P. R. China
| | - Yinrong Wu
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University 1023 South Shatai Road, Baiyun District Guangzhou 510515 P. R. China
| | - Jie Deng
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University 1023 South Shatai Road, Baiyun District Guangzhou 510515 P. R. China
| | - Hongyue Chen
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University 1023 South Shatai Road, Baiyun District Guangzhou 510515 P. R. China
| | - Xingang Yao
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University 1023 South Shatai Road, Baiyun District Guangzhou 510515 P. R. China
| | - Xiaodong Tang
- Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical Sciences Southern Medical University 1023 South Shatai Road, Baiyun District Guangzhou 510515 P. R. China
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7
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Shen J, Jiang X, Wu H, Xu J, Zhu Q, Zhang P. Copper-catalyzed selective oxidation of hydrazones through C(sp 3)-H functionalization. Org Biomol Chem 2021; 19:8917-8923. [PMID: 34617555 DOI: 10.1039/d1ob01563j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A simple and mild protocol for copper-catalyzed oxidation of hydrazones at the α-position has been reported. Various substrates are compatible, providing the corresponding products in moderate to good yields. This strategy provides an efficient and convenient solution for the synthesis of carbonyl hydrazone. A free radical pathway mechanism is suggested for the transformation.
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Affiliation(s)
- Jiabin Shen
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China. .,College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
| | - Xiaoying Jiang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China. .,College of Chemistry and Chemical Engineering, Central south University, Changsha, 410083, P.R. China
| | - Haifeng Wu
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China. .,College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
| | - Jun Xu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
| | - Qing Zhu
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Pengfei Zhang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
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8
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Zhang X, Miao X, Jiang H, Ge F, Sun J, Zhang R, Ouyang Q, Fan W, Zhu Y, Sun Y. Iodine‐Promoted Synthesis of Dipyrazolo/Diuracil‐Fused Pyridines and
o
‐Amino Diheteroaryl ketones via Oxidative Domino Annulation of 2/4‐Methylazaarenes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100839] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xin‐Ke Zhang
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Xiao‐Yu Miao
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Hui‐Ru Jiang
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Fei Ge
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Jia‐Chen Sun
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Rui‐Ying Zhang
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Qin Ouyang
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Wei‐Yu Fan
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Yan‐Ping Zhu
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
| | - Yuan‐Yuan Sun
- School of Pharmacy Key Laboratory of Molecular Pharmacology and Drug Evaluation Ministry of Education Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong Yantai University Shandong Yantai 264005 People's Republic of China
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9
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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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10
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Ma ST, Zhu XX, Xu JY, Li Y, Zhang XM, Feng CT, Yan Y. Iodide-promoted transformations of imidazopyridines into sulfur-bridged imidazopyridines or 1,2,4-thiadiazoles. Chem Commun (Camb) 2021; 57:5338-5341. [PMID: 33928973 DOI: 10.1039/d1cc01044a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A NaI-promoted sequential double carbon-sulfur bond formation was developed to afford sulfur-bridged imidazopyridines, using Deoxofluor as the sulfur source and requiring only 15 min at room temperature. Using this process, imidazo[1,5-a]pyridines could also be transformed to 1,2,4-thiadiazoles in the presence of ammonium salt with the formation of both carbon-sulfur and nitrogen-sulfur bonds. This mechanistically unique method is distinguished by its wide substrate scope, lack of requirement for transition metals and mild conditions.
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Affiliation(s)
- Shi-Tang Ma
- Life and Health College, Anhui Science and Technology University, Fengyang, 233100, China and School of Chemical Engineering, Anhui University of Science and Technology, Huainan, 232001, China.
| | - Xiao-Xiao Zhu
- School of Chemical Engineering, Anhui University of Science and Technology, Huainan, 232001, China.
| | - Jing-Yu Xu
- School of Chemical Engineering, Anhui University of Science and Technology, Huainan, 232001, China.
| | - Ying Li
- School of Chemical Engineering, Anhui University of Science and Technology, Huainan, 232001, China.
| | - Xiao-Mei Zhang
- School of Chemical Engineering, Anhui University of Science and Technology, Huainan, 232001, China.
| | - Cheng-Tao Feng
- School of Chemical Engineering, Anhui University of Science and Technology, Huainan, 232001, China.
| | - Yizhe Yan
- College of Food and Bioengineering, Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou University of Light Industry, Zhengzhou, 450000, China.
