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Singh PP, Sinha S, Gahtori P, Tivari S, Srivastava V. Recent advances of decatungstate photocatalyst in HAT process. Org Biomol Chem 2024; 22:2523-2538. [PMID: 38456306 DOI: 10.1039/d4ob00213j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
The decatungstate anion (W10O324-) appears to exhibit especially interesting properties as a photocatalyst. Because of its unique photocatalytic properties, it is now recognised as a promising tool in organic chemistry. This study examines recent advances in decatungstate chemistry, primarily concerned with synthetic and, to some degree, mechanistic challenges. In this short review we have selected to give a number of illustrative examples that demonstrate the various applications of decatungstate in the hydrogen atom transfer (HAT) process.
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Affiliation(s)
- Praveen P Singh
- Department of Chemistry, United College of Engineering & Research, Prayagraj, U.P.-211010, India.
| | - Surabhi Sinha
- Department of Chemistry, United College of Engineering & Research, Prayagraj, U.P.-211010, India.
| | - Prashant Gahtori
- School of Pharmacy, Graphic Era Hill University, Dehradun, 248002 Uttarakhand, India
| | - Shraddha Tivari
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj, U.P.-211002, India.
| | - Vishal Srivastava
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj, U.P.-211002, India.
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2
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Beg MZ, Singh PK, Singh PP, Srivastava M, Srivastava V. Metal-free visible light mediated direct C-H amination of benzoxazole with secondary amines. Mol Divers 2024; 28:61-71. [PMID: 36609739 DOI: 10.1007/s11030-022-10595-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 12/26/2022] [Indexed: 01/09/2023]
Abstract
An efficient visible light mediated, eosin Y catalyzed direct C-H oxidative amination of benzoxazoles with secondary amines has been developed, which providing a straightforward, green, and environmentally benign access to a wide variety of substituted benzoxazole-2-amines under mild reaction conditions. The biological studies such as drug-likeness and molecular docking are also carried out on the molecule.
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Affiliation(s)
- Mohd Zaheeruddin Beg
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj, 211002, India
| | - Pravin K Singh
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj, 211002, India
| | - Praveen P Singh
- Department of Chemistry, United College of Engineering & Research, Naini, Prayagraj, 211010, India
| | - Manish Srivastava
- Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - Vishal Srivastava
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj, 211002, India.
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3
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Singh PP, Sinha S, Nainwal P, Singh PK, Srivastava V. Novel applications of photobiocatalysts in chemical transformations. RSC Adv 2024; 14:2590-2601. [PMID: 38226143 PMCID: PMC10788709 DOI: 10.1039/d3ra07371h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 12/28/2023] [Indexed: 01/17/2024] Open
Abstract
Photocatalysis has proven to be an effective approach for the production of reactive intermediates under moderate reaction conditions. The possibility for the green synthesis of high-value compounds using the synergy of photocatalysis and biocatalysis, benefiting from the selectivity of enzymes and the reactivity of photocatalysts, has drawn growing interest. Mechanistic investigations, substrate analyses, and photobiocatalytic chemical transformations will all be incorporated in this review. We seek to shed light on upcoming synthetic opportunities in the field by precisely describing mechanistically unique techniques in photobiocatalytic chemistry.
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Affiliation(s)
- Praveen P Singh
- Department of Chemistry, United College of Engineering & Research Prayagraj U. P.-211010 India
| | - Surabhi Sinha
- Department of Chemistry, United College of Engineering & Research Prayagraj U. P.-211010 India
| | - Pankaj Nainwal
- School of Pharmacy, Graphic Era Hill University Dehradun Uttarakhand India
| | - Pravin K Singh
- Department of Chemistry, CMP Degree College, University of Allahabad Prayagraj U. P.-211002 India
| | - Vishal Srivastava
- Department of Chemistry, CMP Degree College, University of Allahabad Prayagraj U. P.-211002 India
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Singh PP, Singh J, Srivastava V. Visible-light acridinium-based organophotoredox catalysis in late-stage synthetic applications. RSC Adv 2023; 13:10958-10986. [PMID: 37033422 PMCID: PMC10077514 DOI: 10.1039/d3ra01364b] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 03/29/2023] [Indexed: 04/11/2023] Open
Abstract
The field of photoredox catalysis has been transformed by the use of organic photocatalysts, which give access to re-activities that were previously only possible with transition-metal photocatalysts. Recent advancements in the use of an acridinium photocatalyst in organic synthesis are covered in this review. Both the late-stage functionalization of biorelevant molecules and the activation of inert chemical bonds are explored, with an emphasis on their mechanistic features.
