1
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Shao Z, Wang F, Shi J, Ma L, Li Z. Synergetic copper/TEMPO-catalysed benzylic C–H imidation with N-fluorobenzenesulfonimide at room temperature and tandem conversions with alcohols or arenes. Org Chem Front 2021. [DOI: 10.1039/d1qo00340b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A remote carbamate-directed benzylic C–H imidation with NFSI at room temperature through synergetic CuCl-TEMPO catalysis and tandem alkoxylation or arylation with alcohols or arenes are described.
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Affiliation(s)
- Zhong Shao
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Fang Wang
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Jingqi Shi
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Lifang Ma
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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2
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Bao F, Cao Y, Liu W, Zhu J. Ligand-free iron-catalyzed benzylic C (sp3)–H amination of methylarenes with N-fluorobenzenesulfonimide. RSC Adv 2019; 9:27892-27895. [PMID: 35530456 PMCID: PMC9070760 DOI: 10.1039/c9ra05294a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 08/28/2019] [Indexed: 11/21/2022] Open
Abstract
The first biocompatible iron-catalyzed benzylic C (sp3)–H amination of methylarenes with NFSI under ligand and additional oxidant free conditions is described.
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Affiliation(s)
- Fengyu Bao
- College of Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Yuanbo Cao
- College of Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Wenbo Liu
- College of Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
| | - Junhao Zhu
- College of Science
- Henan Agricultural University
- Zhengzhou 450002
- P. R. China
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3
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Qian M, Qin B, Yuan H, Li W, Zhang J. Mechanistic insights into N-Bromosuccinimide-promoted synthesis of imidazo[1,2-a]pyridine in water: Reactivity mediated by substrates and solvent. J Comput Chem 2018; 39:2324-2332. [PMID: 30238601 DOI: 10.1002/jcc.25564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 07/05/2018] [Accepted: 07/27/2018] [Indexed: 12/22/2022]
Abstract
The mechanism of N-Bromosuccinimide (NBS) promoted synthesis of imidazo[1,2-a]pyridine in water as well as the effective activation modes of NBS was investigated by Density Functional Theory (DFT) calculations. Two main mechanisms that differ in the reaction sequence of substrate were explored: styrene with NBS then followed by 2-aminopyridine (M1) or simultaneously with NBS and 2-aminopyridine (M2), and water-assisted M2 is the more favored one. We found that the adding sequence of 2-aminopyridine affects profoundly on the title reaction. Moreover, upon the assistance of water and NBS, the preferential mechanistic scenario involves three major processes: nucleophilic addition, stepwise H-shift and intramolecular cyclization, three-step deprotonation, rather than a classical bromonium ion species. Specifically, the cooperative interaction of NBS and water plays a critical role in the title reaction. Water acts as solvent, reactant, anchoring, stabilizer, and catalyst. NBS promotes the above three processes by the effective forms of Br+ /Br- , succinimide, and its ethanol isomer. Furthermore, noncovalent interactions between catalysts and substrates are responsible for the different reactive activities of M1 and M2. Our results indicate that simultaneous adding of all reactants is recommended toward economical synthesis. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Min Qian
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Bowen Qin
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Haiyan Yuan
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Wenliang Li
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Jingping Zhang
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
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4
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Lei B, Wang X, Ma L, Li Y, Li Z. NFSI-participated intermolecular aminoazidation of alkene through iron catalysis. Org Biomol Chem 2018; 16:3109-3113. [DOI: 10.1039/c8ob00699g] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An iron-catalysed intermolecular vicinal aminoazidation of alkene with NFSI is reported, with broader alkene scope comparing to previously reported aminoazidation.
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Affiliation(s)
- Bowen Lei
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Xiaojiao Wang
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Lifang Ma
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Yan Li
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Ziyuan Li
- Department of Pharmaceutical and Biological Engineering
- School of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
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5
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Xie P, Guo W, Chen D, Xia Y. Multiple pathways for C–H cleavage in cationic Cp*Rh(iii)-catalyzed C–H activation without carboxylate assistance: a computational study. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00870a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Multiple pathways for C–H cleavage was uncovered in cationic Cp*Rh(iii)-catalyzed C–H functionalization with different heteroatom-containing species as possible proton acceptors.
