101
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Li SY, Zhang X, Teng F, Li Y, Li JH. Rh(iii)-Catalyzed [3 + 2]/[4 + 2] annulation of acetophenone oxime ethers with 3-acetoxy-1,4-enynes involving C–H activation. Org Chem Front 2021. [DOI: 10.1039/d1qo00090j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A novel, synthetically simple, selective rhodium(iii)-catalyzed [3 + 2]/[4 + 2] annulation cascade reaction to construct complex azafluorenone frameworks has been developed.
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Affiliation(s)
- Sun-Yong Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Xu Zhang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Fan Teng
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Yang Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
- State Key Laboratory of Chemo/Biosensing and Chemometrics
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102
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Lin J, Zheng TY, Fan NQ, Zhang P, Jiang K, Wei Y. Pyrrole synthesis through Cu-catalyzed cascade [3 + 2] spiroannulation/aromatization of oximes with azadienes. Org Chem Front 2021. [DOI: 10.1039/d1qo00443c] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We disclose an efficient synthetic protocol for the assembly of poly-substituted pyrroles through cascade [3 + 2] spiroannulation/aromatization of oximes with azadienes.
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Affiliation(s)
- Jing Lin
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
- China
| | - Ting-Yu Zheng
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
- China
| | - Neng-Quan Fan
- Chongqing Institute for Food and Drug Control
- Chongqing
- China
| | - Pu Zhang
- Chongqing Institute for Food and Drug Control
- Chongqing
- China
| | - Kun Jiang
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
- China
| | - Ye Wei
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing
- China
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103
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Duan J, Mao Y, Xian A, Rong B, Xu G, Li Z, Zhao L, Zhu N, Guo K. Copper-catalyzed regioselective [3+2] annulation of malonate-tethered acyl oximes with isatins. Chem Commun (Camb) 2021; 57:3379-3382. [DOI: 10.1039/d0cc07995b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A copper-catalyzed regioselective [3+2] annulation of malonate-tethered acyl oximes with isatins was developed, affording valuable 2,3-dihydrooxazole-spirooxindoles in moderate to good yields with excellent diastereoselectivity.
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Affiliation(s)
- Jindian Duan
- College of Biotechnology and Pharmaceutical Engineering
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Yiyang Mao
- College of Biotechnology and Pharmaceutical Engineering
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Anmei Xian
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Binsen Rong
- College of Biotechnology and Pharmaceutical Engineering
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Gaochen Xu
- College of Biotechnology and Pharmaceutical Engineering
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Zhenjiang Li
- College of Biotechnology and Pharmaceutical Engineering
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Lili Zhao
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Ning Zhu
- College of Biotechnology and Pharmaceutical Engineering
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering
- State Key Laboratory of Materials-Oriented Chemical Engineering
- Nanjing Tech University
- Nanjing
- China
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104
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Xu M, Xia Y. Mechanistic Understanding of Rh(III)-Catalyzed Redox-Neutral C—H Activation/Annulation Reactions of N-Phenoxyacetamides and Methyleneoxetanones. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202103054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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105
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Bian M, Mawjuda H, Gao H, Xu H, Zhou Z, Yi W. Lossen Rearrangement vs C-N Reductive Elimination Enabled by Rh(III)-Catalyzed C-H Activation/Selective Lactone Ring-Opening: Chemodivergent Synthesis of Quinolinones and Dihydroisoquinolinones. Org Lett 2020; 22:9677-9682. [PMID: 33274634 DOI: 10.1021/acs.orglett.0c03734] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An unprecedented Rh(III)-catalyzed cascade C-H activation/Lossen rearrangement of aromatic amides with methyleneoxetanones has been realized along with a tunable C-N bond reductive elimination/trans esterification, giving divergent access to quinolinones and dihydroisoquinolinones via selective ring-opening of the four-membered lactone unit. Combined computational and experimental mechanistic studies defined the solvent-involved distinguished reaction paths, the origin of the observed chemodivergence, as well as the role of the substituent attached at the oxidizing directing group in tuning the reaction outcomes.
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Affiliation(s)
- Mengyao Bian
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Hamdulla Mawjuda
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Hui Gao
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Huiying Xu
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Zhi Zhou
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
| | - Wei Yi
- The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, Guangdong 511436, China
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106
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Biswal P, Banjare SK, Pati BV, Mohanty SR, Ravikumar PC. Rhodium-Catalyzed One-Pot Access to N-Polycyclic Aromatic Hydrocarbons from Aryl Ketones through Triple C-H Bond Activations. J Org Chem 2020; 86:1108-1117. [PMID: 33332119 DOI: 10.1021/acs.joc.0c02582] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A Rh-catalyzed pot and step economic synthesis of aza-polycyclic aromatic hydrocarbons (N-PAHs) from readily available aryl ketones and alkynes has been disclosed. Additionally, a novel synthetic application of the well-known aminating reagent hydroxylamine-O-sulfonic acid (HOSA) has been explored as an in situ redox-neutral directing group for the formation of N-PAHs via isoquinoline. Multiple bond formation in a single operation through a cascade of triple C-H bond activations is the beauty of this protocol. The challenging annulations of two different alkynes in a regioselective fashion have been demonstrated effectively. Mechanistic studies reveal that 3,4-diphenyl-1-methylisoquinoline is an active intermediate for this one-pot transformation.
