1
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Cui J, Wang X, Zeng R. Directed copper-catalyzed C-H functionalization of unactivated olefins with azodicarbonamide compounds. RSC Adv 2024; 14:27475-27480. [PMID: 39221125 PMCID: PMC11359497 DOI: 10.1039/d4ra04113e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Accepted: 08/05/2024] [Indexed: 09/04/2024] Open
Abstract
The copper-catalyzed strategy employing the 8-aminoquinoline directing group has proven to be a highly advantageous approach for functionalizing C-H bonds. In this study, we present the successful application of this strategy to accomplish Heck-type coupling reactions and construct β-lactam skeletons, simultaneously introducing a unique cyano functional group. The resulting Heck-type coupling products demonstrate good stereo- and region-selectivity. Initial mechanistic investigations indicate that the reaction proceeds via a radical coupling mechanism, exhibiting a wide substrate scope and delivering good yields.
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Affiliation(s)
- Jing Cui
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Xiaoya Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Runsheng Zeng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
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2
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Liu Q, Wang X, Gu X, Dai H, Huang Z, Zhao Y. Visible-Light-Induced Difunctionalization of 3-Butenoic Acid with Bromodifluoromethyl Heteroarylsulfones. Org Lett 2024; 26:6449-6453. [PMID: 39037910 DOI: 10.1021/acs.orglett.4c02277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
Herein, we report a visible-light-induced iridium-promoted direct bifunctionalization of 3-butenoic acid with bromodifluoromethyl heteroarylsulfones. This methodology enables the concurrent introduction of difluoromethyl heteroarylsulfone and bromine groups into 3-butenoic acid under mild reaction conditions. Various α-substituted 3-butenoic acids and bromodifluoromethyl heteroarylsulfones were found to be compatible, yielding the corresponding products in moderate to good yields. This method opens a new route for the synthesis of fluorocarboxylic acid derivatives.
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Affiliation(s)
- Qianqian Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, P. R. China
| | - Xiaoping Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, P. R. China
| | - Xuefeng Gu
- Yonghua Chemical Co., Ltd., Xiangqiao Village, Zhitang (heshi) Town, Changshu 215500, P. R. China
| | - Huiming Dai
- Yonghua Chemical Co., Ltd., Xiangqiao Village, Zhitang (heshi) Town, Changshu 215500, P. R. China
| | - Zhibin Huang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, P. R. China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, P. R. China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453000, P. R. China
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3
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Liu Q, Zhou Z, Huang Z, Zhao Y. Palladium-Catalyzed E-Selective Oxidative Amination of Aromatic Amine with 3-Butenoic Acid. J Org Chem 2023; 88:15350-15357. [PMID: 37871285 DOI: 10.1021/acs.joc.3c01843] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
A palladium-catalyzed oxidative amination of inactive olefins with an aromatic amine was developed using a copper acetate oxidant to yield corresponding secondary and tertiary enamines in moderate to good yields. This new procedure outlines an efficient approach for the construction of enamine skeletons.
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Affiliation(s)
- Qianqian Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, PR China
| | - Zheng Zhou
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, PR China
| | - Zhibin Huang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, PR China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, PR China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453000, P. R. China
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4
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Lu XY, Wang JC, Sun XM, Gao MT, Ying WJ, Ge MY, Wei ZH, Liu Z, Chen XK. Photoredox/Nickel Dual-Catalyzed Stereoselective Synthesis of Distal Cyano-Substituted Enamides. J Org Chem 2023; 88:513-524. [PMID: 36545950 DOI: 10.1021/acs.joc.2c02497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Herein, the efficient photoredox/nickel dual-catalyzed cyanoalkylation reaction of enamides is illustrated. A wide scope of enamides and cycloketone oxime esters was well-tolerated, affording the synthetically versatile and geometrically defined β-cyanoalkylated enamide scaffolds. The synthetic practicality of this protocol was revealed by gram-scale reactions, further transformations of enamides, and late-stage modifications of biologically active molecules.
