1
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Gharghish S, Dekamin MG, Banakar SH. Functionalized graphene oxide by 4-amino-3-hydroxy-1-naphthalenesulfonic acid as a heterogeneous nanocatalyst for the one-pot synthesis of tetraketone and tetrahydrobenzo[ b]pyran derivatives under green conditions. NANOSCALE ADVANCES 2024; 6:3911-3922. [PMID: 39050950 PMCID: PMC11265595 DOI: 10.1039/d4na00223g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Accepted: 05/23/2024] [Indexed: 07/27/2024]
Abstract
4-Amino-3-hydroxy-1-naphthalenesulfonic acid-functionalized graphene oxide (GO-ANSA) was prepared and characterized using different spectroscopic, microscopic and analytical methods including energy-dispersive X-ray spectroscopy (EDS), EDS elemental mapping, Fourier-transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and thermogravimetry/differential thermogravimetry analysis (TGA/DTA). The obtained nanomaterial was used as a novel, highly efficient, and reusable solid acid carbocatalyst for the one-pot three-component synthesis of tetraketone, as well as tetrahydrobenzo[b]pyran derivatives via tandem Knoevenagel-Michael reactions under green conditions. All of the derivatives were prepared in EtOH, as a green solvent, under reflux conditions in high to excellent yields and very short reaction times. The nanocatalyst was recovered and reused at least five times without significant reduction in its activity. In addition, the absence of toxic transition metals, high to excellent yields, mild reaction conditions, simple procedure for the separation and purification of products, stability, and recycling of the catalyst are the most important advantages of this green procedure.
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Affiliation(s)
- Sara Gharghish
- Pharmaceutical and Heterocyclic Compounds Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Mohammad G Dekamin
- Pharmaceutical and Heterocyclic Compounds Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran
| | - Sepideh Hasanzadeh Banakar
- Pharmaceutical and Heterocyclic Compounds Research Laboratory, Department of Chemistry, Iran University of Science and Technology Tehran 16846-13114 Iran
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2
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Maurya MR, Kumar N, Avecilla F. Controlled Modification of Triaminoguanidine-Based μ 3 Ligands in Multinuclear [V IVO]/[V VO 2] Complexes and Their Catalytic Potential in the Synthesis of 2-Amino-3-cyano-4 H-pyrans/4 H-chromenes. Inorg Chem 2024; 63:2505-2524. [PMID: 38243891 DOI: 10.1021/acs.inorgchem.3c03704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2024]
Abstract
Reaction of tris(2-hydroxybenzylidene)-triaminoguanidinium chloride (I·HCl) and tris(5-bromo-2-hydroxybenzylidene)-triaminoguanidinium chloride (II·HCl) with [VIVO(acac)2] (1:1 molar ratio) in refluxing methanol resulted in mononuclear [VIVO] complexes, [VIVO(H2L1')(MeOH)] (1) and [VIVO(H2L2')(MeOH)] (2), respectively, where I and II undergo intramolecular triazole ring formation. Aerial oxidation of 1 and 2 in MeOH in the presence of Cs2CO3 gave corresponding cis-[VVO2] complexes Cs[(VO2)(H2L1')] (3) and Cs[(VO2)(H2L2')] (4). However, reaction of an aerially oxidized methanolic solution of [VIVO(acac)2] with I·HCl and II·HCl in the presence of Cs2CO3 (in 1:1:1 molar ratio) gave mononuclear complexes Cs[(VO2)(H3L1)] (5) and Cs[(VO2)(H3L2)] (6) without intramolecular triazole ring formation. Similar anionic trinuclear complexes Cs2[(VO2)3(L1)] (7) and Cs2[(VO2)3(L2)] (8) were isolable upon increasing the amounts of the vanadium precursor and Cs2CO3 to 3 equiv to the reaction applied for 5 and 6. Keeping the reaction mixture of 1 in MeOH under air gave [VVO(H2L1')(OMe)] (9). Structures of 3, 7, 8, and 9 were confirmed by X-ray crystal structure study. A permanent porosity in the crystalline metal-organic framework of 7 confirmed by single-crystal X-ray investigation was further verified by the BET study. Along with a suitable reaction mechanism, these synthesized compounds were explored as effective catalysts for the synthesis of biomolecules 4H-pyran/4H-chromenes.
