1
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Hasegawa S, Harano K, Motokura K. RhRu Bimetallic Oxide Cluster Catalysts for Cross-Dehydrogenative Coupling of Arenes and Carboxylic Acids. J Am Chem Soc 2024; 146:19059-19069. [PMID: 38842195 DOI: 10.1021/jacs.4c03467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Noble-metal-based bimetallic oxide clusters are promising novel catalysts. In this study, we developed carbon-supported RhRu bimetallic oxide clusters (RhRuOx/C) with a mean diameter of 1.2 nm, which showed remarkable catalytic activity for the cross-dehydrogenative coupling (CDC) of arenes and carboxylic acids with O2 as the sole oxidant. RhRu bimetallic oxide cluster formation was confirmed by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy with energy-dispersive X-ray spectroscopy and synchrotron X-ray absorption spectroscopy. Kinetic isotope and substituent effects indicated that arene C-H bond cleavage was the rate-determining step and proceeded via electrophilic concerted metalation-deprotonation mechanism, with a carboxylate as an internal base. Density functional theory calculations supported the proposed mechanism and indicated that the active center for C-H bond activation was Rh(V) rather than Rh(III), while Ru enhanced the electrophilicity of the Rh(V) site by decreasing the negative charge of the surrounding oxygen atoms. Electron-rich arenes showed relatively high reactivity for the RhRuOx/C-catalyzed CDC reaction, and both aliphatic and aromatic carboxylic acids were applicable to the reaction. The RhRuOx/C catalyst is promising for the CDC reaction of arenes and carboxylic acids to produce aryl esters. This work promotes the development of noble-metal-based bimetallic oxide clusters for C-H bond activation reactions.
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Affiliation(s)
- Shingo Hasegawa
- Department of Chemistry and Life Science, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Koji Harano
- Center for Basic Research on Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Ken Motokura
- Department of Chemistry and Life Science, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
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2
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Zhang R, Ma R, Chen R, Wang L, Ma Y. Regioselective C 3Alkylation of Indoles for the Synthesis of Bis(indolyl)methanes and 3-Styryl Indoles. J Org Chem 2024; 89:1846-1857. [PMID: 38214898 DOI: 10.1021/acs.joc.3c02551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Herein, we describe an efficient transition-metal-free regioselective C3alkylation of indoles for the synthesis of bis(indolyl)methanes and 3-styryl indoles. Nitrobenzene is employed as the oxidant to oxidize the alcohols in the presence of a strong base and the reaction avoids the use of transition metals such as Ru and Mn. The protocol provides a favorable route to access biologically active compounds such as arundine, vibrindole A, and turbomycin B.
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Affiliation(s)
- Ruiqin Zhang
- Institute of Advanced Studies and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang 318000, P. R. China
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P. R. China
| | - Renchao Ma
- Institute of Advanced Studies and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang 318000, P. R. China
| | - Rener Chen
- Institute of Advanced Studies and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang 318000, P. R. China
| | - Lei Wang
- Institute of Advanced Studies and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang 318000, 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 311121, P. R. China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang 318000, P. R. China
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3
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Fang C, Li L, Yang H, Kong C, Zhang J, Xie M, Wu J. Rh(III)-catalyzed selective C2 C-H acyloxylation of indoles. Chem Commun (Camb) 2023; 60:216-219. [PMID: 38050725 DOI: 10.1039/d3cc05799b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
Herein, we present the first highly regio- and chemoselective C2 C-H acyloxylation of indole under rhodium catalysis and an N-quinolinyl auxiliary. This strategy accommodates a wide range of indoles and structurally diverse carboxylic acids with good reaction efficiencies to yield functionalized indoles. The utility of this logic was demonstrated by the concise synthesis of the functionalized 2-oxindole derivatives. Preliminary mechanistic studies indicate that catalyst turnover of RhIII-RhIV/V-RhII/III-RhIII might be involved in this catalytic C-H transformation.
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Affiliation(s)
- Chaoying Fang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.
| | - Li Li
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.
| | - Haitao Yang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.
| | - Caiyang Kong
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.
| | - Jitan Zhang
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.
| | - Meihua Xie
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.
| | - Jiaping Wu
- Key Laboratory of Functional Molecular Solids (Ministry of Education), Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.