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Affiliation(s)
- Peipei Xie
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Wei Guo
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Dimei Chen
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
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6
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Pei G, Liu Y, Chen G, Yuan X, Jiang YY, Bi S. Unveiling the mechanisms and secrets of chemoselectivities in Au(i)-catalyzed diazo-based couplings with aryl unsaturated aliphatic alcohols. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01352g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The mechanisms and origins of the unsaturated-aliphatic-alcohols-modulated chemoselectivity of Au-catalyzed carbene transfers from diazo compounds are disclosed by DFT studies.
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Affiliation(s)
- Guojing Pei
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Yuxia Liu
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Guang Chen
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
- Institute of Functional Materials and Molecular Imaging
| | - Xiangai Yuan
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Yuan-Ye Jiang
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
| | - Siwei Bi
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- P. R. China
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7
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8
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Ding J, Li W, Ye K, Li J. The Highly Regioselective Halogenation of N-(8-quinolinyl)amides on the C-5 Position with Cuprous Halides Under Mild Conditions. ChemistrySelect 2016. [DOI: 10.1002/slct.201601108] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Junshuai Ding
- Department of Organic Chemistry; College of Chemistry; Jilin University; Jiefang Road 2519 Changchun 130023 China
| | - Wanru Li
- Department of Organic Chemistry; College of Chemistry; Jilin University; Jiefang Road 2519 Changchun 130023 China
| | - Kaiqi Ye
- Department of Organic Chemistry; College of Chemistry; Jilin University; Jiefang Road 2519 Changchun 130023 China
| | - Jizhen Li
- Department of Organic Chemistry; College of Chemistry; Jilin University; Jiefang Road 2519 Changchun 130023 China
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9
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Liu J, Zheng Y, Liu Y, Yuan H, Zhang J. Mechanistic insight on (E)-methyl 3-(2-aminophenyl)acrylate cyclization reaction by multicatalysis of solvent and substrate. J Comput Chem 2016; 37:2386-94. [PMID: 27487815 DOI: 10.1002/jcc.24463] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 07/11/2016] [Accepted: 07/11/2016] [Indexed: 12/17/2022]
Abstract
The reaction mechanism of (E)-methyl 3-(2-aminophenyl)acrylate (A) with phenylisothiocyanate (B) as well as the vital roles of substrate A and solvent water were investigated under unassisted, water-assisted, substrate A-assisted, and water-A-assisted conditions. The reaction proceeds with four processes via nucleophilic addition, deprotonation and protonation, intramolecular cyclization with hydrogen transfer, and keto-enol tautomerization. According to the different H-shift mode, two possible types of H-shift P1 and P2 are carefully investigated to identify the most preferred pathway, differing in the NH2 group deprotonation and CH group of A protonation processes. It is found that substrate A and water not only act as reactant and solvent, but also as catalyst, proton shuttle, and stabilizer in effectively lowering the energy barrier. Therefore, the results demonstrate that the strong donating and accepting ability of NH2 group on A and the presence of bulk water are the keys to the title reaction proceed. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Jiahui Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Renmin Street 5268#, Changchun, 130024, China
| | - Yiying Zheng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Renmin Street 5268#, Changchun, 130024, China
| | - Ying Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Renmin Street 5268#, Changchun, 130024, China
| | - Haiyan Yuan
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Renmin Street 5268#, Changchun, 130024, China.
| | - Jingping Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Renmin Street 5268#, Changchun, 130024, China.
