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Ferraz-Caetano J, Teixeira F, Cordeiro MNDS. Systematic Development of Vanadium Catalysts for Sustainable Epoxidation of Small Alkenes and Allylic Alcohols. Int J Mol Sci 2023; 24:12299. [PMID: 37569673 PMCID: PMC10418365 DOI: 10.3390/ijms241512299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/27/2023] [Accepted: 07/29/2023] [Indexed: 08/13/2023] Open
Abstract
The catalytic epoxidation of small alkenes and allylic alcohols includes a wide range of valuable chemical applications, with many works describing vanadium complexes as suitable catalysts towards sustainable process chemistry. But, given the complexity of these mechanisms, it is not always easy to sort out efficient examples for streamlining sustainable processes and tuning product optimization. In this review, we provide an update on major works of tunable vanadium-catalyzed epoxidations, with a focus on sustainable optimization routes. After presenting the current mechanistic view on vanadium catalysts for small alkenes and allylic alcohols' epoxidation, we argue the key challenges in green process development by highlighting the value of updated kinetic and mechanistic studies, along with essential computational studies.
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Affiliation(s)
- José Ferraz-Caetano
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, S/N, 4169-007 Porto, Portugal;
| | - Filipe Teixeira
- CQUM, Centre of Chemistry, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal;
| | - Maria Natália Dias Soeiro Cordeiro
- LAQV-REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, S/N, 4169-007 Porto, Portugal;
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2
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Masteri-Farahani M, Rahimi M, Hosseini MS. Heterogenization of porphyrin complexes within the nanocages of SBA-16: New efficient and stable catalysts for the epoxidation of olefins. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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3
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Biomimetic Oxidation of Benzofurans with Hydrogen Peroxide Catalyzed by Mn(III) Porphyrins. Catalysts 2020. [DOI: 10.3390/catal10010062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The modelling of metabolic activation of the benzofuran nucleus is important to obtain eco-sustainable degradation methods and to understand the related mechanisms. The present work reports the catalytic oxidation of benzofuran, 2-methylbenzofuran, and 3-methylbenzofuran by hydrogen peroxide, at room temperature, in the presence of different Mn(III) porphyrins as models of cytochrome P450 enzymes. Conversions above 95% were attained for all the substrates. The key step is the formation of epoxides, which undergo different reaction pathways depending on factors, such as the position of the methyl group and the reaction and work-up conditions used.
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Second-Generation Manganese(III) Porphyrins Bearing 3,5-Dichloropyridyl Units: Innovative Homogeneous and Heterogeneous Catalysts for the Epoxidation of Alkenes. Catalysts 2019. [DOI: 10.3390/catal9110967] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The synthesis, characterisation and homogeneous catalytic oxidation results of two manganese(III) porphyrins of the so-called second-generation of metalloporphyrin catalysts, containing one or four 3,5-dichloropyridyl substituents at the meso positions are reported for the first time. The catalytic efficiency of these novel manganese(III) porphyrins was evaluated in the oxidation of cyclooctene and styrene using aqueous hydrogen peroxide as the oxidant, under homogeneous conditions. High conversions were obtained in the presence of both catalysts, obtaining the corresponding epoxide as the major product. The asymmetric metalloporphyrin, chloro[5,10,15-tris(2,6-dichlorophenyl)-20-(3,5-dichloropyridin-4-yl)porphyrinate]manganese(III), CAT-4, evidences a similar activity to that obtained with the well-known and highly efficient second-generation metalloporphyrin catalyst, chloro[5,10,15,20-tetrakis(2,6-dichlorophenyl)porphyrinate]manganese(III), CAT-2. CAT-4 was covalently attached onto Merrifield resin and 3-bromopropylsilica supports. The solid materials obtained were characterized by several techniques including diffuse reflectance, UV—VIS spectrophotometry, SEM and XPS. The catalytic results for the oxidation of cyclooctene and styrene using the immobilized catalysts are also presented. The Merrifield-supported catalyst showed to be very efficient, leading to five catalytic cycles in the oxidation of cyclooctene, using tert-butyl hydroperoxide as the oxidant.
