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Zhou Q, Li B, Zhang X, Fan X. C-H activation-initiated spiroannulation reactions and their applications in the synthesis of spirocyclic compounds. Org Biomol Chem 2024; 22:2324-2338. [PMID: 38391295 DOI: 10.1039/d3ob02056h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Spirocyclic skeletons are prevalent in natural products, pharmaceuticals and organic functional materials. Meanwhile, transition-metal-catalyzed C-H activation reactions have demonstrated unparalleled advantages such as high efficiency, excellent atom-economy, good chemoselectivity and regioselectivity for the formation of target organic molecules. In recent years, C-H activation reactions have been creatively utilized in the synthesis of spirocyclic compounds. This review summarizes the most recent progress made in C-H activation-initiated spiroannulation reactions and their applications in the construction of structurally diverse and biologically valuable spirocyclic scaffolds by using alkynes, diazo compounds, maleimides, alkenes, quinones and cyclopropenones as the coupling partners.
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Affiliation(s)
- Qianting Zhou
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
| | - Bin Li
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
| | - Xinying Zhang
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
| | - Xuesen Fan
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
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Jiao Y, Zhu J, Han N, Shen R, Zhang Y, Rong L, Zhang J. Three-Component Reaction for the Synthesis of Spiro-Heterocycles from Isatins, Substituted Ureas, and Cyclic Ketones. J Org Chem 2024; 89:3441-3452. [PMID: 38377488 DOI: 10.1021/acs.joc.3c02894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
We reported an efficient three-component reaction to access new spiro heterocycles through the annulation reactions of isatins, substituted ureas, and cyclic ketones under normal laboratory conditions, which is another example of isatins being used to build spiro compounds by the ring-opening and recyclization processes. The wide range of substrates, simple operation, normal experimental conditions, and high yields make the approach of high practical value.
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Affiliation(s)
- Yang Jiao
- Jiangsu Engineering Research Center of Biological Data Mining and Healthcare Transformation, Xuzhou Medical University, Xuzhou 221004, Jiangsu, PR China
| | - Junyi Zhu
- Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Niankun Han
- Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Rongcheng Shen
- Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Yiru Zhang
- Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Liangce Rong
- Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, PR China
| | - Jinpeng Zhang
- Jiangsu Engineering Research Center of Biological Data Mining and Healthcare Transformation, Xuzhou Medical University, Xuzhou 221004, Jiangsu, PR China
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Wen M, Zhang M, Gu F, Geng Y, Liu X, Wu Q, Yang X. Synthesis of spiropyrans via Ru(II)-catalyzed coupling of 3-aryl-2 H-benzo[ b][1,4]oxazines with benzoquinones. Org Biomol Chem 2024; 22:998-1009. [PMID: 38186088 DOI: 10.1039/d3ob01971c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
An efficient Ru(II)-catalyzed C-H activation-based spiroannulation of benzoxazines with the easily available benzoquinone and N-sulfonyl quinone monoimine has been realized, providing a straightforward strategy to access NH-containing spiropyrans in moderate to good yields with good functional group compatibility. The procedure features atom- and step-economy, mild conditions, and excellent chemoselectivity. Moreover, a catalytically competent five-membered cycloruthenated complex has been isolated.
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Affiliation(s)
- Mengke Wen
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
- College of Sciences, Northeastern University, Shenyang, 110819, China
| | - Mengying Zhang
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Fan Gu
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Yuehua Geng
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Xiangyang Liu
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Qingnan Wu
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Xifa Yang
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
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Qin Y, Wang Y, Deng R, Pei Z, Xiong HY, Wang T, Zhang G. Straightforward Access to Free β 2,3,3 -Amino Acids through One Pot C-H Activation/C-C Cleavage. Chemistry 2024:e202304254. [PMID: 38236073 DOI: 10.1002/chem.202304254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 01/19/2024]
Abstract
The first synthesis of unnatural β2,3,3 -amino acids with a spirocyclic backbone by one-pot protocol has been presented. This reaction features wide functional group tolerance and feasibility of post-functionalization of natural products and biologically important molecules. Novel dipeptide and tripeptide structures were assembled using this newly developed β2,3,3 -amino acid in high efficiency. The combination of C-H activation and C-C cleavage for the synthesis of β-amino acids would trigger more promising synthetic routes for this compound.
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Affiliation(s)
- Yibo Qin
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P.R. China
| | - Yaping Wang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P.R. China
| | - Ruwendan Deng
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P.R. China
| | - Zengkai Pei
- Tianjin Kailiqi Biopharma Technology Co., Ltd, Tianjin, 300190, P.R. China
| | - Heng-Ying Xiong
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P.R. China
| | - Teng Wang
- College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Guangwu Zhang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P.R. China
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