1
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Rajamanickam KR, Lee S. Ring Opening of N-Acyl Lactams Using Nickel-Catalyzed Transamidation. J Org Chem 2024. [PMID: 38173413 DOI: 10.1021/acs.joc.3c02486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
We successfully developed a nickel-catalyzed transamidation method for the ring opening of N-acyl lactams. The method involves a reaction between N-benzoylpyrrolidin-2-one derivatives and aniline derivatives, with Ni(PPh3)2Cl2 serving as the catalyst, 2,2'-bipyridine as the ligand, and manganese as the reducing agent. This reaction led to the formation of ring-opening-amidated products in good yields. Notably, the method exhibited excellent efficiency for producing the corresponding ring-opening transamidation products for various ring sizes, including four-, five-, six-, seven-, and eight-membered ring lactams.
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Affiliation(s)
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
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2
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Kang JY, Huang H. Triflic Anhydride (Tf2O)-Activated Transformations of Amides, Sulfoxides and Phosphorus Oxides via Nucleophilic Trapping. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1679-8205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AbstractTrifluoromethanesulfonic anhydride (Tf2O) is utilized as a strong electrophilic activator in a wide range of applications in synthetic organic chemistry, leading to the transient generation of a triflate intermediate. This versatile triflate intermediate undergoes nucleophilic trapping with diverse nucleophiles to yield novel compounds. In this review, we describe the features and applications of triflic anhydride in organic synthesis reported in the past decade, especially in amide, sulfoxide, and phosphorus oxide chemistry through electrophilic activation. A plausible mechanistic pathway for each important reaction is also discussed.1 Introduction2 Amide Chemistry2.1 Carbon Nucleophiles2.2 Hydrogen Nucleophiles2.3 Nitrogen Nucleophiles2.4 Oxygen and Sulfur Nucleophiles2.5 hosphorus Nucleophiles2.6 A Vilsmeier-Type Reagent2.7 Umpolung Reactivity in Amides3 Sulfoxide Chemistry3.1 Oxygen Nucleophiles3.2 Carbon Nucleophiles3.3 Nitrogen Nucleophiles3.4 Thionium Reagents4 Phosphorus Chemistry4.1 Hendrickson’s Reagent4.2 Diaryl Phosphine Oxides4.3 Phosphonates, Phosphates and Phosphinates5 Conclusion and Outlook
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Affiliation(s)
- Jun Yong Kang
- Department of Chemistry and Biochemistry, University of Nevada Las Vegas
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University
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3
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Park MS, Lee S. Transition-metal-catalyst-free reaction of amides and acetonitriles: synthesis of β-ketonitriles. Org Chem Front 2022. [DOI: 10.1039/d2qo00884j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The first example of the coupling reaction between amide and acetonitrile for the synthesis of β-ketonitriles was developed. Various amides provide the corresponding β-ketonitriles in good yields.
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Affiliation(s)
- Myeong Seong Park
- Department of Chemistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju, 61186, Republic of Korea
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4
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Zheng Y, Martinez‐Acosta JA, Khimji M, Barbosa LCA, Clarkson GJ, Wills M. Asymmetric Transfer Hydrogenation of Aryl Heteroaryl Ketones using Noyori‐Ikariya Catalysts. ChemCatChem 2021. [DOI: 10.1002/cctc.202101027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Ye Zheng
- Department of Chemistry The University of Warwick Coventry CV4 7AL UK
| | - Jaime A. Martinez‐Acosta
- Universidade Federal de Minas Gerais Dept Chem-ICEx Av Presidente Antonio Carlos 6627 Campus Pampulha BR-31270901 Belo Horizonte MG Brazil
| | - Mohammed Khimji
- Department of Chemistry The University of Warwick Coventry CV4 7AL UK
| | - Luiz C. A. Barbosa
- Universidade Federal de Minas Gerais Dept Chem-ICEx Av Presidente Antonio Carlos 6627 Campus Pampulha BR-31270901 Belo Horizonte MG Brazil
| | - Guy J. Clarkson
- Department of Chemistry The University of Warwick Coventry CV4 7AL UK
| | - Martin Wills
- Department of Chemistry The University of Warwick Coventry CV4 7AL UK
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5
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Bao CC, Du HZ, Luo YL, Guan BT. Direct alkylation of N,N-dialkyl benzamides with methyl sulfides under transition metal-free conditions. Commun Chem 2021; 4:138. [PMID: 36697564 PMCID: PMC9814863 DOI: 10.1038/s42004-021-00575-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 08/19/2021] [Indexed: 01/28/2023] Open
Abstract
Amides are a fundamental and widespread functional group, and are usually considered as poor electrophiles owing to resonance stabilization of the amide bond. Various approaches have been developed to address challenges in amide transformations. Nonetheless, most methods use activated amides, organometallic reagents or transition metal catalysts. Here, we report the direct alkylation of N,N-dialkyl benzamides with methyl sulfides promoted by the readily available base LDA (lithium diisopropylamide). This approach successfully achieves an efficient and selective synthesis of α-sulfenylated ketones without using transition-metal catalysts or organometallic reagents. Preliminary mechanism studies reveal that the deprotonative aroylation of methyl sulfides is promoted by the directed ortho-lithiation of the tertiary benzamide with LDA.
