1
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Zhang Z, Huang Y, Yuan Z, Xia J, Weng Z. Zirconium-Catalyzed Synthesis of 6-(Trifluoromethyl)-2 H-pyran-2-ones via C-C Bond Cleavage. J Org Chem 2024; 89:5683-5689. [PMID: 38570938 DOI: 10.1021/acs.joc.4c00227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
A strategy for the annulation reaction of alkynones with ethyl 4,4,4-trifluoro-3-oxobutanoate through C-C bond cleavage is described. The zirconium-catalyzed transformation provides access to a wide range of structurally diverse 6-(trifluoromethyl)-2H-pyran-2-ones in moderate to good yields, utilizing Na2CO3 as a base. Further transformations into trifluoromethylated arene derivatives have been demonstrated as well. Furthermore, plausible reaction pathways are proposed by conducting various control experiments and isolating a β-diketone intermediate (X-ray) containing an intramolecular hydrogen bond.
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Affiliation(s)
- Zipeng Zhang
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Yangjie Huang
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Zihang Yuan
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Jianrong Xia
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Zhiqiang Weng
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350108, China
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2
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Huang Y, You C, Hong B, Han X, Weng Z. One-Pot Assembly of 2-Trifluoromethyl Benzothiazole and Benzoselenazole via Copper-Mediated Three-Component Cascade Reaction. Chem Asian J 2024:e202400331. [PMID: 38576218 DOI: 10.1002/asia.202400331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 04/04/2024] [Indexed: 04/06/2024]
Abstract
A domino one-pot synthesis of 2-(trifluoromethyl) benzothiazole via copper-mediated three-component cascade reaction starting from the easily accessible starting materials such as o-iodoanilines, methyl trifluoropyruvate, and elemental sulfur is reported. The present strategy displayed a comprehensive substrate scope and good functional group tolerance and enabled access to a variety of substituted 2-(trifluoromethyl) benzothiazoles. A 2-(trifluoromethyl) benzoselenazole has also been synthesized utilizing this reaction methodology.
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Affiliation(s)
- Yangjie Huang
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Chenhui You
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Biqiong Hong
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Xiaoyan Han
- Testing and Analysis Center, Soochow University, Suzhou, 215123, China
| | - Zhiqiang Weng
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
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3
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Wu W, Zhang Z, Li J, Xia J, Han X, Weng Z. Copper Loading-Controlled Selective Synthesis of 2,5-Bis(trifluoromethyl) and Monotrifluoromethyl-Substituted Oxazoles. J Org Chem 2024; 89:589-598. [PMID: 38149374 DOI: 10.1021/acs.joc.3c02315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
A general domino annulation reaction of sulfonylmethyl isocyanide with trifluoroacetic anhydride in the presence of copper chloride as an additive is developed. The reaction affords 2,5-bis(trifluoromethyl)oxazoles in modest to good yields under mild conditions. A wide variety of sulfonylmethyl isocyanide and perfluorocarboxylic anhydride substrates are amenable to this transformation. Under a higher copper salt loading conditions, the reaction led to the formation of monotrifluoromethyl-substituted oxazole product.
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Affiliation(s)
- Wei Wu
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Zipeng Zhang
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Jialong Li
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Jianrong Xia
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Xiaoyan Han
- Testing and Analysis Center, Soochow University, Suzhou 215123, China
| | - Zhiqiang Weng
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350108, China
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4
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Lin B, Yao Y, Wu M, Qin L, Chen S, You Y, Weng Z. Synthesis of 2-trifluoromethyl benzimidazoles, benzoxazoles, and benzothiazoles via condensation of diamines or amino(thio)phenols with CF 3CN. Org Biomol Chem 2023. [PMID: 37232023 DOI: 10.1039/d3ob00517h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A new and efficient method is developed for the synthesis of 2-trifluoromethyl benzimidazoles, benzoxazoles, and benzothiazoles in good to excellent yields by the condensation of diamines or amino(thio)phenols with in situ generated CF3CN. Additionally, the synthetic utility of the 2-trifluoromethyl benzimidazole and benzoxazole products is demonstrated via gram scale synthesis. The mechanistic study suggests that the reaction proceeds via the nucleophilic addition of trifluoroacetonitrile to the amino group of the diamine derivatives to form an imidamide intermediate, followed by intramolecular cyclization.
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Affiliation(s)
- Bo Lin
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350108, China.
| | - Yunfei Yao
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350108, China.
| | - Minze Wu
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University Fuzhou, 350108, China.
| | - Lu Qin
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University Fuzhou, 350108, China.
| | - Shouxiong Chen
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University Fuzhou, 350108, China.
| | - Yi You
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350108, China.
| | - Zhiqiang Weng
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350108, China.
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University Fuzhou, 350108, China.
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5
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Hong B, Lin B, Yao Y, Li S, Weng Z. Synthesis of 3-substituted 2-trifluomethyl imidazo[1,2-a]pyridine through [3+2] cycloaddition of pyridinium ylide with trifluoroacetonitrile. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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6
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Wang Z, Li X, Qiu J, Li W, Li H, Weng Z, Li H. Modular Access to 2-(Trifluoromethyl)pyrazolo[1,5- a]pyridines and Their Benzo Analogues through a Copper(I)-Catalyzed Radical Annulation. Org Lett 2022; 24:6292-6297. [PMID: 36005387 DOI: 10.1021/acs.orglett.2c02500] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A mechanistically distinctive copper-catalyzed radical annulation to valuable 2-(trifluoromethyl)pyrazolo[1,5-a]pyridines and their benzo analogues has been described for the first time. Notably, the newly developed complementary process allows the synthesis of 4- or 6-substituted target molecular entities as a single product, which was previously challenging to access by existing methods. The utility of this process is further demonstrated by the facile construction of four different ring systems, a gram-scale synthesis, and the late-stage functionalization of bioactive molecules.
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Affiliation(s)
- Zhenhui Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Xiaofeng Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jie Qiu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Wei Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Hengyuan Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Zhiqiang Weng
- Fujian Engineering Research Center of New Chinese Lacquer Material, Ocean College, Minjiang University, Fuzhou 350108, China
| | - Huaifeng Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
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7
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Teng Y, Fang T, Lin Z, Qin L, Jiang M, Wu W, You Y, Weng Z. Ring-expansion reaction for the synthesis of 2-(trifluoromethyl)oxazoles and 3-(trifluoromethyl)-1,2,4-triazines. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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8
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Fang Z, Teng Y, Yang H, Li R, Li Q, You Y, Weng Z. Synthesis of 4-trifluoromethyl pyridazines via annulation of pyridinium ylides with trifluoroacetyl diazoester. Org Biomol Chem 2022; 20:3564-3569. [PMID: 35420110 DOI: 10.1039/d2ob00483f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A base promoted annulation of pyridinium ylides with trifluoroacetyl diazoester has been reported. Highly functionalized 4-trifluoromethyl pyridazines were synthesized in good yields without the use of any heavy metal catalysts. The developed methodology was compatible with a variety of important functional groups. Mechanistic studies revealed that trifluoroacetylated hydrazone was an active intermediate of this three-component annulation. Synthetic versatility of the method via aminolysis and condensation toward amide- and pyridazino[4,5-c]pyridazine-derivatives has been showcased.
