1
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Das TK, Ghosh P, Ghosh S, Das S. Palladium-Catalyzed, Site-Selective C(sp 2)8-H Halogenation and Nitration of 4-Quinolone Derivatives. J Org Chem 2024; 89:11467-11479. [PMID: 39088747 DOI: 10.1021/acs.joc.4c01133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2024]
Abstract
Selective installation of halo and nitro groups in heterocyclic backbone through a transition-metal-catalyzed C-H bond activation strategy is immensely alluring to access high-value scaffolds. Here in, we disclosed N-pyrimidyl-directed assisted palladium(II)-catalyzed C(sp2)8-H halogenation and nitration of substituted 4-quinolone derivatives in the presence of N-halosuccinimide and tert-butyl nitrite, respectively, offering structurally diversified 8-halo/nitro-embedded 4-quinolone frameworks in high yields. Mechanistic studies indicated that the reaction follows an organometallic pathway with a reversible C-H metalation step. This operationally simple protocol is scalable with a broad substrate scope and excellent functional group compatibility. Moreover, the postdiversifications of the synthesized derivatives are also showcased to ensure the synthetic versatility of the methodology.
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Affiliation(s)
- Tapas Kumar Das
- TCG Lifesciences Pvt. Ltd., BN-7, Sector-V, Salt Lake City, Kolkata 700091, India
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India
| | - Prasanjit Ghosh
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India
| | - Shibaji Ghosh
- Department of Chemistry, CSIR Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, India
| | - Sajal Das
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India
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2
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Li XH, Yang GC, Gong JF, Song MP. Copper-catalyzed regioselective C2-H chlorination of indoles with para-toluenesulfonyl chloride. Org Biomol Chem 2022; 20:4815-4825. [PMID: 35648132 DOI: 10.1039/d2ob00758d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper-catalyzed, pyrimidine directed regioselective C-H chlorination of indoles with para-toluenesulfonyl chloride (TsCl) has been developed. The reactions proceeded smoothly in the presence of 20 mol% of Cu(OAc)2 as the catalyst and TsCl as the chlorine source, delivering C2-chlorinated indoles with structural diversity in moderate to excellent yields. Mechanistic studies suggested that single electron transfer (SET) from Cu(II) to TsCl accompanied by the release of the p-toluenesulfonyl radical and the related Cu(III)Cl species might be involved in the reactions.
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Affiliation(s)
- Xue-Hong Li
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, China.
| | - Guang-Chao Yang
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, China.
| | - Jun-Fang Gong
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, China.
| | - Mao-Ping Song
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou 450001, China.
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3
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Wang Y, Wang H, Yang Q, Xie S, Zhu H. Quinazoline‐Assisted ortho‐Halogenation with N‐Halosuccinimides through Pa(II)‐Catalyzed C(sp2)‐H Activation. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yong Wang
- Nanjing Tech University College of Chemistry and Molecular Engineering Nanjing CHINA
| | - Hui Wang
- Nanjing Tech University College of Chemistry and Molecular Engineering Nanjing CHINA
| | - Qifan Yang
- Nanjing Tech University College of Chemistry and Molecular Engineering Nanjing CHINA
| | - Shihua Xie
- Nanjing Tech University College of Chemistry and Molecular Engineering Nanjing CHINA
| | - Hongjun Zhu
- Nanjing Tech University Department of Applied Chemistry, College of Science No 30, South Puzhu 211816 Nanjing CHINA
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4
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Paik A, Paul S, Bhowmik S, Das R, Naveen T, Rana S. Recent Advances in First Row Transition Metal Mediated C‐H Halogenation of (Hetero)arenes and Alkanes. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200060] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Aniruddha Paik
- University of North Bengal Department of Chemistry Raja Rammohunpur, DarjeelingWest Bengal, India - 734013 734013 Siliguri INDIA
| | - Sabarni Paul
- University of North Bengal Department of Chemistry Raja Rammohunpur, DarjeelingWest Bengal, India - 734013 734013 Siliguri INDIA
| | - Sabyasachi Bhowmik
- University of North Bengal Department of Chemistry Raja Rammohunpur, DarjeelingWest Bengal, India - 734013 734013 Siliguri INDIA
| | - Rahul Das
- University of North Bengal Department of Chemistry Raja Rammohunpur, DarjeelingWest Bengal, India - 734013 734013 Siliguri INDIA
| | - Togati Naveen
- Sardar Vallabhbhai National Institute of Technology Department of Chemistry 395007 Surat INDIA
| | - Sujoy Rana
- University of North Bengal Chemistry Raja Rammohunpur, DarjeelingWest Bengal, India, 734013 734013 Siliguri INDIA
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5
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Xu H, Hu L, Zhu G, Zhu Y, Wang Y, Wu ZG, Zi Y, Huang W. DABCO as a practical catalyst for aromatic halogenation with N-halosuccinimides. RSC Adv 2022; 12:7115-7119. [PMID: 35424677 PMCID: PMC8982236 DOI: 10.1039/d2ra00197g] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 02/23/2022] [Indexed: 11/21/2022] Open
Abstract
A simple and practical synthetic approach for synthesis of aromatic halides is developed. Simple Lewis base, DABCO, is used as the catalyst. This arene halogenation process proceedes conveniently and efficiently at ambient conditions, providing the desired products in good to excellent yields and selectivity.
