1
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Mao Y, Chen W, Li C, Miao L, Lin Y, Ling F, Chen Z, Yao J. Synthesis of 3,4,5-trisubstituted phenols via Rh(III)-catalyzed alkenyl C-H activation assisted by phosphonium cations. Chem Commun (Camb) 2023; 59:3775-3778. [PMID: 36912283 DOI: 10.1039/d3cc00017f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
An efficient method for the construction of various 3,4,5-trisubstituted phenol derivatives has been achieved via the Rh(III)-catalyzed coupling of phosphonium cations with internal alkynes. This protocol shows good substrate compatibility, as an array of structurally and electronically diverse phosphonium compounds react efficiently with up to 87% yield.
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Affiliation(s)
- Yan Mao
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China.
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Wenxi Chen
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China.
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Changchang Li
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Lin Miao
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Yanfei Lin
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Fei Ling
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Zhangpei Chen
- Center for Molecular Science and Engineering, College of Science, Northeastern University, Shenyang 110819, China.
| | - Jinzhong Yao
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
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2
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Chen W, Mao Y, Wang M, Ling F, Li C, Chen Z, Yao J. Rh(III)-catalyzed [4 + 1] cyclization of aryl substituted pyrazoles with cyclopropanols via C-H activation. Org Biomol Chem 2023; 21:775-782. [PMID: 36594518 DOI: 10.1039/d2ob02001g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A rhodium-catalyzed formal [4 + 1]-cyclization reaction of aryl substituted pyrazoles with cyclopropanols via C-H bond activation/cyclization processes to selectively construct a series of carbonyl functionalized pyrazolo[5,1-a]isoindoles is described. The reaction features good functional group compatibility and a broad substrate scope with respect to both cyclization components with up to 84% yields. Mechanistic studies indicated that the C-H cleavage might be the rate-determining step in this transformation.
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Affiliation(s)
- Wenxi Chen
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China. .,College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Yan Mao
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China. .,College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Min Wang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China. .,College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Fei Ling
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Changchang Li
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Zhangpei Chen
- Center for Molecular Science and Engineering, College of Science, Northeastern University, Shenyang 110819, China.
| | - Jinzhong Yao
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
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3
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Recent Strategies in Transition-Metal-Catalyzed Sequential C–H Activation/Annulation for One-Step Construction of Functionalized Indazole Derivatives. Molecules 2022; 27:molecules27154942. [PMID: 35956893 PMCID: PMC9370621 DOI: 10.3390/molecules27154942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 11/17/2022] Open
Abstract
Designing new synthetic strategies for indazoles is a prominent topic in contemporary research. The transition-metal-catalyzed C–H activation/annulation sequence has arisen as a favorable tool to construct functionalized indazole derivatives with improved tolerance in medicinal applications, functional flexibility, and structural complexity. In the current review article, we aim to outline and summarize the most common synthetic protocols to use in the synthesis of target indazoles via a transition-metal-catalyzed C–H activation/annulation sequence for the one-step synthesis of functionalized indazole derivatives. We categorized the text according to the metal salts used in the reactions. Some metal salts were used as catalysts, and others may have been used as oxidants and/or for the activation of precatalysts. The roles of some metal salts in the corresponding reaction mechanisms have not been identified. It can be expected that the current synopsis will provide accessible practical guidance to colleagues interested in the subject.
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4
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Deng C, Li C, Yao J, Jin Q, Miao M, Zhou H. Rh(III)‐Catalyzed [4+2] Cyclization of 2‐Aryl‐1
H
‐benzo[
d
]imidazoles with Maleimides via C‐H Activation. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100612] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chen Deng
- College of Biological Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 P. R. China
- Department of Chemistry Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci-Tech University Hangzhou Zhejiang 310018 P. R. China
| | - Changchang Li
- College of Biological Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 P. R. China
| | - Jinzhong Yao
- College of Biological Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 P. R. China
| | - Quanli Jin
- College of Biological Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 P. R. China
| | - Maozhong Miao
- Department of Chemistry Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province Zhejiang Sci-Tech University Hangzhou Zhejiang 310018 P. R. China
| | - Hongwei Zhou
- College of Biological Chemical Sciences and Engineering Jiaxing University Jiaxing 314001 P. R. China
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5
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Nitrene-mediated intermolecular N-N coupling for efficient synthesis of hydrazides. Nat Chem 2021; 13:378-385. [PMID: 33753917 DOI: 10.1038/s41557-021-00650-0] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 02/01/2021] [Indexed: 01/31/2023]
Abstract
N-N linkages are found in many natural compounds and endow fascinating structural and functional properties. In comparison to the myriad methods for the construction of C-N bonds, chemistry for N-N coupling, especially in an intermolecular fashion, remains underdeveloped. Here, we report a nitrene-mediated intermolecular N-N coupling of dioxazolones and arylamines under iridium or iron catalysis. These reactions offer a simple and efficient method for the synthesis of various hydrazides from readily available carboxylic acid and amine precursors. Although the Ir-catalysed conditions usually give higher N-N coupling yield than the Fe-catalysed conditions, the reactions of sterically more demanding dioxazolones derived from α-substituted carboxylic acids work much better under the Fe-catalysed conditions. Mechanistic studies revealed that the nitrogen atom of Ir acyl nitrene intermediates has strong electrophilicity and can undergo nucleophilic attack with arylamines with the assistance of Cl···HN hydrogen bonding to form the N-N bond with high efficiency and chemoselectivity.