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Affiliation(s)
- Can-Can Bao
- grid.216938.70000 0000 9878 7032College of Chemistry, Nankai University, Tianjin, China
| | - Hui-Zhen Du
- grid.216938.70000 0000 9878 7032College of Chemistry, Nankai University, Tianjin, China
| | - Yan-Long Luo
- grid.216938.70000 0000 9878 7032College of Chemistry, Nankai University, Tianjin, China
| | - Bing-Tao Guan
- grid.8547.e0000 0001 0125 2443Department of Chemistry, Fudan University, Shanghai, China
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6
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Deng XZ, Chen ZY, Song Y, Xue F, Yamane M, Yue YN. Direct Access to α,β-Unsaturated Ketones via Rh/MgCl 2-Mediated Acylation of Vinylsilanes. J Org Chem 2021; 86:12693-12704. [PMID: 34491765 DOI: 10.1021/acs.joc.1c01205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report herein the facile and practical construction of α,β-unsaturated ketones via rhodium-catalyzed direct acylation of vinylsilanes with readily available and abundant carboxylic acids. This protocol features access to a diverse array of synthetically useful functionalities with moderate to excellent yields. More importantly, the late-stage functionalization of pharmaceuticals was also realized with synthetically useful yield.
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Affiliation(s)
- Xue-Zu Deng
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing211816, China
| | - Zi-Yan Chen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing211816, China
| | - Yang Song
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing211816, China
| | - Fei Xue
- Institute of Material Physics & Chemistry, College of Science, Nanjing Forestry University, Nanjing210037, China
| | - Motoki Yamane
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore637371, Singapore
| | - Yan-Ni Yue
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing211816, China
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7
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Li M, Yuan Y, Chen Y. Bischler‐Napieralski
Cyclization: A Versatile Reaction towards Functional
Aza‐PAHs
and Their Conjugated Polymers
†. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100419] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Mengwei Li
- Institute of Molecular Plus, Department of Chemistry Tianjin University Tianjin 300354 China
| | - Yuan Yuan
- Institute of Molecular Plus, Department of Chemistry Tianjin University Tianjin 300354 China
| | - Yulan Chen
- Institute of Molecular Plus, Department of Chemistry Tianjin University Tianjin 300354 China
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8
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Bao CC, Luo YL, Du HZ, Guan BT. Benzylic aroylation of toluenes with unactivated tertiary benzamides promoted by directed ortho-lithiation. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1035-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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9
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Liang F, Eda K, Okazoe T, Wada A, Mori N, Konishi K, Tsuda A. Photo-on-Demand Synthesis of Vilsmeier Reagents with Chloroform and Their Applications to One-Pot Organic Syntheses. J Org Chem 2021; 86:6504-6517. [PMID: 33844541 DOI: 10.1021/acs.joc.1c00334] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Vilsmeier reagent (VR), first reported a century ago, is a versatile reagent in a variety of organic reactions. It is used extensively in formylation reactions. However, the synthesis of VR generally requires highly toxic and corrosive reagents such as POCl3, SOCl2, or COCl2. In this study, we found that VR is readily obtained from a CHCl3 solution containing N,N-dimethylformamide or N,N-dimethylacetamide upon photo-irradiation under O2 bubbling. The corresponding Vilsmeier reagents were obtained in high yields with the generation of gaseous HCl and CO2 as byproducts to allow their isolations as crystalline solid products amenable to analysis by X-ray crystallography. With the advantage of using CHCl3, which bifunctionally serves as a reactant and a solvent, this photo-on-demand VR synthesis is available for one-pot syntheses of aldehydes, acid chlorides, formates, ketones, esters, and amides.