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Affiliation(s)
- Haiyan Xu
- Nantong Normal College Nantong 226010 Jiangsu P. R. China
| | - Lanping Hu
- School of Chemistry and Chemical Engineering, Nantong University Nantong 226019 Jiangsu P. R. China
| | - Guanghua Zhu
- School of Chemistry and Chemical Engineering, Nantong University Nantong 226019 Jiangsu P. R. China
| | - Yueping Zhu
- Nantong Normal College Nantong 226010 Jiangsu P. R. China
| | - Yang Wang
- School of Chemistry and Chemical Engineering, Nantong University Nantong 226019 Jiangsu P. R. China
| | - Zheng-Guang Wu
- School of Chemistry and Chemical Engineering, Nantong University Nantong 226019 Jiangsu P. R. China
| | - You Zi
- School of Chemistry and Chemical Engineering, Nantong University Nantong 226019 Jiangsu P. R. China
| | - Weichun Huang
- School of Chemistry and Chemical Engineering, Nantong University Nantong 226019 Jiangsu P. R. China
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6
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Ahmad A, Dutta HS, Kumar M, Khan AA, Raziullah, Koley D. Pd-Catalyzed C-H Halogenation of Indolines and Tetrahydroquinolines with Removable Directing Group. Org Lett 2020; 22:5870-5875. [PMID: 32657591 DOI: 10.1021/acs.orglett.0c01963] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pd-catalyzed directing-group-assisted regioselective halogenations to C7 of indolines and C8 of tetrahydroquinolines were achieved in good to excellent yields. The practicality and utility of the developed method have been illustrated by various functional group transformations such as arylation, alkenylation, cyanation, and silylation utilizing the installed synthetic handle. The concise synthesis of primaquine, an antimalarial drug, and formal syntheses of two bioactive natural products, hippadine and pratosine, have also been demonstrated.
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Affiliation(s)
- Ashfaq Ahmad
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | | | - Mohit Kumar
- Academy of Scientific and Innovative Research, New Delhi 110001, India
| | - Afsar Ali Khan
- Academy of Scientific and Innovative Research, New Delhi 110001, India
| | - Raziullah
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Dipankar Koley
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.,Academy of Scientific and Innovative Research, New Delhi 110001, India
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7
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Chen C, Wang Y, Shi X, Sun W, Zhao J, Zhu YP, Liu L, Zhu B. Palladium-Catalyzed C-2 and C-3 Dual C-H Functionalization of Indoles: Synthesis of Fluorinated Isocryptolepine Analogues. Org Lett 2020; 22:4097-4102. [PMID: 32459097 DOI: 10.1021/acs.orglett.0c01159] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Here we report a protocol to synthesize diversiform fluorinated isocryptolepine analogues with potential biological activities in one step via directed C-2 and C-3 dual C-H functionalization of indoles. We also attempted to take into account fluorinated imidoyl chlorides as a novel kind of synthons in the directed C-H functionalization reactions. As a result, a variety of fluorinated isocryptolepine analogues were obtained in up to 96% yield. Moreover, we conducted control experiments to disclose the reaction mechanism.
