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Yuan H, Ji M, Xue H, Chen H, Zhang Y. Understanding the hydration of arylacetylenes to synthesize the carbonyl compounds via electroreduction of bromide intermediates. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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Li L, Liu Y, Zhou S, Li J, Qi C, Zhang F. Synthesis of 4-hydroxy-3-benzoylpyridin-2(1 H)-one derivatives using pyrrolidine as catalyst. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2023.2177872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Affiliation(s)
- Linbo Li
- School of Pharmacy, Jiamusi University, Jiamusi, China
| | - Yuxiao Liu
- School of Pharmacy, Jiamusi University, Jiamusi, China
| | - Shujing Zhou
- School of Pharmacy, Jiamusi University, Jiamusi, China
| | - Jinjing Li
- School of Pharmacy, Jiamusi University, Jiamusi, China
| | - Chenze Qi
- School of Pharmacy, Jiamusi University, Jiamusi, China
- School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, China
| | - Furen Zhang
- School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Shaoxing, China
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3
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Kang QQ, Wang ZY, Hu SJ, Luo CM, Cai XE, Sun YB, Li T, Wei WT. Copper-catalyzed switchable cyclization of alkyne-tethered α-bromocarbonyls: selective access to quinolin-2-ones and quinoline-2,4-diones. Org Chem Front 2022. [DOI: 10.1039/d2qo01240e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Copper-catalyzed cyclization of alkynes has played a significant role in modern catalytic chemistry.
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Affiliation(s)
- Qing-Qing Kang
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Zi-Ying Wang
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Sen-Jie Hu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Chun-Mei Luo
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Xue-Er Cai
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Yong-Bin Sun
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Ting Li
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan, 473061, China
| | - Wen-Ting Wei
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
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Abstract
An efficient, simple, and metal-free fluorination of 2H-indazoles has been developed using N-fluorobenzenesulfonimide (NFSI) in water under ambient air. This transformation provides direct access to fluorinated indazole derivatives with broad functionalities in satisfactory yields. The experimental results suggest a radical mechanistic pathway of this protocol.
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Affiliation(s)
- Payel Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
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Gujjarappa R, Vodnala N, Kandpal A, Roy L, Gupta S, Malakar CC. C sp–C sp bond cleavage and fragment coupling: a transition metal-free “extrusion and recombination” approach towards synthesis of 1,2-diketones. Org Chem Front 2021. [DOI: 10.1039/d1qo00848j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A metal-free strategy for C–C bond activation of 1,3-diynes has been established via an “extrusion and recombination” approach to derive structurally important 1,2-diketones in good yields with excellent selectivity.
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Affiliation(s)
- Raghuram Gujjarappa
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal 795004, Manipur, India
| | - Nagaraju Vodnala
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal 795004, Manipur, India
- Department of Chemistry, Multi-storey building, HauzKhas, Indian Institute of Technology Delhi, New Delhi, 110016, India
| | - Ashish Kandpal
- Institute of Chemical Technology Mumbai – IOC Odisha Campus Bhubaneswar, IIT Kharagpur Extension Centre, Bhubaneswar 751013, India
| | - Lisa Roy
- Institute of Chemical Technology Mumbai – IOC Odisha Campus Bhubaneswar, IIT Kharagpur Extension Centre, Bhubaneswar 751013, India
| | - Sreya Gupta
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Kolkata, Chunilal Bhawan, 168, Maniktala Main Road, Kolkata 700054, India
| | - Chandi C. Malakar
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal 795004, Manipur, India
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Tang L, Yang F, Yang Z, Chen H, Cheng H, Zhang S, Zhou Q, Rao W. Application of Bifunctional 2-Amino-1,4-naphthoquinones in Visible-Light-Promoted Photocatalyst-Free Alkene Perfluoroalkyl-Alkenylation. Org Lett 2020; 23:519-524. [PMID: 33382626 DOI: 10.1021/acs.orglett.0c04036] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple and practical photochemical strategy for intermolecular perfluoroalkyl-alkenylation of alkenes with 2-amino-1,4-naphthoquinones and perfluoroalkyl iodides has been demonstrated under visible-light irradiation. Mechanistic studies reveal that easily available 2-amino-1,4-naphthoquinone substrates can serve as efficient photosensitizers to activate perfluoroalkyl iodides through a photoredox process. Therefore, the developed radical relay reaction proceeds smoothly without additional transition metals and photocatalysts.
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Affiliation(s)
- Lin Tang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China.,Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the Sourth of Henan, Xinyang 464000, China
| | - Fang Yang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Zhen Yang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Hanfei Chen
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Hao Cheng
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Shuaifei Zhang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Qiuju Zhou
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Weihao Rao
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
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