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Affiliation(s)
- Xiao-Yu Lu
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China.,School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, China
| | - Jun-Chao Wang
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Xiao-Mei Sun
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Meng-Ting Gao
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Weng-Jing Ying
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Meng-Yuan Ge
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Zheng-Huan Wei
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Zi Liu
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
| | - Xing-Ke Chen
- School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, China
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5
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Divergent regioselective Heck-type reaction of unactivated alkenes and N-fluoro-sulfonamides. Nat Commun 2022; 13:6297. [PMID: 36272976 PMCID: PMC9588056 DOI: 10.1038/s41467-022-33996-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 10/10/2022] [Indexed: 12/02/2022] Open
Abstract
The control of regioselectivity in Heck-type reaction of unactivated alkenes represents a longstanding challenge due to several detachable hydrogens in β–H elimination step, which generally afford either one specific regioisomer or a mixture. Herein, a copper-catalyzed intermolecular Heck-type reaction of unactivated alkenes and N-fluoro-sulfonamides with divergent regioselectivities is reported. The complete switch of regioselectivity mainly depends on the choice of different additives. Employment of alcohol solvent gives access to vinyl products, while the addition of carboxylate leads to the formation of allylic products. In addition, exclusion of these two promoting factors results in β-lactams via a C–N reductive elimination. This protocol shows a broad substrate scope for both alkenes and structurally diverse N-fluoro-sulfonamides, producing the corresponding products with excellent regio- and stereoselectivities. Further control experiments and DFT calculations provide in-depth insights into the reaction mechanism, highlighting the distinct effect of the additives on a bidentate auxiliary-stabilized Cu(III) intermediate. The control of regioselectivity in Heck-type reactions of unactivated alkenes is challenging. Here, the authors realize regiodivergent Heck-type reactions of unactivated alkenes and N-fluoro-sulfonamides.
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6
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Müller N, Schreib BS, Leutenegger SU, Carreira EM. Picolinamides and Iodoalkynes Enable Palladium-Catalyzed syn-Aminoalkynylation of Di- and Trisubstituted Alkenes to Give Pyrrolidines. Angew Chem Int Ed Engl 2022; 61:e202204535. [PMID: 35445778 PMCID: PMC9545406 DOI: 10.1002/anie.202204535] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Indexed: 12/15/2022]
Abstract
Palladium-catalyzed aminoalkynylation of electronically unbiased olefins with iodoalkynes is reported. The picolinamide auxiliary enables for the first time the syn-selective aminoalkynylation of mono-, di- and trisubstituted alkenes to afford the corresponding pyrrolidines in up to 97 % yield and as single diastereomers. Furthermore, through a C-H activation approach, the picolinamide allows the rapid synthesis of functionalized olefins, which are suitable cyclization precursors. Facile and orthogonal deprotection of the amides and Sii Pr3 -acetylenes in the products, and a subsequent Pictet-Spengler reaction is demonstrated.
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Affiliation(s)
- Nicolas Müller
- Laboratorium für Organische Chemie, HCI H335, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Benedikt S Schreib
- Laboratorium für Organische Chemie, HCI H335, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Sebastian U Leutenegger
- Laboratorium für Organische Chemie, HCI H335, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Erick M Carreira
- Laboratorium für Organische Chemie, HCI H335, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
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7
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Yang X, Xia Y, Tong J, Ouyang L, Lai Y, Luo R, Liao J. Photoinduced radical cascade cyclization of acetylenic acid esters with oxime esters to access cyanalkylated coumarins. Org Biomol Chem 2022; 20:5239-5244. [PMID: 35723258 DOI: 10.1039/d2ob00612j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photoinduced radical cascade cyclization of acetylenic acid esters with oxime esters is described, providing cyanalkylated coumarins in superior yields under mild conditions. Radical capture and luminescence quenching experiments showed that this transformation was accomplished via a radical addition/5-exo spirocyclization/1,2-ester migration process.
