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Suo H, Faisca Phillips AM, Satrudhar M, Martins LMDRS, G. da Silva MDF, Pombeiro AJL, Han M, Sun W. Achieving ultra‐high molecular weight polyethylenes by vanadium aroylhydrazine‐arylolates. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hongyi Suo
- College of Chemistry and Chemical Engineering, Yantai University Yantai China
| | - Ana Maria Faisca Phillips
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais Lisbon Portugal
| | - Manas Satrudhar
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais Lisbon Portugal
- Faculdade de Engenharia, Universidade Lusófona de Humanidades e Tecnologias Lisbon Portugal
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais Lisbon Portugal
| | - Maria de Fátima G. da Silva
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais Lisbon Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais Lisbon Portugal
- Рeoples' Friendship University of Russia (RUDN University), Research Institute of Chemistry Moscow Russian Federation
| | - Mingyang Han
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences Beijing China
| | - Wen‐Hua Sun
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences Beijing China
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Mkhondwane ST, Pullabhotla VSR. Cyclohexane oxidation using advanced oxidation processes with metals and metal oxides as catalysts: a review. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Selective oxidation of cyclohexane has gained substantial interest in the field of research due to the prominence of its products in industrial processes. Particularly, advanced oxidation processes (AOPs) constitute a positive technology for the oxidation of cyclohexane owing to their high oxidation potentials and environmental benign properties. This review entails to address the progress made in advanced oxidation of cyclohexane over nanostructured metals and metal oxides catalysts. The main focus is directed toward the photocatalysis, Fenton oxidation and ozonation as advanced oxidation processes. Mainly, the fundamental principles, prime factors of the AOPs in conjunction with metal and metal oxide catalysts and the mechanistic insight toward the oxidation of cyclohexane are highlighted. The affirmative effects of the metals and metal oxide catalysts mainly focusing on particle size, structure and elemental composition is stressed. Lastly, the advantages and disadvantages of the AOPs and the strategic approaches to counter the disadvantages are also clearly elucidated.
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Gurbanov AV, Andrade MA, Martins LMDRS, Mahmudov KT, Pombeiro AJL. Water-soluble Al( iii), Fe( iii) and Cu( ii) formazanates: synthesis, structure, and applications in alkane and alcohol oxidations. NEW J CHEM 2022. [DOI: 10.1039/d1nj06211e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The synthesis, structure and catalytic performance of water-soluble Al(iii), Fe(iii) and Cu(ii) formazanates in the oxidation of cyclohexane and cyclohexanol to the coresponding organic products are reported.
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Affiliation(s)
- Atash V. Gurbanov
- Centro de Química Estrutural, Institute of Molecular Sciences, and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Department of Chemistry, Baku State University, Z. Xalilov Str. 23, Az 1148 Baku, Azerbaijan
| | - Marta A. Andrade
- Centro de Química Estrutural, Institute of Molecular Sciences, and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural, Institute of Molecular Sciences, and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Kamran T. Mahmudov
- Centro de Química Estrutural, Institute of Molecular Sciences, and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Department of Chemistry, Baku State University, Z. Xalilov Str. 23, Az 1148 Baku, Azerbaijan
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural, Institute of Molecular Sciences, and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Peoples’ Friendship University of Russia (RUDN University), Research Institute of Chemistry, 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
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Kachhap P, Chaudhary N, Haldar C. Solvent‐free oxidation of straight‐chain aliphatic primary alcohols by polymer‐grafted vanadium complexes. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6437] [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)
- Payal Kachhap
- Department of Chemistry Indian Institute of Technology (Indian School of Mines) Dhanbad India
| | - Nikita Chaudhary
- Department of Chemistry Indian Institute of Technology (Indian School of Mines) Dhanbad India
| | - Chanchal Haldar
- Department of Chemistry Indian Institute of Technology (Indian School of Mines) Dhanbad India
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Sutradhar M, Andrade MA, Carabineiro SAC, Martins LMDRS, Guedes da Silva MDFC, Pombeiro AJL. Oxido- and Dioxido-Vanadium(V) Complexes Supported on Carbon Materials: Reusable Catalysts for the Oxidation of Cyclohexane. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1456. [PMID: 34072796 PMCID: PMC8230237 DOI: 10.3390/nano11061456] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/17/2021] [Accepted: 05/28/2021] [Indexed: 11/24/2022]
Abstract
Oxidovanadium(V) and dioxidovanadium(V) compounds, [VO(OEt)L] (1) and [Et3NH][VO2L] (2), were synthesized using an aroylhydrazone Schiff base (5-bromo-2-hydroxybenzylidene)-2-hydroxybenzohydrazide (H2L). They were characterized by elemental analysis, Fourier-transform infrared spectroscopy (FT-IR), (1H and 51V) nuclear magnetic resonance (NMR), electrospray ionization mass spectrometry (ESI-MS) and single crystal X-ray diffraction analyses. Both complexes were immobilized on functionalized carbon nanotubes and activated carbon. The catalytic performances of 1 and 2, homogenous and anchored on the supports, were evaluated for the first time towards the MW-assisted peroxidative oxidation (with tert-butylhydroperoxide, TBHP) of cyclohexane under heterogeneous conditions. The immobilization of 1 and 2 on functionalized carbon materials improved the efficiency of catalytic oxidation and allowed the catalyst recyclability with a well-preserved catalytic activity.