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4
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Li T, Chen K, Wang X, Wang Y, Su Y, Guo Y. Mass Spectrometry Rearrangement Ions and Metabolic Pathway-Based Discovery of Indole Derivatives during the Aging Process in Citrus reticulata 'Chachi'. Foods 2023; 13:8. [PMID: 38201037 PMCID: PMC10778486 DOI: 10.3390/foods13010008] [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: 10/31/2023] [Revised: 11/29/2023] [Accepted: 12/11/2023] [Indexed: 01/12/2024] Open
Abstract
The rapid analysis and characterization of compounds using mass spectrometry (MS) may overlook trace compounds. Although targeted analysis methods can significantly improve detection sensitivity, it is hard to discover novel scaffold compounds in the trace. This study developed a strategy for discovering trace compounds in the aging process of traditional Chinese medicine based on MS fragmentation and known metabolic pathways. Specifically, we found that the characteristic component of C. reticulata 'Chachi', methyl N-methyl anthranilate (MMA), fragmented in electrospray ionization coupled with collision-induced dissociation (CID) to produce the rearrangement ion 3-hydroxyindole, which was proven to exist in trace amounts in C. reticulata 'Chachi' based on comparison with the reference substance using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Combining the known metabolic pathways of 3-hydroxyindole and the possible methylation reactions that may occur during aging, a total of 10 possible indole derivatives were untargeted predicted. These compounds were confirmed to originate from MMA using purchased or synthesized reference substances, all of which were detected in C. reticulata 'Chachi' through LC-MS/MS, achieving trace compound analysis from untargeted to targeted. These results may contribute to explaining the aging mechanism of C. reticulata 'Chachi', and the strategy of using the CID-induced special rearrangement ion-binding metabolic pathway has potential application value for discovering trace compounds.
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Affiliation(s)
- Tian Li
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China;
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China; (K.C.); (X.W.); (Y.G.)
| | - Ke Chen
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China; (K.C.); (X.W.); (Y.G.)
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China; (K.C.); (X.W.); (Y.G.)
| | - Ying Wang
- Institute for Control of Chinese Traditional Medicine and Ethnic Medicine, National Institutes for Food and Drug Control, No. 31 Huatuo Road, Daxing District, Beijing 102629, China
| | - Yue Su
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China;
| | - Yinlong Guo
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China; (K.C.); (X.W.); (Y.G.)
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5
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Palladium-Catalyzed Organic Reactions Involving Hypervalent Iodine Reagents. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123900. [PMID: 35745020 PMCID: PMC9230104 DOI: 10.3390/molecules27123900] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/07/2022] [Accepted: 06/11/2022] [Indexed: 01/13/2023]
Abstract
The chemistry of polyvalent iodine compounds has piqued the interest of researchers due to their role as important and flexible reagents in synthetic organic chemistry, resulting in a broad variety of useful organic molecules. These chemicals have potential uses in various functionalization procedures due to their non-toxic and environmentally friendly properties. As they are also strong electrophiles and potent oxidizing agents, the use of hypervalent iodine reagents in palladium-catalyzed transformations has received a lot of attention in recent years. Extensive research has been conducted on the subject of C—H bond functionalization by Pd catalysis with hypervalent iodine reagents as oxidants. Furthermore, the iodine(III) reagent is now often used as an arylating agent in Pd-catalyzed C—H arylation or Heck-type cross-coupling processes. In this article, the recent advances in palladium-catalyzed oxidative cross-coupling reactions employing hypervalent iodine reagents are reviewed in detail.
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7
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Bhattacharjee P, Bora U. Organocatalytic dimensions to the C–H functionalization of the carbocyclic core in indoles: a review update. Org Chem Front 2021. [DOI: 10.1039/d0qo01466d] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A review highlighting important research findings in remote C–H activation processes using effectual organocatalytic perspectives. The challenging indole carbocyclic ring positions were successfully accessed with proper regio- and stereocontrols.
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Affiliation(s)
| | - Utpal Bora
- Department of Chemical Sciences
- Tezpur University
- Tezpur
- India
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8
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Kumar P, Nagtilak PJ, Kapur M. Transition metal-catalyzed C–H functionalizations of indoles. NEW J CHEM 2021. [DOI: 10.1039/d1nj01696b] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This review summarises a wide range of transformations on the indole skeleton, including arylation, alkenylation, alkynylation, acylation, nitration, borylation, and amidation, using transition-metal catalyzed C–H functionalization as the key step.