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Affiliation(s)
- Pragati Biswal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, Jatni, Khurda, 752050, Odisha India
| | - Shyam Kumar Banjare
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, Jatni, Khurda, 752050, Odisha India
| | - Bedadyuti Vedvyas Pati
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, Jatni, Khurda, 752050, Odisha India
| | - Smruti Ranjan Mohanty
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, Jatni, Khurda, 752050, Odisha India
| | - Ponneri Chandrababu Ravikumar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) Bhubaneswar, HBNI, Jatni, Khurda, 752050, Odisha India
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107
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Pham QT, Le PQ, Dang HV, Ha HQ, Nguyen HTD, Truong T, Le TM. Iodine-mediated formal [3 + 2] annulation for synthesis of furocoumarin from oxime esters. RSC Adv 2020; 10:44332-44338. [PMID: 35517165 PMCID: PMC9058646 DOI: 10.1039/d0ra07566c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 11/27/2020] [Indexed: 11/30/2022] Open
Abstract
A novel synthesis of furocoumarins was developed by a reaction between oxime esters and 4-hydroxycoumarins. The reaction was proposed to undergo radical mechanism mediated by iodine, a cheap and common laboratory reagent. Mechanistic studies showed the key for the successful transformation was the presence of α-iodoimine intermediate which facilitated the ring-closing step. The developed conditions produced good functional group tolerance with a wide range of high-profile furocoumarin product. The potential for this strategy to be applied in other syntheses of heterocyclic compounds is highly achievable. A novel synthesis of furocoumarins was developed by a reaction between oxime esters and 4-hydroxycoumarins.![]()
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Affiliation(s)
- Quyen T Pham
- School of Medicine, VNU-HCM Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Phong Q Le
- School of Biotechnology, International University, VNU-HCM Quarter 6, Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Ha V Dang
- School of Medicine, VNU-HCM Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Hiep Q Ha
- Department of Chemical Engineering, HCMC University of Technology, VNU-HCM 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
| | - Huong T D Nguyen
- Department of Chemistry, HCMC University of Science, VNU-HCM 227 Nguyen Van Cu Street, District 5 Ho Chi Minh City Vietnam
| | - Thanh Truong
- Department of Chemical Engineering, HCMC University of Technology, VNU-HCM 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
| | - Tri Minh Le
- School of Medicine, VNU-HCM Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
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108
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Ai C, Liao X, Zhou Y, Yan Z, Lin S. SO2F2-mediated deoxygenative C2-sulfonylation of quinoline N-oxides with sodium sulfinates. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152586] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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109
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Ouyang W, Rao J, Li Y, Liu X, Huo Y, Chen Q, Li X. Recent Achievements in the Rhodium‐Catalyzed Concise Construction of Medium N‐Heterocycles, Azepines and Azocines. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001040] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Wensen Ouyang
- School of Chemical Engineering and Light Industry Guangdong University of Technology No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center Guangzhou 510006 People's Republic of China
| | - Jianhang Rao
- School of Chemical Engineering and Light Industry Guangdong University of Technology No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center Guangzhou 510006 People's Republic of China
| | - Yibiao Li
- School of Biotechnology and Health Science Wuyi University Jiangmen 529020 People's Republic of China
| | - Xiaohang Liu
- BASF Advanced Chemicals Co., Ltd. No. 300, Jiangxinsha Road 200137 Shanghai People's Republic of China
| | - Yanping Huo
- School of Chemical Engineering and Light Industry Guangdong University of Technology No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center Guangzhou 510006 People's Republic of China
| | - Qian Chen
- School of Chemical Engineering and Light Industry Guangdong University of Technology No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center Guangzhou 510006 People's Republic of China
| | - Xianwei Li
- School of Chemical Engineering and Light Industry Guangdong University of Technology No. 100 Waihuan Xi Road Guangzhou Higher Education Mega Center Guangzhou 510006 People's Republic of China
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110
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Jiang B, Jia J, Sun Y, Wang Y, Zeng J, Bu X, Shi L, Sun X, Yang X. γ-Carboline synthesis enabled by Rh(iii)-catalysed regioselective C-H annulation. Chem Commun (Camb) 2020; 56:13389-13392. [PMID: 33034593 DOI: 10.1039/d0cc04740f] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A redox-neutral Rh(iii)-catalyzed C-H annulation of indolyl oximes was developed. Relying on the use of various alkynyl silanes as the terminal alkyne surrogates, the reaction exhibited a reverse regioselectivity, thus giving an exclusive and easy way for the synthesis of a wide range of substituent free γ-carbolines at C3 position with high efficiency. Deuterium-labelling experiments and kinetic analysis have preliminarily shed light on the working mode of this catalytic system.
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Affiliation(s)
- Bo Jiang
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, P. R. China.