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Affiliation(s)
- Zheng Fang
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou 350108, China.
| | - Yun Teng
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou 350108, China.
| | - Huilin Yang
- Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China.
| | - Rongxing Li
- Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China.
| | - Qiuhong Li
- Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China.
| | - Yi You
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou 350108, China.
| | - Zhiqiang Weng
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou 350108, China. .,Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China.
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9
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Abstract
The preparation of 2,2,2-trifluoroacetaldehyde O-(aryl)oxime, a previously inaccessible precursor of trifluoroacetonitrile, via reaction of hydroxylamine and trifluoroacetaldehyde hydrate is reported. This precursor released CF3CN in quantitative yield under mildly basic conditions. The precursor was successfully used in the synthesis of trifluoromethylated oxadiazoles. The facile, cost-effective, scalable, and recyclable procedure makes these trifluoroacetonitrile precursors generally applicable.
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Affiliation(s)
- Bo Lin
- Fujian Engineering Research Center of New Chinese Lacquer Material, Ocean College, Minjiang University, Fuzhou 350108, China.,Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Yunfei Yao
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
| | - Yangjie Huang
- Fujian Engineering Research Center of New Chinese Lacquer Material, Ocean College, Minjiang University, Fuzhou 350108, China
| | - Zhiqiang Weng
- Fujian Engineering Research Center of New Chinese Lacquer Material, Ocean College, Minjiang University, Fuzhou 350108, China.,Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China
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10
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Wang H, Yao Y, Zhang Z, Huang Y, Weng Z. Synthesis of 2,3-Bis(trifluoromethylseleno) Indoles through an Oxidative Copper-Mediated Domino Reaction. J Org Chem 2022; 87:3605-3612. [PMID: 35166556 DOI: 10.1021/acs.joc.1c03156] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
An oxidative copper-mediated double trifluoromethylselenolation of terminal 2-alkynylanilines using [(bpy)CuSeCF3]2 is reported, providing a moderately efficient and convenient approach to 2,3-bis(trifluoromethylseleno)indoles. Mechanistic studies show that a cascade sequence of oxidation, trifluoromethylselenolation, 5-endo-dig cyclization, and elimination is involved in this transformation.
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Affiliation(s)
- Hui Wang
- Fujian Engineering Research Center of New Chinese Lacquer Material, Ocean College, Minjiang University, Fuzhou 350108, China.,Key Laboratory of Molecule Synthesis and Function Discovery and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Yunfei Yao
- Key Laboratory of Molecule Synthesis and Function Discovery and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Zipeng Zhang
- Key Laboratory of Molecule Synthesis and Function Discovery and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Yangjie Huang
- Fujian Engineering Research Center of New Chinese Lacquer Material, Ocean College, Minjiang University, Fuzhou 350108, China
| | - Zhiqiang Weng
- Fujian Engineering Research Center of New Chinese Lacquer Material, Ocean College, Minjiang University, Fuzhou 350108, China.,Key Laboratory of Molecule Synthesis and Function Discovery and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou 350108, China
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11
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Yao Y, Lin B, Wu M, Zhang Y, Huang Y, Han X, Weng Z. Synthesis of 2-trifluoromethyl thiazoles via [3 + 2] cycloaddition of pyridinium 1,4-zwitterionic thiolates with CF 3CN. Org Biomol Chem 2022; 20:8761-8765. [DOI: 10.1039/d2ob01749k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A [3 + 2] cycloaddition of pyridinium 1,4-zwitterionic thiolates with CF3CN for the synthesis of 2-trifluoromethyl 4,5-disubstituted thiazoles is reported.
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Affiliation(s)
- Yunfei Yao
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Bo Lin
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Minze Wu
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Yafang Zhang
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Yangjie Huang
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Xiaoyan Han
- Testing and Analysis Center, Soochow University, Suzhou 215123, China
| | - Zhiqiang Weng
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
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12
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Lin B, Yao Y, Huang Y, Lin Q, Weng Z. Regioselective synthesis of 3-trifluoromethyl 1,2,4-triazoles via photocycloaddition of sydnone with CF 3CN. Chem Commun (Camb) 2022; 58:12224-12227. [DOI: 10.1039/d2cc03928a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A photocycloaddition of sydnone with CF3CN for the regioselective synthesis of 3-trifluoromethyl 1,2,4-triazoles is reported.
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Affiliation(s)
- Bo Lin
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Yunfei Yao
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Yangjie Huang
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Qi Lin
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Zhiqiang Weng
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
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13
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Wang H, Yao Y, You Y, Huang Y, Weng Z. Aerobic copper-mediated domino process for the synthesis of 3-(trifluoromethylseleno)indoles. Org Biomol Chem 2022; 20:2115-2120. [DOI: 10.1039/d2ob00063f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An aerobic copper-mediated domino reaction for the synthesis of 3-(trifluoromethylseleno)indoles from trifluoromethylselenolation of N-Ts 2-alkynylaniline with [(bpy)CuSeCF3]2 is reported. This reaction proceeds through a sequential oxidation, alkyne coordination, and deprotonation...
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14
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You C, Huang Y, You Y, Weng Z. Copper-mediated three-component synthesis of 2-trifluoromethyl benzimidazoles. Org Chem Front 2022. [DOI: 10.1039/d2qo00285j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper-mediated three-component reaction of o-iodoanilines, anilines, and ethyl trifluoropyruvate is reported. The transformation allows diverse scopes on both o-iodoanilines and anilines delivering various 2-trifluoromethylbenzimidazole products in moderate to good...
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15
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Chen S, Wang H, Lin Q, Weng Z. Synthesis of 2-trifluoromethyl chromenes via double carbonyl–ene reaction. Org Chem Front 2022. [DOI: 10.1039/d1qo01766g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A synthesis of 2-trifluoromethyl chromenes through double carbonyl–ene reaction of o-isopropenylphenols with trifluoroacetic anhydride is reported.