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Affiliation(s)
- Chen Chen
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Yuebo Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Xiaonan Shi
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Wan Sun
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Jinghui Zhao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, 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
| | - Liying Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, People's Republic of China
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8
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Ji Y, Li H, Wang Y, Zhang Z, Wu Y. Sulfoxide‐Promoted Chlorination of Indoles and Electron‐Rich Arenes with Chlorine as Nucleophile. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901492] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yuan‐Zhao Ji
- School of Marine Science and TechnologyHarbin Institute of Technology Weihai 264209 People's Republic of China
| | - Hui‐Jing Li
- School of Marine Science and TechnologyHarbin Institute of Technology Weihai 264209 People's Republic of China
| | - Yi‐Ruo Wang
- Weihai NO.1 High School 75 Wenhuazhong Road Weihai 264200 People's Republic of China
| | - Zheng‐Yan Zhang
- School of Marine Science and TechnologyHarbin Institute of Technology Weihai 264209 People's Republic of China
| | - Yan‐Chao Wu
- School of Marine Science and TechnologyHarbin Institute of Technology Weihai 264209 People's Republic of China
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9
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Gandeepan P, Müller T, Zell D, Cera G, Warratz S, Ackermann L. 3d Transition Metals for C-H Activation. Chem Rev 2018; 119:2192-2452. [PMID: 30480438 DOI: 10.1021/acs.chemrev.8b00507] [Citation(s) in RCA: 1444] [Impact Index Per Article: 240.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
C-H activation has surfaced as an increasingly powerful tool for molecular sciences, with notable applications to material sciences, crop protection, drug discovery, and pharmaceutical industries, among others. Despite major advances, the vast majority of these C-H functionalizations required precious 4d or 5d transition metal catalysts. Given the cost-effective and sustainable nature of earth-abundant first row transition metals, the development of less toxic, inexpensive 3d metal catalysts for C-H activation has gained considerable recent momentum as a significantly more environmentally-benign and economically-attractive alternative. Herein, we provide a comprehensive overview on first row transition metal catalysts for C-H activation until summer 2018.
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Affiliation(s)
- Parthasarathy Gandeepan
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Thomas Müller
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Daniel Zell
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Gianpiero Cera
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Svenja Warratz
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
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10
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Das R, Kapur M. Transition-Metal-Catalyzed Site-Selective C−H Halogenation Reactions. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800142] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Riki Das
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road Bhauri, Bhopal 462066 MP India
| | - Manmohan Kapur
- Department of Chemistry; Indian Institute of Science Education and Research Bhopal; Bhopal Bypass Road Bhauri, Bhopal 462066 MP India
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11
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Zeng W, Nukeyeva M, Wang Q, Jiang C. Synthesis of unnatural α-amino acid derivatives via selective o-C–H functionalization. Org Biomol Chem 2018; 16:598-608. [DOI: 10.1039/c7ob02921g] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Selective o-C–H functionalization of aryl based amino acids including arylation, alkylation, alkynylation, halogenation, alkoxylation, and acyloxylation were developed.
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Affiliation(s)
- Wanting Zeng
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Moldir Nukeyeva
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Qiumei Wang
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Chao Jiang
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
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12
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Tu D, Luo J, Jiang C. Copper-mediated domino C–H iodination and nitration of indoles. Chem Commun (Camb) 2018; 54:2514-2517. [DOI: 10.1039/c8cc00267c] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
An efficient and cost-effective copper-mediated aerobic oxidative C–H iodination and nitration of indoles via double C–H functionalization is reported. The domino process proceeds smoothly under mild aerobic conditions to give 3-iodo-2-nitroindoles in one step with high regioselectivity and a broad substrate scope.
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Affiliation(s)
- Daoquan Tu
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
| | - Jun Luo
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
| | - Chao Jiang
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
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13
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Synthesis of Pyrrole-Annulated Heterocycles through Copper-Catalyzed Site-Selective Dehydrogenative Cross-Coupling. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700929] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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14
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Qiu FC, Yang WC, Chang YZ, Guan BT. Palladium-Catalyzed ortho
-Halogenation of Tertiary Benzamides. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700238] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Fang-Cheng Qiu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry; Nankai University; Tianjin 300071 P.R. China
| | - Wen-Cheng Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry; Nankai University; Tianjin 300071 P.R. China
| | - Yong-Zhen Chang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry; Nankai University; Tianjin 300071 P.R. China
| | - Bing-Tao Guan
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry; Nankai University; Tianjin 300071 P.R. China
- Collaborative Innovation Center of Chemical Science and Engineering; Nankai University; Tianjin 300071 P.R. China
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15
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Das R, Kapur M. Palladium-Catalyzed, ortho-Selective C-H Halogenation of Benzyl Nitriles, Aryl Weinreb Amides, and Anilides. J Org Chem 2017; 82:1114-1126. [PMID: 28029050 DOI: 10.1021/acs.joc.6b02731] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A palladium-catalyzed, ortho-selective C-H halogenation methodology is reported herein. The highlight of the work is the highly selective C(sp2)-H functionalization of benzyl nitriles in the presence of activated C(sp3)-H bond, which results in good yields of the halogenated products with excellent regioselectivity. Along with benzyl nitriles, aryl Weinreb amides and anilides have been evaluated for the transformation using aprotic conditions. Mechanistic studies yield interesting aspects with respect to the pathway of the reaction and the directing group abilities.