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111
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Du F, Li S, Jiang K, Zeng R, Pan X, Lan Y, Chen Y, Wei Y. Iron‐Catalyzed Radical Relay Enabling the Modular Synthesis of Fused Pyridines from Alkyne‐Tethered Oximes and Alkenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010752] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fei Du
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Shi‐Jun Li
- College of Chemistry and Institute of Green Catalysis Zhengzhou University Zhengzhou Henan 450001 China
| | - Kun Jiang
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Rong Zeng
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Xi‐Chun Pan
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Yu Lan
- College of Chemistry and Institute of Green Catalysis Zhengzhou University Zhengzhou Henan 450001 China
- School of Chemistry and Chemical Engineering and Chongqing Key Laboratory of Theoretical and Computational Chemistry Chongqing University Chongqing 400030 China
| | - Ying‐Chun Chen
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Ye Wei
- College of Pharmacy Army Medical University Chongqing 400038 China
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112
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Du F, Li S, Jiang K, Zeng R, Pan X, Lan Y, Chen Y, Wei Y. Iron‐Catalyzed Radical Relay Enabling the Modular Synthesis of Fused Pyridines from Alkyne‐Tethered Oximes and Alkenes. Angew Chem Int Ed Engl 2020; 59:23755-23762. [DOI: 10.1002/anie.202010752] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Indexed: 12/26/2022]
Affiliation(s)
- Fei Du
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Shi‐Jun Li
- College of Chemistry and Institute of Green Catalysis Zhengzhou University Zhengzhou Henan 450001 China
| | - Kun Jiang
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Rong Zeng
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Xi‐Chun Pan
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Yu Lan
- College of Chemistry and Institute of Green Catalysis Zhengzhou University Zhengzhou Henan 450001 China
- School of Chemistry and Chemical Engineering and Chongqing Key Laboratory of Theoretical and Computational Chemistry Chongqing University Chongqing 400030 China
| | - Ying‐Chun Chen
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Ye Wei
- College of Pharmacy Army Medical University Chongqing 400038 China
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113
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Xue Y, Xue D, He Q, Ge Q, Li W, Shao L. Additive-Free Radical Cascade Reaction of Oxime Esters: Synthesis of Pyrroline-Functionalized Phenanthridines. J Org Chem 2020; 85:12284-12293. [PMID: 32916054 DOI: 10.1021/acs.joc.0c01532] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A variety of dihydropyrrole-functionalized phenanthridines were efficiently synthesized by the metal-free, radical cascade cyclization reaction of 2-isocyanobiphenyls with γ,δ-unsaturated oxime esters. The C-N/C-C/C-C bonds were formed via the oil bath method in a one-pot procedure with broad substrate applicability. The radical process was supported by kinetic isotope effect studies and radical inhibition studies.
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Affiliation(s)
- Yijie Xue
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai 201203, China
| | - Dengqi Xue
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai 201203, China.,State Key Laboratory of Medical Neurobiology, Fudan University, 138 Yixueyuan Road, Shanghai 200032, China
| | - Qian He
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai 201203, China
| | - Qianwei Ge
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai 201203, China
| | - Wei Li
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai 201203, China
| | - Liming Shao
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Zhangjiang Hi-tech Park, Pudong, Shanghai 201203, China.,State Key Laboratory of Medical Neurobiology, Fudan University, 138 Yixueyuan Road, Shanghai 200032, China
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114
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Yang Z, Yue Q, Yang M, Zhang H, Cui X. Ru(II)-Catalyzed Tunable Cascade Reaction via C–H/C–C Bond Cleavage. J Org Chem 2020; 85:12960-12970. [DOI: 10.1021/acs.joc.0c01614] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Zi Yang
- Department Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P. R. China
| | - Qi Yue
- Department Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P. R. China
| | - Mengqi Yang
- Department Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P. R. China
| | - Hong Zhang
- Department Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P. R. China
| | - Xiuling Cui
- Department Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Xiamen Marine and Gene Drugs, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, School of Biomedical Sciences, Huaqiao University, Xiamen 361021, P. R. China
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115
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Dey A, Volla CMR. Traceless Bidentate Directing Group Assisted Cobalt-Catalyzed sp2-C–H Activation and [4 + 2]-Annulation Reaction with 1,3-Diynes. Org Lett 2020; 22:7480-7485. [DOI: 10.1021/acs.orglett.0c02664] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Arnab Dey
- 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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116
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Wu C, Liu TX, Zhang P, Zhu X, Zhang G. Iron-Catalyzed Redox-Neutral Radical Cascade Reaction of [60]Fullerene with γ,δ-Unsaturated Oxime Esters: Preparation of Free (N-H) Pyrrolidino[2',3':1,2]fullerenes. Org Lett 2020; 22:7327-7332. [PMID: 32897079 DOI: 10.1021/acs.orglett.0c02658] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein an unprecedented iron(II)-catalyzed redox-neutral radical cascade reaction of [60]fullerene with γ,δ-unsaturated oxime esters is reported for the preparation of novel free (N-H) pyrrolidino[2',3':1,2]fullerenes. The transformation undergoes an intramolecular cyclization/intermolecular cyclization/oxidation/hydrolysis cascade, and features simple operation, broad substrate scope/high functional group compatibility as well as suitable for scale-up synthesis, providing a facile and practical access to a range of free pyrrolidino[2',3':1,2]fullerenes.