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11
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12
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Chen Y, Xia L, Chang Y, Ma W, Wang B. Application of N-Alkyl Amines as Versatile Building Blocks in Oxidative Coupling Reactions. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202009034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Sandeep M, Shantharjun B, Pradeep Kumar G, Rajender Reddy K. Oxidative Copper‐Catalyzed Regioselective Trifluoromethylation of Fused Imidazo[1,5‐
a
]‐
N
‐heteroarenes using Langlois Reagent. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001266] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Mummadi Sandeep
- Catalysis and Fine Chemicals Division, CSIR– Indian Institute of Chemical Technology, Tarnaka Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002, U.P India
| | - Bangarigalla Shantharjun
- Catalysis and Fine Chemicals Division, CSIR– Indian Institute of Chemical Technology, Tarnaka Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002, U.P India
| | - Geetala Pradeep Kumar
- Catalysis and Fine Chemicals Division, CSIR– Indian Institute of Chemical Technology, Tarnaka Hyderabad 500007 India
- IICT-RMIT Joint Research Centre CSIR-IICT, Tarnaka Hyderabad 500007 India
| | - Kallu Rajender Reddy
- Catalysis and Fine Chemicals Division, CSIR– Indian Institute of Chemical Technology, Tarnaka Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002, U.P India
- IICT-RMIT Joint Research Centre CSIR-IICT, Tarnaka Hyderabad 500007 India
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14
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Chen S, Bai R, Li M, Liu P, Gu Y. Acid‐Acid‐Catalyzed Tandem Reactions Driven by an Additive‐Like Component. CHEM REC 2020. [DOI: 10.1002/tcr.202000097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shaomin Chen
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P.R. China
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical Engineering Shihezi University Shihezi 832004 P.R. China
| | - Rongxian Bai
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P.R. China
| | - Minghao Li
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P.R. China
| | - Ping Liu
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical Engineering Shihezi University Shihezi 832004 P.R. China
| | - Yanlong Gu
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 P.R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Lanzhou 730000 P.R. China
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15
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Zhang J, Zheng T, Zhang J. I2
/K2
S2
O8
Mediated Direct Oxidative Annulation of Alkylazaarenes with Amidines for the Synthesis of Substituted 1,3,5-Triazines. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901737] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jun Zhang
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule; College of Chemistry & Materials Science; Northwest University; 710127 Xi'an Shaanxi P. R. China
| | - Tingting Zheng
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule; College of Chemistry & Materials Science; Northwest University; 710127 Xi'an Shaanxi P. R. China
| | - Jidong Zhang
- School of Chemistry & Chemical Engineering; Ankang University; 725000 Ankang Shaanxi P. R. China
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16
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Sandeep M, Muzaffar-ur-Rehman MD, Pradeep Kumar G, Sridhar B, Reddy KR. One-Pot Synthesis of 3-Sulfenyl/Selenylimidazo[1,5- a
]quinolines from 2-Methylquinolines, Aliphatic Amines/Amino Acids, and Dichalcogenides. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Mummadi Sandeep
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 110025 New Delhi India
| | - MD. Muzaffar-ur-Rehman
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad India
| | - Geetala Pradeep Kumar
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad India
- CSIR-IICT; IICT-RMIT Joint Research Centre; 500007 Hyderabad India
| | - Balasubramanian Sridhar
- X-ray Crystallography Division; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
| | - Kallu Rajender Reddy
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 110025 New Delhi India
- CSIR-IICT; IICT-RMIT Joint Research Centre; 500007 Hyderabad India
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17
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Affiliation(s)
- Fengtian Wu
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and DevicesEast China University of Technology Guanglan Road Nanchang 330013 P. R. China
| | - Mingyang Ma
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and DevicesEast China University of Technology Guanglan Road Nanchang 330013 P. R. China
| | - Jianwei Xie
- College of Chemistry and BioengineeringHunan University of Science and Engineering Yangzitang Road Yongzhou 425100 P. R. China
