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Recent Applications of Heteropolyacids and Related Compounds in Heterocycle Synthesis. Contributions between 2010 and 2020. Catalysts 2021. [DOI: 10.3390/catal11020291] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Over the past two decades, polyoxometalates (POM) have received considerable attention as solid catalysts, due to their unique physicochemical characteristics, since, first, they have very strong Bronsted acidity, approaching the region of a superacid, and second, they are efficient oxidizers that exhibit rapid redox transformations under fairly mild conditions. Their structural mobility is also highlighted, since they are complex molecules that can be modified by changing their structure or the elements that compose them to model their size, charge density, redox potentials, acidity, and solubility. Finally, they can be used in substoichiometric amounts and reused without an appreciable loss of catalytic activity, all of which postulate them as versatile, economic and ecological catalysts. Therefore, in 2009, we wrote a review article highlighting the great variety of organic reactions, mainly in the area of the synthesis of bioactive heterocycles in which they can be used, and this new review completes that article with the contributions made in the same area for the period 2010 to 2020. The synthesized heterocycles to be covered include pyrimidines, pyridines, pyrroles, indoles, chromenes, xanthenes, pyrans, azlactones, azoles, diazines, azepines, flavones, and formylchromones, among others.
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Nikoonahad A, Djahed B, Norzaee S, Eslami H, Derakhshan Z, Miri M, Fakhri Y, Hoseinzadeh E, Ghasemi SM, Balarak D, Fallahzadeh RA, Zarrabi M, Taghavi M. An overview report on the application of heteropoly acids on supporting materials in the photocatalytic degradation of organic pollutants from aqueous solutions. PeerJ 2018; 6:e5501. [PMID: 30225166 PMCID: PMC6139020 DOI: 10.7717/peerj.5501] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 08/01/2018] [Indexed: 11/24/2022] Open
Abstract
Organic pollutants contaminate water resources and the environment when discharged into water streams. Also, the presence of these materials in incompletely treated or untreated wastewater leads to serious environmental hazards. The hydroxyl radicals and holes are regarded as the most oxidant species in the degradation of organic pollutants using the studied composites. The results of this review show that heteropoly acids on supporting materials could be considered as appropriate photocatalysts in the removal of organic pollutant from aqueous solutions.
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Affiliation(s)
- Ali Nikoonahad
- Department of Environmental Health Engineering, School of Health, Ilam University of Medical Sciences, Ilam, Iran
| | - Babak Djahed
- Department of Environmental Health Engineering, Iranshahr University of Medical Sciences, Iranshahr, Iran
| | - Samira Norzaee
- Department of Environmental Health Engineering, Iranshahr University of Medical Sciences, Iranshahr, Iran
| | - Hadi Eslami
- Department of Environmental Health Engineering, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Zahra Derakhshan
- Department of Environmental Health Engineering, Larestan University of Medical Sciences, Larestan, Iran
| | - Mohammad Miri
- Cellular and Molecular Research Center, Department of Environmental Health Engineering, School of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Yadolah Fakhri
- Student Research Committee, Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Edris Hoseinzadeh
- Department of Environmental Health Engineering, Tarbiat Modares University, Tehran, Iran
| | | | - Davoud Balarak
- Department of Environmental Health Engineering, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Reza Ali Fallahzadeh
- Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mansur Zarrabi
- Department of Environmental Health Engineering, Alborz University of Medical Sciences, Karaj, Iran
| | - Mahmoud Taghavi
- Department of Environmental Health Engineering, School of Public Health, Social Development & Health Promotion Research Center, Gonabad University of Medical Sciences, Gonabad, Iran
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Vekariya RH, Patel KD, Prajapati NP, Patel HD. Phenacyl bromide: A versatile organic intermediate for the synthesis of heterocyclic compounds. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2017.1329440] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Rajesh H. Vekariya
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, India
| | - Kinjal D. Patel
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, India
| | - Neelam P. Prajapati
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, India
| | - Hitesh D. Patel
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, India
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