1
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Mantry L, Gandeepan P. Visible-Light-Induced PhI(OAc) 2-Mediated Alkylation of Heteroarenes with Simple Alkanes and Ethers. J Org Chem 2024; 89:6539-6544. [PMID: 38642055 DOI: 10.1021/acs.joc.4c00140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2024]
Abstract
The direct alkylation of heteroarenes with alkanes has been successfully achieved through visible-light-induced hypervalent iodine-mediated C-H functionalization of both coupling partners at ambient temperatures. This reaction proceeds via the in situ generation of nucleophilic alkyl radicals from alkanes through hydrogen atom transfer (HAT), followed by a Minisci-type reaction with heteroarenes. These mild reaction conditions have demonstrated their suitability for the alkylation of a wide range of heterocycles, including azoles, pyridines, quinolines, isoquinolines, and quinoxalinones.
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Affiliation(s)
- Lusina Mantry
- Department of Chemistry, Indian Institute of Technology Tirupati, Yerpedu - Venkatagiri Road, Yerpedu Post, Tirupati District, Andhra Pradesh, India - 517619
| | - Parthasarathy Gandeepan
- Department of Chemistry, Indian Institute of Technology Tirupati, Yerpedu - Venkatagiri Road, Yerpedu Post, Tirupati District, Andhra Pradesh, India - 517619
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2
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Roy VJ, Dagar N, Choudhury S, Raha Roy S. Unified Approach to Diverse Heterocyclic Synthesis: Organo-Photocatalyzed Carboacylation of Alkenes and Alkynes from Feedstock Aldehydes and Alcohols. J Org Chem 2023; 88:15374-15388. [PMID: 37871233 DOI: 10.1021/acs.joc.3c01884] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
We report an organo-photocatalyzed carboacylation reaction that offers a springboard to create chemical complexity in a diversity-driven approach. The modular one-pot method uses feedstock aldehydes and alcohols as acyl surrogates and commercially available Eosin Y as the photoredox catalyst, making it simple and affordable to introduce structural diversity. Several biologically relevant skeletons have been easily synthesized under mild conditions in the presence of visible light irradiation by fostering a radical acylation/cyclization cascade. The proposed reaction mechanism was further illuminated by a number of spectroscopic studies. Furthermore, we applied this protocol for the late-stage functionalization of pharmaceuticals and blockbuster drugs.
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Affiliation(s)
- Vishal Jyoti Roy
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Neha Dagar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Swagata Choudhury
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Sudipta Raha Roy
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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3
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Jha AK, Nair DP, Arif M, Yedase GS, Kuniyil R, Yatham VR. Redox-Neutral Radical Cascade Cyclization of N-Arylacrylamides with Unactivated Alkyl and Aryl Chlorides. J Org Chem 2023; 88:15389-15394. [PMID: 37874967 DOI: 10.1021/acs.joc.3c01904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Herein, we report the first metal-free, redox-neutral strategy for radical cascade alkylative radical addition, cyclization of N-arylacrylamides with unactivated alkyl chlorides to give corresponding 3,3-disubstituted oxindoles in moderate to good yields. This transformation's salient features are the utilization of an organo photocatalyst, mild reaction conditions, and broad substrate scope. Moreover, this methodology is suitable for hetero cycle derived acrylamides and further allowed to utilize aryl chlorides for radical cyclization reaction. Finally, DFT studies allow us to shed light on the reaction mechanism.
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Affiliation(s)
- Avishek Kumar Jha
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram 695551, India
| | - Dhananjay P Nair
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram 695551, India
| | - Munaifa Arif
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678623, India
| | - Girish Suresh Yedase
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram 695551, India
| | - Rositha Kuniyil
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678623, India
| | - Veera Reddy Yatham
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram 695551, India
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4
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He H, Wan Q, Hou ZW, Zhou Q, Wang L. Organoelectrophotocatalytic Generation of Acyl Radicals from Formamides and Aldehydes: Access to Acylated 3-CF 3-2-Oxindoles. Org Lett 2023; 25:7014-7019. [PMID: 37721400 DOI: 10.1021/acs.orglett.3c02607] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Organoelectrophotocatalytic generation of acyl radicals from formamides and aldehydes to synthesize acylated 3-CF3-2-oxindoles has been developed. This protocol features a monocatalytic system using 9,10-phenanthrenequinone (PQ) both as a catalyst and as a hydrogen atom transfer (HAT) reagent, which avoids the use of an external HAT reagent, metal reagent, and oxidant. A variety of acylated 3-CF3-2-oxindoles have been obtained in satisfactory yields from CF3-substituted N-arylacrylamides via a tandem radical cyclization.
