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1
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Zhu Y, Liu T, Liu B, Shi H, Tan Q, Xu B. From α-keto acids to nitrile oxides enabled by copper nitrate: a facile access to fused isoxazolines. Org Chem Front 2022. [DOI: 10.1039/d1qo01574e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented generation of nitrile oxides was developed from α-keto acids and copper nitrate through a novel carbon–carbon bond cleavage mode, affording pharmacologically interesting fused isoxazolines via 1,3-dipolar cycloadditions.
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Affiliation(s)
- Yuping Zhu
- Department of Chemistry, Affiliated Nantong Hospital of Shanghai University (The Sixth People's Hospital of Nantong), Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Tianqi Liu
- Department of Chemistry, Affiliated Nantong Hospital of Shanghai University (The Sixth People's Hospital of Nantong), Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Bingxin Liu
- Department of Chemistry, Affiliated Nantong Hospital of Shanghai University (The Sixth People's Hospital of Nantong), Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Houguang Shi
- Department of Chemistry, Affiliated Nantong Hospital of Shanghai University (The Sixth People's Hospital of Nantong), Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Qitao Tan
- Department of Chemistry, Affiliated Nantong Hospital of Shanghai University (The Sixth People's Hospital of Nantong), Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, School of Medicine, Shanghai University, Shanghai 200444, China
| | - Bin Xu
- Department of Chemistry, Affiliated Nantong Hospital of Shanghai University (The Sixth People's Hospital of Nantong), Shanghai Engineering Research Center of Organ Repair, Innovative Drug Research Center, School of Medicine, Shanghai University, Shanghai 200444, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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2
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Li B, Cheng X, Guan ZY, Li SY, Huo T, Cheng G, Fan YH, Zhou FS, Deng QH. Zinc-catalyzed asymmetric nitrooxylation of β-keto esters/amides with a benziodoxole-derived nitrooxy transfer reagent. Org Chem Front 2020. [DOI: 10.1039/d0qo01022g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Zinc-catalyzed asymmetric nitrooxylation to afford a series of α-nitrooxy β-keto esters/amides in high yields and with low to moderate enantioselectivities has been disclosed.
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Affiliation(s)
- Bin Li
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- P. R. China
| | - Xuan Cheng
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- P. R. China
| | - Zhen-Yu Guan
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- P. R. China
| | - Si-Yuan Li
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- P. R. China
| | - Tao Huo
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- P. R. China
| | - Guo Cheng
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- P. R. China
| | - Yan-Hui Fan
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- P. R. China
| | - Fang-Shuai Zhou
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- P. R. China
| | - Qing-Hai Deng
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- P. R. China
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3
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Gao M, Gan Y, Xu B. From Alkenes to Isoxazolines via Copper-Mediated Alkene Cleavage and Dipolar Cycloaddition. Org Lett 2019; 21:7435-7439. [PMID: 31509424 DOI: 10.1021/acs.orglett.9b02748] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An unprecedented copper-mediated anion transformation is reported, along with selective C═C double bond cleavage and dipolar cycloaddition reaction from simple alkenes and inexpensive copper nitrate. Various transformations demonstrate the generality of this method. Further mechanistic investigation indicates a novel ionic pathway for alkene cleavage and highlights the coeffect of iodide and boric acid as additives on the inhibition of well-documented competitive nitration byproducts.
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Affiliation(s)
- Mingchun Gao
- Department of Chemistry, Innovative Drug Research Center, School of Materials Science and Engineering , Shanghai University , Shanghai 200444 , China
| | - Yuansheng Gan
- Department of Chemistry, Innovative Drug Research Center, School of Materials Science and Engineering , Shanghai University , Shanghai 200444 , China
| | - Bin Xu
- Department of Chemistry, Innovative Drug Research Center, School of Materials Science and Engineering , Shanghai University , Shanghai 200444 , China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , Shanghai 200032 , China
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4
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Li C, Long P, Wu H, Yin H, Chen FX. N-Thiocyanato-dibenzenesulfonimide: a new electrophilic thiocyanating reagent with enhanced reactivity. Org Biomol Chem 2019; 17:7131-7134. [DOI: 10.1039/c9ob01340g] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
N-Thiocyanato-dibenzenesulfonimide: a new electrophilic thiocyanating reagent was readily prepared and exhibited enhanced reactivity with a wide scope of substrates.
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Affiliation(s)
- Chengqiu Li
- School of Chemistry & Chemical Engineering
- Beijing Institute of Technology (Liangxiang Campus)
- Beijing 102488
- China
| | - Pingliang Long
- School of Chemistry & Chemical Engineering
- Beijing Institute of Technology (Liangxiang Campus)
- Beijing 102488
- China
| | - Haopeng Wu
- School of Chemistry & Chemical Engineering
- Beijing Institute of Technology (Liangxiang Campus)
- Beijing 102488
- China
| | - Hongquan Yin
- School of Chemistry & Chemical Engineering
- Beijing Institute of Technology (Liangxiang Campus)
- Beijing 102488
- China
| | - Fu-Xue Chen
- School of Chemistry & Chemical Engineering
- Beijing Institute of Technology (Liangxiang Campus)
- Beijing 102488
- China
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5
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Lin Y, Zhang K, Gao M, Jiang Z, Liu J, Ma Y, Wang H, Tan Q, Xiao J, Xu B. Copper nitrate-mediated synthesis of 3-aryl isoxazolines and isoxazoles from olefinic azlactones. Org Biomol Chem 2019; 17:5509-5513. [DOI: 10.1039/c9ob00857h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A copper nitrate-mediated [2 + 2 + 1] cycloaddition reaction was developed for the expedient synthesis of isoxazolines and isoxazoles from olefinic azlactones.
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