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Affiliation(s)
- Pravin Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Prajyot Jayadev Nagtilak
- 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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9
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Shetgaonkar SE, Singh FV. Hypervalent Iodine Reagents in Palladium-Catalyzed Oxidative Cross-Coupling Reactions. Front Chem 2020; 8:705. [PMID: 33134246 PMCID: PMC7553084 DOI: 10.3389/fchem.2020.00705] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 07/09/2020] [Indexed: 01/12/2023] Open
Abstract
Hypervalent iodine compounds are valuable and versatile reagents in synthetic organic chemistry, generating a diverse array of useful organic molecules. Owing to their non-toxic and environmentally friendly features, these reagents find potential applications in various oxidative functionalization reactions. In recent years, the use of hypervalent iodine reagents in palladium-catalyzed transformations has been widely studied as they are strong electrophiles and powerful oxidizing agents. For instance, extensive work has been carried out in the field of C–H bond functionalization via Pd-catalysis using hypervalent iodine reagents as oxidants. In addition, nowadays, iodine(III) reagents have been frequently employed as arylating agents in Pd-catalyzed C–H arylation or Heck-type cross-coupling reactions. In this review, recent advancements in the area of palladium-catalyzed oxidative cross-coupling reactions using hypervalent iodine reagents are summarized in detail.
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Affiliation(s)
- Samata E Shetgaonkar
- Chemistry Division, School of Advanced Science, Vellore Institute of Technology, Chennai, India
| | - Fateh V Singh
- Chemistry Division, School of Advanced Science, Vellore Institute of Technology, Chennai, India
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10
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El-Harairy A, Shaheen M, Li J, Wu Y, Li M, Gu Y. Synthesis of α-indolylacrylates as potential anticancer agents using a Brønsted acid ionic liquid catalyst and the butyl acetate solvent. RSC Adv 2020; 10:13507-13516. [PMID: 35493022 PMCID: PMC9051412 DOI: 10.1039/d0ra00990c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 03/15/2020] [Indexed: 11/21/2022] Open
Abstract
In this study, new α-indolylacrylate derivatives were synthesized by the reaction of 2-substituted indoles with various pyruvates using a Brønsted acid ionic liquid catalyst in butyl acetate solvent. This is the first report on the application of pyruvate compounds for the synthesis of indolylacrylates. The acrylate derivatives could be obtained in good to excellent yields. A preliminary biological evaluation revealed their promising anticancer activity (IC50 = 9.73 μM for the compound 4l) and indicated that both the indole core and the acrylate moieties are promising for the development of novel anticancer drugs. The Lipinski's rule and Veber's parameters were assessed for the newly synthesized derivatives. 4lNew α-indolylacrylate derivatives were synthesized by reaction of 2-substituted indoles with various pyruvates using a Brønsted acid ionic liquid catalyst in butyl acetate solvent. This is the first application of pyruvate compounds for the synthesis of indolylacrylates.![]()
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Affiliation(s)
- Ahmed El-Harairy
- Environmental, Energy and Green Chemistry Laboratory, Faculty of Agriculture, Damietta University 34511 Damietta Egypt .,School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology 430074 Wuhan China
| | - Mennatallah Shaheen
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Horus University 34511 New Damietta Damietta Egypt
| | - Jun Li
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology 430074 Wuhan China
| | - Yuzhou Wu
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology 430074 Wuhan China
| | - Minghao Li
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology 430074 Wuhan China
| | - Yanlong Gu
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology 430074 Wuhan China.,State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics Lanzhou 730000 China
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11
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Ghosh I, Khamrai J, Savateev A, Shlapakov N, Antonietti M, König B. Organic semiconductor photocatalyst can bifunctionalize arenes and heteroarenes. Science 2020; 365:360-366. [PMID: 31346061 DOI: 10.1126/science.aaw3254] [Citation(s) in RCA: 273] [Impact Index Per Article: 68.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 06/03/2019] [Indexed: 12/20/2022]
Abstract
Photoexcited electron-hole pairs on a semiconductor surface can engage in redox reactions with two different substrates. Similar to conventional electrosynthesis, the primary redox intermediates afford only separate oxidized and reduced products or, more rarely, combine to one addition product. Here, we report that a stable organic semiconductor material, mesoporous graphitic carbon nitride (mpg-CN), can act as a visible-light photoredox catalyst to orchestrate oxidative and reductive interfacial electron transfers to two different substrates in a two- or three-component system for direct twofold carbon-hydrogen functionalization of arenes and heteroarenes. The mpg-CN catalyst tolerates reactive radicals and strong nucleophiles, is straightforwardly recoverable by simple centrifugation of reaction mixtures, and is reusable for at least four catalytic transformations with conserved activity.
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Affiliation(s)
- Indrajit Ghosh
- Fakultät für Chemie und Pharmazie, Universität Regensburg, 93040 Regensburg, Germany.,Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam, Germany
| | - Jagadish Khamrai
- Fakultät für Chemie und Pharmazie, Universität Regensburg, 93040 Regensburg, Germany
| | - Aleksandr Savateev
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam, Germany
| | - Nikita Shlapakov
- Fakultät für Chemie und Pharmazie, Universität Regensburg, 93040 Regensburg, Germany
| | - Markus Antonietti
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam, Germany.
| | - Burkhard König
- Fakultät für Chemie und Pharmazie, Universität Regensburg, 93040 Regensburg, Germany.
