1
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Wei BY, Xie DT, Lai SQ, Jiang Y, Fu H, Wei D, Han B. Electrochemically Tuned Oxidative [4+2] Annulation and Dioxygenation of Olefins with Hydroxamic Acids. Angew Chem Int Ed Engl 2021; 60:3182-3188. [PMID: 33058402 DOI: 10.1002/anie.202012209] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Indexed: 12/23/2022]
Abstract
This work represents the first [4+2] annulation of hydroxamic acids with olefins for the synthesis of benzo[c][1,2]oxazines scaffold via anode-selective electrochemical oxidation. This protocol features mild conditions, is oxidant free, shows high regioselectivity and stereoselectivity, broad substrate scope of both alkenes and hydroxamic acids, and is compatible with terpenes, peptides, and steroids. Significantly, the dioxygenation of olefins employing hydroxamic acid is also successfully achieved by switching the anode material under the same reaction conditions. The study not only reveals a new reactivity of hydroxamic acids and its first application in electrosynthesis but also provides a successful example of anode material-tuned product selectivity.
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Affiliation(s)
- Bang-Yi Wei
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Dong-Tai Xie
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Sheng-Qiang Lai
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yu Jiang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Hong Fu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Dian Wei
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
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2
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Guan Z, Zhu S, Wang S, Wang H, Wang S, Zhong X, Bu F, Cong H, Lei A. Electrochemical Oxidative Carbon‐Atom Difunctionalization: Towards Multisubstituted Imino Sulfide Ethers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202011329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhipeng Guan
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS) Wuhan University Wuhan 430072 Hubei P. R. China
| | - Shuxiang Zhu
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS) Wuhan University Wuhan 430072 Hubei P. R. China
| | - Siyuan Wang
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS) Wuhan University Wuhan 430072 Hubei P. R. China
| | - Huamin Wang
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS) Wuhan University Wuhan 430072 Hubei P. R. China
| | - Siyuan Wang
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS) Wuhan University Wuhan 430072 Hubei P. R. China
| | - Xingxing Zhong
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS) Wuhan University Wuhan 430072 Hubei P. R. China
| | - Faxiang Bu
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS) Wuhan University Wuhan 430072 Hubei P. R. China
| | - Hengjiang Cong
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS) Wuhan University Wuhan 430072 Hubei P. R. China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS) Wuhan University Wuhan 430072 Hubei P. R. China
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3
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Guan Z, Zhu S, Wang S, Wang H, Wang S, Zhong X, Bu F, Cong H, Lei A. Electrochemical Oxidative Carbon-Atom Difunctionalization: Towards Multisubstituted Imino Sulfide Ethers. Angew Chem Int Ed Engl 2021; 60:1573-1577. [PMID: 33006414 DOI: 10.1002/anie.202011329] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/21/2020] [Indexed: 11/07/2022]
Abstract
Ethers (C-O/S) are ubiquitously found in a wide array of functional molecules and natural products. Nonetheless, the synthesis of imino sulfide ethers, containing an N(sp2 )=C(sp2 )-O/S fragment, still remains a challenge because of its sensitivity to acid. Developed here in is an unprecedented electrochemical oxidative carbon-atom difunctionalization of isocyanides, providing a series of novel multisubstituted imino sulfide ethers. Under metal-free and external oxidant-free conditions, isocyanides react smoothly with simple and readily available mercaptans and alcohols. Importantly, the procedure exhibited high stereoselectivities, excellent functional-group tolerance, and good efficiency on large-scale synthesis, as well as further derivatization of the products.
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Affiliation(s)
- Zhipeng Guan
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Shuxiang Zhu
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Siyuan Wang
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Huamin Wang
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Siyuan Wang
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Xingxing Zhong
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Faxiang Bu
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Hengjiang Cong
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences and The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, Hubei, P. R. China
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Wei B, Xie D, Lai S, Jiang Y, Fu H, Wei D, Han B. Electrochemically Tuned Oxidative [4+2] Annulation and Dioxygenation of Olefins with Hydroxamic Acids. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012209] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Bang‐Yi Wei
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Dong‐Tai Xie
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Sheng‐Qiang Lai
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Yu Jiang
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Hong Fu
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Dian Wei
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
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5
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Hu X, Nie L, Zhang G, Lei A. Electrochemical Oxidative [4+2] Annulation for the π‐Extension of Unfunctionalized Heterobiaryl Compounds. Angew Chem Int Ed Engl 2020; 59:15238-15243. [DOI: 10.1002/anie.202003656] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/24/2020] [Indexed: 12/15/2022]
Affiliation(s)
- Xia Hu
- The Institute for Advanced Studies (IAS) College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
| | - Lei Nie
- The Institute for Advanced Studies (IAS) College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
| | - Guoting Zhang
- The Institute for Advanced Studies (IAS) College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
| | - Aiwen Lei
- The Institute for Advanced Studies (IAS) College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
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6
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Hu X, Nie L, Zhang G, Lei A. Electrochemical Oxidative [4+2] Annulation for the π‐Extension of Unfunctionalized Heterobiaryl Compounds. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003656] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xia Hu
- The Institute for Advanced Studies (IAS) College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
| | - Lei Nie
- The Institute for Advanced Studies (IAS) College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
| | - Guoting Zhang
- The Institute for Advanced Studies (IAS) College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
| | - Aiwen Lei
- The Institute for Advanced Studies (IAS) College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 P. R. China
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Xu C, Xie W, Xu J. Metal-free and regiospecific synthesis of 3-arylindoles. Org Biomol Chem 2020; 18:2661-2671. [PMID: 32196059 DOI: 10.1039/d0ob00317d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A convenient, metal-free, and organic acid-base promoted synthetic method to prepare 3-arylindoles from 3-aryloxirane-2-carbonitriles and arylhydrazine hydrochlorides has been developed. In the reaction, the organic acid catalyzes a tandem nucleophilic ring-opening reaction of aryloxiranecarbonitriles and arylhydrazine hydrochlorides and Fischer indolization. The organic base triethylamine plays a crucial role in the final elimination step in the Fischer indole synthesis, affording 3-arylindoles regiospecifically. The reaction features advantages of microwave acceleration, non-metal participation, short reaction time, organic acid-base co-catalysis, and broad substrate scope.