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Affiliation(s)
- Conghui Wu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Tong-Xin Liu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Pengling Zhang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xue Zhu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Guisheng Zhang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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117
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Wu J, Qian B, Liu Y, Shang Y. Ruthenium(II)‐Catalyzed C‐H Annulation of Aromatic Acids with Alkynes Using Air as the Sole Oxidant in Water. ChemistrySelect 2020. [DOI: 10.1002/slct.202003022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jiaping Wu
- Key Laboratory of Functional Molecular Solids (Ministry of Education) Anhui Key Laboratory of Molecular Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 China
| | - Baiyang Qian
- Key Laboratory of Functional Molecular Solids (Ministry of Education) Anhui Key Laboratory of Molecular Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 China
| | - Yanfei Liu
- Key Laboratory of Functional Molecular Solids (Ministry of Education) Anhui Key Laboratory of Molecular Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids (Ministry of Education) Anhui Key Laboratory of Molecular Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 China
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118
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Liang W, Jiang K, Du F, Yang J, Shuai L, Ouyang Q, Chen Y, Wei Y. Iron‐Catalyzed, Iminyl Radical‐Triggered Cascade 1,5‐Hydrogen Atom Transfer/(5+2) or (5+1) Annulation: Oxime as a Five‐Atom Assembling Unit. Angew Chem Int Ed Engl 2020; 59:19222-19228. [DOI: 10.1002/anie.202007825] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/04/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Wu Liang
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Kun Jiang
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Fei Du
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Jie Yang
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Li Shuai
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Qin Ouyang
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Ying‐Chun Chen
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Ye Wei
- College of Pharmacy Army Medical University Chongqing 400038 China
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119
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Liang W, Jiang K, Du F, Yang J, Shuai L, Ouyang Q, Chen Y, Wei Y. Iron‐Catalyzed, Iminyl Radical‐Triggered Cascade 1,5‐Hydrogen Atom Transfer/(5+2) or (5+1) Annulation: Oxime as a Five‐Atom Assembling Unit. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007825] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wu Liang
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Kun Jiang
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Fei Du
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Jie Yang
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Li Shuai
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Qin Ouyang
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Ying‐Chun Chen
- College of Pharmacy Army Medical University Chongqing 400038 China
| | - Ye Wei
- College of Pharmacy Army Medical University Chongqing 400038 China
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120
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Wan T, Pi C, Wu Y, Cui X. Rh(III)-Catalyzed [4 + 2] Annulation of 3-Aryl-5-isoxazolone with Maleimides or Maleic Ester. Org Lett 2020; 22:6484-6488. [DOI: 10.1021/acs.orglett.0c02283] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ting Wan
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Chao Pi
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yangjie Wu
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Xiuling Cui
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450052, P. R. China
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121
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Kanchupalli V, Shukla RK, Singh A, Volla CMR. Rh(III)-Catalyzed Redox-Neutral Cascade Annulation of Benzamides with p
-Quinone Methides. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000863] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Vinaykumar Kanchupalli
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Mumbai Powai India
| | - Rahul K. Shukla
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Mumbai Powai India
| | - Anurag Singh
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Mumbai Powai India
| | - Chandra M. R. Volla
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Mumbai Powai India
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122
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Meng H, Xu Z, Qu Z, Huang H, Deng GJ. Copper(0)/PPh3-Mediated Bisheteroannulations of o-Nitroalkynes with Methylketoximes Accessing Pyrazo-Fused Pseudoindoxyls. Org Lett 2020; 22:6117-6121. [DOI: 10.1021/acs.orglett.0c02180] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Huanxin Meng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Zhenhua Xu
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Zhonghua Qu
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
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123
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Baccalini A, Faita G, Zanoni G, Maiti D. Transition Metal Promoted Cascade Heterocycle Synthesis through C−H Functionalization. Chemistry 2020; 26:9749-9783. [DOI: 10.1002/chem.202001832] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/16/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Alessio Baccalini
- Department of Chemistry University of Pavia Viale Taramelli 10 Pavia 27100 Italy
| | - Giuseppe Faita
- Department of Chemistry University of Pavia Viale Taramelli 10 Pavia 27100 Italy
| | - Giuseppe Zanoni
- Department of Chemistry University of Pavia Viale Taramelli 10 Pavia 27100 Italy
| | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay Powai, Mumbai 400076 India
- Tokyo Tech World Research Hub Initiative (WRHI), Laboratory for Chemistry and Life Science Tokyo Institute of Technology Tokyo 152-8550 Japan
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124
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Liu S, Zhao F, Chen X, Deng G, Huang H. Aerobic Oxidative Functionalization of Indoles. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000285] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Saiwen Liu
- College of Materials and Chemical Engineering Hunan City University Yiyang 413000 Hunan People's Republic of China
| | - Feng Zhao
- Key Laboratory for Antibody-based Drug and Intelligent Delivery System of Hunan Province Key Laboratory of Dong Medicine of Hunan Province School of Pharmaceutical Sciences Hunan University of Medicine Huaihua 418000 People's Republic of China
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education College of Chemistry Xiangtan University Xiangtan 411105 People's Republic of China