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Affiliation(s)
- Fengying Liang
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Kazuo Eda
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Takashi Okazoe
- Materials Integration Laboratories, AGC Inc., Suehiro 1-1 Tsurumi-ku, Yokohama City, Kanagawa 230-0045, Japan
| | - Akihiro Wada
- AGC Inc., Shin-Marunouchi Bldg., 1-5-1 Marunouchi, Chiyoda-ku, Tokyo 100-8405, Japan
| | - Nobuaki Mori
- AGC Inc., Shin-Marunouchi Bldg., 1-5-1 Marunouchi, Chiyoda-ku, Tokyo 100-8405, Japan
| | - Katsuhiko Konishi
- AGC Inc., Shin-Marunouchi Bldg., 1-5-1 Marunouchi, Chiyoda-ku, Tokyo 100-8405, Japan
| | - Akihiko Tsuda
- Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
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10
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Asymmetric transfer hydrogenation of unsaturated ketones; factors influencing 1,4- vs 1,2- regio- and enantioselectivity, and alkene vs alkyne directing effects. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131771] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Jian J, He Z, Zhang Y, Liu T, Liu L, Wang Z, Wang H, Wang S, Zeng Z. Palladium‐Catalyzed Suzuki Coupling of
N
‐Acyloxazolidinones via Selective Cleavage of C–N Bonds. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000575] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Junsheng Jian
- College of Chemistry South China Normal University 510006 Guangzhou Guangdong P. R. China
| | - Zhanyu He
- College of Chemistry South China Normal University 510006 Guangzhou Guangdong P. R. China
| | - Yuqi Zhang
- College of Chemistry South China Normal University 510006 Guangzhou Guangdong P. R. China
| | - Tingting Liu
- College of Chemistry South China Normal University 510006 Guangzhou Guangdong P. R. China
| | - Lizhen Liu
- College of Chemistry South China Normal University 510006 Guangzhou Guangdong P. R. China
| | - Zijia Wang
- College of Chemistry South China Normal University 510006 Guangzhou Guangdong P. R. China
| | - Hui Wang
- College of Chemistry South China Normal University 510006 Guangzhou Guangdong P. R. China
| | - Sanyong Wang
- Guangye L&P Food Ingredient Co., Ltd. 510308 Guangzhou Guangdong P. R. China
| | - Zhuo Zeng
- College of Chemistry South China Normal University 510006 Guangzhou Guangdong P. R. China
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12
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Zhang Y, Wang Z, Tang Z, Luo Z, Wu H, Liu T, Zhu Y, Zeng Z. Water Phase, Room Temperature, Ligand-Free Suzuki-Miyaura Cross-Coupling: A Green Gateway to Aryl Ketones by C-N Bond Cleavage. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901730] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yuqi Zhang
- College of Chemistry; South China Normal University; 510006 Guangzhou Guangdong P. R. China
| | - Zijia Wang
- College of Chemistry; South China Normal University; 510006 Guangzhou Guangdong P. R. China
| | - Zhao Tang
- Class Zheng, International Department; The Affiliated High School of SCNU; 516006 Guangzhou China
| | - Zhongfeng Luo
- College of Chemistry; South China Normal University; 510006 Guangzhou Guangdong P. R. China
| | - Hongxiang Wu
- College of Chemistry; South China Normal University; 510006 Guangzhou Guangdong P. R. China
| | - Tingting Liu
- College of Chemistry; South China Normal University; 510006 Guangzhou Guangdong P. R. China
| | - Yulin Zhu
- College of Chemistry; South China Normal University; 510006 Guangzhou Guangdong P. R. China
| | - Zhuo Zeng
- College of Chemistry; South China Normal University; 510006 Guangzhou Guangdong P. R. China
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Science; 345 LingLing Road 200032 Shanghai China
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13
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Xiong L, Deng R, Liu T, Luo Z, Wang Z, Zhu X, Wang H, Zeng Z. Selective C−N Bond Cleavage of
N
‐Acylisatins: Towards High Performance Acylation/Arylation/Transamination Reagents. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900819] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Li Xiong
- College of Chemistry and EnvironmentSouth China Normal University Guangzhou 510006 People's Republic of China
| | - Rong Deng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapySun Yat-sen University Cancer Center Guangzhou 510060 People's Republic of China
| | - Tingting Liu
- College of Chemistry and EnvironmentSouth China Normal University Guangzhou 510006 People's Republic of China
| | - Zhongfeng Luo
- College of Chemistry and EnvironmentSouth China Normal University Guangzhou 510006 People's Republic of China
| | - Zijia Wang
- College of Chemistry and EnvironmentSouth China Normal University Guangzhou 510006 People's Republic of China
| | - Xiao‐Feng Zhu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapySun Yat-sen University Cancer Center Guangzhou 510060 People's Republic of China
| | - Hui Wang
- College of Chemistry and EnvironmentSouth China Normal University Guangzhou 510006 People's Republic of China
| | - Zhuo Zeng
- College of Chemistry and EnvironmentSouth China Normal University Guangzhou 510006 People's Republic of China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai People's Republic of China 200032
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14
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Niu Z, Li L, Liu X, Liang Y. Transition‐Metal‐Free Alkylation/Arylation of Benzoxazole via Tf
2
O‐Activated‐Amide. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901078] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Zhi‐Jie Niu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Lian‐Hua Li
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Xue‐Yuan Liu
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
| | - Yong‐Min Liang
- State Key Laboratory of Applied Organic Chemistry, School of Chemistry and Chemical EngineeringLanzhou University Lanzhou 730000 People's Republic of China
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15
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Huang J, Hu G, An S, Chen D, Li M, Li P. Synthesis of N-Alkylpyridin-4-ones and Thiazolo[3,2- a]pyridin-5-ones through Pummerer-Type Reactions. J Org Chem 2019; 84:9758-9769. [PMID: 31290663 DOI: 10.1021/acs.joc.9b01672] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
N-Alkylated 4-pyridones were obtained through a one-pot procedure involving either normal or interrupted Pummerer reactions between triflic anhydride-activated sulfoxides and 4-fluoropyridine derivatives, followed by hydrolysis. On the other hand, triflic anhydride-activated benzyl 6-fluoro-2-pyridyl sulfoxide could react with alkenes or alkynes to afford thiazolo[3,2-a]pyridin-5-ones, via the pyridinium salt intermediates.