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Affiliation(s)
- Shouxiong Chen
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Hui Wang
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Qi Lin
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Zhiqiang Weng
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
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16
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Demuyakor A, Hu S, Koniaeva E, Liu M, Weng Z, Zhao C, Feng X, He L, Xu Y, Zeng M, Meng W, Yi B, Qin Y, Jia H, Bo Y. Impact of nodular calcification on the outcomes of patients with acute coronary syndrome (ACS) treated with primary percutaneous coronary intervention (PCI). Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Calcified plaque is thought to adversely impact clinical outcomes but the impact of nodular calcification after percutaneous coronary intervention (PCI) in patients with acute coronary syndrome (ACS) remains unclear.
Purpose
This study sought to explore the impact of nodular calcification on the outcomes of patients undergoing percutaneous coronary intervention for acute coronary syndromes.
Methods
Five-hundred culprit plaque with calcification were analysed from 495 ACS patients in whom PCI was performed. Plaques were divided into nodular calcification group (n=238) and non-nodular calcification group (n=262). Calcification is defined as an area with low back-scattering signal and a sharp border. Nodular calcification was defined as a protruding mass with an irregular surface, high backscattering, and signal attenuation on optical coherence tomography (OCT).
Results
Patients with nodular calcification were older (p<0.001) and had lower left ventricular ejection fraction (p=0.006) compared to patients with non-nodular calcification. Lesion length (31 (25.2, 38.5) vs. 29 (22.8, 34.1), p<0.001) was longer in plaques with nodular calcification. A higher prevalence of superficial calcium (p<0.001) was observed in plaques with nodular calcification compared with non-nodular calcification group. Minimum stent area (MSA) (5.0 (3.9, 6.3) vs. 5.4 (4.2, 6.7), p=0.011) and stent expansion (70 (62.7, 81.8) vs. 75 (65.2, 86.6), p=0.004) were significantly smaller in the nodular calcification group than in the non-nodular calcification group. Independent predictors of nodular calcification were age (p<0.001) lesion length (p=0.002) and calcium depth (p<0.001).
Conclusion
This study demonstrated that the presence of nodular calcification is associated with unfavourable outcomes with smaller minimum stent area and higher incidence of stent under expansion in patients with ACS treated with primary PCI.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- A Demuyakor
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - S Hu
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - E Koniaeva
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - M Liu
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - Z Weng
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - C Zhao
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - X Feng
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - L He
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - Y Xu
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - M Zeng
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - W Meng
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - B Yi
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - Y Qin
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - H Jia
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - Y Bo
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
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17
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He L, Xu Y, Hu S, Qin Y, Weng Z, Feng X, Zhao C, Zeng M, Chen X, Yi B, Xie C, Zhang D, Hou J, Jia H, Yu B. Frequency and predictors of thin-cap fibroatheroma progression: a comprehensive and dynamic in-vivo OCT study. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Purpose
To assess the evolution of thin-cap fibroatheroma (TCFA) and to explore predictors for its progression by using optical coherence tomography (OCT) in patients with acute coronary syndrome (ACS).
Methods
We enrolled ACS patients with non-culprit TCFA at baseline and corresponding OCT images at follow-up of 9 to 15 months. Clinical, angiographic and OCT data were collected and analyzed according to established methods. TCFA was defined as a lipid plaque with maximum lipid arc >90° and fibrous cap thickness <65μm. Considering the resolution of OCT, the regression of TCFA was defined as an increase of fibrous cap thickness >10μm. Inversely, TCFA progression was defined as a decrease, constant or ≤10μm increase of fibrous cap thickness.
Results
41 patients with 55 non-culprit TCFAs were taken into final analysis. 17 patients (41.5%) had patient-level progression and 22 TCFAs (40.0%) progressed at plaque-level with a median follow-up duration of 371 days. 11 (20.0%) of the 55 TCFAs happened subclinical rupture at follow-up, including 10 with the formation a new layer and 1 without the detection of the new layer. Besides, another patient suffered re-myocardial infarction because of the rupture of TCFA induced acute thrombosis and lumen occlusion during follow-up. The baseline clinical and angiographic characteristics were similar between the two cohorts. The progression group had a significantly higher prevalence of macrophage infiltration and vasa vasorum at baseline than the non-progression group (Figure 1). Multivariate analysis identified macrophage infiltration (odds ratio [OR]: 5.30; 95% confidence interval [CI]: 1.01 to 27.91; p=0.049]) as the independent predictor of TCFA progression. When it came to the evolution of lesion morphology and lipid components, the progression cohort had a higher percent change of lumen stenosis and lipid length (Figure 2).
Conclusions
About 40% of non-culprit TCFAs in ACS patients progressed in fibrous cap thickness at a median interval of 1 year. Macrophage infiltration was the independent predictor of non-culprit TCFA progression. The progression of fibrous cap thickness was usually accompanied with an aggressive evolution of other lesion characteristics.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): the National Key R&D Program of China Baseline OCT characteristicsPercent change of lesion morphology
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Affiliation(s)
- L He
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - Y Xu
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - S Hu
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - Y Qin
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - Z Weng
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - X Feng
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - C Zhao
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - M Zeng
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - X Chen
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - B Yi
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - C Xie
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - D Zhang
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - J Hou
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - H Jia
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - B Yu
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
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18
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Zhao C, Hu S, Weng Z, Chen X, Zeng M, He L, Feng X, Xu Y, Ren X, Yu H, Li L, Zhang S, Hou J, Jia H, Yu B. Prevalence, predictors, and clinical prognosis of macrophage infiltrates in patients with ST-segment elevation myocardial infarction caused by plaque erosion as assessed by OCT. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Autopsy series showed that one of most common plaque phenotypes underlying coronary thrombi was plaque erosion. Identification of erosion may permit a less invasive management. Chronic inflammation is a common process in atherosclerosis. The severity of plaque inflammation can be assessed by optical coherence tomography (OCT) defined macrophages density. The impact of macrophage infiltrates (MØI) in ST-segment elevation myocardial infarction (STEMI) patients caused by plaque erosion was still unknown.
Purpose
The aim of this study was to evaluate plaque morphology and clinical prognosis associated with MØI as assessed by optical coherence tomography in STEMI patients caused by plaque erosion.
Methods
From October 2014 to December 2017, 1561 STEMI with OCT imaging before percutaneous coronary intervention were enrolled in this study. Finally, 312 STEMI patients caused by plaque erosion were split into two group according to the presence of MØI in culprit eroded plaques.