| | - Xing Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education College of Chemistry Xiangtan University Xiangtan 411105 People's Republic of China
| | - Guo‐Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education College of Chemistry Xiangtan University Xiangtan 411105 People's Republic of China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education College of Chemistry Xiangtan University Xiangtan 411105 People's Republic of China
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125
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Copper-catalyzed sp3-carbon radical/carbamoyl radical cross coupling: A direct strategy for carbamoylation of 1,3-dicarbonyl compounds. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131342] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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126
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Chen J, Zhang L, Zheng X, Zhou J, Zhong T, Yu C. Synthesis of isoquinolinone derivatives by Rh (III)-catalyzed C–H functionalization of N-ethoxybenzamides. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1755984] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Junyu Chen
- College of pharmaceutical sciences, Zhejiang University of Technology, Hangzhou, Zhejiang, P. R. of China
| | - Lei Zhang
- College of pharmaceutical sciences, Zhejiang University of Technology, Hangzhou, Zhejiang, P. R. of China
| | - Xiangyun Zheng
- College of pharmaceutical sciences, Zhejiang University of Technology, Hangzhou, Zhejiang, P. R. of China
| | - Jian Zhou
- College of pharmaceutical sciences, Zhejiang University of Technology, Hangzhou, Zhejiang, P. R. of China
| | - Tianshuo Zhong
- College of pharmaceutical sciences, Zhejiang University of Technology, Hangzhou, Zhejiang, P. R. of China
| | - Chuanming Yu
- College of pharmaceutical sciences, Zhejiang University of Technology, Hangzhou, Zhejiang, P. R. of China
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127
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Murakami K, Nagamoto M, Nishimura T. Iridium-catalyzed Annulation of α,β-Unsaturated Amides with Electron-deficient Conjugated Dienes. CHEM LETT 2020. [DOI: 10.1246/cl.200193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kotone Murakami
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi, Osaka 558-8585, Japan
| | - Midori Nagamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Takahiro Nishimura
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi, Osaka 558-8585, Japan
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128
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Duan J, Zhang L, Xu G, Chen H, Ding X, Mao Y, Rong B, Zhu N, Guo K. NH4I-Triggered [4 + 2] Annulation of α,β-Unsaturated Ketoxime Acetates with N-Acetyl Enamides for the Synthesis of Pyridines. J Org Chem 2020; 85:8157-8165. [DOI: 10.1021/acs.joc.0c01081] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Jindian Duan
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Lei Zhang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Gaochen Xu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Heming Chen
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiaojuan Ding
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yiyang Mao
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Binsen Rong
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ning Zhu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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129
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Zhu Z, Lin H, Liang B, Huang J, Liang W, Chen L, Huang Y, Chen X, Li Y. Copper-catalyzed [2+3]-annulation of N-H imines with vinyl azides: access to polyaryl 2H-imidazoles. Chem Commun (Camb) 2020; 56:5621-5624. [PMID: 32297887 DOI: 10.1039/c9cc10042c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical method for the synthesis of 2H-imidazoles via a [2+3] annulation of N-H imines with vinyl azides using a copper catalyst is developed. In this conversion, environmentally friendly oxygen is used as the sole oxidant and N2 and H2O are the only by-products. The catalytic transformation, operating under mild conditions, is operationally simple and is considered as a readily available catalytic system having good substrate and functional compatibility with high atom-efficiency without the need for additional ligands or additives.
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Affiliation(s)
- Zhongzhi Zhu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
| | - Hanze Lin
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
| | - Baihui Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
| | - Junjie Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
| | - Wanyi Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
| | - Lu Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
| | - Yubing Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
| | - Xiuwen Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
| | - Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
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130
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Li X, Liang G, Shi Z. Regio‐Divergent
C—H Alkynylation with Janus Directing Strategy
via
Ir(
III
) Catalysis. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.202000204] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Xianwei Li
- School of Chemical Engineering and Light IndustryGuangdong University of Technology Guangzhou Guangdong 510006 China
- State Key Laboratory and Institute of Elemento‐Organic ChemistryNankai University Tianjin 300071 China
- College of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
| | - Guangxin Liang
- School of Physical Science and TechnologyShanghaiTech University Shanghai 201210 China
- State Key Laboratory and Institute of Elemento‐Organic ChemistryNankai University Tianjin 300071 China
| | - Zhang‐Jie Shi
- Department of ChemistryFudan University Shanghai 200433 China
- College of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry CAS Shanghai 200032 China
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131
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Li S, Lv H, Xie R, Yu Y, Ye X, Kong X. The C-H Activation/Bidirecting Group Strategy for Selective Direct Synthesis of Diverse 1,1'-Biisoquinolines. Org Lett 2020; 22:4207-4212. [PMID: 32428408 DOI: 10.1021/acs.orglett.0c01260] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Multidentate ligands are highly important but difficult to access. Herein we disclose an atom- and step-economic synthesis of highly substituted 1,1'-biisoquinolines by a C-H activation/bididirecting group strategy. Through rational design of a bididirecting group to "N-OH + N-OAc", selective unsymmetrical diannulation with two different alkynes in a one-pot reaction has been achieved for the first time to access unsymmetrical biisoquinolines. Moreover, the resultant biisoquinolines show tunable photoluminescence and serve as aggregation-induced emission (AIE) systems.