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Affiliation(s)
- Praveen P Singh
- Department of Chemistry, United College of Engineering & Research Naini Prayagraj 211010 India
| | - Jaya Singh
- Department of Chemistry, LRPG College Sahibabad Gaziabad Uttar Pradesh India
| | - Vishal Srivastava
- Department of Chemistry, CMP Degree College, University of Allahabad Prayagraj 211002 Uttar Pradesh India
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5
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Singh SP, Srivastava V, Singh PK, Singh PP. Visible-light induced eosin Y catalysed C(sp2)-H alkylation of carbonyl substrates via direct HAT. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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6
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Tivari S, Singh PK, Singh PP, Srivastava V. Visible light-induced photoredox catalyzed C-N coupling of amides with alcohols. RSC Adv 2022; 12:35221-35226. [PMID: 36540212 PMCID: PMC9730743 DOI: 10.1039/d2ra07065k] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 12/02/2022] [Indexed: 03/23/2024] Open
Abstract
A visible-light-mediated method for the construction of N-monoalkylated products from easily available benzamides and benzyl alcohol in the presence of eosin Y has been developed. The reaction proceeded smoothly, for a wide range of derivatives of benzamides and benzyl alcohols, to give the desired products in good to excellent yields. Biological studies, such as those on drug-likeness and molecular docking, are carried out on the molecules.
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Affiliation(s)
- Shraddha Tivari
- Department of Chemistry, CMP Degree College, University of Allahabad Prayagraj-211002 Uttar Pradesh India
| | - Pravin K Singh
- Department of Chemistry, CMP Degree College, University of Allahabad Prayagraj-211002 Uttar Pradesh India
| | - Praveen P Singh
- Department of Chemistry, United College of Engineering & Research Naini Prayagraj-211010 Uttar Pradesh India
| | - Vishal Srivastava
- Department of Chemistry, CMP Degree College, University of Allahabad Prayagraj-211002 Uttar Pradesh India
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Zhang Z, Chen Y, He L, Xie L, Chen Z. Regioselective Synthesis of Indole-Fused Seven-Membered N-Heterocycles via Photoredox-Catalyzed Intramolecular Cyclization. J Org Chem 2022; 87:14394-14406. [PMID: 36206145 DOI: 10.1021/acs.joc.2c01829] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Herein, we describe the construction of indole-fused seven-membered N- and O-heterocycles from indolyl α-diazocarbonyls via photoredox-catalyzed intramolecular cyclization. The photoredox process features operational simplicity, mild conditions, and as low as 0.1 mol % catalyst loading. The tricyclic heterocycles are obtained in yields of 24 to 67% with excellent regioselectivity. The practicality of this protocol is further demonstrated by gram-scale reactions carried out in both batch and continuous flow.
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Affiliation(s)
- Ziqin Zhang
- School of Pharmacy, Fujian Medical University, Fuzhou 350122, China
| | - Yifeng Chen
- School of Pharmacy, Fujian Medical University, Fuzhou 350122, China
| | - Linrong He
- School of Pharmacy, Fujian Medical University, Fuzhou 350122, China
| | - Lihua Xie
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou 350122, China
| | - Zhitao Chen
- Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy, Fujian Medical University, Fuzhou 350122, China
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Singh PP, Sinha S, Pandey G, Srivastava V. Molybdenum disulfide (MoS 2) based photoredox catalysis in chemical transformations. RSC Adv 2022; 12:29826-29839. [PMID: 36321108 PMCID: PMC9578401 DOI: 10.1039/d2ra05695j] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 10/11/2022] [Indexed: 11/15/2022] Open
Abstract
Photoredox catalysis has been explored for chemical reactions by irradiation of photoactive catalysts with visible light, under mild and environmentally benign conditions. Furthermore, this methodology permits the activation of abundant chemicals into valuable products through novel mechanisms that are otherwise inaccessible. In this context, MoS2 has drawn attention due to its excellent solar spectral response and its notable electrical, optical, mechanical and magnetic properties. MoS2 has a number of characteristic properties like tunable band gap, enhanced absorption of visible light, a layered structure, efficient photon electron conversion, good photostability, non-toxic nature and quantum confinement effects that make it an ideal photocatalyst and co-catalyst for chemical transformations. Recently, MoS2 has gained synthetic utility in chemical transformations. In this review, we will discuss MoS2 properties, structure, synthesis techniques, and photochemistry along with modifications of MoS2 to enhance its photocatalytic activity with a focus on its applications and future challenges.
