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Sathyan A, Loman T, Deng L, Palmans ARA. Amphiphilic polymeric nanoparticles enable homogenous rhodium-catalysed NH insertion reactions in living cells. NANOSCALE 2023. [PMID: 37470373 DOI: 10.1039/d3nr02581k] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Rh-catalysed NH carbene insertion reactions were exported to living cells with help of amphiphilic polymeric nanoparticles. Hereto, hydrophobic dirhodium carboxylate catalysts were efficiently encapsulated in amphiphilic polymeric nanoparticles comprising dodecyl and Jeffamine as side grafts. The developed catalytic nanoparticles promoted NH carbene insertions between α-keto diazocarbenes and 2,3-diaminonaphthalene, followed by intramolecular cyclisation to form fluorescent or biologically active benzoquinoxalines. These reactions were studied in reaction media of varying complexity. The best-performing catalyst was exported to HeLa cells, where fluorescent and cytotoxic benzoquinoxalines were synthesized in situ at low catalyst loading within a short time. Most of the developed bioorthogonal transition metal catalysts reported to date are easily deactivated by the reactive biomolecules in living cells, limiting their applications. The high catalytic efficiency of the Rh-based polymeric nanoparticles reported here opens the door to expanding the repertoire of bioorthogonal reactions and is therefore promising for biomedical applications.
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Affiliation(s)
- Anjana Sathyan
- Institute for Complex Molecular Systems, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, The Netherlands.
| | - Tessa Loman
- Institute for Complex Molecular Systems, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, The Netherlands.
| | - Linlin Deng
- Institute for Complex Molecular Systems, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, The Netherlands.
| | - Anja R A Palmans
- Institute for Complex Molecular Systems, Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, The Netherlands.
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2
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Gutiérrez S, Tomás-Gamasa M, Mascareñas JL. Organometallic catalysis in aqueous and biological environments: harnessing the power of metal carbenes. Chem Sci 2022; 13:6478-6495. [PMID: 35756533 PMCID: PMC9172117 DOI: 10.1039/d2sc00721e] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 05/15/2022] [Indexed: 11/24/2022] Open
Abstract
Translating the power of transition metal catalysis to the native habitats of enzymes can significantly expand the possibilities of interrogating or manipulating natural biological systems, including living cells and organisms. This is especially relevant for organometallic reactions that have shown great potential in the field of organic synthesis, like the metal-catalyzed transfer of carbenes. While, at first sight, performing metal carbene chemistry in aqueous solvents, and especially in biologically relevant mixtures, does not seem obvious, in recent years there has been a growing number of reports demonstrating the feasibility of the task. Either using small molecule metal catalysts or artificial metalloenzymes, a number of carbene transfer reactions that tolerate aqueous and biorelevant media are being developed. This review intends to summarize the most relevant contributions, and establish the state of the art in this emerging research field.
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Affiliation(s)
- Sara Gutiérrez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15705 Santiago de Compostela Spain
| | - María Tomás-Gamasa
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15705 Santiago de Compostela Spain
| | - José Luis Mascareñas
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela 15705 Santiago de Compostela Spain
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3
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Asymmetric intermolecular cyclopropanation of alkenes and N–H insertion of aminoesters by diazoacetylferrocene catalyzed by ruthenium and iron porphyrins. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Cailler LP, Kroitor AP, Martynov AG, Gorbunova YG, Sorokin AB. Selective carbene transfer to amines and olefins catalyzed by ruthenium phthalocyanine complexes with donor substituents. Dalton Trans 2021; 50:2023-2031. [PMID: 33443525 DOI: 10.1039/d0dt04090h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electron-rich ruthenium phthalocyanine complexes were evaluated in carbene transfer reactions from ethyl diazoacetate (EDA) to aromatic and aliphatic olefins as well as to a wide range of aromatic, heterocyclic and aliphatic amines for the first time. It was revealed that the ruthenium octabutoxyphthalocyanine carbonyl complex [(BuO)8Pc]Ru(CO) is the most efficient catalyst converting electron-rich and electron-poor aromatic olefins to cyclopropane derivatives with high yields (typically 80-100%) and high TON (up to 1000) under low catalyst loading and nearly equimolar substrate/EDA ratio. This catalyst shows a rare efficiency in the carbene insertion into amine N-H bonds. Using a 0.05 mol% catalyst loading, a high amine concentration (1 M) and 1.1 eq. of EDA, a number of structurally divergent amines were selectively converted to mono-substituted glycine derivatives with up to quantitative yields and turnover numbers reaching 2000. High selectivity, large substrate scope, low catalyst loading and practical reaction conditions place [(BuO)8Pc]Ru(CO) among the most efficient catalysts for the carbene insertion into amines.