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Affiliation(s)
- Shiqing Li
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Hongxu Lv
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Rongrong Xie
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Yu Yu
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Xiuqing Ye
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Xiangfei Kong
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
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132
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Facile access to fluoroalkylated 2-aminopyridines by Cu-catalyzed [3 + 3] couplings of oxime esters with β-CF3 acrylonitrile. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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133
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Miao CB, Zheng AQ, Zhou LJ, Lyu X, Yang HT. Copper-Catalyzed Annulation of Oxime Acetates with α-Amino Acid Ester Derivatives: Synthesis of 3-Sulfonamido/Imino 4-Pyrrolin-2-ones. Org Lett 2020; 22:3381-3385. [DOI: 10.1021/acs.orglett.0c00870] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Chun-Bao Miao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - An-Qi Zheng
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Li-Jin Zhou
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Xinyu Lyu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
| | - Hai-Tao Yang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P. R. China
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134
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Yu XY, Chen J, Chen HW, Xiao WJ, Chen JR. Visible-Light-Driven Copper-Catalyzed C(sp3)–O Cross-Coupling of Benzylic Radicals with Phenols. Org Lett 2020; 22:2333-2338. [DOI: 10.1021/acs.orglett.0c00532] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiao-Ye Yu
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Jun Chen
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Hong-Wei Chen
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
| | - Wen-Jing Xiao
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Jia-Rong Chen
- CCNU-uOttawa Joint Research Centre, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
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135
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Kumar S, Nair AM, Volla CMR. Ru(II)-Catalyzed C–H Functionalization of N-Hydroxyoximes with 1,3-Diynes Unveils a Regioselective Disparity. Org Lett 2020; 22:2141-2146. [DOI: 10.1021/acs.orglett.0c00120] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Shreemoyee Kumar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Akshay M. Nair
- 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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136
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Li C, Xu HB, Zhang J, Liu M, Dong L. Synthesis of rhodium(iii)-catalyzed isoquinoline derivatives from allyl carbonates and benzimidates with hydrogen evolution. Org Biomol Chem 2020; 18:1412-1416. [PMID: 32016247 DOI: 10.1039/c9ob02553g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A novel Rh(iii)-catalyzed cascade C-H activation/cyclization approach to access isoquinoline derivatives from benzimidates and available allyl carbonates with the liberation of H2 has been realized. Allyl carbonates were first used as a versatile and universal C2 synthon to synthesize this biological activity skeleton via an efficient and practical process just within 1 h.
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Affiliation(s)
- Chao Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Hui-Bei Xu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Jing Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Man Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Lin Dong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
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137
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Xu M, Wang C, Jiang W, Xiao B. Synthesis and Application of Heterocyclic Germatranes via Rhodium‐Catalyzed Directed C−H Activation/Annulation with Alkynyl Germatranes and Palladium‐Catalyzed Cross‐Coupling. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901633] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Meng‐Yu Xu
- Department of ChemistryUniversity of Science and Technology of China Hefei 230026 People's Republic of China
| | - Chao Wang
- Department of ChemistryUniversity of Science and Technology of China Hefei 230026 People's Republic of China
| | - Wei‐Tao Jiang
- Department of ChemistryUniversity of Science and Technology of China Hefei 230026 People's Republic of China
| | - Bin Xiao
- Department of ChemistryUniversity of Science and Technology of China Hefei 230026 People's Republic of China
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138
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Chen SQ, Li XR, Li CJ, Fan J, Liu ZW, Shi XY. Aldehyde as a Traceless Directing Group for Regioselective C–H Alkylation Catalyzed by Rhodium(III) in Air. Org Lett 2020; 22:1259-1264. [DOI: 10.1021/acs.orglett.9b04433] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Si-Qi Chen
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory for Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Xin-Ran Li
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory for Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Chao-Jun Li
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
| | - Juan Fan
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory for Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Zhong-Wen Liu
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory for Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Xian-Ying Shi
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory for Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
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139
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Li X, Ouyang W, Nie J, Ji S, Chen Q, Huo Y. Recent Development on Cp*Ir(III)‐Catalyzed C−H Bond Functionalization. ChemCatChem 2020. [DOI: 10.1002/cctc.201902150] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Xianwei Li
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Wensen Ouyang
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Jianhong Nie
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Shaomin Ji
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Qian Chen
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
| | - Yanping Huo
- School of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 P. R. China
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140
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Zhang L, Duan J, Xu G, Ding X, Mao Y, Rong B, Zhu N, Fang Z, Li Z, Guo K. Copper-Catalyzed N–O Cleavage of α,β-Unsaturated Ketoxime Acetates toward Structurally Diverse Pyridines. J Org Chem 2020; 85:2532-2542. [DOI: 10.1021/acs.joc.9b03238] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Lei Zhang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jindian Duan
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Gaochen Xu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiaojuan Ding