Results
163 (52.2%) STEMI patients presented plaque erosion with MØI, whereas 149 (47.8%) patients had no evidence of MØI. MØI were more frequency appeared in older patients (p=0.015). The severity and vulnerability of culprit lesions were higher in patients with MØI characterized by more aggressive and vulnerable features. Patients with MØI had worse long-term prognosis, compared with patient without MØI, mainly driven by a higher rate of target lesion revascularization (p=0.046), especially in STEMI patients presented plaque erosion with intensive antiplatelet therapy (p=0.035).
Conclusions
In the present study, we demonstrated that macrophage infiltrates at the site of erode plaques were associated with severity and vulnerability of culprit lesions. The long-term prognosis in patients with MØI were poorer especially in patients without stent implantation.
Funding Acknowledgement
Type of funding sources: None. Study flow chartPredictors of plaque erosion with MØI
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Affiliation(s)
- C Zhao
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - S Hu
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Z Weng
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - X Chen
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - M Zeng
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - L He
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - X Feng
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Y Xu
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - X Ren
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - H Yu
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - L Li
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - S Zhang
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - J Hou
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - H Jia
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - B Yu
- The Second Affiliated Hospital of Harbin Medical University, Harbin, China
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19
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Zeng M, Hu S, Meng W, Zhao C, Wang S, Weng Z, He L, Qin Y, Feng X, Chen X, Xu Y, Yi B, Jia H, Yu B. Gender-specific difference of clinical and plaque characteristics in myocardial infarction with non-obstructive artery (MINOCA): insights from optical coherence tomography. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
To date, sparse data are available with regard to gender differences in coronary plaque morphology and composition as underlying mechanism of MINOCA.
Purpose
To assess the differences in coronary plaque morphology in culprit lesion between women and men with MINOCA using intravascular optical coherence tomography.
Methods
Totally, 7404 consecutives acute myocardial infarction patients who underwent emergency coronary angiography between 2016 and 2019 were screened. MINOCA were identified in 292 patients (mean age: 72.6% male, 54.1% with ST-segment elevation). Optical coherence tomography was performed in 190 patients (men, n=142).
Results
Women with MINOCA were older (62.5±10.6 vs. 54.0±11.5, P<0.001) and more over 55 years (75.3% vs. 43.6%, P<0.001). Although women with MINOCA more frequently presented with NSTEMI (56.8% vs. 41.7%, P=0.025) and prior coronary artery disease (CAD) (33.3% vs. 6.3%, P<0.001), they were less likely smoker (27.2% vs. 58.8%, P<0.001). There was no significant difference in incidence of plaque rupture, erosion and calcified nodule between men and women. However, women were more likely to have thin-cap fibroatheroma (TCFA) (39.6% vs. 22.5%, P=0.025).
Conclusion
Women with MINOCA were older, more frequently presented with NSTEMI and less smoking compared to men. Besides, more TCFA were observed in women.
Funding Acknowledgement
Type of funding sources: None. Clinical and OCT plaque profilesProportion of clinical and OCT profiles
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Affiliation(s)
- M Zeng
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - S Hu
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - W Meng
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - C Zhao
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - S Wang
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Z Weng
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - L He
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Y Qin
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - X Feng
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - X Chen
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Y Xu
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - B Yi
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - H Jia
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - B Yu
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
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20
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Abstract
An efficient and regioselective synthesis of highly substituted 2-trifluoromethyl pyrrole derivatives via silver-catalyzed cyclization of vinyl azides with ethyl 4,4,4-trifluoro-3-oxobutanoate is reported. Various α-(heteo)aryl, alkyl, β-aryl, as well as α,β-disubstituted vinyl azides, participate in this transformation. The reaction mechanism likely involves the addition of in situ generated 2H-azirine to the diketone species, followed by intramolecular addition, N-C1 cleavage, and elimination.
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Affiliation(s)
- Wei Wu
- Fujian Engineering Research Center of New Chinese lacquer Material, Ocean College, Minjiang University, Fuzhou, 350108, China
| | - Shunli Wen
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Xinyu Zhang
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Qi Lin
- Fujian Engineering Research Center of New Chinese lacquer Material, Ocean College, Minjiang University, Fuzhou, 350108, China
| | - Zhiqiang Weng
- Fujian Engineering Research Center of New Chinese lacquer Material, Ocean College, Minjiang University, Fuzhou, 350108, China
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21
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Zhang X, Wang H, Xie L, You C, Han X, Weng Z. Copper-Catalyzed Synthesis of 5-Aryl-6-(Trifluoromethyl)-2,3-Dihydropyrazolo[1,2-a]Pyrazol-1(5H)-One. Chem Asian J 2021; 16:2669-2673. [PMID: 34313007 DOI: 10.1002/asia.202100693] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/20/2021] [Indexed: 11/11/2022]
Abstract
An efficient protocol for the synthesis of 5-aryl-6-(trifluoromethyl)-2,3-dihydropyrazolo[1,2-a]pyrazol-1(5H)-one derivatives through a copper-catalyzed [3+2]-cycloaddition of azomethine imines with 3,3,3-trifluoropropyne (generated in situ from dehydrobromination of 2-bromo-3,3,3-trifluoropropene under base conditions) is developed. The advantages of this transformation are the broad substrate scope and the good functional group compatibility. The subsequent oxidation and nucleophilic substitution/aromatization provide a new approach to 4-trifluoromethylated pyrazol-1-yl propanoic acids.
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Affiliation(s)
- Xinyu Zhang
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Hui Wang
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Lili Xie
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Chenhui You
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Xiaoyan Han
- Testing and Analysis Center, Soochow University, Suzhou, 215123, P. R. China
| | - Zhiqiang Weng
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
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22
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Chen H, Wen S, Cui Y, Lin L, Zhang H, Fang Z, You Y, Weng Z. A method for synthesis of polysubstituted 4-difluoromethyl and perfluoroalkyl pyrazoles. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Abstract
A method for copper-catalyzed synthesis of 2-trifluoroethyl-substituted benzofurans and indoles from the reaction of salicylaldehyde/2-aminobenzaldehyde p-tosylhydrazones with 2-bromo-3,3,3-trifluoropropene has been developed.