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Affiliation(s)
- Jingjia Huang
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Gang Hu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China.,Department of Chemistry , Baotou Teacher's College , Baotou 014030 , China
| | - Shaoyu An
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Dongding Chen
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Minglei Li
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China
| | - Pingfan Li
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science , Beijing University of Chemical Technology , Beijing 100029 , China
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16
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Luo Z, Wu H, Li Y, Chen Y, Nie J, Lu S, Zhu Y, Zeng Z. Cesium Fluoride and Copper‐Catalyzed One‐Pot Synthesis of Benzoxazoles
via
a Site‐Selective Amide C−N Bond Cleavage. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900485] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Zhongfeng Luo
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Hongxiang Wu
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Yue Li
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Yuwen Chen
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Jingyi Nie
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Siqi Lu
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Yulin Zhu
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
| | - Zhuo Zeng
- College of Chemistry and Environment South China Normal University Guangzhou 510006 People's Republic of China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry Chinese Academy of Science 345 Lingling Road Shanghai 200032 People's Republic of China
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17
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Li J, Bauer A, Di Mauro G, Maulide N. α-Arylation of Carbonyl Compounds through Oxidative C-C Bond Activation. Angew Chem Int Ed Engl 2019; 58:9816-9819. [PMID: 31112360 PMCID: PMC6771532 DOI: 10.1002/anie.201904899] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Indexed: 01/05/2023]
Abstract
A synthetically useful approach for the direct α-arylation of carbonyl compounds through a novel oxidative C-C bond activation is reported. This mechanistically unusual process relies on a 1,2-aryl shift and results in all-carbon quaternary centers. The transformation displays broad functional-group tolerance and can in principle also be applied as an asymmetric variant.
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Affiliation(s)
- Jing Li
- University of ViennaInstitute of Organic ChemistryWähringer Strasse 381090ViennaAustria
| | - Adriano Bauer
- University of ViennaInstitute of Organic ChemistryWähringer Strasse 381090ViennaAustria
| | - Giovanni Di Mauro
- University of ViennaInstitute of Organic ChemistryWähringer Strasse 381090ViennaAustria
| | - Nuno Maulide
- University of ViennaInstitute of Organic ChemistryWähringer Strasse 381090ViennaAustria
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18
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19
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Geng H, Huang P. Ketone Synthesis by Direct, Orthogonal Chemoselective Hydroacylation of Alkenes with Amides: Use of Alkenes as Surrogates of Alkyl Carbanions. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900252] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Hui Geng
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical BiologyCollege of Chemistry and Chemical Engineering, Xiamen University Xiamen Fujian 361005 China
| | - Pei‐Qiang Huang
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical BiologyCollege of Chemistry and Chemical Engineering, Xiamen University Xiamen Fujian 361005 China
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20
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Li J, Bauer A, Di Mauro G, Maulide N. α‐Arylierung von Carbonylverbindungen mittels oxidativer C‐C‐Bindungsaktivierung. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904899] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jing Li
- Universität WienInstitut für organische Chemie Währinger Strasse 38 1090 Wien Österreich
| | - Adriano Bauer
- Universität WienInstitut für organische Chemie Währinger Strasse 38 1090 Wien Österreich
| | - Giovanni Di Mauro
- Universität WienInstitut für organische Chemie Währinger Strasse 38 1090 Wien Österreich
| | - Nuno Maulide
- Universität WienInstitut für organische Chemie Währinger Strasse 38 1090 Wien Österreich
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21
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Hu G, Xu J, Li P. Synthesis of N-alkylated 2-pyridones through Pummerer type reactions of activated sulfoxides and 2-fluoropyridine derivatives. Org Biomol Chem 2019; 16:4151-4158. [PMID: 29785444 DOI: 10.1039/c8ob00860d] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
N-Alkylated 2-pyridone products were obtained in good to excellent yields through a one-pot procedure involving either normal or interrupted Pummerer reactions between triflic anhydride activated sulfoxides and 2-fluoropyridine derivatives, followed by hydrolysis. This is a rare case that uses 2-fluoropyridine as a nucleophile in Pummerer type reactions.