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18
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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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19
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Storozhenko OA, Festa AA, Bella Ndoutoume DR, Aksenov AV, Varlamov AV, Voskressensky LG. Mn-mediated sequential three-component domino Knoevenagel/cyclization/Michael addition/oxidative cyclization reaction towards annulated imidazo[1,2- a]pyridines. Beilstein J Org Chem 2019; 14:3078-3087. [PMID: 30643585 PMCID: PMC6317425 DOI: 10.3762/bjoc.14.287] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 11/26/2018] [Indexed: 12/14/2022] Open
Abstract
The sequential three-component reaction between o-hydroxybenzaldehydes, N-(cyanomethyl)pyridinium salts and a nucleophile towards substituted chromenoimidazopyridines under oxidative conditions has been developed. The employment of Mn(OAc)3·2H2O or KMnO4 as stoichiometric oxidants allowed the use of a wide range of nucleophiles, such as nitromethane, (aza)indoles, pyrroles, phenols, pyrazole, indazole and diethyl malonate. The formation of the target compounds presumably proceeds through a domino Knoevenagel/cyclization/Michael addition/oxidative cyclization reaction sequence.
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Affiliation(s)
- Olga A Storozhenko
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st. 6, 117198 Moscow, Russian Federation
| | - Alexey A Festa
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st. 6, 117198 Moscow, Russian Federation
| | - Delphine R Bella Ndoutoume
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st. 6, 117198 Moscow, Russian Federation
| | - Alexander V Aksenov
- Department of Chemistry, North Caucasus Federal University, Pushkin st. 1a, 355009 Stavropol, Russian Federation
| | - Alexey V Varlamov
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st. 6, 117198 Moscow, Russian Federation
| | - Leonid G Voskressensky
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya st. 6, 117198 Moscow, Russian Federation
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20
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Qian P, Yan Z, Zhou Z, Hu K, Wang J, Li Z, Zha Z, Wang Z. Electrocatalytic Intermolecular C(sp3)–H/N–H Coupling of Methyl N-Heteroaromatics with Amines and Amino Acids: Access to Imidazo-Fused N-Heterocycles. Org Lett 2018; 20:6359-6363. [DOI: 10.1021/acs.orglett.8b02578] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peng Qian
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zicong Yan
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhenghong Zhou
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Kangfei Hu
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jiawei Wang
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhibin Li
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhenggen Zha
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhiyong Wang
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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21
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Xiao F, Liu C, Yuan S, Huang H, Deng GJ. A Four-Component Reaction for the Synthesis of β-Quinoline Allylic Sulfones under Iron Catalysis. J Org Chem 2018; 83:10420-10429. [DOI: 10.1021/acs.joc.8b01486] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fuhong Xiao
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Chao Liu
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Shanshan Yuan
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
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22
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Qin M, Tian Y, Guo X, Yuan X, Yang X, Chen B. I 2
/TBPB Mediated Oxidative Reaction to Construct of Imidazo[1,5-α]pyridines under Metal-Free Conditions. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800285] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Mingda Qin
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 China
| | - Yuan Tian
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 China
| | - Xin Guo
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 China
| | - Xinglong Yuan
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 China
| | - Xueying Yang
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 China
| | - Baohua Chen
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 China
- Zhongwei High-tech Institute of Lanzhou University; Zhongwei Ningxia 755500 China
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23
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Sandeep M, Swati Dushyant P, Sravani B, Rajender Reddy K. Direct Access to Halogenated Fused Imidazo[1,5-a
]N
-heteroaromatics through Copper-Promoted Double Oxidative C-H Amination and Halogenation. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800628] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mummadi Sandeep