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12
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Mao Z, Liu M, Zhu G, Zhou J, Zhang X. Transition-metal-free highly regioselective C–H acetoxylation of pyrrolo[2,3-d]pyrimidine derivatives. Org Chem Front 2020. [DOI: 10.1039/d0qo00702a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Transition-metal-free catalyzed direct C(sp2)–H acetoxylation of pyrrolo[2,3-d]pyrimidine derivatives is reported. This protocol provides a variety of acetoxylated pyrrolo[2,3-d]pyrimidines in good to excellent yields.
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Affiliation(s)
- Zhengtong Mao
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | - Min Liu
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | - Gaoyang Zhu
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | - Jing Zhou
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | - Xingxian Zhang
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
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13
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Pi C, Yin X, Cui X, Ma Y, Wu Y. Directed C3-Alkoxymethylation of Indole via Three-Component Cascade Reaction. Org Lett 2019; 21:2081-2084. [DOI: 10.1021/acs.orglett.9b00357] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Chao Pi
- College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Xiaohang Yin
- College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Xiuling Cui
- College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yuwen Ma
- Zhengzhou Railway Vocational and Technical College, Zhengzhou 450052, P. R. China
| | - Yangjie Wu
- College of Chemistry and Molecular Engineering, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou 450052, P. R. China
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14
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Lin Y, Ye J, Zhang W, Gao Y, Chen H. Catalytic Oxidative Coupling Cyclization for Construction of Benzofuroindolenines under Mild Reaction Conditions. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801184] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yuqi Lin
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
| | - Jinxiang Ye
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
| | - Wenting Zhang
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
| | - Yu Gao
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
| | - Haijun Chen
- College of ChemistryFuzhou University, Fuzhou Fujian 350116 People's Republic of China
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15
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Song J, Cui J, Liang H, Liu Q, Dong Y, Liu H. Palladium-Catalyzed Direct Oxidative Esterification of Indoles at the C3 Position: A Novel Prospect for C(sp2
)−H Acyloxylation. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201700663] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jian Song
- School of Chemistry and Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 P. R. China
| | - Jie Cui
- School of Chemistry and Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 P. R. China
| | - Hanbing Liang
- School of Chemistry and Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 P. R. China
| | - Qing Liu
- School of Chemistry and Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 P. R. China
| | - Yunhui Dong
- School of Chemistry and Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 P. R. China
| | - Hui Liu
- School of Chemistry and Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 P. R. China
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16
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Thrimurtulu N, Dey A, Pal K, Nair A, Kumar S, Volla CMR. Metal-Free Remote C-H Bond Acetoxylation of 8-Aminoquinolines on the C5-Position. ChemistrySelect 2017. [DOI: 10.1002/slct.201701388] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Neetipalli Thrimurtulu
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400076 India
| | - Arnab Dey
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400076 India
| | - Kuntal Pal
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400076 India
| | - Akshay Nair
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400076 India
| | - Shreemoyee Kumar
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400076 India
| | - Chandra M. R. Volla
- Department of Chemistry; Indian Institute of Technology Bombay, Powai; Mumbai 400076 India
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17
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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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18
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Wang L, Qu X, Fang L, Li Z, Hu S, Wang F. Synthesis of 3-Acetoxyoxindole Derivatives by Metal-Free PhI(OAc)2-Mediated Oxidation of 3-Substituted Indoles. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600706] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Liang Wang
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical and Enviromental Engineering; Jianghan University; 430056 Wuhan P. R. China
| | - Xing Qu
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical and Enviromental Engineering; Jianghan University; 430056 Wuhan P. R. China
| | - Lizhu Fang
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical and Enviromental Engineering; Jianghan University; 430056 Wuhan P. R. China
| | - Zhan Li
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical and Enviromental Engineering; Jianghan University; 430056 Wuhan P. R. China
| | - Siqian Hu
- Key Laboratory of Optoelectronic Chemical Materials and Devices; Ministry of Education; School of Chemical and Enviromental Engineering; Jianghan University; 430056 Wuhan P. R. China
| | - Feng Wang
- College of Chemistry and Materials Science; Hubei Engineering University; 432000 Xiaogan P. R. China
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19