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Affiliation(s)
- Xiao Yang
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, 341000, Jiangxi Province, China.
| | - Yanping Xia
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, 341000, Jiangxi Province, China.
| | - Jinghui Tong
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, 341000, Jiangxi Province, China.
| | - Lu Ouyang
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, 341000, Jiangxi Province, China.
| | - Yinlong Lai
- College of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan 512005, China
| | - Renshi Luo
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, 341000, Jiangxi Province, China. .,College of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan 512005, China
| | - Jianhua Liao
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, 341000, Jiangxi Province, China. .,College of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan 512005, China
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8
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Müller N, Schreib BS, Leutenegger SU, Carreira EM. Picolinamides and Iodoalkynes Enable Palladium‐Catalyzed syn‐Aminoalkynylation of Di‐ and Trisubstituted Alkenes to Give Pyrrolidines. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nicolas Müller
- University of Innsbruck: Universitat Innsbruck Chemistry AUSTRIA
| | - Benedikt S Schreib
- Eidgenössische Technische Hochschule Zürich: Eidgenossische Technische Hochschule Zurich DCHAB SWITZERLAND
| | - Sebastian U Leutenegger
- Eidgenössische Technische Hochschule Zürich: Eidgenossische Technische Hochschule Zurich DCHAB SWITZERLAND
| | - Erick Moran Carreira
- ETH-Hönggerberg Laboratorium für Anorganische Chemie Vladimir Prelog Weg 3HCl H335 8093 Zürich SWITZERLAND
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9
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Alisha M, Philip RM, Anilkumar G. Low‐cost transition metal catalyzed Heck type reactions: An Overview. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mathews Alisha
- Mahatma Gandhi University School of Chemical Sciences INDIA
| | | | - Gopinathan Anilkumar
- Mahatma Gandhi University School of Chemical Sciences Priyadarsini Hills P O 686560 KOTTAYAM INDIA
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10
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Shen G, Fu S, Liu B. Oxime ester-enabled anti-Markovnikov hydrosilylation of alkenes. Chem Commun (Camb) 2022; 58:12204-12207. [DOI: 10.1039/d2cc03917f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An oxime ester-enabled anti-Markovnikov hydrosilylation of alkenes is developed.
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Affiliation(s)
- Guo Shen
- Key Laboratory of Green Chemistry &Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Shaomin Fu
- Key Laboratory of Green Chemistry &Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Bo Liu
- Key Laboratory of Green Chemistry &Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
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11
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Wu Z, Li X, Li T, Xiao T, Jiang Y, Qin G. Fe-catalyzed denitrative cyanoalkylation of nitroalkenes with cycloketone oxime esters via reductive C–C bond formation. Org Chem Front 2022. [DOI: 10.1039/d2qo00992g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
An iron catalyzed reductive denitrative cyanoalkylation of nitroalkenes with cycloketone oxime esters using Zn as the reductant has been successfully established in which the NO2 of nitroalkenes eventually acts as a leaving group.
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Affiliation(s)
- Zefeng Wu
- Faculty of Science, Kunming University of Science and Technology, 727 Jingming South Road, Chenggong District, Kunming, 650500, P. R. China
| | - Xiangxiang Li
- Faculty of Science, Kunming University of Science and Technology, 727 Jingming South Road, Chenggong District, Kunming, 650500, P. R. China
| | - Tao Li
- Faculty of Science, Kunming University of Science and Technology, 727 Jingming South Road, Chenggong District, Kunming, 650500, P. R. China
| | - Tiebo Xiao
- Faculty of Science, Kunming University of Science and Technology, 727 Jingming South Road, Chenggong District, Kunming, 650500, P. R. China
| | - Yubo Jiang
- Faculty of Science, Kunming University of Science and Technology, 727 Jingming South Road, Chenggong District, Kunming, 650500, P. R. China
| | - Guiping Qin
- Faculty of Science, Kunming University of Science and Technology, 727 Jingming South Road, Chenggong District, Kunming, 650500, P. R. China
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12
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Ni HQ, Li ZQ, Tran VT, Engle KM. Modular synthesis of non-conjugated N-(quinolin-8-yl) alkenyl amides via cross-metathesis. Tetrahedron 2021; 93:132279. [PMID: 34393281 PMCID: PMC8360400 DOI: 10.1016/j.tet.2021.132279] [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] [Indexed: 10/21/2022]
Abstract
We report a direct and modular method to access non-conjugated alkenyl amides containing the 8-aminoquinoline (AQ) directing auxiliary and related groups via cross-metathesis. In this way, readily available, AQ-containing, terminal β,γ-unsaturated amides can be coupled with various terminal alkenes to furnish internal alkene products that are otherwise difficult to prepare. The value of this family of products stems from their ability to participate in a number of directed alkene functionalization reactions.