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yiyang Mao
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Binsen Rong
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ning Zhu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zhenjiang Li
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
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141
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Pham PH, Nguyen KX, Pham HTB, Tran TT, Nguyen TT, Phan NTS. Functionalization of C–H bonds in acetophenone oximes with arylacetic acids and elemental sulfur. RSC Adv 2020; 10:11024-11032. [PMID: 35495317 PMCID: PMC9050572 DOI: 10.1039/d0ra00808g] [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: 01/27/2020] [Accepted: 03/07/2020] [Indexed: 11/28/2022] Open
Abstract
Fused thieno[3,2-d]thiazoles were synthesized via a coupling of acetophenone ketoximes, arylacetic acids, and elemental sulfur in the presence of Li2CO3 base. Functionalities including chloro, bromo, fluoro, trifluoromethyl, and pyridyl groups were compatible with reaction conditions. High yields and excellent regioselectivities were obtained even if meta-substituted ketoxime acetates were used. Ethyl esters of heteroarylacetic acids were competent substrates, which is very rare in the literature. Our method would offer a convenient protocol to afford polyheterocyclic structures from simple substrates. Annulation of acetophenone oxime acetates, arylacetic acids or esters, and elemental sulfur in absence of transition metals is reported.![]()
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Affiliation(s)
- Phuc H. Pham
- Faculty of Chemical Engineering
- Ho Chi Minh City University of Technology (HCMUT)
- Ho Chi Minh City
- Vietnam
- Vietnam National University
| | - Khang X. Nguyen
- Faculty of Chemical Engineering
- Ho Chi Minh City University of Technology (HCMUT)
- Ho Chi Minh City
- Vietnam
- Vietnam National University
| | - Hoai T. B. Pham
- Faculty of Chemical Engineering
- Ho Chi Minh City University of Technology (HCMUT)
- Ho Chi Minh City
- Vietnam
- Department of Chemistry
| | - Thien T. Tran
- Faculty of Chemical Engineering
- Ho Chi Minh City University of Technology (HCMUT)
- Ho Chi Minh City
- Vietnam
- Vietnam National University
| | - Tung T. Nguyen
- Faculty of Chemical Engineering
- Ho Chi Minh City University of Technology (HCMUT)
- Ho Chi Minh City
- Vietnam
- Vietnam National University
| | - Nam T. S. Phan
- Faculty of Chemical Engineering
- Ho Chi Minh City University of Technology (HCMUT)
- Ho Chi Minh City
- Vietnam
- Vietnam National University
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142
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Cui XF, Huang GS. Rhodium-catalyzed tandem acylmethylation/annulation of N-nitrosoanilines with sulfoxonium ylides for the synthesis of substituted indazole N-oxides. Org Biomol Chem 2020; 18:4014-4018. [DOI: 10.1039/d0ob00723d] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An atom-economical protocol for synthesizing indazole N-oxides from readily available N-nitrosoanilines and sulfoxonium ylides through the rhodium(iii)-catalyzed C–H activation and cyclization reaction is described here.
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Affiliation(s)
- Xin-Feng Cui
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou 730000
| | - Guo-Sheng Huang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou 730000
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143
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Upare A, Chouhan NK, Ramaraju A, Sridhar B, Bathula SR. Access to pyrrolo[2,1-a]isoindolediones from oxime acetates and ninhydrin via Cu(i)-mediated domino annulations. Org Biomol Chem 2020; 18:1743-1746. [DOI: 10.1039/d0ob00058b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper-mediated domino condensation reaction of easily accessible oxime acetates with ninhydrin to give pyrrolo[2,1-a]isoindolediones is reported.
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Affiliation(s)
- Atul Upare
- Department of Organic Synthesis and Process Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
- AcSIR (Academy of Scientific & Innovative Research)
| | - Neeraj Kumar Chouhan
- Department of Organic Synthesis and Process Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
- AcSIR (Academy of Scientific & Innovative Research)
| | - Andhavaram Ramaraju
- Department of Organic Synthesis and Process Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
| | - Balasubramanian Sridhar
- X-ray Crystallography Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
| | - Surendar Reddy Bathula
- Department of Organic Synthesis and Process Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500007
- India
- AcSIR (Academy of Scientific & Innovative Research)
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144
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Jiang J, Tuo X, Fu Z, Huang H, Deng GJ. Three-component synthesis of 1,4-benzothiazines via iodide-catalyzed aerobic C–H sulfuration with elemental sulfur. Org Biomol Chem 2020; 18:3234-3238. [DOI: 10.1039/d0ob00074d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Five to Six: Beyond the well-established thiazole formation from elemental sulfur, this method provides the first access to the corresponding six-membered N,S-heterocyclic products via direct functionalization of multiple C–H bonds.
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Affiliation(s)
- Jingjing Jiang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
| | - Xiaolong Tuo
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
| | - Zhuquan Fu
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education
- College of Chemistry
- Xiangtan University
- Xiangtan 411105
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145
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Yu Y, Lv H, Li S. The C-H functionalization of organic cations: an interesting and fresh journey. Org Biomol Chem 2020; 18:8810-8826. [PMID: 33112319 DOI: 10.1039/d0ob01453b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organic ionic compounds, especially those with organic cations, are commonly applied in ionic liquids (ILs), organocatalysts, (a)NHC ligands, ion recognition, and optoelectronic materials. The direct C-H functionalization of organic cations offers valuable opportunities for the rapid assembly of diverse functionalized cations and for their further exploitation in material science applications. This review summarizes the substantial progress that has been made in the C-H functionalization of organic cations from the 1960s to May 2020, including transition metal-mediated/catalyzed C-H alkylation, arylation, and annulation, and photo-induced C-H functionalization. Substrate scopes, limitations, regio-/chemoselectivity, and reaction mechanisms are discussed. In addition, the applications of some new organic functional materials are briefly exemplified. This review also aims to serve as a reminder that much care should be taken when using organic ionic compounds as solvents, because they can behave as reactants that can break up desired coupling reactions.