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; 500007 Tarnaka, Hyderabad India
- Academy of Scientific and Innovative Research; 110025 New Delhi India
| | - Patil Swati Dushyant
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; 500007 Tarnaka, Hyderabad India
| | - Boda Sravani
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; 500007 Tarnaka, Hyderabad India
| | - Kallu Rajender Reddy
- Catalysis and Fine Chemicals Division; CSIR-Indian Institute of Chemical Technology; 500007 Tarnaka, Hyderabad India
- Academy of Scientific and Innovative Research; 110025 New Delhi India
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24
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Bi WZ, Qu C, Chen XL, Wei SK, Qu LB, Liu SY, Sun K, Zhao YF. Copper(II) catalyzed heterobenzylic C(sp3)-H activation: Two efficient halogenation methodologies towards heterobenzyl halides. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Bazin HG, Bess LS, Livesay MT. Synthesis and Applications of Imidazoquinolines: A Review. ORG PREP PROCED INT 2018. [DOI: 10.1080/00304948.2018.1433427] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Hélène G. Bazin
- Biomedical & Pharmaceutical Science, University of Montana, 32 Campus Drive #1552, Missoula, MT 59812, USA
| | - Laura S. Bess
- Biomedical & Pharmaceutical Science, University of Montana, 32 Campus Drive #1552, Missoula, MT 59812, USA
| | - Mark T. Livesay
- Biomedical & Pharmaceutical Science, University of Montana, 32 Campus Drive #1552, Missoula, MT 59812, USA
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26
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Yan Z, Wan C, Yang Y, Zha Z, Wang Z. The synthesis of imidazo[1,5-a]quinolinesviaa decarboxylative cyclization under metal-free conditions. RSC Adv 2018; 8:23058-23065. [PMID: 35540158 PMCID: PMC9081590 DOI: 10.1039/c8ra03786h] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 06/15/2018] [Indexed: 11/21/2022] Open
Abstract
An iodine-mediated decarboxylative cyclization was developed from α-amino acids and 2-methyl quinolines under metal-free conditions, affording a variety of imidazo[1,5-a]quinolines with moderate to good yields. An iodine-mediated decarboxylative cyclization was developed from α-amino acids and 2-methyl quinolines under metal-free conditions, affording a variety of imidazo[1,5-a]quinolines with moderate to good yields.![]()
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Affiliation(s)
- Zicong Yan
- Hefei National Laboratory for Physical Sciences at Microscale
- CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences
- Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
| | - Changfeng Wan
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang
- P. R. China
| | - Yu Yang
- Hefei National Laboratory for Physical Sciences at Microscale
- CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences
- Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
| | - Zhenggen Zha
- Hefei National Laboratory for Physical Sciences at Microscale
- CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences
- Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
| | - Zhiyong Wang
- Hefei National Laboratory for Physical Sciences at Microscale
- CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences
- Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
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27
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Bori J, Behera N, Mahata S, Manivannan V. Synthesis of Imidazo[5, 1- a
]isoquinoline and Its 3-Substituted Analogues Including the Fluorescent 3-(1-Isoquinolinyl)imidazo[5, 1- a
]isoquinoline. ChemistrySelect 2017. [DOI: 10.1002/slct.201702420] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jugal Bori
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati - 781039, Assam India
| | - Nibedita Behera
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati - 781039, Assam India
| | - Satyajit Mahata
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati - 781039, Assam India
| | - Vadivelu Manivannan
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati - 781039, Assam India
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28
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Jia X, Hou W, Shao Y, Yuan Y, Chen Q, Li P, Liu X, Ji H. A Consecutive C−H Functionalization Triggered by Oxidation of Active sp3C−H Bonds: Construction of 3,4-Dihydroquinoline-3-one Derivatives. Chemistry 2017; 23:12980-12984. [PMID: 28688131 DOI: 10.1002/chem.201702497] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Indexed: 01/13/2023]
Affiliation(s)
- Xiaodong Jia
- School of Chemistry & Chemical Engineering; Yangzhou University; Siwangting Road 180, Yangzhou Jiangsu 225002 China
| | - Wentao Hou
- College of Chemistry & Chemical Engineering; Northwest Normal University; Anning East Road 967, Lanzhou Gansu 730070 China
