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Raveena, Singh MP, Sengar M, Kumari P. Synthesis of Graphene oxide/Porphyrin Nanocomposite for Photocatalytic Degradation of Crystal Violet Dye. ChemistrySelect 2023. [DOI: 10.1002/slct.202203272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Raveena
- Department of Chemistry University of Delhi New Delhi 110007 India
- Bio-organic material research laboratory, Department of Chemistry, Deshbandhu College University of Delhi, Kalkaji New Delhi 110019 India
| | - Manoj P. Singh
- Advanced Instrumentation Research Facility Jawaharlal Nehru University New Delhi 110067 India
| | - Manisha Sengar
- Department of Zoology, Deshbandhu College University of Delhi, Kalkaji New Delhi 110019 India
| | - Pratibha Kumari
- Bio-organic material research laboratory, Department of Chemistry, Deshbandhu College University of Delhi, Kalkaji New Delhi 110019 India
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Kumar S, Upadhyay C, Bansal M, Grishina M, Chhikara BS, Potemkin V, Rathi B, Poonam. Experimental and Computational Studies of Microwave-Assisted, Facile Ring Opening of Epoxide with Less Reactive Aromatic Amines in Nitromethane. ACS OMEGA 2020; 5:18746-18757. [PMID: 32775876 PMCID: PMC7408245 DOI: 10.1021/acsomega.0c01760] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/09/2020] [Indexed: 05/05/2023]
Abstract
Nucleophilic ring opening reactions of epoxides with aromatic amines are in the forefront of the synthetic organic chemistry research to build new bioactive scaffolds. Here, convenient, green, and highly efficient regioselective ring opening reactions of sterically hindered (2R,3S)-3-(N-Boc-amino)-1-oxirane-4-phenylbutane with various poorly reactive aromatic amines are accomplished under microwave irradiation in nitromethane. All the reactions effectively implemented for various aromatic amines involve the reuse of nitromethane that supports its dual role as a solvent and catalyst. The corresponding new β-alcohol analogs of hydroxyethylamine (HEA) are isolated in 41-98% yields. The reactions proceed under mild conditions for a broad range of less reactive and sterically hindered aromatic amines. Proton NMR experiments suggest that the nucleophilicity of amines is influenced by nitromethane, which is substantiated by the extensive computational studies. Overall, this methodology elucidates the first-time use of nitromethane as a solvent for the ring opening reactions under microwave conditions involving an equimolar ratio of epoxide and aromatic amine without any catalyst, facile ring opening of complex epoxide by less reactive aromatic amines, low reaction time, less energy consumption, recycling of the solvent, and simple workup procedures.
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Affiliation(s)
- Sumit Kumar
- Department
of Chemistry, Miranda House, University
of Delhi, Delhi 110007, India
| | - Charu Upadhyay
- Department
of Chemistry, Miranda House, University
of Delhi, Delhi 110007, India
| | - Meenakshi Bansal
- Laboratory
for Translational Chemistry and Drug Discovery, Department of Chemistry, Hansraj College University Enclave, University of Delhi, Delhi 110007, India
| | - Maria Grishina
- Laboratory
of Computational Modelling of Drugs, South
Ural State University, Chelyabinsk 454080, Russia
| | - Bhupender S. Chhikara
- Department
of Chemistry, Aditi Mahavidyalaya, University
of Delhi, Bawana, Delhi 110039, India
| | - Vladimir Potemkin
- Laboratory
of Computational Modelling of Drugs, South
Ural State University, Chelyabinsk 454080, Russia
| | - Brijesh Rathi
- Laboratory
for Translational Chemistry and Drug Discovery, Department of Chemistry, Hansraj College University Enclave, University of Delhi, Delhi 110007, India
- Laboratory
of Computational Modelling of Drugs, South
Ural State University, Chelyabinsk 454080, Russia
| | - Poonam
- Department
of Chemistry, Miranda House, University
of Delhi, Delhi 110007, India
- Laboratory
of Computational Modelling of Drugs, South
Ural State University, Chelyabinsk 454080, Russia
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Malefane ME, Feleni U, Kuvarega AT. A tetraphenylporphyrin/WO3/exfoliated graphite nanocomposite for the photocatalytic degradation of an acid dye under visible light irradiation. NEW J CHEM 2019. [DOI: 10.1039/c9nj02747e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Charge carrier separation in visible light photocatalytic degradation of a dye was achieved by the fabrication of a tetraphenylporphyrin/WO3/exfoliated graphite nanocomposite.
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Affiliation(s)
- Mope Edwin Malefane
- Nanotechnology and Water Sustainability Research Unit
- University of South Africa
- College of Science
- Engineering and Technology
- Johannesburg
| | - Usisipho Feleni
- Nanotechnology and Water Sustainability Research Unit
- University of South Africa
- College of Science
- Engineering and Technology
- Johannesburg
| | - Alex Tawanda Kuvarega
- Nanotechnology and Water Sustainability Research Unit
- University of South Africa
- College of Science
- Engineering and Technology
- Johannesburg
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