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Affiliation(s)
- Manas Sutradhar
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (M.A.A.); (M.d.F.C.G.d.S.); (A.J.L.P.)
| | - Marta A. Andrade
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (M.A.A.); (M.d.F.C.G.d.S.); (A.J.L.P.)
| | - Sónia A. C. Carabineiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (M.A.A.); (M.d.F.C.G.d.S.); (A.J.L.P.)
- Laboratory of Catalysis and Materials (LCM), Associate Laboratory LSRE-LCM, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Largo da Torre, 2829-516 Caparica, Portugal
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (M.A.A.); (M.d.F.C.G.d.S.); (A.J.L.P.)
| | - Maria de Fátima C. Guedes da Silva
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (M.A.A.); (M.d.F.C.G.d.S.); (A.J.L.P.)
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (M.A.A.); (M.d.F.C.G.d.S.); (A.J.L.P.)
- Research Institute of Chemistry, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
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Maurya A, Haldar C. Liquid‐phase oxidation of olefins with rare hydronium ion salt of dinuclear dioxido‐vanadium(V) complexes and comparative catalytic studies with analogous copper complexes. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Abhishek Maurya
- Department of Chemistry Indian Institute of Technology (Indian School of Mines) Dhanbad Jharkhand 826004 India
| | - Chanchal Haldar
- Department of Chemistry Indian Institute of Technology (Indian School of Mines) Dhanbad Jharkhand 826004 India
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Abstract
The review describes articles that provide data on the synthesis and study of the properties of catalysts for the oxidation of alkanes, olefins, and alcohols. These catalysts are polynuclear complexes of iron, copper, osmium, nickel, manganese, cobalt, vanadium. Such complexes for example are: [Fe2(HPTB)(m-OH)(NO3)2](NO3)2·CH3OH·2H2O, where HPTB-¼N,N,N0,N0-tetrakis(2-benzimidazolylmethyl)-2-hydroxo-1,3-diaminopropane; complex [(PhSiO1,5)6]2[CuO]4[NaO0.5]4[dppmO2]2, where dppm-1,1-bis(diphenylphosphino)methane; (2,3-η-1,4-diphenylbut-2-en-1,4-dione)undecacarbonyl triangulotriosmium; phenylsilsesquioxane [(PhSiO1.5)10(CoO)5(NaOH)]; bi- and tri-nuclear oxidovanadium(V) complexes [{VO(OEt)(EtOH)}2(L2)] and [{VO(OMe)(H2O)}3(L3)]·2H2O (L2 = bis(2-hydroxybenzylidene)terephthalohydrazide and L3 = tris(2-hydroxybenzylidene)benzene-1,3,5-tricarbohydrazide); [Mn2L2O3][PF6]2 (L = 1,4,7-trimethyl-1,4,7-triazacyclononane). For comparison, articles are introduced describing catalysts for the oxidation of alkanes and alcohols with peroxides, which are simple metal salts or mononuclear metal complexes. In many cases, polynuclear complexes exhibit higher activity compared to mononuclear complexes and exhibit increased regioselectivity, for example, in the oxidation of linear alkanes. The review contains a description of some of the mechanisms of catalytic reactions. Additionally presented are articles comparing the rates of oxidation of solvents and substrates under oxidizing conditions for various catalyst structures, which allows researchers to conclude about the nature of the oxidizing species. This review is focused on recent works, as well as review articles and own original studies of the authors.