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Affiliation(s)
- Yu Yu
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
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146
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Kwak SH, Daugulis O. N-Iminopyridinium ylide-directed, cobalt-catalysed coupling of sp 2 C-H bonds with alkynes. Chem Commun (Camb) 2020; 56:11070-11073. [PMID: 32812560 DOI: 10.1039/d0cc05294a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
N-Iminopyridinium ylides are competent monodentate directing groups for cobalt-catalysed annulation of sp2 C-H bonds with internal alkynes. The pyridine moiety in the ylide serves as an internal oxidant and is cleaved during the reaction. The annulation reactions possess excellent compatibility with heterocyclic substrates, tolerating furan, thiophene, pyridine, pyrrole, pyrazole, and indole functionalities.
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Affiliation(s)
- Se Hun Kwak
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, USA.
| | - Olafs Daugulis
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, USA.
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147
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Ding Q, Li M, Sun Y, Yu Y, Baell JB, Huang F. Copper-catalyzed [4 + 2] annulation reaction of β-enaminones and aryl diazonium salts without external oxidant: synthesis of highly functionalized 3H-1,2,4-triazines via homogeneous or heterogeneous strategy. Org Chem Front 2020. [DOI: 10.1039/c9qo01413f] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Herein, both homogeneous and heterogeneous strategies were developed to access highly functionalized 3H-1,2,4-triazines using Cu-catalyzed [4 + 2] annulation.
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Affiliation(s)
- Qifeng Ding
- School of Food Science and Pharmaceutical Engineering
- Nanjing Normal University
- Nanjing 210023
- China
- School of Pharmaceutical Sciences
| | - Mingrui Li
- School of Pharmaceutical Sciences
- Nanjing Tech University
- Nanjing 211816
- China
| | - Yiming Sun
- School of Pharmaceutical Sciences
- Nanjing Tech University
- Nanjing 211816
- China
| | - Yang Yu
- School of Environmental Science and Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Jonathan B. Baell
- School of Pharmaceutical Sciences
- Nanjing Tech University
- Nanjing 211816
- China
- Medicinal Chemistry Theme
| | - Fei Huang
- School of Food Science and Pharmaceutical Engineering
- Nanjing Normal University
- Nanjing 210023
- China
- School of Pharmaceutical Sciences
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148
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Zhang Y, Wu XF. Iron-catalyzed carbonylative cyclization of γ,δ-unsaturated aromatic oxime esters with amines. Chem Commun (Camb) 2020; 56:14605-14608. [DOI: 10.1039/d0cc06671k] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An efficient iron-catalyzed carbonylative cyclization of γ,δ-unsaturated aromatic oxime esters with amines has been developed.
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Affiliation(s)
- Youcan Zhang
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock
- Albert-Einstein-Straße 29a
- Rostock 18059
- Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock
- Albert-Einstein-Straße 29a
- Rostock 18059
- Germany
- Dalian National Laboratory for Clean Energy
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149
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Chen C, Zhao J, Shi X, Liu L, Zhu YP, Sun W, Zhu B. Recent advances in cyclization reactions of unsaturated oxime esters (ethers): synthesis of versatile functionalized nitrogen-containing scaffolds. Org Chem Front 2020. [DOI: 10.1039/d0qo00397b] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We summarized recent advances in cyclization reactions of unsaturated oxime esters (ethers), which provide diversiform functionalized nitrogen-containing scaffolds.
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Affiliation(s)
- Chen Chen
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Jinghui Zhao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Xiaonan Shi
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Liying Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Yan-Ping Zhu
- School of Pharmacy
- Key Laboratory of Molecular Pharmacology and Drug Evaluation
- Ministry of Education
- Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong
- Yantai University
| | - Wan Sun
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
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150
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Mihara G, Noguchi T, Nishii Y, Hayashi Y, Kawauchi S, Miura M. Rhodium-Catalyzed Annulative Coupling of Isothiazoles with Alkynes through N-S Bond Cleavage. Org Lett 2019; 22:661-665. [PMID: 31886679 DOI: 10.1021/acs.orglett.9b04437] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A Rh(III)-catalyzed annulative coupling of 3,5-diarylisothiazoles and alkynes is reported. The N-S bond in the isothiazole ring acts as an internal oxidant to regenerate the Rh(III) species in combination with an external Cu(II) oxidant, and the corresponding 1:2 coupling products are obtained. The remarkable difference in the reaction outcome between isothiazoles and the relevant isoxazoles has been investigated by DFT calculations, revealing that the relative stability of the enolate intermediates dictates the product selectivity.
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Affiliation(s)
| | | | | | - Yoshihiro Hayashi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology , Tokyo Institute of Technology , Ookayama, Meguro-ku, Tokyo 152-8552 , Japan
| | - Susumu Kawauchi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology , Tokyo Institute of Technology , Ookayama, Meguro-ku, Tokyo 152-8552 , Japan
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