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Guo SR, Santhosh Kumar P, Yuan YQ, Yang MH. Gold-Catalyzed, Iodine(III)-Mediated Direct Acyloxylation of the Unactivated C(sp3)-H Bonds of Methyl Sulfides. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600632] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Sheng-rong Guo
- Department of Chemistry; Lishui University; 323000 Lishui P. R. China
| | | | - Yan-qin Yuan
- Department of Chemistry; Lishui University; 323000 Lishui P. R. China
| | - Ming-hua Yang
- Department of Chemistry; Lishui University; 323000 Lishui P. R. China
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20
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Bosnidou AE, Millán A, Ceballos J, Martínez C, Muñiz K. Iodine(III)-Mediated Selective Intermolecular C–H Amination for the Chemical Diversification of Tryptamines. J Org Chem 2016; 81:6496-504. [DOI: 10.1021/acs.joc.6b01118] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Alexandra E. Bosnidou
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avenida Països Catalans 16, E-43007 Tarragona, Spain
| | - Alba Millán
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avenida Països Catalans 16, E-43007 Tarragona, Spain
| | - Javier Ceballos
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avenida Països Catalans 16, E-43007 Tarragona, Spain
| | - Claudio Martínez
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avenida Països Catalans 16, E-43007 Tarragona, Spain
| | - Kilian Muñiz
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avenida Països Catalans 16, E-43007 Tarragona, Spain
- ICREA, Passeig Lluís Companys 23, 08010 Barcelona, Spain
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21
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Zhou S, Wang J, Wang L, Chen K, Song C, Zhu J. Co(III)-Catalyzed, Internal and Terminal Alkyne-Compatible Synthesis of Indoles. Org Lett 2016; 18:3806-9. [DOI: 10.1021/acs.orglett.6b01805] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shuguang Zhou
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructures, Nanjing University, Nanjing 210093, China
| | - Jinhu Wang
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructures, Nanjing University, Nanjing 210093, China
| | - Lili Wang
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructures, Nanjing University, Nanjing 210093, China
| | - Kehao Chen
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructures, Nanjing University, Nanjing 210093, China
| | - Chao Song
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructures, Nanjing University, Nanjing 210093, China
| | - Jin Zhu
- Department of Polymer Science
and Engineering, School of Chemistry and Chemical Engineering, State
Key Laboratory of Coordination Chemistry, Nanjing National Laboratory
of Microstructures, Nanjing University, Nanjing 210093, China
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22
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Deng H, Li H, Wang L. ortho-Heteroarylation of Azobenzenes by Rh-Catalyzed Cross-Dehydrogenative Coupling: An Approach to Conjugated Biaryls. Org Lett 2016; 18:3110-3. [DOI: 10.1021/acs.orglett.6b01277] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hong Deng
- Department
of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, China
| | - Hongji Li
- Department
of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, China
| | - Lei Wang
- Department
of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, China
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23
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Moghimi S, Mahdavi M, Shafiee A, Foroumadi A. Transition-Metal-Catalyzed Acyloxylation: Activation of C(sp2)-H and C(sp3)-H Bonds. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600138] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Setareh Moghimi
- Department of Medicinal Chemistry; Faculty of Pharmacy and Pharmaceutical Sciences Research Center; Tehran University of Medical Sciences; Tehran Iran
| | - Mohammad Mahdavi
- Drug Design and Development Research Center; Tehran University of Medical Sciences; Tehran Iran
| | - Abbas Shafiee
- Department of Medicinal Chemistry; Faculty of Pharmacy and Pharmaceutical Sciences Research Center; Tehran University of Medical Sciences; Tehran Iran
| | - Alireza Foroumadi
- Department of Medicinal Chemistry; Faculty of Pharmacy and Pharmaceutical Sciences Research Center; Tehran University of Medical Sciences; Tehran Iran
- Drug Design and Development Research Center; Tehran University of Medical Sciences; Tehran Iran
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24
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Synthesis of (pentafluorophenyl)benzenes via Pd-catalyzed C–H arylation of pentafluorobenzene with aryliodine diacetates. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2016. [DOI: 10.1007/s13738-016-0909-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Silver-Catalyzed Intramolecular C-2 Selective Acylation of Indoles with Aldehydes: An Atom-Economical Entry to Indole-Indolone Scaffolds. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600108] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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26
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Sun WB, Xue JF, Zhang GY, Zeng RS, An LT, Zhang PZ, Zou JP. Silver-Catalyzed Direct C${{_{sp{^{2}}}}}$H Phosphorylation of Indoles Leading to Phosphoindoles. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600001] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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27
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Zhang M, Duan Y, Li W, Cheng Y, Zhu C. Visible-light-induced aerobic dearomative reaction of indole derivatives: access to heterocycle fused or spirocyclo indolones. Chem Commun (Camb) 2016; 52:4761-3. [PMID: 26974291 DOI: 10.1039/c6cc00818f] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Oxazolo[3,2-a]indolone and spiro[furan-2,2'-indolin]one are synthesized by the visible-light-induced aerobic dearomative reaction of indoles. The common indole tethered alcohol at the N1 or C2 position reacts in a cascade fashion, providing facile access to diverse indolone scaffolds.