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Adam MSS, Makhlouf M, Ullah F, Mohamad ADM. Catalytic and biological reactivities of mononuclear copper (II) and vanadyl (II) complexes of naphthalenylimino-phenolate sodium sulfonate. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.01.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Kumar A, Kurbah SD, Syiemlieh I, Dhanpat SA, Borthakur R, Lal RA. Synthesis, characterization, reactivity, and catalytic studies of heterobimetallic vanadium(V) complexes containing hydrazone ligands. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Fe(III) Complexes in Cyclohexane Oxidation: Comparison of Catalytic Activities under Different Energy Stimuli. Catalysts 2020. [DOI: 10.3390/catal10101175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
In this study, the mononuclear Fe(III) complex [Fe(HL)(NO3)(H2O)2]NO3 (1) derived from Nʹ-acetylpyrazine-2-carbohydrazide (H2L) was synthesized and characterized by several physicochemical methods, e.g., elemental analysis, infrared (IR) spectroscopy, electrospray ionization mass spectrometry (ESI-MS), and single crystal X-ray diffraction analysis. The catalytic performances of 1 and the previously reported complexes [Fe(HL)Cl2] (2) and [Fe(HL)Cl(μ-OMe)]2 (3) towards the peroxidative oxidation of cyclohexane under three different energy stimuli (microwave irradiation, ultrasound, and conventional heating) were compared. 1-3 displayed homogeneous catalytic activity, leading to the formation of cyclohexanol and cyclohexanone as final products, with a high selectivity for the alcohol (up to 95%). Complex 1 exhibited the highest catalytic activity, with a total product yield of 38% (cyclohexanol + cyclohexanone) under optimized microwave-assisted conditions.
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Kurbah SD, Clovis NS. Supramolecular bimetallic vanadium(V) complex driven by hydrogen bonding and O∙∙∙O chalcogen bonding interaction: Oxidation of cyclohexane and its application toward C H bond activation. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Alikhani M, Hakimi M, Moeini K, Mashreghi M, Eigner V, Dusek M. Spectral, structural, biological and molecular docking studies of a new mixed-valence V(IV)/V(V) ofloxacin complex. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128300] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Aroylhydrazone Schiff Base Derived Cu(II) and V(V) Complexes: Efficient Catalysts towards Neat Microwave-Assisted Oxidation of Alcohols. Int J Mol Sci 2020; 21:ijms21082832. [PMID: 32325701 PMCID: PMC7215666 DOI: 10.3390/ijms21082832] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 04/12/2020] [Accepted: 04/16/2020] [Indexed: 02/07/2023] Open
Abstract
A new hexa-nuclear Cu(II) complex [Cu3(μ2-1κNO2,2κNO2-L)(μ-Cl)2(Cl)(MeOH)(DMF)2]2 (1), where H4L = N′1,N′2-bis(2-hydroxybenzylidene)oxalohydrazide, was synthesized and fully characterized by IR spectroscopy, ESI-MS, elemental analysis, and single crystal X-ray diffraction. Complex 1 and the dinuclear oxidovanadium(V) one [{VO(OEt)(EtOH)}2(1κNO2,2κNO2-L)]·2H2O (2) were used as catalyst precursors for the neat oxidation of primary (cinnamyl alcohol) and secondary (1-phenyl ethanol, benzhydrol) benzyl alcohols and of the secondary aliphatic alcohol cyclohexanol, under microwave irradiation using tert-butyl hydroperoxide (TBHP) as oxidant. Oxidations proceed via radical mechanisms. The copper(II) compound 1 exhibited higher catalytic activity than the vanadium(V) complex 2 for all the tested alcohol substrates. The highest conversion was found for 1-phenylethanol, yielding 95.3% of acetophenone in the presence of 1 and in solvent and promoter-free conditions. This new Cu(II) complex was found to exhibit higher activity under milder reaction conditions than the reported aroylhydrazone Cu(II) analogues.
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Zhou Q, Zhang R, Li D, Ding B, Zheng A, Yao Y, Gong X, Hou Z. Ionic liquid-stabilized vanadium oxo-clusters catalyzing alkane oxidation by regulating oligovanadates. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01401j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The specific ionic liquid [TBA][Pic]-stabilized vanadium oxo-clusters exist in the form of a trimer and a dimer and are highly active for catalyzing C–H bond oxidation with H2O2 as an oxidant.