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Affiliation(s)
- Hong He
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Qinhui Wan
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Zhong-Wei Hou
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
| | - Quan Zhou
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
| | - Lei Wang
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
- College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, Zhejiang 311121, P. R. China
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5
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Sihag M, Soni R, Rani N, Kinger M, Kumar Aneja D. Recent Synthetic Applications of Hypervalent Iodine Reagents. A Review in Three Installments: Installment I. ORG PREP PROCED INT 2022. [DOI: 10.1080/00304948.2022.2113964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
Affiliation(s)
- Monika Sihag
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Rinku Soni
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Neha Rani
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Mayank Kinger
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Deepak Kumar Aneja
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
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6
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Teng F, Du J, Xun C, Zhu M, Lu Z, Jiang H, Chen Y, Li Y, Gui QW. Photoinduced efficient synthesis of cyanoalkylsulfonylated oxindoles via sulfur dioxide insertion. Org Biomol Chem 2021; 19:8929-8933. [PMID: 34636391 DOI: 10.1039/d1ob01466h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A visible-light-promoted radical cascade reaction of N-arylacrylamide and cyclobutanone oxime esters with sulfur dioxide insertion is established. Mainly through the exploration of the visible light wavelength, it is found that the light source has a certain influence on the formation of cyanoalkylsulfonylated oxindoles, furnishing a range of sulfones in good to excellent yields. This protocol presents good functional group compatibility and does not require transition metals, photosensitizers, external bases, or oxidants.
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Affiliation(s)
- Fan Teng
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China.
| | - Juan Du
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China. .,International Joint Research Centre for Molecular Science, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Changping Xun
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China.
| | - Mengxue Zhu
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China.
| | - Ziqin Lu
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China.
| | - Hongmei Jiang
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China.
| | - Yuling Chen
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China.
| | - Yu Li
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China.
| | - Qing-Wen Gui
- College of Chemistry and Materials Science, Hunan Agricultural University, Changsha 410128, China.
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7
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Liu H, Xiong Y, Chen Z. Pd‐Catalyzed Cascade Heck‐Type Annulation And Carbonylation to
β
‐Oxindolysulfoximidoyl Amides at Room Temperature. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Huahua Liu
- Key Laboratory of Functional Small Organic Molecules Ministry of Education College of Chemistry & Chemical Engineering Jiangxi Normal University Ziyang Road 99 Nanchang Jiangxi 330022 P. R. China
| | - Yuping Xiong
- Key Laboratory of Functional Small Organic Molecules Ministry of Education College of Chemistry & Chemical Engineering Jiangxi Normal University Ziyang Road 99 Nanchang Jiangxi 330022 P. R. China
| | - Zhiyuan Chen
- Key Laboratory of Functional Small Organic Molecules Ministry of Education College of Chemistry & Chemical Engineering Jiangxi Normal University Ziyang Road 99 Nanchang Jiangxi 330022 P. R. China
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8
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Affiliation(s)
- Jitender Singh
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247667 India
| | - Anuj Sharma
- Department of Chemistry Indian Institute of Technology Roorkee Roorkee 247667 India
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9
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Liu YL, Ouyang YJ, Zheng H, Liu H, Wei WT. Recent advances in acyl radical enabled reactions between aldehydes and alkenes. Chem Commun (Camb) 2021; 57:6111-6120. [PMID: 34113948 DOI: 10.1039/d1cc02112e] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Radical-mediated functionalization of alkenes has been emerging as an elegant and straightforward protocol to increase molecule complexity. Moreover, the abstraction of a hydrogen atom from aldehydes to afford acyl radicals has evolved as a rising star due to its high atom-economy and the ready availability of aldehydes. Considering the great influence and synthetic potential of acyl radical enabled reactions between aldehydes and alkenes, we provide a summary of the state of the art in this field with a specific emphasis on the working models and corresponding mechanisms. The discussion is divided according to the kind of alkenes and reaction type.