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Affiliation(s)
- Gang Hu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
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22
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Liu YP, Wang SR, Chen TT, Yu CC, Wang AE, Huang PQ. Enamines as Surrogates of Alkyl Carbanions for the Direct Conversion of Secondary Amides to α-Branched Ketones. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801443] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yong-Peng Liu
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005, Fujian People's Republic of China
| | - Shu-Ren Wang
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005, Fujian People's Republic of China
| | - Ting-Ting Chen
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005, Fujian People's Republic of China
| | - Cun-Cun Yu
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005, Fujian People's Republic of China
| | - Ai-E Wang
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005, Fujian People's Republic of China
- State Key Laboratory of Applied Organic Chemistry Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Pei-Qiang Huang
- Department of Chemistry and Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005, Fujian People's Republic of China
- State Key Laboratory of Applied Organic Chemistry Lanzhou University; Lanzhou 730000 People's Republic of China
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23
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Charaschanya M, Li K, Motiwala HF, Aubé J. An Interrupted Schmidt Reaction: C-C Bond Formation Arising from Nitrilium Ion Capture. Org Lett 2018; 20:6354-6358. [PMID: 30277406 DOI: 10.1021/acs.orglett.8b02531] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The rerouting of the nitrilium ion formed in the Schmidt reaction of ketones and TMSN3 to encompass C-C bond formation with an electron-rich aromatic group is reported. Thus, when the reaction is carried out in HFIP using AlCl3 or AlBr3 as the promoter, imines, iminium ions, or enamide derivatives are obtained through one-pot procedures. The scope and possible mechanisms of these new transformations are considered.
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Affiliation(s)
- Manwika Charaschanya
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-7363 , United States
| | - Kelin Li
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-7363 , United States
| | - Hashim F Motiwala
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-7363 , United States
| | - Jeffrey Aubé
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-7363 , United States
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24
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Li LH, Niu ZJ, Li YX, Liang YM. Transition-metal-free multinitrogenation of amides by C-C bond cleavage: a new approach to tetrazoles. Chem Commun (Camb) 2018; 54:11148-11151. [PMID: 30225493 DOI: 10.1039/c8cc06324a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A metal-free brand-new one-pot multinitrogenation of amides for the chemo- and regioselective synthesis of 1,5-disubstituted tetrazoles has been developed. By means of electrophilic amide activation, and further C-C bond cleavage and rearrangement, a diverse set of functionalized 1,5-DST derivatives were selectively constructed under mild conditions. As showcased in the mechanisms, the chemoselectivity is easily switched by the selection of the starting materials in the reaction.
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Affiliation(s)
- Lian-Hua Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China.
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25
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Luo Z, Liu T, Guo W, Wang Z, Huang J, Zhu Y, Zeng Z. N-Acyl-5,5-dimethylhydantoin, a New Mild Acyl-Transfer Reagent in Pd Catalysis: Highly Efficient Synthesis of Functionalized Ketones. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00182] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Zhongfeng Luo
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, People’s Republic of China
| | - Tingting Liu
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, People’s Republic of China
| | - Weijie Guo
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, People’s Republic of China
| | - Zijia Wang
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, People’s Republic of China
| | - Jingjun Huang
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, People’s Republic of China
- College of Arts and Sciences, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Yulin Zhu
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, People’s Republic of China
| | - Zhuo Zeng
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, People’s Republic of China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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26
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Ramanathan M, Wang YH, Liu YH, Peng SM, Cheng YC, Liu ST. Preparation of Ketimines from Aryldiazonium Salts, Arenes, and Nitriles via Intermolecular Arylation of N-Arylnitrilium Ions. J Org Chem 2018; 83:6133-6141. [PMID: 29732894 DOI: 10.1021/acs.joc.8b01000] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A transition-metal-free approach for the preparation of N-arylketimines has been developed from the direct reaction of aryldiazonium salts, arenes, and nitriles in a one-pot fashion with the consecutive formation of N-C and C-C bonds. This approach proceeds via an in situ generation of N-arylnitrilium intermediate, which then undergoes intermolecular arylation. This three-component strategy offers a step- and atom-efficient way to N-arylketimines from easily accessible reagents under mild reaction conditions. The characterization of stereochemistry of ketimine was achieved by X-ray crystallographic structure and theoretical calculation. Operational simplicity, shorter reaction time, excellent functional group compatibility, and scalability are the key features of this report.
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Affiliation(s)
- Mani Ramanathan
- Department of Chemistry , National Taiwan University , Taipei 106 , Taiwan
| | - Yu-Hao Wang
- Department of Chemistry , National Taiwan University , Taipei 106 , Taiwan
| | - Yi-Hung Liu
- Department of Chemistry , National Taiwan University , Taipei 106 , Taiwan
| | - Shie-Ming Peng
- Department of Chemistry , National Taiwan University , Taipei 106 , Taiwan
| | - Yuan-Chung Cheng
- Department of Chemistry , National Taiwan University , Taipei 106 , Taiwan
| | - Shiuh-Tzung Liu
- Department of Chemistry , National Taiwan University , Taipei 106 , Taiwan
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27
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Chen C, Liu P, Luo M, Zeng X. Kumada Arylation of Secondary Amides Enabled by Chromium Catalysis for Unsymmetric Ketone Synthesis under Mild Conditions. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01380] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Changpeng Chen
- Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Pei Liu
- Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
| | - Meiming Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Zeng
- Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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28
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Mátravölgyi B, Hergert T, Bálint E, Bagi P, Faigl F. Access to Fluorazones by Intramolecular Dehydrative Cyclization of Aromatic Tertiary Amides: A Synthetic and Mechanistic Study. J Org Chem 2018; 83:2282-2292. [DOI: 10.1021/acs.joc.7b03176] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Béla Mátravölgyi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, H-1111 Budapest, Hungary
| | - Tamás Hergert
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, H-1111 Budapest, Hungary
| | - Erika Bálint
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, H-1111 Budapest, Hungary
| | - Péter Bagi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, H-1111 Budapest, Hungary
| | - Ferenc Faigl
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budafoki út 8, H-1111 Budapest, Hungary
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29
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Li LH, Niu ZJ, Liang YM. New Friedel–Crafts strategy for preparing 3-acylindoles. Org Biomol Chem 2018; 16:7792-7796. [PMID: 30325392 DOI: 10.1039/c8ob02094a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new Friedel–Crafts acylation generates diverse high-biological value 3-acylindoles, and forms a new C–C bond under transition-metal-free conditions.
