1
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Xuan GR, Chen XK, Liu MC, Zhou YB, Wu HY. Deselenylative Acylation and Nitration of Monoselenides. Org Lett 2024. [PMID: 38814147 DOI: 10.1021/acs.orglett.4c01537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
A deselenylative protocol that enables the construction of the C-C and C-N bonds has been disclosed. By using acyl chloride/AgOTf as an efficient acylation reagent, diarylselenides smoothly undergo deselenylative acylation to produce a series of aroyl compounds. In addition, deselenylative nitration can be enabled by a mild nitration reagent consisting of TsCl and AgNO3, furnishing a diverse array of nitroaromatic compounds.
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Affiliation(s)
- Guo-Rong Xuan
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xin-Kai Chen
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Miao-Chang Liu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yun-Bing Zhou
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
- Key Lab of Biohealth Materials and Chemistry of Wenzhou, Wenzhou 325035, China
| | - Hua-Yue Wu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
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2
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Wang ZY, Liu SZ, Guo C, Cheng YZ, Li Q, Dou J, Li D. Nickel-catalyzed γ-alkylation of cyclopropyl ketones with unactivated primary alkyl chlorides: balancing reactivity and selectivity via halide exchange. RSC Adv 2024; 14:12883-12887. [PMID: 38650692 PMCID: PMC11033608 DOI: 10.1039/d4ra02616k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Accepted: 04/15/2024] [Indexed: 04/25/2024] Open
Abstract
A novel method was developed for synthesizing γ-alkyl ketones via nickel-catalyzed cross-electrophile coupling of cyclopropyl ketones and non-activated primary alkyl chlorides. High reactivity and selectivity can be achieved with sodium iodide as a crucial cocatalyst that generates a low concentration of alkyl iodide via halide exchange, thus avoiding the formation of alkyl dimers. This reaction possessed excellent regioselectivity and high step economy circumventing in situ or pregenerated organometallics.
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Affiliation(s)
- Zheng-Ying Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University Liaocheng 252000 P. R. China
| | - Shi-Zheng Liu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University Liaocheng 252000 P. R. China
| | - Cong Guo
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University Liaocheng 252000 P. R. China
| | - Yi-Zheng Cheng
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University Liaocheng 252000 P. R. China
| | - Qiang Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University Liaocheng 252000 P. R. China
| | - Jianmin Dou
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University Liaocheng 252000 P. R. China
| | - Dacheng Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University Liaocheng 252000 P. R. China
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3
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Zeng M, Chen JL, Luo X, Zou YJ, Liu ZN, Dai J, Jiang DZ, Li JJ. Oxygen-Free Csp 3-H Oxidation of Pyridin-2-yl-methanes to Pyridin-2-yl-methanones with Water by Copper Catalysis. Molecules 2023; 28:7587. [PMID: 38005308 PMCID: PMC10673412 DOI: 10.3390/molecules28227587] [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: 10/12/2023] [Revised: 11/03/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Aromatic ketones are important pharmaceutical intermediates, especially the pyridin-2-yl-methanone motifs. Thus, synthetic methods for these compounds have gained extensive attention in the last few years. Transition metals catalyze the oxidation of Csp3-H for the synthesis of aromatic ketones, which is arresting. Here, we describe an efficient copper-catalyzed synthesis of pyridin-2-yl-methanones from pyridin-2-yl-methanes through a direct Csp3-H oxidation approach with water under mild conditions. Pyridin-2-yl-methanes with aromatic rings, such as substituted benzene, thiophene, thiazole, pyridine, and triazine, undergo the reaction well to obtain the corresponding products in moderate to good yields. Several controlled experiments are operated for the mechanism exploration, indicating that water participates in the oxidation process, and it is the single oxygen source in this transformation. The current work provides new insights for water-involving oxidation reactions.
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Affiliation(s)
- Ming Zeng
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China; (M.Z.)
| | - Jia-Le Chen
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China; (M.Z.)
| | - Xue Luo
- College of Pharmacy, Jiamusi University, Jiamusi 154007, China; (X.L.)
| | - Yan-Jiao Zou
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China; (M.Z.)
| | - Zhao-Ning Liu
- College of Pharmacy, Jiamusi University, Jiamusi 154007, China; (X.L.)
| | - Jun Dai
- Analytical and Testing Center, Jiujiang University, Jiujiang 332005, China
| | - Deng-Zhao Jiang
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China; (M.Z.)
- Jiujiang Key Laboratory for the Development and Utilization of Traditional Chinese Medicine Resources in Northwest Jiangxi, Jiujiang 332005, China
| | - Jin-Jing Li
- College of Pharmacy, Jiamusi University, Jiamusi 154007, China; (X.L.)
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4
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Zeng M, Yuan ZX, Wen LF, Jiang D, Lu H, Liu W, Dai J, Zeng SX. The copper-catalyzed oxidation of arylmethyl triazines with H 2O toward the oxidant-free synthesis of aroyl triazines. Org Biomol Chem 2022; 20:5406-5411. [PMID: 35521790 DOI: 10.1039/d2ob00582d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We report an efficient copper-catalyzed dehydrogenation method for the synthesis of aroyl triazines from arylmethyl triazines with water in the absence of additional oxidants or hydrogen acceptors. The use of substrates with both electron-donating and electron-withdrawing groups resulted in moderate to good yields. Using liquid chromatography-mass spectrometry, 18O-labeled-water reactions and hydrogen capture experiments confirmed that water was the only oxygen donor and hydrogen was the by-product. This oxidation strategy provides a new approach for the synthesis of aroyl triazines with a broad substrate scope.
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Affiliation(s)
- Ming Zeng
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China.
| | - Zi-Xin Yuan
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China.
| | - Lin-Fei Wen
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China.
| | - Dengzhao Jiang
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China.
| | - Hui Lu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Wenbo Liu
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China.
| | - Jun Dai
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China.
| | - Shen-Xin Zeng
- School of Pharmacy, Hangzhou Medical College, Hangzhou, 311399, China.
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5
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Zeng M, Liu YX, Zheng JH, Zhao L, Zhu QH, Jiang D, Ling Y, Liu W, Zeng SX. Direct α-methylenation of triazines to terminal olefins with DMA. NEW J CHEM 2022. [DOI: 10.1039/d2nj04417j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We report an efficient metal (Cu or Ni)-catalysed α-methylenation of triazines to terminal olefins using DMA as a one-carbon source. Various substituted triazine derivatives are suitable for this reaction.
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Affiliation(s)
- Ming Zeng
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Yi-xuan Liu
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Jian-hui Zheng
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Lan Zhao
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Qi-han Zhu
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Dengzhao Jiang
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Yun Ling
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Wenbo Liu
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Shen-xin Zeng
- School of Pharmacy, Hangzhou Medical College, Hangzhou, 311399, China
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