1
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Lin JX, Liu GH, Liu LQ, Wang YC, He Y. Sodium Carbonate-Promoted Formation of 5-Amino-1,2,4-thiadiazoles and 5-Amino-1,2,4-selenadiazoles with Elemental Sulfur and Selenium. J Org Chem 2024; 89:101-110. [PMID: 38071750 DOI: 10.1021/acs.joc.3c01716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Sodium carbonate-promoted facile synthesis of 5-amino-1,2,4-thiadiazoles and 5-amino-1,2,4-selenadiazoles with elemental sulfur and selenium, respectively, was developed. This method was carried out with O2 in the air as the green oxidant, and it has several advantages, including low cost, low toxicity, and stable sulfur and selenium sources, good to excellent yields with water as the sole byproduct, simple operation, and a broad substrate scope. Preliminary mechanistic studies indicate that the formation of the 1,2,4-thiadiazole ring and the 1,2,4-selenadiazole ring undergoes different processes.
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Affiliation(s)
- Jun-Xu Lin
- College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, People's Republic of China
| | - Guo-Hui Liu
- College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, People's Republic of China
| | - Li-Qiu Liu
- College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, People's Republic of China
| | - Ying-Chun Wang
- College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, People's Republic of China
| | - Yan He
- School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, People's Republic of China
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2
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External oxidant-free and transition metal-free synthesis of 5-amino-1,2,4-thiadiazoles as promising antibacterials against ESKAPE pathogen strains. Mol Divers 2022; 27:651-666. [PMID: 35639224 DOI: 10.1007/s11030-022-10445-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/18/2022] [Indexed: 10/18/2022]
Abstract
A new route to 5-amino-1,2,4-thiadiazole derivatives via reaction of N-chloroamidines with isothiocyanates has been proposed. The advantages of this method are high product yields (up to 93%), the column chromatography-free workup procedure, scalability and the absence of additive oxidizing agents or transition metal catalysts. The 28 examples of 5-amino-1,2,4-thiadiazole derivatives obtaining via the proposing protocol were evaluated in vitro against ESKAPE pathogens strains (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, Enterobacter cloacae). It was found that compounds 5ba, 5bd, 6a, 6d and 6c have potent antibacterial activity (MIC values 0.09-1.5 μg mL-1), which is superior to the activity of commercial antibiotics such as pefloxacin (MIC 4-8 μg mL-1) and streptomycin (MIC 2-32 μg mL-1). The additional cytotoxic assay of hit compounds on PANC-1 cell line demonstrated the low or non-cytotoxicity activity at the same level of concentrations. Thus, these 5 compounds are promising starting point for further antimicrobial drug development.
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3
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Yu W, Zhang H, Yin PA, Zhou F, Wang Z, Wu W, Peng Q, Jiang H, Tang BZ. Restriction of Conformation Transformation in Excited State: An Aggregation-Induced Emission Building Block Based on Stable Exocyclic C=N Group. iScience 2020; 23:101587. [PMID: 33089098 PMCID: PMC7566090 DOI: 10.1016/j.isci.2020.101587] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/10/2020] [Accepted: 09/14/2020] [Indexed: 12/21/2022] Open
Abstract