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Affiliation(s)
- Hui-Qi Ni
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Zi-Qi Li
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Van T Tran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Keary M Engle
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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13
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Song Y, Fu C, Ma S. Copper-Catalyzed Syntheses of Multiple Functionalizatized Allenes via Three-Component Reaction of Enynes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02140] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yulong Song
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, People’s Republic of China
| | - Chunling Fu
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, People’s Republic of China
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou 310027, Zhejiang, People’s Republic of China
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14
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Zhu X, Huang Y, Xu X, Qing F. Iron-catalyzed cyanoalkylation of difluoroenol silyl ethers with cyclobutanone oxime esters. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.07.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Guin S, Majee D, Samanta S. Recent Advances in Visible‐Light‐Driven Photocatalyzed γ‐Cyanoalkylation Reactions. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Soumitra Guin
- Department of Chemistry Indian Institute of TechnologyIndore 453552 Indore India
| | - Debashis Majee
- Department of Chemistry Indian Institute of TechnologyIndore 453552 Indore India
| | - Sampak Samanta
- Department of Chemistry Indian Institute of TechnologyIndore 453552 Indore India
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16
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Zheng X, Zhong T, Yi X, Shen Q, Yin C, Zhang L, Zhou J, Chen J, Yu C. Iron‐Catalyzed Three‐Component Cyanoalkylsulfonylation of 2,3‐Allenoic Acids, Sulfur Dioxide, and Cycloketone Oxime Esters: Access to Cyanoalkylsulfonylated Butenolides. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100463] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xiangyun Zheng
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Tianshuo Zhong
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Xiao Yi
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Qitao Shen
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chuanliu Yin
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Lei Zhang
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Jian Zhou
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Junyu Chen
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chuanming Yu
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
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17
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Zhang H, Lv X, Yu H, Bai Z, Chen G, He G. β-Lactam Synthesis via Copper-Catalyzed Directed Aminoalkylation of Unactivated Alkenes with Cyclobutanone O-Benzoyloximes. Org Lett 2021; 23:3620-3625. [DOI: 10.1021/acs.orglett.1c01007] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Heng Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiaoyan Lv
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Hanrui Yu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zibo Bai
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gong Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gang He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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18
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Fitzgerald LS, O'Duill ML. A Guide to Directing Group Removal: 8-Aminoquinoline. Chemistry 2021; 27:8411-8436. [PMID: 33559933 DOI: 10.1002/chem.202100093] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 02/08/2021] [Indexed: 12/23/2022]
Abstract
The use of directing groups allows high levels of selectivity to be achieved in transition metal-catalyzed transformations. Efficient removal of these auxiliaries after successful functionalization, however, can be very challenging. This review provides a critical overview of strategies used for removal of Daugulis' 8-aminoquinoline (2005-2020), one of the most widely used N,N-bidentate directing groups. The limitations of these strategies are discussed and alternative approaches are suggested for challenging substrates. Our aim is to provide a comprehensive end-users' guide for chemists in academia and industry who want to harness the synthetic power of directing groups-and be able to remove them from their final products.
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Affiliation(s)
- Liam S Fitzgerald
- School of Chemistry, National University of Ireland Galway, University Road, Galway, H91 TK33, Ireland
| | - Miriam L O'Duill
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
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19
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Li M, Wang CT, Bao QF, Qiu YF, Wei WX, Li XS, Wang YZ, Zhang Z, Wang JL, Liang YM. Copper-Catalyzed Radical Aryl Migration Approach for the Preparation of Cyanoalkylsulfonylated Oxindoles/Cyanoalkyl Amides. Org Lett 2021; 23:751-756. [DOI: 10.1021/acs.orglett.0c03973] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ming Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Cui-Tian Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Qiao-Fei Bao
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yi-Feng Qiu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Wan-Xu Wei
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Xue-Song Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yu-Zhao Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Zhe Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Jin-Lin Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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20
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Zhou N, Wu S, Kuang K, Xia Z, Xu Q, Zhang M. A photoredox- or metal-catalyzed three-component cyanoalkylsulfonylation reaction of 1-(allyloxy)-2-(1-arylvinyl)benzenes, potassium metabisulfite, and cycloketone oxime esters: synthesis of cyanoalkylsulfonylated benzoxepines. Org Chem Front 2021. [DOI: 10.1039/d1qo01183a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A visible light photocatalyzed or metal-catalyzed three-component cyanoalkylsulfonylation of 1-(allyloxy)-2-(1-arylvinyl)benzenes, potassium metabisulfite and cyclobutanone oxime esters is developed.