| | - Yu Shao
- School of Information Engineering; Yangzhou University; Huayang West Road 196, Yangzhou Jiangsu 225127 China
| | - Yu Yuan
- School of Chemistry & Chemical Engineering; Yangzhou University; Siwangting Road 180, Yangzhou Jiangsu 225002 China
| | - Qian Chen
- School of Chemistry & Chemical Engineering; Yangzhou University; Siwangting Road 180, Yangzhou Jiangsu 225002 China
| | - Pengfei Li
- College of Chemistry & Chemical Engineering; Northwest Normal University; Anning East Road 967, Lanzhou Gansu 730070 China
| | - Xiaofei Liu
- College of Chemistry & Chemical Engineering; Northwest Normal University; Anning East Road 967, Lanzhou Gansu 730070 China
| | - Honghe Ji
- College of Chemistry & Chemical Engineering; Northwest Normal University; Anning East Road 967, Lanzhou Gansu 730070 China
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29
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Oxidative C sp3 -H functionalization of 2-methylazaarenes: A practical synthesis of 2-azaarenyl-benzimidazoles and benzothiazoles. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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30
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Lee JY, Shim JY, Kim HK, Ko D, Baik MH, Yoo EJ. 3,5-Diarylimidazo[1,2-a]pyridines as Color-Tunable Fluorophores. J Org Chem 2017; 82:4352-4361. [PMID: 28350465 DOI: 10.1021/acs.joc.7b00358] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new protocol for the synthesis of color-tunable fluorescent 3,5-diarylimidazo[1,2-a]pyridines has been achieved via palladium-catalyzed C-H amination of pyridinium zwitterions. Based on experimental results and computational analysis, we extracted a high correlation of photophysical properties with the theoretical concept and predicted emission wavelengths of 3,5-diarylimidazo[1,2-a]pyridines. The emission wavelengths of imidazo[1,2-a]pyridines increase as a function of the electron-withdrawing nature of the substituent on the C5-aryl group of imidazo[1,2-a]pyridine as a result of inductive effects on the LUMO levels. Varying the substituent on the C3-aryl group imidazo[1,2-a]pyridine changes the HOMO levels. Combining these two sites, the HOMO and LUMO levels can be tuned fairly decoupled from each other. This conceptual trend is demonstrated across a series where the C3 and C5 positions were functionalized independently and then utilizes a combination strategy where both sites are used to prepare fluorophores with a large window of emission wavelengths. In view of the biological properties of imidazo[1,2-a]pyridines, the developed method provides an efficient approach for understanding and preparing strongly fluorescent bioprobes.
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Affiliation(s)
- Ju Young Lee
- Department of Chemistry, Kangwon National University , 1 Kangwondaehak-gil, Chuncheon 24341, South Korea
| | - Jae Yul Shim
- Department of Chemistry, Kangwon National University , 1 Kangwondaehak-gil, Chuncheon 24341, South Korea
| | - Hong Ki Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS) , Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, South Korea
| | - Donguk Ko
- Department of Chemistry, Kangwon National University , 1 Kangwondaehak-gil, Chuncheon 24341, South Korea
| | - Mu-Hyun Baik
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS) , Daejeon 34141, South Korea.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, South Korea
| | - Eun Jeong Yoo
- Department of Chemistry, Kangwon National University , 1 Kangwondaehak-gil, Chuncheon 24341, South Korea
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31
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Feng TY, Li HX, Young DJ, Lang JP. Ligand-Free RuCl3-Catalyzed Alkylation of Methylazaarenes with Alcohols. J Org Chem 2017; 82:4113-4120. [DOI: 10.1021/acs.joc.6b03095] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Tong-Yu Feng
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou 215123, Jiangsu, People’s Republic of China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People’s Republic of China
| | - Hong-Xi Li
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou 215123, Jiangsu, People’s Republic of China
| | - David James Young
- Faculty
of Science and Engineering, University of the Sunshine Coast, Maroochydore
DC, Queensland 4558, Australia
| | - Jian-Ping Lang
- State
and Local Joint Engineering Laboratory for Novel Functional Polymeric
Materials, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou 215123, Jiangsu, People’s Republic of China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People’s Republic of China
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32