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6
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Santhoshkumar R, Cheng CH. Reaching Green: Heterocycle Synthesis by Transition Metal-Catalyzed C-H Functionalization in Sustainable Medium. Chemistry 2019; 25:9366-9384. [PMID: 31116458 DOI: 10.1002/chem.201901026] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/26/2019] [Indexed: 01/18/2023]
Abstract
Catalytic C-H functionalization has emerged as an efficient alternative to traditional coupling reactions. However, some of these reactions depend on environmentally harmful solvents, weakening the overall green nature of these methods. As organic processes consume large amount of solvents, the use of less harmful solvents enhance the sustainability of these reactions. Herein, we present an overview of transition metal-catalyzed C-H functionalization reactions for the synthesis of heterocycles in sustainable solvents based on CHEM21 solvent selection guide.
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Affiliation(s)
| | - Chien-Hong Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
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7
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Scholtysik C, Njiki Noufele C, Hagenbach A, Abram U. Complexes of Technetium(V) and Rhenium(V) with β-Diketonates. Inorg Chem 2019; 58:5241-5252. [PMID: 30920822 DOI: 10.1021/acs.inorgchem.9b00326] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reactions of (NBu4)[MOCl4] complexes (M = Tc or Re) with an excess of hexafluoroacetylacetone (Hhfac) give products with a composition of (NBu4)[MOCl3(hfac)] as bright yellow (Tc) or red (Re) solids. The products are stable as solids but rapidly decompose in solution. A number of related phenylimidorhenium(V) complexes were synthesized starting from [Re(NPhF)Cl3(PPh3)2], where (NPhF)2- is a para-fluorinated phenylimido ligand. Products with compositions of [Re(NPhF)Cl2(PPh3)(acac)], [Re(NPhF)Cl2(PPh3)(hfac)], [Re(NPhF)Cl2(PPh3)(tfac)], [Re(NPhF)Cl2(PPh3)(naphtfac)], and [Re(NPhF)Cl2(PPh3)(tbutfac)] (Hacac = acetylacetone, Htfac = trifluoroacetylacetone, Hnaphtfac = naphthoyltrifluoroacetylmethane, and Htbutfac = tert-butyroyltrifluoroacetylmethane) were isolated from reactions of the quite soluble [Re(NPhF)Cl3(PPh3)2] with the corresponding β-diketones and studied spectroscopically and by X-ray diffraction. The β-diketonates are coordinated in a meridional arrangement with the phenylimide. The formation of two isomers was detected for nonsymmetric β-diketones with a preference for the "equatorial" position for the more bulky substituents. Products with more than one chelating ligand were not obtained. The technetium complexes [Tc(NPhX)Cl3(PPh3)2] (X = p-F or p-CF3) were prepared from reactions of pertechnetate, PPh3, HCl, and substituted arylacetylhydrazines and isolated as green solids. They are sufficiently stable as solid but rapidly decompose in moist solvents upon hydrolysis of the Tc-N bonds. From reactions of [Tc(NPh)Cl3(PPh3)2] or [Tc(NPhF)Cl3(PPh3)2] in dry solvents, the complexes [Tc(NPh)Cl2(PPh3)(hfac)] and [Tc(NPhF)Cl2(PPh3)(hfac)] were prepared and isolated in crystalline form. An X-ray diffraction study shows that fluorination of the para position of the phenylimido ligand results in a slight lengthening of all bonds in the coordination sphere of technetium.