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Affiliation(s)
- Wei Wu
- Key Laboratory of Molecule Synthesis and Function Discovery
- and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Beibei Luo
- Key Laboratory of Molecule Synthesis and Function Discovery
- and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yi You
- Key Laboratory of Molecule Synthesis and Function Discovery
- and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Zhiqiang Weng
- Key Laboratory of Molecule Synthesis and Function Discovery
- and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
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25
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Abstract
In this account, we summarize recent work on the direct introduction of the SCF3 group by using [(bpy)CuSCF3] as trifluoromethylthiolating reagent. A number of efficient and convenient strategies have been disclosed for the synthesis of trifluoromethylthiolated compounds, including trifluoromethylthiolation of aryl, alkenyl, and alkyl halides, and arylboronic acids. These reactions afford various trifluoromethyl sulfides in good yields.1 Introduction2 Synthesis of [(bpy)CuSCF3]3 Trifluoromethylthiolation of Aryl Halides4 Trifluoromethylthiolation of Alkenyl Halides5 Trifluoromethylthiolation of Alkyl Halides6 Miscellaneous7 Conclusion
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Affiliation(s)
- Qi Lin
- Fujian Engineering Research Center of New Chinese lacquer Material, Ocean College, Minjiang University
| | - Zhiqiang Weng
- Fujian Engineering Research Center of New Chinese lacquer Material, Ocean College, Minjiang University
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University
| | - Yangjie Huang
- Fujian Engineering Research Center of New Chinese lacquer Material, Ocean College, Minjiang University
| | - Mengjia Zhang
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University
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26
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Fang Z, Yin H, Lin L, Wen S, Xie L, Huang Y, Weng Z. Collaborative Activation of Trifluoroacetyl Diazoester by a Lewis Acid and Base for the Synthesis of Polysubstituted 4-Trifluoromethylpyrazoles. J Org Chem 2020; 85:8714-8722. [DOI: 10.1021/acs.joc.0c00737] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Zheng Fang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Hongshan Yin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Lu Lin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Shunli Wen
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Lili Xie
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Yangjie Huang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
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27
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Yuan Z, Chen S, Weng Z. Copper-catalyzed synthesis of trifluoromethylated bis(indolyl)arylmethanes from 2-arylindoles and 2,2,2-trifluoroacetohydrazide. Org Chem Front 2020. [DOI: 10.1039/c9qo01131e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper-catalyzed synthesis of trifluoromethylated bis(indolyl)arylmethanes via reaction of 2-arylindoles with 2,2,2-trifluoroacetohydrazide was developed.
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Affiliation(s)
- Zihang Yuan
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Shouxiong Chen
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
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28
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Wu W, Chen Q, Tian Y, Xu Y, Huang Y, You Y, Weng Z. Synthesis of polysubstituted 5-trifluoromethyl isoxazoles via denitrogenative cyclization of vinyl azides with trifluoroacetic anhydride. Org Chem Front 2020. [DOI: 10.1039/d0qo00243g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A general method for the synthesis of 5-(trifluoromethyl)isoxazoles by denitrogenative cyclization of vinyl azides with trifluoroacetic anhydride has been developed.
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Affiliation(s)
- Wei Wu
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Qiaoling Chen
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yishi Tian
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yihui Xu
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yangjie Huang
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yi You
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment
- and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
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29
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30
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Wu W, Han X, Weng Z. Synthesis of pertrifluoromethyl pyridazine derivatives via a tandem reaction of aryldiazonium salts with hexafluoroacetylacetone. Org Chem Front 2020. [DOI: 10.1039/d0qo00955e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A method for the synthesis of pertrifluoromethyl pyridazine derivatives by the condensation of arenediazonium salts with hexafluoroacetylacetone has been developed.
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Affiliation(s)
- Wei Wu
- Key Laboratory of Molecule Synthesis and Function Discovery
- and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Xiaoyan Han
- Testing and Analysis Center
- Soochow University
- Suzhou 215123
- China
| | - Zhiqiang Weng
- Key Laboratory of Molecule Synthesis and Function Discovery
- and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
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31
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Wang J, Chen S, Wu W, Wen S, Weng Z. Base-Mediated Tunable Synthesis of 2-Trifluoromethylated Furans and Dihydrofuranols: Extraordinary Stable in Sulfuric Acid. J Org Chem 2019; 84:15685-15696. [PMID: 31696702 DOI: 10.1021/acs.joc.9b02326] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
2-Trifluoromethylated furans and dihydrofuranols were tunably synthesized from the cyclization of β-ketonitriles with 3-bromo-1,1,1-trifluoroacetone mediated by bases. In addition, dehydration of dihydrofuranol compounds with concentrated sulfuric acid gave another 2-(trifluoromethyl)furans isomer. The developed methodology exhibits an excellent functional group tolerance for both aromatic and aliphatic β-ketonitriles.
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Affiliation(s)
- Junwen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry , Fuzhou University , Fujian 350108 , China
| | - Shouxiong Chen
- State Key Laboratory of Photocatalysis on Energy and Environment, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry , Fuzhou University , Fujian 350108 , China
| | - Wei Wu
- State Key Laboratory of Photocatalysis on Energy and Environment, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry , Fuzhou University , Fujian 350108 , China
| | - Shunli Wen
- State Key Laboratory of Photocatalysis on Energy and Environment, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry , Fuzhou University , Fujian 350108 , China
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry , Fuzhou University , Fujian 350108 , China
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Zhao Y, Liu Y, Wang Z, Wang L, Li L, Hou F, Song Z, Weng Z. Study of SU-8 photoresist cross-linking process by atomic force acoustic microscopy. J Microsc 2019; 276:136-144. [PMID: 31769508 DOI: 10.1111/jmi.12848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 11/18/2019] [Accepted: 11/21/2019] [Indexed: 11/30/2022]
Abstract
In this paper, a method is presented to detect the different phases of epoxy cross-linking process and the subsurface structures of SU-8 thin films by atomic force acoustic microscopy (AFAM). The AFAM imaging of SU-8 thin films was investigated under different exposure and bake conditions. Optimized conditions were obtained for the cross-linking of SU-8 thin film at the exposure does of eight laser pulses with the laser fluence 10 mJ cm-2 per pulse and the post exposure bake (PEB) time at 90 s. The subsurface structures of undeveloped SU-8 thin films were visible in the AFAM images. This method provides an effective and low-cost way for the determination of different phases of epoxy cross-linking process in nanostructured compounds, for the non-destructive testing of subsurface defects, and for the evaluation of the quality of patterned structures.
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Affiliation(s)
- Y Zhao
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China.,International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China
| | - Y Liu
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China.,International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China
| | - Z Wang
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China.,International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China.,JR3CN & IRAC, University of Bedfordshire, Luton, UK
| | - L Wang
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China.,International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China
| | - L Li
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China.,International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China
| | - F Hou
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China.,International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China
| | - Z Song
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China.,International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China
| | - Z Weng
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, China.,International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China
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Abstract
A double nucleophilic addition-cyclization-elimination cascade is developed, that allows various 2,6-diaryl-4-perfluoroalkylpyridines to be synthesized in one step from easily available enamides and perfluorocarboxylic anhydrides. The procedure is also operationally simple and scalable and provides access to the facial construction of 4-fluoroalkylpyridines, which are of great interest in medicinal chemistry.