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Affiliation(s)
- Lian-Hua Li
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Zhi-Jie Niu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
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30
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Sato T, Yoritate M, Tajima H, Chida N. Total synthesis of complex alkaloids by nucleophilic addition to amides. Org Biomol Chem 2018; 16:3864-3875. [DOI: 10.1039/c8ob00733k] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
This mini review focuses on the recent progress of total synthesis of complex alkaloids based on the nucleophilic additions toN-alkoxyamides, tertiary amides and secondary amides.
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Affiliation(s)
- Takaaki Sato
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University 3-14-1
- Yokohama 223-8522
- Japan
| | - Makoto Yoritate
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University 3-14-1
- Yokohama 223-8522
- Japan
| | - Hayato Tajima
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University 3-14-1
- Yokohama 223-8522
- Japan
| | - Noritaka Chida
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University 3-14-1
- Yokohama 223-8522
- Japan
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31
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Ye JL, Zhu YN, Geng H, Huang PQ. Metal-free synthesis of quinolines by direct condensation of amides with alkynes: revelation of N-aryl nitrilium intermediates by 2D NMR techniques. Sci China Chem 2017. [DOI: 10.1007/s11426-017-9160-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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32
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Kaiser D, Teskey CJ, Adler P, Maulide N. Chemoselective Intermolecular Cross-Enolate-Type Coupling of Amides. J Am Chem Soc 2017; 139:16040-16043. [PMID: 29099184 PMCID: PMC5691317 DOI: 10.1021/jacs.7b08813] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
![]()
A new approach for
the synthesis of 1,4-dicarbonyl compounds is
reported. Chemoselective activation of amide carbonyl functionality
and subsequent umpolung viaN-oxide
addition generates an electrophilic enolonium species that can be
coupled with a wide range of nucleophilic enolates. The method conveys
broad functional group tolerance on both components, does not suffer
from formation of homocoupling byproducts and avoids the use of transition
metal catalysts.
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Affiliation(s)
- Daniel Kaiser
- Institute of Organic Chemistry, University of Vienna , Währinger Strasse 1090, Vienna, Austria
| | - Christopher J Teskey
- Institute of Organic Chemistry, University of Vienna , Währinger Strasse 1090, Vienna, Austria
| | - Pauline Adler
- Institute of Organic Chemistry, University of Vienna , Währinger Strasse 1090, Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna , Währinger Strasse 1090, Vienna, Austria
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33
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Li LH, Niu ZJ, Liang YM. Synthesis of Functionalized Quinolines through a Reaction of Amides and Alkynes Promoted by Triflic Anhydride/Pyridine. Chemistry 2017; 23:15300-15304. [DOI: 10.1002/chem.201703832] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Indexed: 01/02/2023]
Affiliation(s)
- Lian-Hua Li
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 P. R. China
| | - Zhi-Jie Niu
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Lanzhou 730000 P. R. China
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34
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Zheng JF, Hu XN, Xu Z, Cai DC, Shen TL, Huang PQ. Substrate-Controlled Chemoselective Reactions of Isocyanoacetates with Amides and Lactams. J Org Chem 2017; 82:9693-9703. [DOI: 10.1021/acs.joc.7b01768] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jian-Feng Zheng
- Department of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Xiu-Ning Hu
- Department of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Zhen Xu
- Department of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Dong-Cheng Cai
- Department of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Tai-Long Shen
- Department of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Pei-Qiang Huang
- Department of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
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35
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Shaaban S, Tona V, Peng B, Maulide N. Hydroxamic Acids as Chemoselective (ortho-Amino)arylation Reagents via Sigmatropic Rearrangement. Angew Chem Int Ed Engl 2017; 56:10938-10941. [PMID: 28691189 DOI: 10.1002/anie.201703667] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 06/30/2017] [Indexed: 01/02/2023]
Abstract
The use of readily available hydroxamic acids as reagents for the chemoselective (ortho-amino)arylation of amides is described. This reaction proceeds under metal-free, mild conditions, displays a very broad scope, and constitutes a direct approach for the metal-free attachment of aniline residues to carbonyl derivatives.