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Affiliation(s)
- Chuangchuang Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Wenlai Xie
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
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Wang Y, Tian B, Ding M, Shi Z. Electrochemical Cross-Dehydrogenative Coupling between Phenols and β-Dicarbonyl Compounds: Facile Construction of Benzofurans. Chemistry 2020; 26:4297-4303. [PMID: 31900957 DOI: 10.1002/chem.201904750] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Indexed: 11/10/2022]
Abstract
Preparative electrochemical synthesis is an ideal method for establishing green, sustainable processes. The major benefits of an electro-organic strategy over that of conventional chemical synthesis are the avoidance of reagent waste and mild reaction conditions. Here, an intermolecular cross-dehydrogenative coupling between phenols and β-dicarbonyl compounds has been developed to build various benzofurans under undivided electrolytic conditions. Neither transition metals nor external chemical oxidants are required to facilitate the dehydrogenation and dehydration processes. The key factor in success was the use of nBu4 NBF4 as the electrolyte and hexafluoroisopropanol as the solvent, which play key roles in the cyclocondensation step. This electrolysis is scalable and can be used as a key step in drug synthesis. On the basis of several experimental results, the mechanism, particularly of the remarkable anodic oxidation and cyclization process, was illustrated.
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Affiliation(s)
- Yandong Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P.R. China
| | - Bailin Tian
- Key Lab of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P.R. China
| | - Mengning Ding
- Key Lab of Mesoscopic Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P.R. China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P.R. China
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Li Y, Qiu S, Fan L, Yin G. Cooperative Palladium and Copper Catalysis: One‐pot Synthesis of Diamino‐Substituted Naphthalenes from Aryl Halides, 1,4‐Bis(trimethylsilyl)butadiyne and Amines. ChemCatChem 2020. [DOI: 10.1002/cctc.201901745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yuan Li
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| | - Shaozhong Qiu
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| | - Ling Fan
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
| | - Guodong Yin
- College of Chemistry and Chemical Engineering Hubei Key Laboratory of Pollutant Analysis and Reuse TechnologyHubei Normal University Huangshi 435002 P. R. China
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10
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Zhang X, Cui T, Zhao X, Liu P, Sun P. Electrochemical Difunctionalization of Alkenes by a Four‐Component Reaction Cascade Mumm Rearrangement: Rapid Access to Functionalized Imides. Angew Chem Int Ed Engl 2020; 59:3465-3469. [DOI: 10.1002/anie.201913332] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/22/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Xiaofeng Zhang
- School of Chemistry and Materials ScienceJiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution ControlJiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 P. R. China
| | - Ting Cui
- School of Chemistry and Materials ScienceJiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution ControlJiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 P. R. China
| | - Xin Zhao
- School of Chemistry and Materials ScienceJiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution ControlJiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 P. R. China
| | - Ping Liu
- School of Chemistry and Materials ScienceJiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution ControlJiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 P. R. China
| | - Peipei Sun
- School of Chemistry and Materials ScienceJiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution ControlJiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 P. R. China
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Zhang X, Cui T, Zhao X, Liu P, Sun P. Electrochemical Difunctionalization of Alkenes by a Four‐Component Reaction Cascade Mumm Rearrangement: Rapid Access to Functionalized Imides. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913332] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xiaofeng Zhang
- School of Chemistry and Materials ScienceJiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution ControlJiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 P. R. China
| | - Ting Cui
- School of Chemistry and Materials ScienceJiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution ControlJiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 P. R. China
| | - Xin Zhao
- School of Chemistry and Materials ScienceJiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution ControlJiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 P. R. China
| | - Ping Liu
- School of Chemistry and Materials ScienceJiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution ControlJiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 P. R. China
| | - Peipei Sun
- School of Chemistry and Materials ScienceJiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution ControlJiangsu Collaborative Innovation Center of Biomedical Functional MaterialsNanjing Normal University Nanjing 210023 P. R. China
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