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Affiliation(s)
- Mannar R Maurya
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Naveen Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Fernando Avecilla
- Universidade da Coruña, Grupo NanoToxGen, Centro Interdisciplinar de Química y Biología (CICA), Departamento de Química, Facultade de Ciencias, Campus de A Coruña, 15071A Coruña, Spain
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3
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Le TH, Kim MP, Park CH, Tran QN. Recent Developments in Materials for Physical Hydrogen Storage: A Review. MATERIALS (BASEL, SWITZERLAND) 2024; 17:666. [PMID: 38592009 PMCID: PMC10856162 DOI: 10.3390/ma17030666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/21/2024] [Accepted: 01/23/2024] [Indexed: 04/10/2024]
Abstract
The depletion of reliable energy sources and the environmental and climatic repercussions of polluting energy sources have become global challenges. Hence, many countries have adopted various renewable energy sources including hydrogen. Hydrogen is a future energy carrier in the global energy system and has the potential to produce zero carbon emissions. For the non-fossil energy sources, hydrogen and electricity are considered the dominant energy carriers for providing end-user services, because they can satisfy most of the consumer requirements. Hence, the development of both hydrogen production and storage is necessary to meet the standards of a "hydrogen economy". The physical and chemical absorption of hydrogen in solid storage materials is a promising hydrogen storage method because of the high storage and transportation performance. In this paper, physical hydrogen storage materials such as hollow spheres, carbon-based materials, zeolites, and metal-organic frameworks are reviewed. We summarize and discuss the properties, hydrogen storage densities at different temperatures and pressures, and the fabrication and modification methods of these materials. The challenges associated with these physical hydrogen storage materials are also discussed.
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Affiliation(s)
- Thi Hoa Le
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Republic of Korea;
| | - Minsoo P. Kim
- Department of Chemical Engineering, Sunchon National University, Suncheon 57922, Republic of Korea;
| | - Chan Ho Park
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Republic of Korea;
| | - Quang Nhat Tran
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Republic of Korea;
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4
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Kumar KS, Robert AR, Kerru N, Maddila S. A novel, swift, and effective green synthesis of morpholino-pyridine analogues in microwave irradiation conditions. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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5
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Study of self-assembly features in 4H-pyrans: Synthesis, Hirshfeld surface, and energy framework analysis. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Azizi Amiri M, Pasha GF, Tajbakhsh M, Asghari S. Copper‐amine complex immobilized on nano NaY zeolite as a recyclable nanocatalyst for the environmentally friendly synthesis of 2‐amino‐4
H
‐chromenes. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | - Mahmood Tajbakhsh
- Department of Organic Chemistry, Faculty of Chemistry University of Mazandaran Babolsar Iran
| | - Sakineh Asghari
- Department of Organic Chemistry, Faculty of Chemistry University of Mazandaran Babolsar Iran
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7
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Sulfonic acid pyridinium chloride-functionalized nanoparticles (MnCoFe2O4@Niacin-SO3H)+Cl− as a novel and reusable catalyst for synthesis of tetrahydrodipyrazolopyridines and pyranopyrazoles. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04800-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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8
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Rahmatpour F, Kosari M, Monadi N. Catalytic performance of copper(II) Schiff base complex immobilized on Fe3O4 nanoparticles in synthesis of 2-amino-4H-benzo[h] chromenes and reduction of 4-nitrophenol. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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9
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Gangu KK, Tharividi SG, Kerru N, Jonnalagadda SB. Excellent Catalytic Activity of Two Cd(II) Metal‐Organic Frameworks in The Synthesis of Benzothiazolo‐Pyrimidines. ChemistrySelect 2021. [DOI: 10.1002/slct.202103536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kranthi Kumar Gangu
- Vignan's Institute of Information Technology, Duvvada Visakhapatnam 530049 India
- School of Chemistry & Physics University of KwaZulu-Natal Westville Campus, Private Bag X54001 Durban 4000 South Africa
| | - Satya Guru Tharividi
- Vignan's Institute of Information Technology, Duvvada Visakhapatnam 530049 India
| | - Nagaraju Kerru
- Department of Chemistry GITAM University Bengaluru Karnataka 561203 India
- School of Chemistry & Physics University of KwaZulu-Natal Westville Campus, Private Bag X54001 Durban 4000 South Africa
| | - Sreekantha B. Jonnalagadda
- School of Chemistry & Physics University of KwaZulu-Natal Westville Campus, Private Bag X54001 Durban 4000 South Africa
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10
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Hassanzadeh‐Afruzi F, Dogari H, Esmailzadeh F, Maleki A. Magnetized melamine‐modified polyacrylonitrile (PAN@melamine/Fe
3
O
4
) organometallic nanomaterial: Preparation, characterization, and application as a multifunctional catalyst in the synthesis of bioactive dihydropyrano [2,3‐c]pyrazole and 2‐amino‐3‐cyano 4H‐pyran derivatives. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6363] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Fereshte Hassanzadeh‐Afruzi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry Iran University of Science and Technology Tehran Iran