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Affiliation(s)
- Saad Shaaban
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Veronica Tona
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Bo Peng
- Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua, 321004, China
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
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36
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Shaaban S, Tona V, Peng B, Maulide N. Hydroxamsäuren als chemoselektive (ortho
-Amino)arylierungsreagenzien durch sigmatrope Umlagerung. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703667] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Saad Shaaban
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Veronica Tona
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Bo Peng
- Department of Chemistry; Zhejiang Normal University; 688 Yingbin Road Jinhua 321004 China
| | - Nuno Maulide
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
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37
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Di Mauro G, Maryasin B, Kaiser D, Shaaban S, González L, Maulide N. Mechanistic Pathways in Amide Activation: Flexible Synthesis of Oxazoles and Imidazoles. Org Lett 2017; 19:3815-3818. [PMID: 28703599 PMCID: PMC5525102 DOI: 10.1021/acs.orglett.7b01678] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The preparation of substituted aminooxazoles and aminoimidazoles from α-arylamides and α-aminoamides through triflic anhydride-mediated amide activation is reported. These reactions proceed via the intermediacy of nitrilium adducts and feature N-oxide-promoted umpolung of the α-position of amides as well as a mechanistically intriguing sequence that results in sulfonyl migration from nitrogen to carbon. Quantum-chemical mechanistic analysis sheds light on the intricacies of the process.
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Affiliation(s)
- Giovanni Di Mauro
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 38, 1090 Vienna, Austria
| | - Boris Maryasin
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 38, 1090 Vienna, Austria.,Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 17, 1090 Vienna, Austria
| | - Daniel Kaiser
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 38, 1090 Vienna, Austria
| | - Saad Shaaban
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 38, 1090 Vienna, Austria
| | - Leticia González
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 17, 1090 Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 38, 1090 Vienna, Austria
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38
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Gao YJ, Luo SP, Ye JL, Huang PQ. An attempted approach to the tricyclic core of haliclonin A: Structural elucidation of the final product by 2D NMR. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.04.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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39
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Yedage SL, Bhanage BM. tert-Butyl Nitrite-Mediated Synthesis of N-Nitrosoamides, Carboxylic Acids, Benzocoumarins, and Isocoumarins from Amides. J Org Chem 2017; 82:5769-5781. [PMID: 28472882 DOI: 10.1021/acs.joc.7b00570] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This work reports tert-butyl nitrite (TBN) as a multitask reagent for (1) the controlled synthesis of N-nitrosoamide from N-alkyl amides, (2) hydrolysis of N-methoxyamides to carboxylic acids, (3) metal- and oxidant-free benzocoumarin synthesis from ortho-aryl-N-methoxyamides via N-H, C-N, and C-H bond activation, and (4) isocoumarin synthesis using Ru(II)/PEG as a recyclable catalytic system via ortho-C-H activation and TBN as an oxygen source. The sequential functional group interconversion of amide to acid has also been examined using IR spectroscopic analysis. Additionally, this methodology is highly advantageous due to short reaction time, gram scale synthesis, and broad substrate scope.
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Affiliation(s)
- Subhash L Yedage
- Department of Chemistry, Institute of Chemical Technology , Mumbai 400019, India
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40
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Tona V, Maryasin B, de la Torre A, Sprachmann J, González L, Maulide N. Direct Regioselective Synthesis of Tetrazolium Salts by Activation of Secondary Amides under Mild Conditions. Org Lett 2017; 19:2662-2665. [PMID: 28485608 PMCID: PMC5442602 DOI: 10.1021/acs.orglett.7b01004] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Tetrazolium salts are biologically active molecules that have found broad applications in biochemical assays. A regioselective synthesis of tetrazolium salts is described through a formal (3 + 2) cycloaddition. The possibility of employing simple amides and azides as starting material and the mild conditions allow a broad functional group tolerance.
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Affiliation(s)
- Veronica Tona
- University of Vienna , Institute of Organic Chemistry, Währinger Strasse 38, 1090 Vienna, Austria
| | - Boris Maryasin
- University of Vienna , Institute of Organic Chemistry, Währinger Strasse 38, 1090 Vienna, Austria
| | - Aurélien de la Torre
- University of Vienna , Institute of Organic Chemistry, Währinger Strasse 38, 1090 Vienna, Austria
| | - Josefine Sprachmann
- University of Vienna , Institute of Organic Chemistry, Währinger Strasse 38, 1090 Vienna, Austria
| | - Leticia González
- University of Vienna , Insitute of Theoretical Chemistry, Währinger Strasse 17, 1090 Vienna, Austria
| | - Nuno Maulide
- University of Vienna , Institute of Organic Chemistry, Währinger Strasse 38, 1090 Vienna, Austria
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41
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de la Torre A, Kaiser D, Maulide N. Flexible and Chemoselective Oxidation of Amides to α-Keto Amides and α-Hydroxy Amides. J Am Chem Soc 2017; 139:6578-6581. [PMID: 28485589 DOI: 10.1021/jacs.7b02983] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A suite of flexible and chemoselective methods for the transition-metal-free oxidation of amides to α-keto amides and α-hydroxy amides is presented. These highly valuable motifs are accessed in good to excellent yields and stereoselectivities with high functional group tolerance. The utility of the method is showcased by the formal synthesis of a potent histone deacetylase inhibitor.