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Affiliation(s)
- Muliang Zhang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China.
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28
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Singh BK, Jana R. Ligand-Enabled, Copper-Promoted Regio- and Chemoselective Hydroxylation of Arenes, Aryl Halides, and Aryl Methyl Ethers. J Org Chem 2016; 81:831-41. [PMID: 26762789 DOI: 10.1021/acs.joc.5b02302] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report here a practical method for the ortho C-H hydroxylation of benzamides with inexpensive copper(II) acetate monohydrate and a pyridine ligand. An intra- and intermolecular ligand combination was explored to achieve regio- and chemoselective hydroxylation. Interestingly, typical regiochemical scrambling associated with the C-H activation was further resolved by introducing a ligand-directed ortho hydroxylation of haloarenes and aryl methyl ethers.
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Affiliation(s)
- Bijaya Kumar Singh
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata-700032, West Bengal, India.,Academy of Scientific and Innovative Research , Kolkata-700032, West Bengal, India
| | - Ranjan Jana
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata-700032, West Bengal, India.,Academy of Scientific and Innovative Research , Kolkata-700032, West Bengal, India
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29
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Huang H, Cai J, Ji X, Xiao F, Chen Y, Deng GJ. Internal Oxidant-Triggered Aerobic Oxygenation and Cyclization of Indoles under Copper Catalysis. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508076] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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30
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Huang H, Cai J, Ji X, Xiao F, Chen Y, Deng GJ. Internal Oxidant-Triggered Aerobic Oxygenation and Cyclization of Indoles under Copper Catalysis. Angew Chem Int Ed Engl 2015; 55:307-11. [DOI: 10.1002/anie.201508076] [Citation(s) in RCA: 154] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 09/25/2015] [Indexed: 01/08/2023]
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31
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Cheng C, Liu S, Zhu G. Divergent Synthesis of 2-Aminofurans via Palladium-Catalyzed Acetoxylative, Alkoxylative, and Hydroxylative Cycloisomerization of Homoallenyl Amides. J Org Chem 2015; 80:7604-12. [PMID: 26147649 DOI: 10.1021/acs.joc.5b01182] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A fine-tunable transformation, including Pd-catalyzed acetoxylative, alkoxylative, and hydroxylative cycloisomerization of homoallenyl amides, has been realized with hypervalent iodine organic compounds as the oxidants, giving polysubstituted 2-aminofurans in promising yields at room temperature. The selective formation of three different types of products from the same starting materials makes this reaction particularly attractive and useful for organic synthesis.
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Affiliation(s)
- Cungui Cheng
- Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Shuiyou Liu
- Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Gangguo Zhu
- Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
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32
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Sun J, Wang F, Shen Y, Zhi H, Wu H, Liu Y. Palladium-catalyzed direct and regioselective C–H acyloxylation of indolizines. Org Biomol Chem 2015; 13:10236-43. [DOI: 10.1039/c5ob01359c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A direct and highly regioselective C1-acyloxylation of indolizines was developed via palladium-catalyzed C–H functionalization. In this reaction, the regioselectivity was achieved in the absence of a directing group.
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Affiliation(s)
- Jinwei Sun
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials and Institute of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Fuyao Wang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials and Institute of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Yongmiao Shen
- School of Chemistry and Chemical Engineering
- Shaoxing University
- Shaoxing
- P. R. China
| | - Huizhen Zhi
- School of Chemistry and Material Science
- Nanjing Normal University
- Nanjing
- P. R. China
| | - Hui Wu
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials and Institute of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Yun Liu
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials and Institute of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
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33
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Soni V, Patel UN, Punji B. Metal-free regioselective C-3 acetoxylation of N-substituted indoles: crucial impact of nitrogen-substituent. RSC Adv 2015. [DOI: 10.1039/c5ra10428a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Regioselective C-3 acetoxylation of the N-substituted indoles with PhI(OAc)2 is described under metal-free conditions. The π-electron-deficient aryl-substituents on the N-atom of indoles remarkably favor the C-3 acetoxylation.