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Affiliation(s)
- Qingqing Zhou
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Ran Zhang
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance
- East China Normal University
- Shanghai 200062
- China
| | - Difan Li
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Bingjie Ding
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Anna Zheng
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yefeng Yao
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance
- East China Normal University
- Shanghai 200062
- China
| | - Xueqing Gong
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Zhenshan Hou
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- China
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Sutradhar M, Roy Barman T, Alegria ECBA, Lapa HM, Guedes da Silva MFC, Pombeiro AJL. Cd( ii) coordination compounds as heterogeneous catalysts for microwave-assisted peroxidative oxidation of toluene and 1-phenylethanol. NEW J CHEM 2020. [DOI: 10.1039/d0nj01408g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cd(ii) compounds as catalysts towards microwave assisted peroxidative oxidation (with tert-butylhydroperoxide, TBHP) of toluene and 1-phenylethanol under heterogeneous conditions are explored.
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Affiliation(s)
- Manas Sutradhar
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | - Tannistha Roy Barman
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | | | - Hugo M. Lapa
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
| | | | - Armando J. L. Pombeiro
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
- Portugal
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Maurya MR, Tomar R, Avecilla F, Ribeiro N, Carvalho MFNN, Kuznetsov ML, Correia I, Pessoa JC. Trinuclear vanadium(iv) and vanadium(v) complexes derived from 2,4,6-triacetylphloroglucinol and study of their peroxidase mimicking activity. Dalton Trans 2020; 49:2589-2609. [DOI: 10.1039/c9dt04415a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solid state and solution studies of trinuclear VIVO- and VVO2-complexes and their peroxidase mimicking activity, through oxidation of dopamine to aminochrome, are reported.
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Affiliation(s)
- Mannar R. Maurya
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Reshu Tomar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Fernando Avecilla
- Grupo Xenomar
- Centro de Investigacións Científicas Avanzadas (CICA)
- Departamento de Química
- Facultade de Ciencias
- Universidade da Coruña
| | - Nádia Ribeiro
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
| | - M. Fernanda N. N. Carvalho
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
| | - Maxim L. Kuznetsov
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
| | - Isabel Correia
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
| | - João Costa Pessoa
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
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Cu(II) and Fe(III) Complexes Derived from N-Acetylpyrazine-2-Carbohydrazide as Efficient Catalysts Towards Neat Microwave Assisted Oxidation of Alcohols. Catalysts 2019. [DOI: 10.3390/catal9121053] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The mononuclear Cu(II) complex [Cu((kNN′O-HL)(H2O)2] (1) was synthesized using N-acetylpyrazine-2-carbohydrazide (H2L) and characterized by elemental analysis, IR spectroscopy, ESI-MS and single crystal X-ray crystallography. Two Fe(III) complexes derived from the same ligand viz, mononuclear [Fe((kNN′O-HL)Cl2] (2) and the binuclear [Fe(kNN′O-HL)Cl(μ-OMe)]2 (3) (synthesized as reported earlier), were also used in this study. The catalytic activity of these three complexes (1–3) was examined towards the oxidation of alcohols using tert-butyl hydroperoxide (TBHP) as oxidising agent under solvent-free microwave irradiation conditions. Primary and secondary benzyl alcohols (benzyl alcohol and 1-phenylethanol), and secondary aliphatic alcohols (cyclohexanol) were used as model substrates for this study. A comparison of their catalytic efficiency was performed. Complex 1 exhibited the highest activity in the presence of TEMPO as promoter for the oxidation of 1-phenylethanol with a maximum yield of 91.3% of acetophenone.
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Maurya MR, Sarkar B, Kumar A, Ribeiro N, Miliute A, Pessoa JC. New thiosemicarbazide and dithiocarbazate based oxidovanadium(iv) and dioxidovanadium(v) complexes. Reactivity and catalytic potential. NEW J CHEM 2019. [DOI: 10.1039/c9nj01486a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The new thiosemicarbazide and dithiocarbazate based vanadium complexes show remarkable catalytic potential for oxidation of alcohols and simple arenes.
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Affiliation(s)
- Mannar R. Maurya
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247 667
- India
| | - Bithika Sarkar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247 667
- India
| | - Amit Kumar
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade Técnica de Lisboa
- 1049-001 Lisboa
| | - Nádia Ribeiro
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade Técnica de Lisboa
- 1049-001 Lisboa
| | - Aistè Miliute
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade Técnica de Lisboa
- 1049-001 Lisboa
| | - João Costa Pessoa
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade Técnica de Lisboa
- 1049-001 Lisboa
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