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10
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Chu XQ, Xu XP, Ji SJ. TBAI-Catalyzed/Water-Assisted Double C−S Bond Formations: An Efficient Approach to Sulfides through Metal-Free Three-Component Reactions. Chemistry 2016; 22:14181-5. [DOI: 10.1002/chem.201603099] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Indexed: 01/30/2023]
Affiliation(s)
- Xue-Qiang Chu
- Key Laboratory of Organic Synthesis of Jiangsu Province; College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 China
| | - Xiao-Ping Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province; College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 China
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province; College of Chemistry, Chemical Engineering and Materials Science; Collaborative Innovation Center of Suzhou Nano Science and Technology; Soochow University; Suzhou 215123 China
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11
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Rauf W, Brown JM. Palladium-catalysed directed C–H activation by anilides and ureas; water participation in a general base mechanism. Org Biomol Chem 2016; 14:5251-7. [DOI: 10.1039/c6ob00897f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general-base pathway for CH-activation in anilides and ureas en route to palladacycles was developed through DFT calculations and fits available evidence.
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Affiliation(s)
- Waqar Rauf
- Chemistry Research Laboratory
- Oxford University
- Oxford OX1 3QY
- UK
- Health Biotechnology Division
| | - John M. Brown
- Chemistry Research Laboratory
- Oxford University
- Oxford OX1 3QY
- UK
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12
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Pollice R, Dastbaravardeh N, Marquise N, Mihovilovic MD, Schnürch M. Mechanistic and Kinetic Studies of the Direct Alkylation of Benzylic Amines: A Formal C(sp 3)-H Activation Proceeds Actually via a C(sp 2)-H Activation Pathway. ACS Catal 2015; 5:587-595. [PMID: 25838971 PMCID: PMC4372103 DOI: 10.1021/cs501924c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Indexed: 01/18/2023]
Abstract
Mechanistic investigations of a Rh(I)-catalyzed direct C-H alkylation of benzylic amines with alkenes, formally an C(sp3)-H activation, reveal this reaction to proceed via imine intermediates and, hence, via C(sp2)-H activation. The reaction shows a primary kinetic isotope effect of 4.3 at the benzylic C-H position together with a reversible H-D exchange at the same position, which indicates that there are at least two distinct steps in which the corresponding C-H bonds are broken. The imine intermediates are shown to be converted to the final product under the reaction conditions, and a time course analysis of the alkylated imine intermediate shows that it is formed before the final amine product in the course of the reaction.
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Affiliation(s)
- Robert Pollice
- Institute of Applied Synthetic
Chemistry, Vienna University of Technology, Getreidemarkt 9/163-OC, Vienna 1060, Austria
| | | | - Nada Marquise
- Institute of Applied Synthetic
Chemistry, Vienna University of Technology, Getreidemarkt 9/163-OC, Vienna 1060, Austria
| | - Marko D. Mihovilovic
- Institute of Applied Synthetic
Chemistry, Vienna University of Technology, Getreidemarkt 9/163-OC, Vienna 1060, Austria
| | - Michael Schnürch
- Institute of Applied Synthetic
Chemistry, Vienna University of Technology, Getreidemarkt 9/163-OC, Vienna 1060, Austria
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13
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Liu B, Li B, Wang B. Ru(ii)-catalyzed amidation reactions of 8-methylquinolines with azides via C(sp3)–H activation. Chem Commun (Camb) 2015; 51:16334-7. [DOI: 10.1039/c5cc06230f] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Ru(ii)-catalyzed amidation reactions of 8-methylquinolines with azides have been developed through C(sp3)–H bond activation to give quinolin-8-ylmethanamines in good yields.
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Affiliation(s)
- Bingxian Liu
- State Key Laboratory of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Bin Li
- State Key Laboratory of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Baiquan Wang
- State Key Laboratory of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
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14
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Wang N, Li R, Li L, Xu S, Song H, Wang B. Rhodium(III)-Catalyzed Intermolecular Amidation with Azides via C(sp3)–H Functionalization. J Org Chem 2014; 79:5379-85. [DOI: 10.1021/jo5008515] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Nuancheng Wang
- State
Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Renhe Li
- State
Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Liubo Li
- State
Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Shansheng Xu
- State
Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Haibin Song
- State
Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Baiquan Wang
- State
Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin 300071, China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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