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Cen K, Liu Y, Yu J, Zeng Z, Hou Q, He G, Ouyang M, Wang Q, Wang D, Zhao F, Cai J. Electrocatalytic Cascade Selenylation/Cyclization/Deamination of 2-Hydroxyaryl Enaminones: Synthesis of 3-Selenylated Chromones under Mild Conditions. J Org Chem 2024; 89:8632-8640. [PMID: 38843514 DOI: 10.1021/acs.joc.4c00567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Herein, we disclosed a highly efficient pathway toward 3-selenylated chromone derivatives via electrocatalytic cascade selenylation/cyclization/deamination of 2-hydroxyaryl enaminones with diselenides. This method showed mild conditions, easy operation, wide substrate scope, and good functional group tolerance. Furthermore, this electrosynthesis strategy was amendable to scale-up the reaction. Additionally, the preliminary experiments revealed that this reaction probably proceeded via a cation pathway instead of a radical pathway.
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Affiliation(s)
- Kaili Cen
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Yuan Liu
- Chuanshan College University of South China, Hengyang, Hunan 421001, China
| | - Junhong Yu
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Zhouting Zeng
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Qian Hou
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Guojun He
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Mixia Ouyang
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Qiaolin Wang
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
| | - Dahan Wang
- Department of Food and Chemical Engineering, Shaoyang University, Shaoyang, Hunan 422100, China
| | - Feng Zhao
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua, Hunan 418000, China
| | - Jinhui Cai
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China
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2
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Song S, Peng M, Zhang Z, Hu H, Wei Y, Yan SJ, Wang Y, Yu F. Divergent Synthesis of 2-Chromonyl-3-hydrazono-chromones and 2-Alkoxy-3-hydrazono-chromones through Switchable Annulation Reactions of o-Hydroxyphenylenaminones with Aryldiazonium Salts. Org Lett 2024; 26:4980-4985. [PMID: 38832696 DOI: 10.1021/acs.orglett.4c01571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
An unprecedented selective chromone annulation reaction controlled by solvent for the divergent synthesis of two types of 2,3-disubstituted chromone skeletons has been developed. A variety of 2-chromonyl-3-hydrazono-chromones and 2-alkoxy-3-hydrazono-chromones were constructed efficiently from readily available o-hydroxyphenylenaminones (o-HPEs) and aryldiazonium salts at room temperature. This strategy is highly chemoselective and features mild reaction conditions, broad substrate scope, broad functional group tolerance, easy gram-scale preparation, and simple filtration to obtain the pure products without tedious column chromatography.
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Affiliation(s)
- Siyu Song
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Menglin Peng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Zhilai Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Huimin Hu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Yuanzheng Wei
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Sheng-Jiao Yan
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Yongchao Wang
- Colleage of Vocational and Technical Education, Yunnan Normal University, Kunming 650092, China
| | - Fuchao Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
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3
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Hu W, Diao X, Yuan J, Liang W, Yang W, Yang L, Ma J, Zhang S. Photoredox-Catalyzed Tandem Cyclization of Enaminones with N-Sulfonylaminopyridinium Salts toward the Synthesis of 3-Sulfonaminated Chromones. J Org Chem 2024; 89:644-655. [PMID: 38088130 DOI: 10.1021/acs.joc.3c02399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
A photoredox-catalyzed intermolecular tandem sulfonamination/cyclization of enaminones was realized by using N-aminopyridinium salts as the sulfonaminated reagents without transition-metal catalysts or bases. The reaction exhibits a broad scope and good functional group tolerance, good yields, and regioselectivity. Preliminary mechanistic studies support the radical property of the reaction and the involvement of N-centered radical intermediates.
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Affiliation(s)
- Wenyu Hu
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Xiaoqiong Diao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Jinwei Yuan
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Wei Liang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Wan Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Liangru Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
| | - Ji Ma
- Tobacco Research Institute of China National Tobacco Company, Zhengzhou 450001, P.R. China
| | - Shouren Zhang
- Henan Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou 450006, P. R. China
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4
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Wu LH, Liu X, Liu ZW, Chen ZX, Fu XL, Yang K. Metal-free synthesis of difluoro/trifluoromethyl carbinol-containing chromones via tandem cyclization of o-hydroxyaryl enaminones. Org Biomol Chem 2023; 21:9236-9241. [PMID: 37966029 DOI: 10.1039/d3ob01582c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
We herein propose a HFIP-promoted tandem cyclization reaction for the synthesis of difluoro/trifluoromethyl carbinol-containing chromones from o-hydroxyphenyl enaminones at room temperature. This protocol provides a facile and efficient approach to access diverse difluoro/trifluoromethylated carbinols in good to excellent yields. In addition, gram-scale and synthetic derivatization experiments have also been performed.
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Affiliation(s)
- Long-Hui Wu
- College of pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China.
| | - Xia Liu
- College of pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China.
| | - Zhao-Wen Liu
- College of pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China.
| | - Zhi-Xi Chen
- College of pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China.
| | - Xin-Lei Fu
- College of pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China.
| | - Kai Yang
- College of pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China.
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5
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Xia JH, Chen Q, Yuan JW, Shi WS, Yang LR, Xiao YM. Selectfluor-mediated tandem cyclization of enaminones with diselenides toward the synthesis of 3-selenylated chromones. RSC Adv 2023; 13:26948-26959. [PMID: 37692339 PMCID: PMC10486202 DOI: 10.1039/d3ra05246j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 09/04/2023] [Indexed: 09/12/2023] Open
Abstract
A practical and metal-free approach for the regioselective selenation of chromones employing Selectfluor reagent under mild conditions is described. The developed method is suitable for a wide substrate scope and affords 3-selenylated chromones in good to excellent yield with high selectivity. An ionic mechanism is proposed for this transformation. Furthermore, the application of potassium thiocyanate with enaminones for the synthesis of thiocyano chromones in this transformation is also successful.
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Affiliation(s)
- Ji-Hong Xia
- ENOVA Pharmaceutical Research (Nanjing) Co. Ltd Nanjing 210033 P. R. China
| | - Qian Chen
- School of Chemistry & Chemical Engineering, Henan University of Technology Zhengzhou 450001 China
| | - Jin-Wei Yuan
- School of Chemistry & Chemical Engineering, Henan University of Technology Zhengzhou 450001 China
| | - Wei-Shuo Shi
- School of Chemistry & Chemical Engineering, Henan University of Technology Zhengzhou 450001 China
| | - Liang-Ru Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology Zhengzhou 450001 China
| | - Yong-Mei Xiao
- School of Chemistry & Chemical Engineering, Henan University of Technology Zhengzhou 450001 China
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