The development of aggregation-induced emission (AIE) building block and deciphering its luminescence mechanism are of great significance. Here a feasible strategy for the construction of AIE unit based on E-Z isomerization (EZI) of exocyclic C=N double bond is proposed. Taking [1,2,4]thiadiazole[4,3-a]pyridine (TZP) derivative as an example, its aryl-substituted derivative (TZPP) shows obvious AIE character. The analysis of spectral data and theoretical calculations indicates that fast structural relaxation of TZPP in the emissive state plays a key role in a low fluorescence quantum yield in dilute solution, which should be caused by the small energy gap between locally excited (LE) state and twisted intramolecular charge transfer state. When in solid state, the bright emission with LE state characteristic reappears due to the large shift barrier of geometry transformation. As a potential building block for AIEgens with special heterocyclic structure, these findings would open up opportunities for developing various functional materials. A new aggregation-induced emission building block A novel AIE mechanism with spectral measurements and theoretical calculations Available starting materials resulting in convenient synthesis and modification A stable exocyclic C=N double bond in heterocycles
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Affiliation(s)
- Wentao Yu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology (SCUT), Guangzhou 510640, China
| | - Han Zhang
- AIE Institute, SCUT-HKUST Joint Research Institute, Guangzhou International Campus, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Ping-An Yin
- AIE Institute, SCUT-HKUST Joint Research Institute, Guangzhou International Campus, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Fan Zhou
- AIE Institute, SCUT-HKUST Joint Research Institute, Guangzhou International Campus, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Zhiming Wang
- AIE Institute, SCUT-HKUST Joint Research Institute, Guangzhou International Campus, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology (SCUT), Guangzhou 510640, China
| | - Qian Peng
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology (SCUT), Guangzhou 510640, China
| | - Ben Zhong Tang
- AIE Institute, SCUT-HKUST Joint Research Institute, Guangzhou International Campus, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.,Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
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4
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Verma A, Srivastava A, Tiwari SK, Yadav N, Ansari MD, Yadav VB, Sagir H, Siddiqui IR. Visible light promoted formation of
N─S
bond by photocatalyst Eosin Y. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ankit Verma
- Laboratory of Green Synthesis, Department of ChemistryUniversity of Allahabad Prayagraj India
| | - Arjita Srivastava
- Department of ChemistryCMP Degree College (A Constituent PG College of University of Allahabad) Prayagraj India
| | - Saurabh K Tiwari
- Laboratory of Green Synthesis, Department of ChemistryUniversity of Allahabad Prayagraj India
| | - Neetu Yadav
- Laboratory of Green Synthesis, Department of ChemistryUniversity of Allahabad Prayagraj India
| | - Mohd Danish Ansari
- Laboratory of Green Synthesis, Department of ChemistryUniversity of Allahabad Prayagraj India
| | - Vijay B Yadav
- Laboratory of Green Synthesis, Department of ChemistryUniversity of Allahabad Prayagraj India
| | - Hozeyfa Sagir
- Department of ChemistryPaliwal PG College Shikohabad India
| | - Ibadur R Siddiqui
- Laboratory of Green Synthesis, Department of ChemistryUniversity of Allahabad Prayagraj India
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5
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Chen JY, Selvaraju M, Lin YT, Dhole S, Lin CY, Sun CM. Molecular Iodine-Promoted [3 + 2] Oxidative Cyclization for the Synthesis of Heteroarene-Fused [1,2,4] Thiadiazoles/Selenadiazoles. J Org Chem 2020; 85:5570-5579. [PMID: 32249566 DOI: 10.1021/acs.joc.0c00421] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Two new classes of heteroarene-fused [1,2,4]thiadiazole and [1,2,4]selenadiazole are synthesized through the iodine-mediated [3 + 2] oxidative cyclization of 2-aminoheteroarenes and isothiocyanates/isoselenocyanates. This oxidative [3 + 2] annulation strategy is highly regiospecific to proceed a selective C-N bond formation at the endo-nitrogen of 2-aminoheteroarenes followed by an intramolecular oxidative N-S/N-Se bond formation. It is the first example of an I2-mediated oxidative nitrogen-selenium (N-Se) bond formation.