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Affiliation(s)
- Lucie P Cailler
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, 2 av. A. Einstein, 69626 Villeurbanne, France.
| | - Andrey P Kroitor
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leniskii pr., 31, bldg. 4, 119071 Moscow, Russia.
| | - Alexander G Martynov
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leniskii pr., 31, bldg. 4, 119071 Moscow, Russia.
| | - Yulia G Gorbunova
- A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leniskii pr., 31, bldg. 4, 119071 Moscow, Russia. and N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leniskii pr., 31, 11991 Moscow, Russia.
| | - Alexander B Sorokin
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, 2 av. A. Einstein, 69626 Villeurbanne, France.
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5
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Abstract
AbstractThe use of iron catalysis to enable reactions with diazo compounds has emerged as a valuable tool to forge carbon–carbon or carbon–heteroatom bonds. While diazo compounds are often encountered with toxic and expensive metal catalysts, such as Rh, Ru, Pd, Ir, and Cu, a resurgence of Fe catalysis has been observed. This short review will showcase and highlight the recent advances in iron-mediated reactions of diazo compounds.1 Introduction2 Insertion Reactions2.1 Insertion into B–H Bonds2.2 Insertion into Si–H Bonds2.3 Insertion into N–H Bonds2.4 Insertion into S–H bonds3 Ylide Formation and Subsequent Reactions3.1 Doyle–Kirmse Rearrangement3.2 [1,2]-Stevens and Sommelet–Hauser Rearrangements3.3 Olefination Reactions3.4 Cycloaddition Reactions3.5 gem-Difluoroalkenylation4 Three-Component Reactions5 Miscellaneous6 Conclusion
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6
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Affiliation(s)
- Vasco F. Batista
- LAQV-REQUIMTE and Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Diana C. G. A. Pinto
- LAQV-REQUIMTE and Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Artur M. S. Silva
- LAQV-REQUIMTE and Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
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7
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Cailler LP, Martynov AG, Gorbunova YG, Tsivadze AY, Sorokin AB. Carbene insertion to N–H bonds of 2-aminothiazole and 2-amino-1,3,4-thiadiazole derivatives catalyzed by iron phthalocyanine. J PORPHYR PHTHALOCYA 2019. [DOI: 10.1142/s1088424619500354] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Iron(III) phthalocyaninate decorated with crown ether substituents, [(15C5)4PcFe]Cl, efficiently catalyzed the insertion of carbene derived from ethyl diazoacetate to six amines functionalized with thiazole, thiazoline and thiadiazole heterocycles. The reactions were carried out under practical conditions using EDA:amine stoechiometric ratio with 0.05 mol% catalyst loading. Turnover numbers up to 3360 have been achieved. The aminoacid derivatives bearing heterocyclic moieties were obtained under catalytic conditions for the first time with 36–69% yields in the case of single N–H insertion products and up to 77% in the case of double N–H insertion products.