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Affiliation(s)
- Zeng Wang
- State Key Laboratory of Photocatalysis on Energy and Environment and Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry , Fuzhou University , Fujian 350108 , China
| | - Chenhui You
- State Key Laboratory of Photocatalysis on Energy and Environment and Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry , Fuzhou University , Fujian 350108 , China
| | - Changfang Wang
- Institute of Plant Protection , Fujian Academy of Agricultural Sciences , Fuzhou 350013 , China
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment and Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry , Fuzhou University , Fujian 350108 , China
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35
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You Y, Chen Y, You C, Wang J, Weng Z. Synthesis of 3-(tri/difluoromethyl)-1H-1,2,4-triazol-5(4H)-ones via the cyclization of hydrazinecarboxamides with tri/difluoroacetic anhydride. Org Biomol Chem 2019; 17:9343-9347. [PMID: 31612898 DOI: 10.1039/c9ob01865d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
An efficient method for the synthesis of structurally diverse 4-aryl-3-(tri/difluoromethyl)-1H-1,2,4-triazol-5(4H)-ones through the cyclization of hydrazinecarboxamides with tri/difluoroacetic anhydride is presented. The method is simple and environmentally benign, providing tri/difluoromethylated 1,2,4-triazol-5(4H)-ones in moderate-to-good yields. A mechanism is proposed to proceed via a tandem reaction of tri/difluoroacetylation, nucleophilic addition and water elimination. Some of these compounds exhibit promising insecticidal activities.
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Affiliation(s)
- Yi You
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350108, China.
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Affiliation(s)
- Mengjia Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
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Wu CK, Weng Z, Yang DY. One-Pot Construction of 1-Phenylchromeno[3,4- b]pyrrol-4(3 H)-one: Application to Total Synthesis of Ningalin B and a Pyrrolocoumarin-Based Electrochromic Switch. Org Lett 2019; 21:5225-5228. [PMID: 31247749 DOI: 10.1021/acs.orglett.9b01830] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An efficient construction of 1-phenylchromeno[3,4- b]pyrrol-4(3 H)-one via coupling of 1-styrylpyrrolidine and 4-chloro-3-nitrocoumarin as a key step is reported. This reaction is further applied to the total synthesis of the natural product ningalin B in five linear steps with an overall yield of 41.5% and a pyrrolocoumarin-based electrochromic switch.
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Affiliation(s)
- Chun-Ku Wu
- Department of Chemistry, College of Science , Tunghai University , Taichung 40704 , Taiwan
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry , Fuzhou University , Fujian 350108 , China
| | - Ding-Yah Yang
- Department of Chemistry, College of Science , Tunghai University , Taichung 40704 , Taiwan
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Lu J, Man Y, Zhang Y, Lin B, Lin Q, Weng Z. Copper-catalyzed chemoselective synthesis of 4-trifluoromethyl pyrazoles. RSC Adv 2019; 9:30952-30956. [PMID: 35529353 PMCID: PMC9072218 DOI: 10.1039/c9ra07694h] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 09/24/2019] [Indexed: 11/21/2022] Open
Abstract
A series of 4-trifluoromethyl pyrazoles have been prepared via the copper-catalyzed cycloaddition of 2-bromo-3,3,3-trifluoropropene with a variety of N-arylsydnone derivatives under mild conditions. This new protocol under optimized reaction conditions [Cu(OTf)2/phen, DBU, CH3CN, 35 °C] afforded 4-trifluoromethyl pyrazoles in moderate to excellent yields with excellent regioselectivity. A copper-catalyzed chemoselective synthesis of 4-trifluoromethyl pyrazoles via cycloaddition of 2-bromo-3,3,3-trifluoropropene with N-arylsydnones has been developed.![]()
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Affiliation(s)
- Jiaqing Lu
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Yuning Man
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Yabin Zhang
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Bo Lin
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Qi Lin
- Ocean College
- Minjiang University
- Fuzhou
- China
| | - Zhiqiang Weng
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
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39
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Chen Y, You Y, Weng Z. Syntheses of 2-(2,2,2-trifluoroethylidene)/(2,2-difluoroethyl)-1,3-dicarbonyl compounds and their fungicidal activities. Org Chem Front 2019. [DOI: 10.1039/c8qo01118d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A Knoevenagel-type reaction of 1,3-diketone substrates with trifluoroacetic/difluoroacetic anhydride for the synthesis of 2-(2,2,2-trifluoroethylidene)/(2,2-difluoroethyl)-1,3-dicarbonyl compounds has been developed.
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Affiliation(s)
- Yueji Chen
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou
- 350108
| | - Yi You
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou
- 350108
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou
- 350108
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40
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Li Z, Dong J, Wang J, Yang DY, Weng Z. Elemental sulfur-promoted one-pot synthesis of 2-(2,2,2-trifluoroethyl)benzoxazoles and their derivatives. Chem Commun (Camb) 2019; 55:13132-13135. [DOI: 10.1039/c9cc06822h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An elemental sulfur promoted one-pot synthesis of 2-(2,2,2-trifluoroethyl)benzoxazole derivatives from the reaction of o-aminophenols, thiols, and anilines with 2-bromo-3,3,3-trifluoropropene is reported.
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Affiliation(s)
- Zhengyu Li
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Jingnan Dong
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Junwen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Ding-Yah Yang
- Department of Chemistry
- Tunghai University
- Taichung City 40704
- Taiwan
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
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41
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Wang J, Weng Z. Borrowing and Returning Oxygen Atom in Trifluoroacetic Anhydride Transfer to Nitrones: A Versatile Route for the Synthesis of N
-Trifluoroacetyl Amides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801662] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Junwen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry; Fuzhou University; 350108 Fuzhou China
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry; Fuzhou University; 350108 Fuzhou China
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42
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Abstract
A simple and efficient protocol for the copper-catalyzed synthesis of aryl or alkyl 2,2,2-trifluoroethyl selenoethers has been developed. This reaction proceeded smoothly in the presence of CuI/phen as the catalyst, with elemental selenium, 1,1,1-trifluoro-2-iodoethane, and NaBH4 as reagents in DMF with a broad scope of functionalized (hetero)aryl or alkyl halides. Different functional groups were tolerated and moderate to excellent yields of 2,2,2-trifluoroethyl selenoethers were obtained. Some of the synthesized compounds exhibited promising insecticidal activities.