| | - Haniyeh Dogari
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry Iran University of Science and Technology Tehran Iran
| | - Farhad Esmailzadeh
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry Iran University of Science and Technology Tehran Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry Iran University of Science and Technology Tehran Iran
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11
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Baruah JB. Naphthalenedicarboxylate based metal organic frameworks: Multifaceted material. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213862] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Kerru N, Gummidi L, Maddila S, Jonnalagadda SB. A Review of Recent Advances in the Green Synthesis of Azole- and Pyran-based Fused Heterocycles Using MCRs and Sustainable Catalysts. CURR ORG CHEM 2021. [DOI: 10.2174/1385272824999201020204620] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nitrogen, oxygen and sulfur-containing fused heterocycles are of great importance
because of their exciting and diverse biological activities. The construction of the carbonnitrogen
and carbon-oxygen through a multicomponent reaction approach by using ecofriendly
reusable heterogeneous catalysts are of significant importance as it opens avenues for
the introduction of nitrogen and oxygen in organic molecules. Thus, green methodologies
have gained particular significance in this field; today, green chemistry is considered a tool
for introducing sustainable concepts at the fundamental level. This review emphasizes and
discusses the current progress on the applications of eco-friendly, recyclable heterogeneous
catalysts for the synthesis of different heterocyclic fused systems and their green protocols.
We paid particular attention to the specific integration of carbon-nitrogen, and carbon-oxygen
bond-forming fused heterocycles by a one-pot approach by evaluating the literature between 2012 and the middle of
2020. The efficiency of the catalyst is assessed in terms of reaction time, yield and possible reusability. The MCR and
heterogeneous catalyst strategies have demonstrated broader scope, economical and viability for the green and sustainable
processes in the field of synthetic organic chemistry.
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Affiliation(s)
- Nagaraju Kerru
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban-4000, South Africa
| | - Lalitha Gummidi
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban-4000,, South Africa
| | - Suresh Maddila
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban-4000,, South Africa
| | - Sreekantha B. Jonnalagadda
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban-4000,, South Africa
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13
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C. Malakar C, Singh V, Kumar V, Singh D, Gujjarappa R. Efficient Approach towards the Polysubstituted 4H-Pyran Hybrid Quinolone Derivatives and Subsequent Copper-Catalyzed Hydroxylation of Haloarenes. HETEROCYCLES 2021. [DOI: 10.3987/com-20-14383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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TVSPV SG, Gangu KK, Maddila S, Jonnalagadda SB. Excellent catalytic activity of ethylenediamine stabilised oxalate ligated aluminium coordination complex for synthesis of novel benzoquinolines. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114734] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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15
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A study on the catalytic behaviour of Cd(II) and Sm(III) coordination complexes towards the four-component synthesis of quinoline-3-carboxylates. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108084] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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16
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Auria-Luna F, Fernández-Moreira V, Marqués-López E, Gimeno MC, Herrera RP. Ultrasound-assisted multicomponent synthesis of 4H-pyrans in water and DNA binding studies. Sci Rep 2020; 10:11594. [PMID: 32665694 PMCID: PMC7360557 DOI: 10.1038/s41598-020-68076-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/18/2020] [Indexed: 12/21/2022] Open
Abstract
A simple approach to synthesize new highly substituted 4H-pyran derivatives is described. Efficient Et3N acts as a readily accessible catalyst of this process performed in pure water and with only a 20 mol% of catalyst loading. The extremely simple operational methodology, short reaction times, clean procedure and excellent product yields render this new approach extremely appealing for the synthesis of 4H-pyrans, as potentially biological scaffolds. Additionally, DNA interaction analysis reveals that 4H-pyran derivatives behave preferably as minor groove binders over major groove or intercalators. Therefore, this is one of the scarce examples where pyrans have resulted to be interesting DNA binders with high binding constants (Kb ranges from 1.53 × 104 M-1 to 2.05 × 106 M-1).
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Affiliation(s)
- Fernando Auria-Luna
- Departamento de Química Orgánica, Laboratorio de Organocatálisis Asimétrica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, Nº12, 50009, Zaragoza, Spain
| | - Vanesa Fernández-Moreira
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, Nº12, 50009, Zaragoza, Spain
| | - Eugenia Marqués-López
- Departamento de Química Orgánica, Laboratorio de Organocatálisis Asimétrica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, Nº12, 50009, Zaragoza, Spain
| | - M Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, Nº12, 50009, Zaragoza, Spain
| | - Raquel P Herrera
- Departamento de Química Orgánica, Laboratorio de Organocatálisis Asimétrica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/ Pedro Cerbuna, Nº12, 50009, Zaragoza, Spain.