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Affiliation(s)
- Riki Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) , Bhopal, Madhya Pradesh 462 066, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) , Bhopal, Madhya Pradesh 462 066, India
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16
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Xu D, Sun WW, Xie Y, Liu JK, Liu B, Zhou Y, Wu B. Metal-Free Regioselective Hypervalent Iodine-Mediated C-2 and C-3 Difunctionalization of N-Substituted Indoles. J Org Chem 2016; 81:11081-11094. [PMID: 27792348 DOI: 10.1021/acs.joc.6b02078] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Mild, metal-free, highly regioselective hypervalent-iodine mediated C-2 acetoxylation and C-3 oxidations of N-substituted indoles with (diacetoxyiodo)benzene [PhI(OAc)2] have been reported. The reaction involves three cascade steps. The quantity of PhI(OAc)2 employed in this reaction plays a key role in the outcome of three types of products (2a-4a). Furthermore, the mild and highly regioselective C-2 oxidation and C-3 dichlorination of N-substituted indoles with PhICl2 have been developed. Extensive studies including in situ IR techniques and H2O18-labeling experiment were performed to gain insight into the possible reaction mechanism.
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Affiliation(s)
- Dongdong Xu
- Cardiovascular Research Center, Shantou University Medical College , 22 Xin-Ling Rd, Shantou, 515041, China
- PET/CT Center, The First People's Hospital of Yunnan Province , 157 Jinbi Road, Kunming, 650032, China
| | - Wen-Wu Sun
- School of Pharmaceutical Sciences, South-Central University for Nationalities , Wuhan 430074, China
| | - Yanli Xie
- Cardiovascular Research Center, Shantou University Medical College , 22 Xin-Ling Rd, Shantou, 515041, China
| | - Ji-Kai Liu
- School of Pharmaceutical Sciences, South-Central University for Nationalities , Wuhan 430074, China
| | - Bin Liu
- Cardiovascular Research Center, Shantou University Medical College , 22 Xin-Ling Rd, Shantou, 515041, China
| | - Yingbi Zhou
- Cardiovascular Research Center, Shantou University Medical College , 22 Xin-Ling Rd, Shantou, 515041, China
| | - Bin Wu
- School of Pharmaceutical Sciences, South-Central University for Nationalities , Wuhan 430074, China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, China
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17
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Xu H, Zhou P, Hang R, Zhou J, Lu LL, Shen Y, Yu FC. Direct copper(II)-mediated regioselective α-halogenation of N-aryl enaminones. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.09.076] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Lied F, Lerchen A, Knecht T, Mück-Lichtenfeld C, Glorius F. Versatile Cp*Rh(III)-Catalyzed Selective Ortho-Chlorination of Arenes and Heteroarenes. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02227] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fabian Lied
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Andreas Lerchen
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Tobias Knecht
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Christian Mück-Lichtenfeld
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany
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19
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Le J, Gao Y, Ding Y, Jiang C. Cu-mediated C2-dehydrogenative homocoupling of indoles via C–H activation assisted by a removable N-pyrimidyl group. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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20
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Yang C, Cheng G, Huang B, Xue F, Jiang C. Metal-free regioselective construction of indolin-3-ones via hypervalent iodine oxidation of N-substituted indoles. RSC Adv 2016. [DOI: 10.1039/c6ra19741h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A metal-free method for regioselective construction of 2-acetoxy indolin-3-ones from N-substituted indoles using PhI(OAc)2 was developed under mild reaction conditions.
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Affiliation(s)
- Chao Yang
- Department of Pharmaceutical Engineering
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
| | - Guanyun Cheng
- Department of Pharmaceutical Engineering
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
| | - Baofu Huang
- Nanjing Perlong Medical Equipment Co., Ltd
- Nanjing
- China
| | - Fengtian Xue
- Department of Pharmaceutical Sciences
- University of Maryland School of Pharmacy
- Baltimore
- United States
| | - Chao Jiang
- Department of Pharmaceutical Engineering
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
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