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Affiliation(s)
- Jin-Yu Chen
- Department of Applied Chemistry, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan
| | - Manikandan Selvaraju
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Yen-Tzu Lin
- Department of Applied Chemistry, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan
| | - Sandip Dhole
- Department of Applied Chemistry, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan
| | - Chih-Yu Lin
- Department of Applied Chemistry, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan
| | - Chung-Ming Sun
- Department of Applied Chemistry, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan.,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, 100, Shih-Chuan 1st Road, Kaohsiung 807-08, Taiwan
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6
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Li J, Xie X, Yang P, Jiang S, Tao L, Li Z, Lu C, Liu W. Electrochemical Synthesis of 1,2,4‐Thiadiazoles through Intermolecular Dehydrogenative S‐N Coupling. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901290] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jiang‐Sheng Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha 410114 People's Republic of China
| | - Xin‐Yun Xie
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha 410114 People's Republic of China
| | - Pan‐Pan Yang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha 410114 People's Republic of China
| | - Si Jiang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha 410114 People's Republic of China
| | - Li Tao
- State Grid Hunan Electric Power Company Limited Research Institute Changsha 410004 People's Republic of China
| | - Zhi‐Wei Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha 410114 People's Republic of China
| | - Cui‐Hong Lu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha 410114 People's Republic of China
| | - Wei‐Dong Liu
- National Engineering Research Center for AgrochemicalsHunan Research Institute of Chemical Industry Changsha 410007 People's Republic of China
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7
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Rivas-Loaiza JA, Reyes-Escobedo CE, Lopez Y, Rojas-Lima S, García-Merinos JP, López-Ruiz H. (Thio)urea-catalyzed Friedel-Crafts Reaction: Synthesis of Bis(indolyl)- methanes. LETT ORG CHEM 2019. [DOI: 10.2174/1570178616666190222150915] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
:Bis(indolyl)methane derivatives (BIMs) were synthesized in moderate to good yields by (thio)urea catalyzed electrophilic substitution of indole (2) with various aldehydes 1. Reactions were performed under conventional and microwave (MW) heating, either using 1,2-dichloroetane as solvent or without solvent. The procedure using microwave heating was also applied to the synthesis of the natural products vibrindole A (3n), arsindoline A (3i), arundine (3o) and tris(1H-indol-3-yl)methane (3j). Additionally, the synthesis of streptindole was carried out via intermediate 3g. This methodology is well suited for the synthesis of bis(indolyl)methanes: it offers good yields of products, low sensitivity to moisture and oxygen, high tolerance to different functional groups on the aldehydes such as alkynes and trimethylsilane, and simplicity in operation
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Affiliation(s)
- Juan A. Rivas-Loaiza
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, 58030 Morelia, Michoacán, Mexico
| | - Carlos E. Reyes-Escobedo
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera-Pachuca-Tulancingo Km 4.5, Ciudad Universitaria, 42184 Mineral de la Reforma, Hidalgo, Mexico
| | - Yliana Lopez
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, 58030 Morelia, Michoacán, Mexico
| | - Susana Rojas-Lima
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera-Pachuca-Tulancingo Km 4.5, Ciudad Universitaria, 42184 Mineral de la Reforma, Hidalgo, Mexico
| | - Juan Pablo García-Merinos
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, 58030 Morelia, Michoacán, Mexico
| | - Heraclio López-Ruiz
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera-Pachuca-Tulancingo Km 4.5, Ciudad Universitaria, 42184 Mineral de la Reforma, Hidalgo, Mexico
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8
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Yu W, Wu W, Jiang H. Copper‐Catalyzed Benzylic C—H Functionalization, Oxidation and Cyclization of Methylarenes: Direct Access to 2‐Arylbenzothiazoles. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900340] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Wentao Yu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou Guangdong 510640 China
| | - Wanqing Wu
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou Guangdong 510640 China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou Guangdong 510640 China
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9
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Yang Z, Cao T, Liu S, Li A, Liu K, Yang T, Zhou C. Transition-metal-free S–N bond formation: synthesis of 5-amino-1,2,4-thiadiazoles from isothiocyanates and amidines. NEW J CHEM 2019. [DOI: 10.1039/c9nj01419e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel and green method for the synthesis of 5-amino-1,2,4-thiadiazoles has been developed by the reaction of isothiocyanates with amidines.
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Affiliation(s)
- Zan Yang
- College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology
- Yueyang 414006
- P. R. China
| | - Ting Cao
- College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology
- Yueyang 414006
- P. R. China
| | - Si Liu
- College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology
- Yueyang 414006
- P. R. China
| | - An Li
- College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology
- Yueyang 414006
- P. R. China
| | - Kun Liu
- College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology
- Yueyang 414006
- P. R. China
| | - Tao Yang
- College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology
- Yueyang 414006
- P. R. China
| | - Congshan Zhou
- College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology
- Yueyang 414006
- P. R. China
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