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Affiliation(s)
- Praveen P Singh
- Department of Chemistry, United College of Engineering & Research Prayagraj 211002 Uttar Pradesh India
| | - Surabhi Sinha
- Department of Chemistry, United College of Engineering & Research Prayagraj 211002 Uttar Pradesh India
| | - Geetika Pandey
- Department of Physics, United University Prayagraj 211012 Uttar Pradesh India
| | - Vishal Srivastava
- Department of Chemistry, CMP Degree College, University of Allahabad Prayagraj-211002 Uttar Pradesh India
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Singh PP, Srivastava V. Recent advances in visible-light graphitic carbon nitride (g-C 3N 4) photocatalysts for chemical transformations. RSC Adv 2022; 12:18245-18265. [PMID: 35800311 PMCID: PMC9210974 DOI: 10.1039/d2ra01797k] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 06/04/2022] [Indexed: 01/02/2023] Open
Abstract
Graphitic carbon nitride (g-C3N4) has emerged as a new research hotspot, attracting broad interdisciplinary attention in the form of metal-free and visible-light-responsive photocatalysts in the field of solar energy conversion and environmental remediation. These photocatalysts have evolved as attractive candidates due to their non-toxicity, chemical stability, efficient light absorption capacity in the visible and near-infrared regions, and adaptability as a platform for the fabrication of hybrid materials. This review mainly describes the latest advances in g-C3N4 photocatalysts for chemical transformations. In addition, the typical applications of g-C3N4-based photocatalysts involving organic transformation reactions are discussed (synthesis of heterocycles, hydrosulfonylation, hydration, oxygenation, arylation, coupling reactions, etc.).
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Affiliation(s)
- Praveen P Singh
- Department of Chemistry, United College of Engineering & Research Naini Prayagraj 211010 India
| | - Vishal Srivastava
- Department of Chemistry, CMP Degree College, University of Allahabad Prayagraj 211002 India
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Arango-Daza JC, Lluna-Galán C, Izquierdo-Aranda L, Cabrero-Antonino JR, Adam R. Heterogeneous Pd-Catalyzed Efficient Synthesis of Imidazolones via Dehydrogenative Condensation between Ureas and 1,2-Diols. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01423] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Juan Camilo Arango-Daza
- Instituto de Tecnología Química (UPV-CSIC), Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos s/n, 46022 València, Spain
| | - Carles Lluna-Galán
- Instituto de Tecnología Química (UPV-CSIC), Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos s/n, 46022 València, Spain
| | - Luis Izquierdo-Aranda
- Instituto de Tecnología Química (UPV-CSIC), Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos s/n, 46022 València, Spain
| | - Jose R. Cabrero-Antonino
- Instituto de Tecnología Química (UPV-CSIC), Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos s/n, 46022 València, Spain
| | - Rosa Adam
- Instituto de Tecnología Química (UPV-CSIC), Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos s/n, 46022 València, Spain
- Departament de Química Orgànica, Facultat de Farmàcia, Universitat de València, Av. Vicent Andrés Estellés s/n, Burjassot, 46100 València, Spain
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Recent advances of visible-light photocatalysis in the functionalization of organic compounds. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C: PHOTOCHEMISTRY REVIEWS 2022. [DOI: 10.1016/j.jphotochemrev.2022.100488] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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12
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Srivastava V, Singh PK, Tivari S, Singh PP. Visible light photocatalysis in the synthesis of pharmaceutically relevant heterocyclic scaffolds. Org Chem Front 2022. [DOI: 10.1039/d1qo01602d] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Visible light and photoredox catalysis have emerged as a powerful and long-lasting tool for organic synthesis, demonstrating the importance of a variety of chemical bond formation methods.
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Affiliation(s)
- Vishal Srivastava
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj 211002, India
| | - Pravin K. Singh
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj 211002, India
| | - Shraddha Tivari
- Department of Chemistry, CMP Degree College, University of Allahabad, Prayagraj 211002, India
| | - Praveen P. Singh
- Department of Chemistry, United College of Engineering & Research, Naini, Prayagraj 211010, India
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