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Calvete MJF, Piñeiro M, Dias LD, Pereira MM. Hydrogen Peroxide and Metalloporphyrins in Oxidation Catalysis: Old Dogs with Some New Tricks. ChemCatChem 2018. [DOI: 10.1002/cctc.201800587] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Mário J. F. Calvete
- Centro de Química de Coimbra (CQC); Department of Chemistry; University of Coimbra; Rua Larga 3004-535 Coimbra Portugal
| | - Marta Piñeiro
- Centro de Química de Coimbra (CQC); Department of Chemistry; University of Coimbra; Rua Larga 3004-535 Coimbra Portugal
| | - Lucas D. Dias
- Centro de Química de Coimbra (CQC); Department of Chemistry; University of Coimbra; Rua Larga 3004-535 Coimbra Portugal
| | - Mariette M. Pereira
- Centro de Química de Coimbra (CQC); Department of Chemistry; University of Coimbra; Rua Larga 3004-535 Coimbra Portugal
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Farhadian A, Gol Afshani MB, Babaei Miyardan A, Nabid MR, Safari N. A Facile and Green Route for Conversion of Bifunctional Epoxide and Vegetable Oils to Cyclic Carbonate: A Green Route to CO2 Fixation. ChemistrySelect 2017. [DOI: 10.1002/slct.201601891] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Abdolreza Farhadian
- Department of Chemistry and Petroleum; Faculty of Sciences; Shahid Beheshti University; Evin Tehran 19839-6313 Iran
| | - Meisam Babapour Gol Afshani
- Department of Chemistry and Petroleum; Faculty of Sciences; Shahid Beheshti University; Evin Tehran 19839-6313 Iran
| | - Ahmad Babaei Miyardan
- Department of Chemistry and Petroleum; Faculty of Sciences; Shahid Beheshti University; Evin Tehran 19839-6313 Iran
| | - Mohammad Reza Nabid
- Department of Chemistry and Petroleum; Faculty of Sciences; Shahid Beheshti University; Evin Tehran 19839-6313 Iran
| | - Nasser Safari
- Department of Chemistry and Petroleum; Faculty of Sciences; Shahid Beheshti University; Evin Tehran 19839-6313 Iran
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8
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Zhou WY, Tian P, Chen Y, He MY, Chen Q, Chen ZX. Effect of L-cysteine on the oxidation of cyclohexane catalyzed by manganeseporphyrin. Bioorg Med Chem Lett 2015; 25:2356-9. [PMID: 25937009 DOI: 10.1016/j.bmcl.2015.04.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 03/30/2015] [Accepted: 04/06/2015] [Indexed: 11/24/2022]
Abstract
Effect of L-cysteine as the cocatalyst on the oxidation of cyclohexane by tert-butylhydroperoxide (TBHP) catalyzed by manganese tetraphenylporphyrin (MnTPP) has been investigated. The results showed that L-cysteine could moderately improve the catalytic activity of MnTPP and significantly increase the selectivity of cyclohexanol. Different from imidazole and pyridine, the L-cysteine may perform dual roles in the catalytic oxidation of cyclohexane. Besides as the axial ligand for MnTPP, the L-cysteine could also react with cyclohexyl peroxide formed as the intermediate to produce alcohol as the main product.
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Affiliation(s)
- Wei-You Zhou
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China; R&D Center, Jiangsu Yabang Pharmaceutical Group, Changzhou 213200, China
| | - Peng Tian
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China
| | - Yong Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China
| | - Ming-Yang He
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China.
| | - Qun Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China
| | - Zai Xin Chen
- R&D Center, Jiangsu Yabang Pharmaceutical Group, Changzhou 213200, China
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9
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Birin KP, Gorbunova YG, Tsivadze AY. New approach for post-functionalization of meso-formylporphyrins. RSC Adv 2015. [DOI: 10.1039/c5ra13532j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An approach for the transformation of formyl groups into areneimidazoles at a porphyrin substrate is developed, allowing straightforward design of new polytopic porphyrinoid compounds.