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Affiliation(s)
- Vineeta Soni
- Organometallic Synthesis and Catalysis Group
- Chemical Engineering Division
- CSIR – National Chemical Laboratory (CSIR – NCL)
- Pune – 411 008
- India
| | - Ulhas N. Patel
- Organometallic Synthesis and Catalysis Group
- Chemical Engineering Division
- CSIR – National Chemical Laboratory (CSIR – NCL)
- Pune – 411 008
- India
| | - Benudhar Punji
- Organometallic Synthesis and Catalysis Group
- Chemical Engineering Division
- CSIR – National Chemical Laboratory (CSIR – NCL)
- Pune – 411 008
- India
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34
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Ding Z, Tan Q, Gao M, Xu B. Copper-catalyzed aerobic cascade cycloamination and acyloxylation: a direct approach to 4-acyloxy-1H-pyrazoles. Org Biomol Chem 2015; 13:4642-6. [DOI: 10.1039/c5ob00409h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient copper-catalyzed regioselective olefinic C(sp2)–H bond cycloamination and acyloxylation was developed to give acyloxylated pyrazoles under mild conditions, which combines the formation of the pyrazole skeleton and installation of an acyloxyl group in a single step.
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Affiliation(s)
- Zhengwei Ding
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444
- China
| | - Qitao Tan
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444
- China
| | - Mingchun Gao
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444
- China
| | - Bin Xu
- Department of Chemistry
- Innovative Drug Research Center
- Shanghai University
- Shanghai 200444
- China
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35
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Schütte J, Kilgenstein F, Fischer M, Koert U. Unsymmetricalvic-Tricarbonyl Compounds for the Total Syntheses of Cladoniamide G and Cladoniamide F. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402531] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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Zhou AX, Mao LL, Wang GW, Yang SD. A unique copper-catalyzed cross-coupling reaction by hydrogen (H2) removal for the stereoselective synthesis of 3-phosphoindoles. Chem Commun (Camb) 2014; 50:8529-32. [DOI: 10.1039/c4cc01815j] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first Cu(i)-catalyzed cross-coupling reaction by hydrogen (H2) removal for the stereoselective synthesis of 3-phosphoindoles is reported.
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Affiliation(s)
- An-Xi Zhou
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Liu-Liang Mao
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Gang-Wei Wang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
| | - Shang-Dong Yang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000, P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
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37
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Ju L, Yao J, Wu Z, Liu Z, Zhang Y. Palladium-Catalyzed Oxidative Acetoxylation of Benzylic C–H Bond Using Bidentate Auxiliary. J Org Chem 2013; 78:10821-31. [DOI: 10.1021/jo401830k] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Long Ju
- ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Jinzhong Yao
- ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zaihong Wu
- ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zhanxiang Liu
- ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yuhong Zhang
- ZJU-NHU United R&D Center, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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38
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Liu H, Shi G, Pan S, Jiang Y, Zhang Y. Palladium-Catalyzed Benzylation of Carboxylic Acids with Toluene via Benzylic C–H Activation. Org Lett 2013; 15:4098-101. [DOI: 10.1021/ol401687f] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Hongqiang Liu
- Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China, and Key Laboratory of Yangtze River Water Environment, Ministry of Education, Siping Road 1239, P. R. China
| | - Guangfa Shi
- Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China, and Key Laboratory of Yangtze River Water Environment, Ministry of Education, Siping Road 1239, P. R. China
| | - Shulei Pan
- Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China, and Key Laboratory of Yangtze River Water Environment, Ministry of Education, Siping Road 1239, P. R. China
| | - Yuyu Jiang
- Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China, and Key Laboratory of Yangtze River Water Environment, Ministry of Education, Siping Road 1239, P. R. China
| | - Yanghui Zhang
- Department of Chemistry, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China, and Key Laboratory of Yangtze River Water Environment, Ministry of Education, Siping Road 1239, P. R. China
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39
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Pirovano V, Facoetti D, Dell'Acqua M, Della Fontana E, Abbiati G, Rossi E. Gold(I) or silver catalyzed synthesis of α-indolylacrylates. Org Lett 2013; 15:3812-5. [PMID: 23859310 DOI: 10.1021/ol401716b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Methyl 2-acetamidoacrylate reacted with various 2-substituted indoles in the presence of catalytic amounts of AgSbF6 or AuPPh3NTf2 to provide the corresponding methyl 2-(2-substituted-1H-indol-3-yl)acrylates.