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Affiliation(s)
- Yi-Lin Liu
- College of Chemistry and Materials Engineering, Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Huaihua University, Huaihua, Hunan 418008, China.
| | - Yue-Jun Ouyang
- College of Chemistry and Materials Engineering, Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Huaihua University, Huaihua, Hunan 418008, China.
| | - Hongxing Zheng
- Institution of Functional Organic Molecules and Materials, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252059, China and College of Chemistry and Materials Engineering, Institute of New Materials & Industrial Technology, Wenzhou University, Wenzhou, 325035, China
| | - Hongxin Liu
- College of Chemistry and Materials Engineering, Institute of New Materials & Industrial Technology, Wenzhou University, Wenzhou, 325035, China
| | - Wen-Ting Wei
- College of Chemistry and Materials Engineering, Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol (PVA) Fiber Material, Huaihua University, Huaihua, Hunan 418008, China. and School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
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10
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Wang H, Li T, Hu D, Tong X, Zheng L, Xia C. Acylation of Arenes with Aldehydes through Dual C-H Activations by Merging Photocatalysis and Palladium Catalysis. Org Lett 2021; 23:3772-3776. [PMID: 33872039 DOI: 10.1021/acs.orglett.1c01184] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An acylation of arenes with aldehydes through dual C-H activations at room temperature is reported. The acylation was initiated by phenanthraquinone-catalyzed hydrogen atom transfer from aldehyde under visible light irradiation. The aldehyde-derived acyl radical merged with palladium-catalyzed activation of arenes to afford the cross coupling products.
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Affiliation(s)
- Haiyang Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Tao Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Dongyan Hu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Xiaogang Tong
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Liyan Zheng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Chengfeng Xia
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
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11
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Wang QL, Zhou Q, Liao J, Chen Z, Xiong BQ, Deng GJ, Tang KW, Liu Y. Cu-Catalyzed Oxidative Dual Arylation of Active Alkenes: Preparation of Cyanoarylated Oxindoles through Denitrogenation of 3-Aminoindazoles. J Org Chem 2021; 86:2866-2875. [PMID: 33467855 DOI: 10.1021/acs.joc.0c02798] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A novel and mild Cu-catalyzed oxidative dual arylation of carbon-carbon double bonds in acrylamides with 3-aminoindazoles is proposed for the synthesis of cyanoarylated oxindoles. Notably, 3-aminoindazoles are employed as efficient arylating agents via the cleavage of two C-N bonds. This oxidative dual arylation of active alkenes involves a radical process and undergoes a sequence of 3-aminoindazole oxidation, two-C-N-bond cleavage, cyanoaryl radical addition, and intramolecular cyclization.
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Affiliation(s)
- Qiao-Lin Wang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.,Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Quan Zhou
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Jia Liao
- Technical Center of Gongbei Customs, No. 501, Yinhua Road, Xiangzhou District, Zhuhai, Guangdong 519000, China
| | - Zan Chen
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Bi-Quan Xiong
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Ke-Wen Tang
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China
| | - Yu Liu
- Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.,Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
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12
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Ji M, Xu L, Luo X, Jiang M, Wang S, Chen JQ, Wu J. Alkoxycarbonyl radicals from alkyloxalyl chlorides: photoinduced synthesis of isoquinolinediones under visible light irradiation. Org Chem Front 2021. [DOI: 10.1039/d1qo01368h] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Alkyloxalyl chlorides, generated from alcohols and oxalyl chlorides, are used as alkoxycarbonyl radicals in the reaction of N-acryloyl benzamides under photocatalysis at room temperature.
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Affiliation(s)
- Mingjuan Ji
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Liang Xu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Xiangxiang Luo
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Minghui Jiang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Siyu Wang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Jian-Qiang Chen
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, Taizhou 318000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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13
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Matsumoto A, Lee HJ, Maruoka K. Development of New Radical-mediated Selective Reactions Promoted by Hypervalent Iodine(III) Reagents. CHEM REC 2020; 21:1342-1357. [PMID: 33210803 DOI: 10.1002/tcr.202000132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/22/2020] [Accepted: 10/22/2020] [Indexed: 11/09/2022]
Abstract
In this account, we describe our recent developments on the four-types of hypervalent iodine(III)-mediated radical reactions in organic synthesis. Firstly, the activation of aldehydic C-H bonds can be successfully effected with hypervalent iodine(III) reagents, thereby allowing the synthesis of various ketones with high efficiency. Secondly, the site-selective oxidation of unactivated C(sp3 )-H bonds of hydrocarbon substrates was realized with designer hypervalent iodine(III) reagents. Thirdly, various perfluoroalkyl and α-aminoalkyl radicals can be generated from sodium perfluoroalkanesulfinates and sodium α-aminoalkanesulfinates, respectively, under the influence of hypervalent iodine(III) reagents. Finally, the efficient generation of difluoromethyl radical from hypervalent difluoroacetoxyliodine(III) reagent was realized by photolysis. These four different strategies are illustrated by using various selective radical approaches.