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Affiliation(s)
- Kirill P. Birin
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS
- Moscow, 119071
- Russia
| | - Yulia G. Gorbunova
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS
- Moscow, 119071
- Russia
- N.S. Kurnakov Institute of General and Inorganic Chemistry RAS
- Moscow
| | - Aslan Yu. Tsivadze
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS
- Moscow, 119071
- Russia
- N.S. Kurnakov Institute of General and Inorganic Chemistry RAS
- Moscow
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10
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Haber A, Gross Z. Catalytic antioxidant therapy by metallodrugs: lessons from metallocorroles. Chem Commun (Camb) 2015; 51:5812-27. [DOI: 10.1039/c4cc08715a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This article provides a perspective on the utility of metal-based catalytic antioxidants for disease prevention or treatment, with focus on their mode of action and its dependence (DCA) or independence (ICA) on the involvement of cofactors.
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Affiliation(s)
- Adi Haber
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Technion City
- Israel
| | - Zeev Gross
- Schulich Faculty of Chemistry
- Technion – Israel Institute of Technology
- Technion City
- Israel
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11
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Limberger J, Leal BC, Monteiro AL, Dupont J. Charge-tagged ligands: useful tools for immobilising complexes and detecting reaction species during catalysis. Chem Sci 2014; 6:77-94. [PMID: 28553458 PMCID: PMC5424467 DOI: 10.1039/c4sc02151g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 08/06/2014] [Indexed: 11/21/2022] Open
Abstract
A critical overview is presented on the use of charged tagged ligands (CTLs) as immobilising agents in organometallic catalysis and as probes for studying mechanisms through electrospray ionisation mass spectrometry (ESI-MS) based on the most recent literature.
In recent years, charge-tagged ligands (CTLs) have become valuable tools in organometallic catalysis. Insertion of an ionic side chain into the molecular skeleton of a known ligand has become a useful protocol for anchoring ligands, and consequently catalysts, in polar and ionic liquid phases. In addition, the insertion of a cationic moiety into a ligand is a powerful tool that can be used to detect reaction intermediates in organometallic catalysis through electrospray ionisation mass spectrometry (ESI-MS) experiments. The insertion of an ionic tag ensures the charge in the intermediates independently of the ESI-MS. For this reason, these ligands have been used as ionic probes in mechanistic studies for several catalytic reactions. Here, we summarise selected examples on the use of CTLs as immobilising agents in organometallic catalysis and as probes for studying mechanisms through ESI-MS.
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Affiliation(s)
- Jones Limberger
- Laboratory of Molecular Catalysis , Institute of Chemistry - UFRGS , Av. Bento Gonçalves 9500, 91501-970, CP 15003 , Porto Alegre , RS , Brazil
| | - Bárbara C Leal
- Laboratory of Molecular Catalysis , Institute of Chemistry - UFRGS , Av. Bento Gonçalves 9500, 91501-970, CP 15003 , Porto Alegre , RS , Brazil
| | - Adriano L Monteiro
- Laboratory of Molecular Catalysis , Institute of Chemistry - UFRGS , Av. Bento Gonçalves 9500, 91501-970, CP 15003 , Porto Alegre , RS , Brazil
| | - Jairton Dupont
- Laboratory of Molecular Catalysis , Institute of Chemistry - UFRGS , Av. Bento Gonçalves 9500, 91501-970, CP 15003 , Porto Alegre , RS , Brazil .,School of Chemistry , University of Nottingham , University Park , Nottingham , NG7 2RD , UK .