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Affiliation(s)
- Nengneng Zhou
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Sixin Wu
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Kaimo Kuang
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Ziqin Xia
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Qiankun Xu
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Man Zhang
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
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21
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Bai Z, Zhang H, Wang H, Yu H, Chen G, He G. Enantioselective Alkylamination of Unactivated Alkenes under Copper Catalysis. J Am Chem Soc 2020; 143:1195-1202. [PMID: 33378201 DOI: 10.1021/jacs.0c12333] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An enantioselective addition reaction of various alkyl groups to unactivated internal alkenes under Cu catalysis has been developed. The reaction uses amide-linked aminoquinoline as the directing group, 4-alkyl Hantzsch esters as the donor of alkyl radicals, and rarely used biaryl diphosphine oxide as a chiral ligand. β-lactams featuring two contiguous stereocenters at Cβ and the β substituent can be obtained in good yield with excellent enantioselectivity. Mechanistic studies indicate that a nucleophilic addition of the alkyl radical to CuII-coordinated alkene is the enantio-determining step.
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Affiliation(s)
- Zibo Bai
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Heng Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Hao Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Hanrui Yu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gong Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gang He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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22
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Chen L, Jin S, Gao J, Liu T, Shao Y, Feng J, Wang K, Lu T, Du D. N-Heterocyclic Carbene/Magnesium Cocatalyzed Radical Relay Assembly of Aliphatic Keto Nitriles. Org Lett 2020; 23:394-399. [DOI: 10.1021/acs.orglett.0c03883] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Lei Chen
- School of Science, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Shiyi Jin
- School of Science, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jian Gao
- School of Science, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Tongtong Liu
- School of Science, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yuebo Shao
- School of Science, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jie Feng
- School of Science, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Kangyi Wang
- School of Science, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Tao Lu
- School of Science, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ding Du
- School of Science, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
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23
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Zhang J, Wang X, Kuang Y, Wu J. Generation of Sulfonylated Tetrazoles through an Iron-Catalyzed Multicomponent Reaction Involving Sulfur Dioxide. iScience 2020; 23:101872. [PMID: 33336165 PMCID: PMC7733023 DOI: 10.1016/j.isci.2020.101872] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/05/2020] [Accepted: 11/23/2020] [Indexed: 12/25/2022] Open
Abstract
As a privileged motif, tetrazoles can be widely found in pharmaceuticals and materials science. Herein, a five-component reaction of cycloketone oxime esters, alkynes, DABCO·(SO2)2, and two molecules of trimethylsilyl azide under iron catalysis is developed, giving rise to a range of cyano-containing sulfonylated tetrazoles in moderate to good yields. This multicomponent reaction exhibits excellent selectivity and enables the formation of multiple new chemical bonds in one pot. A possible mechanism involving azidosulfonylation of alkynes, C-C bond cleavage of both cycloketone oxime esters and alkynes, and [3 + 2] cycloaddition of trimethylsilyl azide and the nitrilium cation intermediate is proposed. Additionally, the potential of terminal alkynes acting as powerful synthons for the synthesis of tetrazoles in a radical initiated process is demonstrated for the first time. High-value tetrazole motifs were synthesized via a five-component reaction Fixing sulfur dioxide into tetrazole molecules under mild conditions Low-cost iron catalyst initiated the transformation Excellent selectivity with the formation of multiple new chemical bonds
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Affiliation(s)
- Jun Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Xuefeng Wang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Yunyan Kuang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering, Taizhou University, 1139 Shifu Avenue, Zhejiang 318000, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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24
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Gao Y, Quan Y, Li Z, Gao L, Zhang Z, Zou X, Yan R, Qu Y, Guo K. Organocatalytic Three-Component 1,2-Cyanoalkylacylation of Alkenes via Radical Relay. Org Lett 2020; 23:183-189. [PMID: 33336577 DOI: 10.1021/acs.orglett.0c03907] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Here, we report an unprecedented regioselective, intermolecular 1,2-cyanoalkylacylation of feedstock alkenes with readily available oxime esters and aldehydes by N-heterocyclic carbene (NHC) organocatalysis. The crux of this success is the exquisite control over the radical relay process by an NHC organocatalyst. This protocol offers a general platform for diversity-oriented synthesis of valuable ketonitriles under mild, transition-metal-free, and redox-neutral conditions and highlights its potential in the late-stage functionalization of pharmaceutical architectures and natural products.