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Affiliation(s)
- Valentina Pirovano
- Dipartimento di Scienze Farmaceutiche, Sezione di Chimica Generale e Organica A. Marchesini, Via Venezian, 21, 20133 Milano, Italy
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40
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41
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Yang H, Yang L, Li Y, Zhang F, Liu H, Yi B. Highly regioselective C H bond functionalization of imidazo[1,2-a]pyridines with aryl halides catalyzed by Ru-arene complex. CATAL COMMUN 2012. [DOI: 10.1016/j.catcom.2012.04.032] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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42
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43
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Min M, Choe H, Hong S. Regioselective Cross-Dehydrogenative Coupling of Chromones and Non-Activated Arenes. ASIAN J ORG CHEM 2012. [DOI: 10.1002/ajoc.201200036] [Citation(s) in RCA: 21] [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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44
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Ge SP, Zhang XH, Han JS, Zhong P. Copper-Catalysed Direct C–H Bond Oxidative Acetoxylation and Iodination of Indoles. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13360637793465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A novel Cu(OAc)2-catalysed direct C–H bond oxidative acetoxylation and iodination of indoles using PhI(OAc)2 as a terminal oxidant is reported. Adopting this method, a series of 3-iodoindoles and indol-3-yl acetates were obtained in nearly 1:1 ratio yield.
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Affiliation(s)
- Shao-peng Ge
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, P. R. China
| | - Xiao-hong Zhang
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, P. R. China
| | - Jiang-sheng Han
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, P. R. China
| | - Ping Zhong
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, P. R. China
- Oujiang College, Wenzhou University, Wenzhou 325035, P. R. China
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45
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Transition-metal-catalyzed acetoxylation of heterocycles: all that glitters is not palladium. Chem Heterocycl Compd (N Y) 2012. [DOI: 10.1007/s10593-012-0967-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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46
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Leskinen MV, Yip KT, Valkonen A, Pihko PM. Palladium-Catalyzed Dehydrogenative β′-Functionalization of β-Keto Esters with Indoles at Room Temperature. J Am Chem Soc 2012; 134:5750-3. [DOI: 10.1021/ja300684r] [Citation(s) in RCA: 127] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Mikko V. Leskinen
- Department
of Chemistry and NanoScience Center, University of Jyväskylä, FI-40014 JYU,
Finland
| | - Kai-Tai Yip
- Department
of Chemistry and NanoScience Center, University of Jyväskylä, FI-40014 JYU,
Finland
| | - Arto Valkonen
- Department
of Chemistry and NanoScience Center, University of Jyväskylä, FI-40014 JYU,
Finland
| | - Petri M. Pihko
- Department
of Chemistry and NanoScience Center, University of Jyväskylä, FI-40014 JYU,
Finland
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47
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Liu Q, Zhao QY, Liu J, Wu P, Yi H, Lei A. A trans diacyloxylation of indoles. Chem Commun (Camb) 2012; 48:3239-41. [PMID: 22331283 DOI: 10.1039/c2cc17815j] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A trans diacyloxylation of indoles is accomplished by employing PhI(OAc)(2) as the oxidant. A broad range of functional groups are well tolerated. Both the electronic properties of the N-protecting groups of indoles and the acidity of the reaction media play important roles in the selectivity of indole acyloxylation reactions.
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Affiliation(s)
- Qiang Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, PR China
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48
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Pradal A, Toullec PY, Michelet V. Gold-Catalyzed Oxidative Acyloxylation of Arenes. Org Lett 2011; 13:6086-9. [DOI: 10.1021/ol202577c] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Alexandre Pradal
- Chimie ParisTech, Laboratoire Charles Friedel, UMR 7223 11 rue P. et M. Curie, 75231 Paris Cedex 05, France
| | - Patrick Y. Toullec
- Chimie ParisTech, Laboratoire Charles Friedel, UMR 7223 11 rue P. et M. Curie, 75231 Paris Cedex 05, France
| | - Véronique Michelet
- Chimie ParisTech, Laboratoire Charles Friedel, UMR 7223 11 rue P. et M. Curie, 75231 Paris Cedex 05, France
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49
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Qiu D, Zheng Z, Mo F, Xiao Q, Tian Y, Zhang Y, Wang J. Gold(III)-Catalyzed Direct Acetoxylation of Arenes with Iodobenzene Diacetate. Org Lett 2011; 13:4988-91. [DOI: 10.1021/ol202075x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Di Qiu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhitong Zheng
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Fanyang Mo
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Qing Xiao
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Yu Tian
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Yan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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50
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Lubriks D, Sokolovs I, Suna E. Iodonium Salts Are Key Intermediates in Pd-Catalyzed Acetoxylation of Pyrroles. Org Lett 2011; 13:4324-7. [DOI: 10.1021/ol201665c] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Dmitrijs Lubriks
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia
| | - Igors Sokolovs
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia
| | - Edgars Suna
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006, Riga, Latvia
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