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Affiliation(s)
- Jingnan Dong
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, China.
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44
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Li Z, Sun B, Gu M, Wang M, Cheng X, Lv J, Cen S, Zhang S, Dai Z, Bai Y, Li S, Wang G, Weng Z, Shi Y, Zhang Z, Liu X. A GWAS-supported variant interacting with diabetes predicts risk of atherothrombotic stroke in Han Chinese population. Int J Neurosci 2018; 129:165-170. [PMID: 30149742 DOI: 10.1080/00207454.2018.1508134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
BACKGROUND A recent genome-wide association study has identified that rs4376531 variant conferred risk of atherothrombotic stroke (AS) in a Japanese population. This study was to explore the association in Han Chinese population. METHODS A total of 1036 cases and 643 healthy controls were enrolled. We genotyped rs4376531 variant with SNPscan. Multivariate logistic regression analysis was used to determine the association of genetic variation with risk of AS. Interaction analysis was examined by SNPStats web tool. RESULTS After adjusting for gender, age, body mass index (BMI), hypertension, diabetes and smoking, compared with CC genotype, we observed that GC and GG/GC genotypes were associated with a significantly decreased risk of AS (OR = 0.76, 95% CI = 0.58-0.99 and OR = 0.76, 95% CI = 0.58-0.98, respectively). The decreased risk was more obvious among subgroups with high BMI (OR = 0.63, 95% CI = 0.45-0.88), no hypertension (OR = 0.66, 95% CI = 0.46-0.94), diabetes (OR = 0.33, 95% CI = 0.17-0.64), and smoking (OR = 0.65, 95% CI = 0.44-0.95) in the dominant model (GG/GC vs CC). Interaction analysis also revealed that compared with non-diabetic patients with CC genotype, diabetic patients with CC genotype had a 4.48-fold (OR = 4.48; 95% CI = 2.98-6.72) increased risk of AS. CONCLUSION Our data suggested that GC and GG/GC of rs4376531 contributed to a decreased risk of AS while CC genotype, interacting with diabetes, increased the stroke risk in Han Chinese population.
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Affiliation(s)
- Zibao Li
- a Department of Neurology , Jinling Clinical College of Nanjing Medical University , Nanjing , China.,b Department of Neurology , Yijishan Hospital of Wannan Medical College , Wuhu , China
| | - Bo Sun
- c Department of Neurology , Huai'an First People's Hospital, Nanjing Medical University , Huai'an , China
| | - Mengmeng Gu
- a Department of Neurology , Jinling Clinical College of Nanjing Medical University , Nanjing , China
| | - Mengmeng Wang
- d Department of Neurology, Jinling Hospital , Medical School of Nanjing University , Nanjing , China
| | - Xi Cheng
- a Department of Neurology , Jinling Clinical College of Nanjing Medical University , Nanjing , China
| | - Jia Lv
- b Department of Neurology , Yijishan Hospital of Wannan Medical College , Wuhu , China
| | - Si Cen
- b Department of Neurology , Yijishan Hospital of Wannan Medical College , Wuhu , China
| | - Shuai Zhang
- a Department of Neurology , Jinling Clinical College of Nanjing Medical University , Nanjing , China
| | - Zhengze Dai
- a Department of Neurology , Jinling Clinical College of Nanjing Medical University , Nanjing , China
| | - Yongjie Bai
- a Department of Neurology , Jinling Clinical College of Nanjing Medical University , Nanjing , China
| | - Shun Li
- d Department of Neurology, Jinling Hospital , Medical School of Nanjing University , Nanjing , China
| | - Guiling Wang
- e The Outpatient Department , Jinling Hospital, Medical School of Nanjing University , Nanjing , China
| | - Zhiqiang Weng
- e The Outpatient Department , Jinling Hospital, Medical School of Nanjing University , Nanjing , China
| | - Yonghui Shi
- f Department of Clinical Laboratory , Jinling Hospital, Medical School of Nanjing University , Nanjing , China
| | - Zhizhong Zhang
- a Department of Neurology , Jinling Clinical College of Nanjing Medical University , Nanjing , China.,d Department of Neurology, Jinling Hospital , Medical School of Nanjing University , Nanjing , China
| | - Xinfeng Liu
- a Department of Neurology , Jinling Clinical College of Nanjing Medical University , Nanjing , China.,d Department of Neurology, Jinling Hospital , Medical School of Nanjing University , Nanjing , China
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Affiliation(s)
- Zhengyu Li
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Jingnan Dong
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Zihang Yuan
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Ding-Yah Yang
- Department of Chemistry, Tunghai University, Taichung City 40704, Taiwan
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
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Cheng X, Xu J, Gu M, Wang M, Sun B, Li Z, Ni G, Wang G, Weng Z, Shi Y, Zhang Z, Liu X. Genetic variants in ALDH2 predict risk of ischemic stroke in a Chinese population. Gene 2018; 678:49-54. [PMID: 30077765 DOI: 10.1016/j.gene.2018.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 07/20/2018] [Accepted: 08/01/2018] [Indexed: 01/25/2023]
Abstract
BACKGROUND AND PURPOSE Genome-wide association studies discovered a novel correlation between chromosome 12q24 and ischemic stroke in European populations. This study aimed to determine whether two genetic variants (rs10744777 and rs886205) on chromosome 12q24 can modify the risk of ischemic stroke in Chinese population. METHODS We recruited 1195 patients with ischemic stroke and 642 healthy Chinese individuals. The rs10744777 and rs886205 polymorphisms in aldehyde dehydrogenase2 (ALDH2) was genotyped and compared using multivariate logistic regression. RESULTS The genotype of rs10744777 (CT/TT) was associated with risk of ischemic stroke in males (OR = 1.99, 95% CI = 1.15-3.42, P = 0.013). In contrast, no significant correlation was found in females. Haplotype analysis indicated that haplotype "TA" was associated with increased ischemic stroke risk (OR = 1.85, 95% CI = 1.10-3.12, P = 0.042). Further subtype analysis demonstrated that the rs10744777 (CT/TT) genotype was strongly associated with large artery atherosclerosis subtype in males (OR = 2.27, 95% CI = 1.30-3.95, P = 0.004). After three months follow-up, we found a poorer functional outcome of ischemic stroke associated with the rs886205 GA genotype (OR = 1.76, 95% CI 1.03-3.00, P = 0.057) in males. CONCLUSIONS Genetic polymorphisms in ALDH2 modified ischemic stroke risk and outcome in Chinese males, but not in females.