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Affiliation(s)
- Akira Matsumoto
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo, Kyoto, 606-8501, Japan
| | - Hyo-Jun Lee
- Department of Chemistry, Kunsan National University, Gunsan, 54150, Republic of Korea
| | - Keiji Maruoka
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo, Kyoto, 606-8501, Japan
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China
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14
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Tan J, Zhu W, Xu W, Jing Y, Ke Z, Liu Y, Maruoka K. Hypervalent Iodine-Mediated Diastereoselective α-Acetoxylation of Cyclic Ketones. Front Chem 2020; 8:467. [PMID: 32754572 PMCID: PMC7365914 DOI: 10.3389/fchem.2020.00467] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 05/04/2020] [Indexed: 01/14/2023] Open
Abstract
A binary hybrid system comprising a hypervalent iodine(III) reagent and BF3•OEt2 Lewis acid was found to be effective for the diastereoselective α-acetoxylation of cyclic ketones. In this hybrid system, BF3•OEt2 Lewis acid allowed the activation of the hypervalent iodine(III) reagent and cyclic ketones for smooth α-acetoxylation reaction, achieving high diastereoselectivity. This hypervalent iodine-mediated α-acetoxylation of the cyclic ketone reaction plausibly undergoes an SN2 substitution mechanism via an α-C-bound hypervalent iodine intermediate. The diastereoselectivity of the reaction mainly originates from thermodynamic control.
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Affiliation(s)
- Jiashen Tan
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Weiqin Zhu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Weiping Xu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Yaru Jing
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China.,PCFM Lab, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, China
| | - Zhuofeng Ke
- PCFM Lab, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, China
| | - Yan Liu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
| | - Keiji Maruoka
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China.,Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
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15
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Watanabe A, Koyamada K, Miyamoto K, Kanazawa J, Uchiyama M. Decarboxylative Bromination of Sterically Hindered Carboxylic Acids with Hypervalent Iodine(III) Reagents. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00130] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ayumi Watanabe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kenta Koyamada
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazunori Miyamoto
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Junichiro Kanazawa
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Research Initiative for Supra-Materials (RISM), Shinshu University, Ueda 386-8567, Japan
- Cluster of Pioneering Research (CPR), RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
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16
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Biswas P, Mandal S, Guin J. Aerobic Acylarylation of α,β-Unsaturated Amides with Aldehydes. Org Lett 2020; 22:4294-4299. [DOI: 10.1021/acs.orglett.0c01336] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Promita Biswas
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Subhasis Mandal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Joyram Guin
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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17
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Yoshii T, Tsuzuki S, Sakurai S, Sakamoto R, Jiang J, Hatanaka M, Matsumoto A, Maruoka K. N-Hydroxybenzimidazole as a structurally modifiable platform for N-oxyl radicals for direct C-H functionalization reactions. Chem Sci 2020; 11:5772-5778. [PMID: 32832053 PMCID: PMC7416693 DOI: 10.1039/d0sc02134b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 05/16/2020] [Indexed: 11/21/2022] Open
Abstract
A novel class of N-oxy radicals based on flexibly modifiable N-hydroxybenzimidazole skeleton was designed and applied to C–H functionalization reactions.
Methods for direct functionalization of C–H bonds mediated by N-oxyl radicals constitute a powerful tool in modern organic synthesis. While several N-oxyl radicals have been developed to date, the lack of structural diversity for these species has hampered further progress in this field. Here we designed a novel class of N-oxyl radicals based on N-hydroxybenzimidazole, and applied them to the direct C–H functionalization reactions. The flexibly modifiable features of these structures enabled facile tuning of their catalytic performance. Moreover, with these organoradicals, we have developed a metal-free approach for the synthesis of acyl fluorides via direct C–H fluorination of aldehydes under mild conditions.