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Affiliation(s)
- Clemens Scholtysik
- Freie Universität Berlin , Institute of Chemistry and Biochemistry , Fabeckstrasse 34/36 , D-14195 Berlin , Germany
| | - Christelle Njiki Noufele
- Freie Universität Berlin , Institute of Chemistry and Biochemistry , Fabeckstrasse 34/36 , D-14195 Berlin , Germany
| | - Adelheid Hagenbach
- Freie Universität Berlin , Institute of Chemistry and Biochemistry , Fabeckstrasse 34/36 , D-14195 Berlin , Germany
| | - Ulrich Abram
- Freie Universität Berlin , Institute of Chemistry and Biochemistry , Fabeckstrasse 34/36 , D-14195 Berlin , Germany
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8
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Wu X, Ji H. Rhodium-Catalyzed [4 + 1] Cyclization via C-H Activation for the Synthesis of Divergent Heterocycles Bearing a Quaternary Carbon. J Org Chem 2018; 83:4650-4656. [PMID: 29608841 DOI: 10.1021/acs.joc.8b00397] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The development of an efficient approach to construct fused polycyclic systems bearing a quaternary carbon center represents a great challenge to synthetic chemistry. Herein, we report a Rh(III)-catalyzed [4 + 1] annulation of propargyl alcohols with various heterocyclic scaffolds under an air atmosphere. Diverse fused heterocycles containing a quaternary carbon center were obtained in moderate to good yields. Additionally, this method features a high atom-economy, metal oxidant free, simple operation, and compatibility with various functional groups.
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Affiliation(s)
- Xiaowei Wu
- Drug Discovery Department , H. Lee Moffitt Cancer Center and Research Institute , 12902 Magnolia Drive , Tampa , Florida 33612-9416 , United States
| | - Haitao Ji
- Drug Discovery Department , H. Lee Moffitt Cancer Center and Research Institute , 12902 Magnolia Drive , Tampa , Florida 33612-9416 , United States.,Departments of Oncologic Sciences and Chemistry , University of South Florida , Tampa , Florida 33612 , United States
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9
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Indazoles: Synthesis and Bond-Forming Heterocyclization. ADVANCES IN HETEROCYCLIC CHEMISTRY 2018. [DOI: 10.1016/bs.aihch.2017.10.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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10
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Gholamhosseyni M, Kianmehr E. A ruthenium-catalyzed alkenylation–annulation approach for the synthesis of indazole derivatives via C–H bond activation. Org Biomol Chem 2018; 16:5973-5978. [DOI: 10.1039/c8ob00999f] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A new approach to indazole derivatives through a Ru(ii)-catalyzed C–H activation–annulation reaction, which proceeds via C–C and C–N bond forming reactions, is reported.
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Affiliation(s)
| | - Ebrahim Kianmehr
- School of Chemistry
- College of science
- University of Tehran
- Tehran 1417614411
- Iran
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11
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Lv N, Liu Y, Xiong C, Liu Z, Zhang Y. Cobalt-Catalyzed Oxidant-Free Spirocycle Synthesis by Liberation of Hydrogen. Org Lett 2017; 19:4640-4643. [DOI: 10.1021/acs.orglett.7b02266] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Ningning Lv
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yue Liu
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Chunhua Xiong
- Department
of Applied Chemistry, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Zhanxiang Liu
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yuhong Zhang
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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12
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Lv N, Chen Z, Liu Y, Liu Z, Zhang Y. Synthesis of Functionalized Indenones via Rh-Catalyzed C–H Activation Cascade Reaction. Org Lett 2017; 19:2588-2591. [DOI: 10.1021/acs.orglett.7b00906] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ningning Lv
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zhengkai Chen
- Department
of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yue Liu
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zhanxiang Liu
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yuhong Zhang
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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13
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Rhodium(III)-catalyzed coupling of aromatic ketazines or oximes with 2-vinyloxirane via C–H activation. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.08.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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14
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Muralirajan K, Haridharan R, Prakash S, Cheng CH. Rhodium(III)-Catalyzed in situ Oxidizing Directing Group- Assisted CH Bond Activation and Olefination: A Route to 2-Vinylanilines. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400791] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Ding Q, Liu T, Zheng Q, Zhang Y, Long L, Peng Y. Rh(iii)-catalyzed tandem oxidative olefination-cyclization of aryl sulfonamides. RSC Adv 2014. [DOI: 10.1039/c4ra09041a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
An efficient Rh(iii)-catalyzed ortho-selective C–H activation and tandem oxidative olefination-cyclization of aryl sulfonamides is described. The protocol has been applied to various substrates with good functional group tolerance.
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Affiliation(s)
- Qiuping Ding
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang, China
| | - Tong Liu
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang, China
| | - Qiang Zheng
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang, China
| | - Yadong Zhang
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang, China
| | - Ling Long
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang, China
| | - Yiyuan Peng
- Key Laboratory of Small Functional Organic Molecule
- Ministry of Education and Jiangxi's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang, China
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