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Affiliation(s)
- Xi Cheng
- Department of Neurology, Jinling Clinical College of Nanjing Medical University, Nanjing 210002, Jiangsu, China; Department of Geriatrics, The First Affiliation Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China
| | - Jian Xu
- Neurology Department, Wayne State University/Detroit Medical Center, Detroit, MI 48201, USA
| | - Mengmeng Gu
- Department of Neurology, Jinling Clinical College of Nanjing Medical University, Nanjing 210002, Jiangsu, China
| | - Mengmeng Wang
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, China
| | - Bo Sun
- Department of Neurology, Jinling Clinical College of Nanjing Medical University, Nanjing 210002, Jiangsu, China
| | - Zibao Li
- Department of Neurology, Jinling Clinical College of Nanjing Medical University, Nanjing 210002, Jiangsu, China
| | - Guihua Ni
- Department of Neurology, Huai'an First People's Hospital, Huai'an, Jiangsu, China
| | - Guiling Wang
- The Outpatient Department, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, China
| | - Zhiqiang Weng
- The Outpatient Department, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, Jiangsu, China
| | - Yonghui Shi
- Department of Clinical Laboratory, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Zhizhong Zhang
- Department of Neurology, Jinling Clinical College of Nanjing Medical University, Nanjing 210002, Jiangsu, China; Department of Neurology, Jinling Hospital, Nanjing 210002, Jiangsu, China.
| | - Xinfeng Liu
- Department of Neurology, Jinling Clinical College of Nanjing Medical University, Nanjing 210002, Jiangsu, China; Department of Neurology, Jinling Hospital, Nanjing 210002, Jiangsu, China.
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47
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Affiliation(s)
- Zeng Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry; Fuzhou University; Fujian 350108 People's Republic of China
| | - Zihang Yuan
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry; Fuzhou University; Fujian 350108 People's Republic of China
| | - Xiaoyan Han
- Testing and Analysis Center; Soochow University; Suzhou 215123 People's Republic of China
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry; Fuzhou University; Fujian 350108 People's Republic of China
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48
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Abstract
Trifluoromethyl ketones have recently been attracting considerable attention because they represent powerful synthetic building blocks with potential pharmaceutical applications. This short review provides an overview of recent development in the synthesis of aryl trifluoromethyl ketones with novel reagents.1 Introduction2 Various Methods for the Synthesis of Aryl Trifluoromethyl Ketones2.1 Oxidation of Trifluoromethyl Alcohols2.2 Nucleophilic Trifluoromethylation Reactions2.3 Electrophilic-Type Reactions2.4 Recently Developed Direct Trifluoroacetylation3 Conclusions
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Affiliation(s)
- Wei Wu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University
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Yang S, Wang J, Chen F, Liu G, Weng Z, Chen J. Elevated Galectin-9 Suppresses Th1 Effector Function and Induces Apoptosis of Activated CD4 + T Cells in Osteoarthritis. Inflammation 2018; 40:1062-1071. [PMID: 28393295 DOI: 10.1007/s10753-017-0549-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
T cell immunoglobulin and mucin domain 3 (Tim-3) is a critical regulatory molecule found on activated Th1 cells, exhausted CD8+ T cells, and resting monocytes/macrophages. Galectin-9 (Gal-9) is an identified ligand for Tim-3. Interaction between Tim-3 and Gal-9 is thought to inhibit Th1 responses. The regulation and function of Tim-3 and Gal-9 in osteoarthritis (OA) have not been intensively investigated. We found that in peripheral blood, CD4+ T cells, but not CD8+ T cells or CD14+ monocytes, from OA patients presented significantly elevated Tim-3 and Gal-9 expression compared to those from healthy controls (HC). The CD4+ T cells from OA did not present altered Th1, Th2, and Th17 composition in the peripheral blood, but secreted less Th1 cytokine interleukin 2 (IL-2) and interferon gamma (IFN-γ) after activation. Further investigation demonstrated that Gal-9 induced high levels of apoptosis in activated CD4+ T cells from OA patients. Inhibition of Gal-9 resulted in significantly higher IL-2 and IFN-γ expression that was directly correlated with the number of non-apoptotic cells. In the synovial fluid, both secreted Gal-9 and surface Gal-9 levels were significantly higher in less-severe grade 2 OA patients than in more-severe grade 4 OA patients. Surface Tim-3 was also higher in synovial fluid CD8+ T cells and CD14+ monocytes from grade 2 OA patients and lower in grade 4 OA patients. Together, these results suggested that Tim-3 and Gal-9 could downregulate T cell inflammation in OA, and could be utilized as a novel therapeutic strategy.
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Affiliation(s)
- Shufeng Yang
- Department of Orthopedics, Bayi Hospital Affiliated Nanjing University of Chinese Medicine, 34 Yanggongjing Road, Nanjing, Jiangsu, 210002, People's Republic of China
| | - Jin Wang
- Department of Orthopedics, Bayi Hospital Affiliated Nanjing University of Chinese Medicine, 34 Yanggongjing Road, Nanjing, Jiangsu, 210002, People's Republic of China
| | - Fengrong Chen
- Department of Orthopedics, Xiamen University Affiliated Chenggong Hospital, Xiamen, Fujian, 361000, People's Republic of China
| | - Guoyin Liu
- Department of Orthopedics, Bayi Hospital Affiliated Nanjing University of Chinese Medicine, 34 Yanggongjing Road, Nanjing, Jiangsu, 210002, People's Republic of China
| | - Zhiqiang Weng
- Department of Outpatient, Jinling Hospital, Nanjing University School of Medicine, 305 Zhongshan East Road, Nanjing, Jiangsu, 210002, People's Republic of China.
| | - Jianmin Chen
- Department of Orthopedics, Bayi Hospital Affiliated Nanjing University of Chinese Medicine, 34 Yanggongjing Road, Nanjing, Jiangsu, 210002, People's Republic of China.
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Zhang M, Chen S, Weng Z. Copper-Mediated One-Pot Synthesis of 2,2-Difluoro-1,3-benzoxathioles from o-Bromophenols and Trifluoromethanethiolate. Org Lett 2018; 20:481-484. [DOI: 10.1021/acs.orglett.7b03877] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Mengjia Zhang
- State Key Laboratory of Photocatalysis
on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Shouxiong Chen
- State Key Laboratory of Photocatalysis
on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis
on Energy and Environment, College of Chemistry, Fuzhou University, Fujian 350108, China
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