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12
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Ramos CIV, Pereira PMR, Santana-Marques MG, De Paula R, Simões MMQ, Neves MGPMS, Cavaleiro JAS. Imidazole and imidazolium porphyrins: gas-phase chemistry of multicharged ions. JOURNAL OF MASS SPECTROMETRY : JMS 2014; 49:371-379. [PMID: 24809898 DOI: 10.1002/jms.3350] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 02/12/2014] [Accepted: 02/16/2014] [Indexed: 06/03/2023]
Abstract
Electrospray ionization mass spectrometry/mass spectrometry in the positive ion mode was used to investigate the gas-phase chemistry of multicharged ions from solutions of porphyrins with 1,3-dimethylimidazolium-2-yl (DMIM) and 1-methylimidazol-2-yl (MIm) meso-substituents. The studied compounds include two free bases and 12 complexes with transition metals (Cu(II), Zn(II), Mn(III), and Fe(III)). The observed multicharged ions are either preformed or formed during the electrospraying process by reduction or protonation and comprise closed-shell and hypervalent mono-radical and bi-radical ions. The observed extensive and abundant fragmentation of the DMIM and MIm meso-substituents is a characteristic feature of these porphyrins. Fragments with the same mass values can be lost from the meso-substituents either as charged or neutral species and from closed-shell and hypervalent radical ions. Reduction processes are observed for both the free bases and the metallated DMIM porphyrins and occur predominantly by formation of hypervalent radicals that fragment, at low energy collisions, by loss of methyl radicals with formation of the corresponding MIm functionalities. These findings confirm that, when using electrospray ionization, reduction is an important characteristic of cationic meso-substituted tetrapyrrolic macrocycles, always occurring when delocalization of the formed hypervalent radicals is possible. For the Fe(III) and Mn(III) complexes, reduction of the metal centers is also observed as the predominant fragmentation of the corresponding reduced ions through losses of charged fragments testifies. The fragmentation of the closed-shell ions formed by protonation of the MIm porphyrins mirrors the fragmentation of the closed-shell ions of their DMIM counterparts.
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Affiliation(s)
- Catarina I V Ramos
- Mass Spectrometry Laboratory, QOPNA, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
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Habibi D, Faraji A, Arshadi M, Veisi H, Gil A. Manganese nanocatalyst and N-hydroxyphthalimide as an efficient catalytic system for selective oxidation of ethylbenzene, cyclohexene and oximes under aerobic condition. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2013.10.023] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
Metalloporphyrins (MPs) are known to catalyze in vitro a broad range of
cytochrome P450-mediated reactions occurring in vivo. Most of the
biomimetic research using MPs in oxidative catalysis has been directed towards
the oxidation of organic compounds presenting significant reactivity features in
one functional group. Much less effort has been made to imitate the oxidation of
more complex molecules, with a range of functionalities, such as drugs or other
xenobiotics. By varying the structure of the porphyrin, the metal ion, the
oxidant, and the reaction conditions, it is possible to modulate the
regioselectivity of the oxidation reactions. Recently, and along with studies on
the synthesis and reactivity of porphyrins, chlorins, and phthalocyanines, our
group was able to develop an interesting line of research in the field of
biomimetic oxidation of organic compounds using environmentally benign hydrogen
peroxide as oxidant and Mn(III) or Fe(III) porphyrin complexes as catalysts. The
more up to date results obtained in such work are reviewed here.
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15
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Li Y, Zhou XT, Ji HB. Cocatalytic effect of cobalt acetate on aerobic cyclohexene oxidation catalyzed by manganese porphyrin. CATAL COMMUN 2012. [DOI: 10.1016/j.catcom.2012.07.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Simões MM, De Paula R, Neves MGP, Cavaleiro JA. Metalloporphyrins in the biomimetic oxidative valorization of natural and other organic substrates. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s108842460900070x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Cheap and abundant natural products can be transformed into products of higher commercial value. One of the approaches for the functionalization of organic compounds is their oxidation in the presence of an oxygen atom donor, under the influence of a suitable catalyst. Metalloporphyrins, with structures based on the well known meso-tetraphenylporphyrin (TPPH2), are amongst the catalysts commonly studied and have demonstrated to be efficient in the oxygenation of organic compounds. These transformations have been studied in the presence of different oxygen atom donors. However, our biomimetic oxidative approach is based on the use of clean and environmentally benign hydrogen peroxide in the presence of metalloporphyrins. This approach will be outlined in this review.