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17
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Ganja H, Robert AR, Lavanya P, Chinnam S, Maddila S, Jonnalagadda SB. Y2O3/HAp, a sustainable catalyst for novel synthesis of furo[3,4-b]chromenes derivatives via green strategy. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.107807] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Maddila SN, Maddila S, Kerru N, Bhaskaruni SVHS, Jonnalagadda SB. Facile One‐pot Synthesis of Arylsulfonyl‐4H‐pyrans Catalyzed by Ru Loaded Fluorapatite. ChemistrySelect 2020. [DOI: 10.1002/slct.201901867] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Surya N Maddila
- School of Chemistry & PhysicsUniversity of KwaZulu-Natal Westville Campus, Chilten Hills Private Bag 54001 Durban-4000 South Africa
| | - Suresh Maddila
- School of Chemistry & PhysicsUniversity of KwaZulu-Natal Westville Campus, Chilten Hills Private Bag 54001 Durban-4000 South Africa
| | - Nagaraju Kerru
- School of Chemistry & PhysicsUniversity of KwaZulu-Natal Westville Campus, Chilten Hills Private Bag 54001 Durban-4000 South Africa
| | - Sandeep V. H. S. Bhaskaruni
- School of Chemistry & PhysicsUniversity of KwaZulu-Natal Westville Campus, Chilten Hills Private Bag 54001 Durban-4000 South Africa
| | - Sreekantha B Jonnalagadda
- School of Chemistry & PhysicsUniversity of KwaZulu-Natal Westville Campus, Chilten Hills Private Bag 54001 Durban-4000 South Africa
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19
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MnO2 on hydroxyapatite: A green heterogeneous catalyst and synthesis of pyran-carboxamide derivatives. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2019.107706] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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Dwivedi KD, Borah B, Chowhan LR. Ligand Free One-Pot Synthesis of Pyrano[2,3- c]pyrazoles in Water Extract of Banana Peel (WEB): A Green Chemistry Approach. Front Chem 2020; 7:944. [PMID: 32039156 PMCID: PMC6987396 DOI: 10.3389/fchem.2019.00944] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 12/31/2019] [Indexed: 01/11/2023] Open
Abstract
Here, we have developed a novel, simple, efficient, and green protocol for one-pot synthesis of pyrano[2,3-c]pyrazole using arylidene malononitrile and pyrazolone in Water Extract of Banana Peels (WEB) as a reaction medium at room temperature (r.t.). This is a green and general synthetic protocol without utilization of any toxic organic solvent, ligand, base that could be applicable for the wide substrate scope in good to excellent yields. This protocol has various advantages such as fast reactions, eco-friendly reaction conditions, easy isolation of the product without using column chromatography. The green chemistry matrices calculation like atom economy reaction, environmental factor, as well as process mass intensity indicates the eco-friendly nature of the protocol.
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Affiliation(s)
| | | | - L. Raju Chowhan
- Centre for Applied Chemistry, Central University of Gujarat, Gandhinagar, India
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21
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Khumalo MR, Maddila SN, Maddila S, Jonnalagadda SB. A facile and one-pot synthesis of new tetrahydrobenzo[b]pyrans in water under microwave irradiation. BMC Chem 2019; 13:132. [PMID: 31788672 PMCID: PMC6878704 DOI: 10.1186/s13065-019-0651-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 11/13/2019] [Indexed: 11/29/2022] Open
Abstract
Eleven new tetrahydrobenzo[b]pyran derivatives were synthesized via a three component reaction of different aromatic aldehydes, methyl cyanoacetate and 1,3-cyclohexadione, with water as solvent under catalyst-free microwave irradiation. The structures of all the new molecules were well analysed and their structures established by using various spectral techniques (1H NMR, 13C NMR, 15N NMR and HRMS). Various advantages of reported protocol are the ease of preparation, short reaction times (10 min), aqueous solvent and excellent yields (89–98%). Additionally, this method provides a clean access to the desired products by simple workup.![]()
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Affiliation(s)
- Mandlenkosi Robert Khumalo
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000 South Africa
| | - Surya Narayana Maddila
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000 South Africa
| | - Suresh Maddila
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000 South Africa
| | - Sreekantha B Jonnalagadda
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban, 4000 South Africa
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22
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Akpotu SO, Moodley B, Vamsi B, Ofomaja A, Maddila S, Jonnalagadda SB. Citric Acid/MCM‐48 Catalyzed Multicomponent Reaction: An Efficient Method for the Novel Synthesis of Quinoline Derivatives. ChemistrySelect 2019. [DOI: 10.1002/slct.201900907] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Samson O. Akpotu