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26
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Shi L, Fu J, Gao S, Chang L, Wang B. Recent Developments in Heck-Type Reaction of Unactivated Alkenes and Alkyl Electrophiles. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1705966] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
AbstractThe Mizoroki–Heck reaction is considered as one of the most ingenious and widely used methods for constructing C–C bonds. This reaction mainly focuses on activated olefins (styrenes, acrylates, or vinyl ethers) and aryl/vinyl (pseudo) halides. In comparison, the studies on unactivated alkenes and alkyl electrophiles are far less due to the low reactivity, poor selectivity, as well as competitive β-H elimination. In the past years, a growing interest has thus been devoted and significant breakthroughs have been achieved in the employment of unactivated alkenes and alkyl electrophiles as the reaction components, and this type of coupling is called as Heck-type or Heck-like reaction, which distinguishes from the traditional Heck reaction. Herein, we give a brief summary on Heck-type reaction between unactivated alkenes and alkyl electrophlies, covering its initial work, recent advancements, and mechanistic discussions.1 Introduction2 Intramolecular Heck-Type Reaction of Unactivated Alkenes and Alkyl Electrophiles2.1 Cobalt-Catalyzed Intramolecular Heck-Type Reaction2.2 Palladium-Catalyzed Intramolecular Heck-Type Reaction2.3 Nickel-Catalyzed Intramolecular Heck-Type Reaction2.4 Photocatalysis and Multimetallic Protocol for Intramolecular Heck-Type Reaction3 Intermolecular Heck-Type Reaction of Unactivated Alkenes and Alkyl Electrophiles3.1 Electrophilic Trifluoromethylating Reagent as Reaction Partners3.2 Alkyl Electrophiles as Reaction Partners4 Oxidative Heck-Type Reaction of Unactivated Alkenes and Alkyl Radicals5 Conclusions and Outlook
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Affiliation(s)
- Lili Shi
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School
| | - Junkai Fu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School
| | - Shuangqiu Gao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University
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27
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Lu MZ, Luo H, Hu Z, Shao C, Kan Y, Loh TP. Directed Palladium(II)-Catalyzed Intermolecular Anti-Markovnikov Hydroarylation of Unactivated Alkenes with (Hetero)arylsilanes. Org Lett 2020; 22:9022-9028. [PMID: 33151076 DOI: 10.1021/acs.orglett.0c03416] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We describe herein a regioselective palladium(II)-catalyzed intermolecular hydroarylation of unactivated aliphatic alkenes with electronically and sterically diverse (hetero)arylsilanes under redox-neutral conditions. A removable bidentate 8-aminoquinoline auxiliary was readily employed to dictate the regioselectivity, prevent β-hydride elimination, and facilitate protodepalladation. This silicon-based protocol features a broad substrate scope with excellent functional group compatibility and enables an expeditious route to a variety of γ-aryl butyric acid derivatives in good yields with exclusive anti-Markovnikov selectivity.
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Affiliation(s)
- Ming-Zhu Lu
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Haiqing Luo
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Zhengsong Hu
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Changdong Shao
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Yuhe Kan
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Teck-Peng Loh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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28
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Yang D, Huang H, Li MH, Si XJ, Zhang H, Niu JL, Song MP. Directed Cobalt-Catalyzed anti-Markovnikov Hydroalkylation of Unactivated Alkenes Enabled by “Co–H” Catalysis. Org Lett 2020; 22:4333-4338. [DOI: 10.1021/acs.orglett.0c01365] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Dandan Yang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Meng-Hui Li
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Xiao-Ju Si
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - He Zhang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Jun-Long Niu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Mao-Ping Song
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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