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Affiliation(s)
- Mário M.Q. Simões
- Department of Chemistry and QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Rodrigo De Paula
- Department of Chemistry and QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal
| | | | - José A.S. Cavaleiro
- Department of Chemistry and QOPNA, University of Aveiro, 3810-193 Aveiro, Portugal
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Neves CMB, Simões MMQ, Domíngues MM, Santos ICMS, Neves MPMS, Paz FAA, Silva AMS, Cavaleiro JAS. Oxidation of diclofenac catalyzed by manganese porphyrins: synthesis of novel diclofenac derivatives. RSC Adv 2012. [DOI: 10.1039/c2ra20801f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Machado AE, Gomes WR, Araújo DM, Miglio HS, Ueno LT, Paula RD, Cavaleiro JA, Neto NMB. Synthesis and spectroscopic characterization of two tetrasubstituted cationic porphyrin derivatives. Molecules 2011; 16:5807-21. [PMID: 21743388 PMCID: PMC6264253 DOI: 10.3390/molecules16075807] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2011] [Revised: 07/06/2011] [Accepted: 07/07/2011] [Indexed: 11/21/2022] Open
Abstract
An imidazolium tetrasubstituted cationic porphyrin derivative (the free base and its Zn(II) complex) with five-membered heterocyclic groups in the meso-positions were synthesized using microwave irradiation, and the compounds obtained characterized by 1H-NMR and mass spectrometry. We observed that under microwave irradiation the yield is similar to when the synthesis is performed under conventional heating, however, the time required to prepare the porphyrins decreases enormously. In order to investigate the electronic state of these compounds, we employed UV-Vis and fluorescence spectroscopy combined with quantum chemical calculations. The results reveal the presence, in both compounds, of a large number of electronic states involving the association between the Soret and a blue-shifted band. The Soret band in both compounds also shows a considerable solvent dependence. As for emission, these compounds present low quantum yield at room temperature and no solvent influence on the fluorescence spectra was observed.
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Affiliation(s)
- Antonio E.H. Machado
- Laboratório de Fotoquímica, Instituto de Química, Universidade Federal de Uberlândia, P.O. Box 593, CEP 38400-902 Uberlândia, Minas Gerais, Brazil
- Author to whom correspondence should be addressed; ; Tel.: +55-34-3239-4428; Fax: +55-34-3239-4208
| | - Weverson R. Gomes
- Laboratório de Fotoquímica, Instituto de Química, Universidade Federal de Uberlândia, P.O. Box 593, CEP 38400-902 Uberlândia, Minas Gerais, Brazil
| | - Diesley M.S. Araújo
- Laboratório de Fotoquímica, Instituto de Química, Universidade Federal de Uberlândia, P.O. Box 593, CEP 38400-902 Uberlândia, Minas Gerais, Brazil
| | - Hércules S. Miglio
- Centro de Ciências Agrárias, Universidade Federal do Espírito Santo, Alegre, Espírito Santo, Brazil;
| | - Leonardo T. Ueno
- Faculdade de Ciências Integradas do Pontal, Universidade Federal de Uberlândia, Ituiutaba, Minas Gerais, Brazil;
| | - Rodrigo De Paula
- Centro de Formação de Professores, Universidade Federal do Recôncavo da Bahia, Amargosa, Bahia, Brazil;
- Departamento de Química, Universidade de Aveiro, Aveiro, Portugal;
| | | | - Newton M. Barbosa Neto
- Instituto de Física, Universidade Federal de Uberlândia, P.O. Box 593; CEP 38400-902 Uberlândia, Minas Gerais, Brazil;
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De Paula R, Simões MM, Neves MGP, Cavaleiro JA. Oxidation of styrene and of some derivatives with H2O2 catalyzed by novel imidazolium-containing manganese porphyrins: A mechanistic and thermodynamic interpretation. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcata.2011.05.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Neves CM, Simões MM, Santos IC, Domingues FM, Neves MGP, Almeida Paz FA, Silva AM, Cavaleiro JA. Oxidation of caffeine with hydrogen peroxide catalyzed by metalloporphyrins. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.03.139] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Pires SMG, Paula RD, Simões MMQ, Silva AMS, Domingues MRM, Santos ICMS, Vargas MD, Ferreira VF, Neves MGPMS, Cavaleiro JAS. Novel biomimetic oxidation of lapachol with H2O2 catalysed by a manganese(iii) porphyrin complex. RSC Adv 2011. [DOI: 10.1039/c1ra00578b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Highly efficient aerobic oxidation of oximes to carbonyl compounds catalyzed by metalloporphyrins in the presence of benzaldehyde. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2009.11.078] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Zhou XT, Tang QH, Ji HB. Remarkable enhancement of aerobic epoxidation reactivity for olefins catalyzed by μ-oxo-bisiron(III) porphyrins under ambient conditions. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.09.061] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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