- School of Chemistry & PhysicsUniversity of KwaZulu-Natal, Westville Campus, Chilten Hills, Private Bag 54001 Durban-4000 South Africa
- Department of ChemistryVaal University of Techology P.Bag X021 Vanderbijlpak 1900 South Africa
| | - Brenda Moodley
- School of Chemistry & PhysicsUniversity of KwaZulu-Natal, Westville Campus, Chilten Hills, Private Bag 54001 Durban-4000 South Africa
| | - Boddu Vamsi
- Department of Chemistry, GITAM Institute of SciencesGITAM University, Visakhapatnam Andhra Pradesh India
| | - Augustine Ofomaja
- Department of ChemistryVaal University of Techology P.Bag X021 Vanderbijlpak 1900 South Africa
| | - Suresh Maddila
- School of Chemistry & PhysicsUniversity of KwaZulu-Natal, Westville Campus, Chilten Hills, Private Bag 54001 Durban-4000 South Africa
- Department of Chemistry, GITAM Institute of SciencesGITAM University, Visakhapatnam Andhra Pradesh India
| | - Sreekantha B Jonnalagadda
- School of Chemistry & PhysicsUniversity of KwaZulu-Natal, Westville Campus, Chilten Hills, Private Bag 54001 Durban-4000 South Africa
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23
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Maddila SN, Maddila S, Khumalo M, Bhaskaruni SV, Jonnalagadda SB. An eco-friendly approach for synthesis of novel substituted 4H-chromenes in aqueous ethanol under ultra-sonication with 94% atom economy. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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24
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Robert Khumalo M, Maddila SN, Maddila S, Jonnalagadda SB. A multicomponent, facile and catalyst-free microwave-assisted protocol for the synthesis of pyrazolo-[3,4-b]-quinolines under green conditions. RSC Adv 2019; 9:30768-30772. [PMID: 35529349 PMCID: PMC9072209 DOI: 10.1039/c9ra04604f] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 09/22/2019] [Indexed: 12/23/2022] Open
Abstract
A facile, swift and ecofriendly microwave-assisted multi-component/one-pot protocol is designed for the synthesis of novel pyrazolo-[3,4-b]-quinolines at ambient temperature in aqueous ethanol as a reaction medium. The 18 novel pyrazolo-[3,4-b]-quinoline derivatives were synthesized by fusion of chosen aryl aldehyde, dimedone and 5-amino-3-methyl-1-phenylpyrazole in excellent yields (91–98%). All the molecular structures were confirmed by 1H-NMR, 15N-NMR, 13C-NMR, and HRMS data analysis. Operational simplicity, easy handling, one-step simple workup procedure, mild reaction conditions, short reaction time (≤10 min), high selectivity and no by-product formation are the striking features of the protocol. A facile, swift and ecofriendly microwave-assisted multi-component/one-pot protocol is designed for the synthesis of novel pyrazolo-[3,4-b]-quinolines at ambient temperature in aqueous ethanol as a reaction medium.![]()
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Affiliation(s)
| | | | - Suresh Maddila
- School of Chemistry & Physics
- University of KwaZulu-Natal
- Durban
- South Africa
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Catalytic activity of supra molecular self-assembled Nickel (II) coordination complex in synthesis of indeno-pyrimidine derivatives. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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26
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Gangu KK, Maddila S, Mukkamala SB, Jonnalagadda SB. A 3D supramolecular assembly of Co(II) MOF constructed with 2,5-pyridinedicarboxylate strut and its catalytic activity towards synthesis of tetrahydrobiphenylene-1,3-dicarbonitriles. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.07.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Synthesis of quinazolinones and benzazoles utilizing recyclable sulfated metal-organic framework-808 catalyst in glycerol as green solvent. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.03.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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28
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Shabalala S, Maddila S, van Zyl WE, Jonnalagadda SB. Innovative Efficient Method for the Synthesis of 1,4-Dihydropyridines Using Y2O3 Loaded on ZrO2 as Catalyst. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02579] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sebenzile Shabalala
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban-4000, South Africa
| | - Suresh Maddila
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban-4000, South Africa
| | - Werner E. van Zyl
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban-4000, South Africa
| | - Sreekantha B. Jonnalagadda
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban-4000, South Africa
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