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Affiliation(s)
- Aurélien de la Torre
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 38, 1090 Vienna, Austria
| | - Daniel Kaiser
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 38, 1090 Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, Faculty of Chemistry, University of Vienna , Währinger Straße 38, 1090 Vienna, Austria
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42
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Li Y, Li J, Ding H, Li A. Recent advances on the total synthesis of alkaloids in mainland China. Natl Sci Rev 2017. [DOI: 10.1093/nsr/nwx050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
AbstractAlkaloids are a large family of natural products that mostly contain basic nitrogen atoms. Because of their intriguing structures and important functions, they have long been popular targets for synthetic organic chemists. China's chemists have made significant progress in the area of alkaloid synthesis over past decades. In this article, selected total syntheses of alkaloids from research groups in mainland China during the period 2011–16 are highlighted.
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Affiliation(s)
- Yong Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing 312000, China
| | - Jian Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310028, China
| | - Ang Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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43
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Kaiser D, de la Torre A, Shaaban S, Maulide N. Metal-Free Formal Oxidative C-C Coupling by In Situ Generation of an Enolonium Species. Angew Chem Int Ed Engl 2017; 56:5921-5925. [PMID: 28429392 DOI: 10.1002/anie.201701538] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 03/11/2017] [Indexed: 01/27/2023]
Abstract
Much contemporary organic synthesis relies on transformations that are driven by the intrinsic, so-called "natural", polarity of chemical bonds and reactive centers. The design of unconventionally polarized synthons is a highly desirable strategy, as it generally enables unprecedented retrosynthetic disconnections for the synthesis of complex substances. Whereas the umpolung of carbonyl centers is a well-known strategy, polarity reversal at the α-position of a carbonyl group is much rarer. Herein, we report the design of a novel electrophilic enolonium species and its application in efficient and chemoselective, metal-free oxidative C-C coupling.
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Affiliation(s)
- Daniel Kaiser
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Aurélien de la Torre
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Saad Shaaban
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
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44
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Kaiser D, de la Torre A, Shaaban S, Maulide N. Metallfreie formale oxidative C-C-Kupplung durch In-situ-Erzeugung einer elektrophilen Enoloniumspezies. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701538] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Daniel Kaiser
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Aurélien de la Torre
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Saad Shaaban
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Nuno Maulide
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
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45
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Sumita A, Otani Y, Ohwada T. Chemoselective generation of acyl phosphates, acylium ion equivalents, from carboxylic acids and an organophosphate ester in the presence of a Brønsted acid. Chem Commun (Camb) 2017; 53:1482-1485. [DOI: 10.1039/c6cc09618b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactions of an organophosphate ester with carboxylic acids proceeded smoothly and chemoselectively in the presence of a Brønsted acid, affording acyl phosphate intermediates, leading to formation of various functional aromatic ketones.
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Affiliation(s)
- Akinari Sumita
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
| | - Yuko Otani
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
| | - Tomohiko Ohwada
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
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46
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Huang PQ, Huang YH, Wang SR. One-pot synthesis of N-heterocycles and enimino carbocycles by tandem dehydrative coupling–reductive cyclization of halo-sec-amides and dehydrative cyclization of olefinic sec-amides. Org Chem Front 2017. [DOI: 10.1039/c6qo00720a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report a versatile approach for the one-pot synthesis of substituted pyrrolidine, piperidine, indolizidine, and quinolizidine ring systems, and enimino carbocycles.
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Affiliation(s)
- Pei-Qiang Huang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Ying-Hong Huang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Shu-Ren Wang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
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47
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Miao WQ, Liu JQ, Wang XS. An efficient synthesis of 6-arylbenzo[4,5]imidazo[2,1-a]isoquinolines via sequential α-arylation of carbonyl and deacylation catalyzed by CuI. Org Biomol Chem 2017; 15:5325-5331. [DOI: 10.1039/c7ob01022b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Dibenzoyl methane was found to undergo α-arylation of carbonyl and deacylation reaction with 2-(2-bromophenyl)-1H-benzo[d]imidazoles catalyzed by CuI in the presence of Cs2CO3, and provided an efficient synthesis of 6-arylbenzo[4,5]imidazo[2,1-a]isoquinolines.
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Affiliation(s)
- Wei-Qing Miao
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthesis for Functional Materials
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Jian-Quan Liu
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthesis for Functional Materials
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Xiang-Shan Wang
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthesis for Functional Materials
- Jiangsu Normal University
- Xuzhou
- P. R. China
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