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Singh D, Kumar V, Devi N, Malakar CC, Shankar R, Singh V. Metal-free Decarboxylative Amination: An Alternative Approach Towards Regioselective Synthesis of β-CarbolineN-fused Imidazoles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600970] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Dharmender Singh
- Department of Chemistry; National Institute of Technology (NIT); Jalandhar 144011 Punjab India
| | - Vipin Kumar
- Department of Chemistry; National Institute of Technology (NIT); Jalandhar 144011 Punjab India
| | - Nisha Devi
- Department of Chemistry; National Institute of Technology (NIT); Jalandhar 144011 Punjab India
| | - Chandi C. Malakar
- Department of Chemistry; National Institute of Technology (NIT) Manipur; Imphal 795004 Manipur India
| | - Ravi Shankar
- Bio-Organic Chemistry Division; CSIR - Indian Institute of Integrative Medicine (IIIM); Jammu 180001 India
| | - Virender Singh
- Department of Chemistry; National Institute of Technology (NIT); Jalandhar 144011 Punjab India
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33
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Baeten M, Maes BU. Carbon–Nitrogen Bond Formation Through Cross-Dehydrogenative Coupling Reactions. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2017. [DOI: 10.1016/bs.adomc.2017.04.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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34
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Wu SS, Feng CT, Hu D, Huang YK, Li Z, Luo ZG, Ma ST. Iodine-catalyzed direct C–H thiolation of imidazo[1,5-a]quinolines for the synthesis of 3-sulfenylimidazo[1,5-a]quinolines. Org Biomol Chem 2017; 15:1680-1685. [DOI: 10.1039/c6ob02736a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iodine-catalyzed regioselective sulfenylation of imidazo[1,5-a]quinolines was developed under metal- and oxidant-free reaction conditions.
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Affiliation(s)
- Song-Song Wu
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- PR China
| | - Cheng-Tao Feng
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- PR China
| | - Di Hu
- School of Pharmacy
- Harbin University of Commerce
- Harbin
- PR China
| | - Ye-Kai Huang
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- PR China
| | - Zhong Li
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- PR China
| | - Zai-Gang Luo
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- PR China
| | - Shi-Tang Ma
- College of Food and Drug
- Anhui Science and Technology University
- Fengyang
- PR China
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35
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Tan Z, Zhao H, Zhou C, Jiang H, Zhang M. Aerobic Copper-Catalyzed Halocyclization of Methyl N-Heteroaromatics with Aliphatic Amines: Access to Functionalized Imidazo-Fused N-Heterocycles. J Org Chem 2016; 81:9939-9946. [PMID: 27690442 DOI: 10.1021/acs.joc.6b02117] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A new aerobic copper-catalyzed halocyclization reaction of methyl N-heteroaromatics and aliphatic amines has been developed, which enables straightforward access to functionalized imidazo-fused N-heterocycles with the merits of good functional tolerance, use of easily available copper salts as the catalysts, lithium halides as the halogen sources, and O2 as a sole oxidant. Due to the reaction features' selective introduction of halogen functionalities to the newly formed imidazo ring, further extensions of the developed chemistry toward synthetic diversity, including effective access to functional materials, are easily envisioned.
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Affiliation(s)
- Zhenda Tan
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510641, China
| | - He Zhao
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510641, China
| | - Changjian Zhou
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510641, China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510641, China
| | - Min Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510641, China
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36
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Jin LK, Lu GP, Cai C. Copper-catalyzed 8-amido chelation-induced regioselective C–H fluoroalkylation of quinolines. Org Chem Front 2016. [DOI: 10.1039/c6qo00369a] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An effective and regioselective approach for C–H fluoroalkylation of 8-aminoquinoline amides with RfSO2Na is demonstrated herein.
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Affiliation(s)
- Li-Kun Jin
- Chemical Engineering College
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Guo-Ping Lu
- Chemical Engineering College
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
| | - Chun Cai
- Chemical Engineering College
- Nanjing University of Science and Technology
- Nanjing 210094
- People's Republic of China
- Key Laboratory of Organofluorine Chemistry
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