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Affiliation(s)
- Tomomi Yoshii
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan .
| | - Saori Tsuzuki
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan .
| | - Shunya Sakurai
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan .
| | - Ryu Sakamoto
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan .
| | - Julong Jiang
- Institute for Research Initiatives , Division for Research Strategy , Graduate School of Materials Science , Data Science Center , Nara Institute of Science and Technology , Ikoma , Nara 630-0192 , Japan
| | - Miho Hatanaka
- Institute for Research Initiatives , Division for Research Strategy , Graduate School of Materials Science , Data Science Center , Nara Institute of Science and Technology , Ikoma , Nara 630-0192 , Japan.,PRESTO , Japan Science and Technology (JST) , 4-1-8 Honcho , Kawaguchi , Saitama 332-0012 , Japan
| | - Akira Matsumoto
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo , Kyoto 606-8501 , Japan
| | - Keiji Maruoka
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan . .,Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo , Kyoto 606-8501 , Japan.,School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , China
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18
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Pan GA, Li Y, Li JH. Metal-free decarboxylative annulation of N-arylacrylamides with vinyl acids to synthesize benzo[b]azepin-2-ones. Org Chem Front 2020. [DOI: 10.1039/d0qo00651c] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient oxidative decarbonylative (3 + 2)/(5 + 2) annulation of N-arylacrylamides with vinyl acids for the synthesis of diverse seven-membered N-heterocycles under metal-free conditions has been developed.
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Affiliation(s)
- Gao-Ang Pan
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Yang Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
- State Key Laboratory of Chemo/Biosensing and Chemometrics
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19
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Xu S, Wang K, Kong W. Ni-Catalyzed Reductive Arylacylation of Alkenes toward Carbonyl-Containing Oxindoles. Org Lett 2019; 21:7498-7503. [DOI: 10.1021/acs.orglett.9b02788] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sheng Xu
- The Center for Precision Synthesis (CPS), Institute for Advanced Studies (IAS), Wuhan University, Wuhan 430072, People’s Republic of China
| | - Kuai Wang
- The Center for Precision Synthesis (CPS), Institute for Advanced Studies (IAS), Wuhan University, Wuhan 430072, People’s Republic of China
| | - Wangqing Kong
- The Center for Precision Synthesis (CPS), Institute for Advanced Studies (IAS), Wuhan University, Wuhan 430072, People’s Republic of China
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20
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Yu Y, Zheng P, Wu Y, Ye X. Electrochemical cobalt-catalyzed C-H or N-H oxidation: a facile route to synthesis of substituted oxindoles. Org Biomol Chem 2019; 16:8917-8921. [PMID: 30427366 DOI: 10.1039/c8ob02485e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Two comparable protocols for the electrochemical cobalt-catalyzed C-H/N-H oxidation have been exploited for the synthesis of substituted oxindoles via radical pathways. The electrochemical cobalt-catalyzed system was demonstrated to be efficient and eco-friendly and avoided the use of stoichiometric oxidants to afford the arylation or alkylation products in good yields at room temperature.
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Affiliation(s)
- Yue Yu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China.
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21
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Zhen X, Wan X, Zhang W, Li Q, Zhang-Negrerie D, Du Y. Synthesis of Spirooxindoles from N-Arylamide Derivatives via Oxidative C(sp2)–C(sp3) Bond Formation Mediated by PhI(OMe)2 Generated in Situ. Org Lett 2019; 21:890-894. [DOI: 10.1021/acs.orglett.8b03741] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xiaohua Zhen
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Xintong Wan
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Wei Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Qiao Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Daisy Zhang-Negrerie
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
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22
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Hyatt IFD, Dave L, David N, Kaur K, Medard M, Mowdawalla C. Hypervalent iodine reactions utilized in carbon–carbon bond formations. Org Biomol Chem 2019; 17:7822-7848. [DOI: 10.1039/c9ob01267b] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
This review covers recent developments of hypervalent iodine chemistry in dearomatizations, radicals, hypervalent iodine-guided electrophilic substitution, arylations, photoredox, and more.
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Affiliation(s)
| | - Loma Dave
- Department of Chemistry and Biochemistry
- Adelphi University
- Garden City
- USA
| | - Navindra David
- Department of Chemistry and Biochemistry
- Adelphi University
- Garden City
- USA
| | - Kirandeep Kaur
- Department of Chemistry and Biochemistry
- Adelphi University
- Garden City
- USA
| | - Marly Medard
- Department of Chemistry and Biochemistry
- Adelphi University
- Garden City
- USA
| | - Cyrus Mowdawalla
- Department of Chemistry and Biochemistry
- Adelphi University
- Garden City
- USA
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