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Affiliation(s)
- Lucie P. Cailler
- Institut de Recherches sur la Catalyse et l’Environnement de Lyon, IRCELYON, UMR 5256, CNRS, Université Lyon 1, 2 av. Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Alexander G. Martynov
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr., 31, Bldg. 4, 119071, Moscow, Russia
| | - Yulia G. Gorbunova
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr., 31, Bldg. 4, 119071, Moscow, Russia
| | - Aslan Yu. Tsivadze
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr., 31, Bldg. 4, 119071, Moscow, Russia
| | - Alexander B. Sorokin
- Institut de Recherches sur la Catalyse et l’Environnement de Lyon, IRCELYON, UMR 5256, CNRS, Université Lyon 1, 2 av. Albert Einstein, 69626 Villeurbanne Cedex, France
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8
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Devi L, Shukla R, Rastogi N. Intramolecular trapping of ammonium ylides with N-benzoylbenzotriazoles in aqueous medium: direct access to the pseudoindoxyl scaffold. Org Biomol Chem 2019; 17:135-139. [PMID: 30525156 DOI: 10.1039/c8ob02683a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The present work documents an operationally simple, clean and practical method for accessing the 2,2-disubstituted indolin-3-one (pseudoindoxyl) scaffold. The rhodium carbenoid mediated reaction between N-o-alkylamino benzoylbenzotriazoles and aryl diazoacetates occurs smoothly in water and exploits the leaving group ability of the benzotriazole moiety to install the carbonyl function in the product. Other highlights of the methodology are a wide substrate scope and experimental practicality given the re-use of the benzotriazole byproduct for starting material preparation.
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Affiliation(s)
- Lalita Devi
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India.
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Brenna S, Ardizzoia GA. Carbene Transfer and Carbene Insertion Reactions Catalyzed by a Mixed-Ligand Copper(I) Complex. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800863] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Stefano Brenna
- Dipartimento di Scienza e Alta Tecnologia; Università degli Studi dell'Insubria and CIRCC; Via Valleggio 9 22100 Como Italy
| | - G. Attilio Ardizzoia
- Dipartimento di Scienza e Alta Tecnologia; Università degli Studi dell'Insubria and CIRCC; Via Valleggio 9 22100 Como Italy
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10
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Carbene Transfer Reactions Catalysed by Dyes of the Metalloporphyrin Group. Molecules 2018; 23:molecules23040792. [PMID: 29596367 PMCID: PMC6017490 DOI: 10.3390/molecules23040792] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 03/26/2018] [Accepted: 03/27/2018] [Indexed: 01/29/2023] Open
Abstract
Carbene transfer reactions are very important transformations in organic synthesis, allowing the generation of structurally challenging products by catalysed cyclopropanation, cyclopropenation, carbene C-H, N-H, O-H, S-H, and Si-H insertion, and olefination of carbonyl compounds. In particular, chiral and achiral metalloporphyrins have been successfully explored as biomimetic catalysts for these carbene transfer reactions under both homogeneous and heterogeneous conditions. In this work the use of synthetic metalloporphyrins (MPorph, M = Fe, Ru, Os, Co, Rh, Ir, Sn) as homogeneous or heterogeneous catalysts for carbene transfer reactions in the last years is reviewed, almost exclusively focused on the literature since the year 2010, except when reference to older publications was deemed to be crucial.
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11
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Álvarez M, Gava R, Rodríguez MR, Rull SG, Pérez PJ. Water as the Reaction Medium for Intermolecular C–H Alkane Functionalization in Micellar Catalysis. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03669] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- María Álvarez
- Laboratorio de Catálisis
Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación
en Química Sostenible and Departamento de Química, Universidad de Huelva, 21007 Huelva, Spain
| | - Riccardo Gava
- Laboratorio de Catálisis
Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación
en Química Sostenible and Departamento de Química, Universidad de Huelva, 21007 Huelva, Spain
| | - Manuel R. Rodríguez
- Laboratorio de Catálisis
Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación
en Química Sostenible and Departamento de Química, Universidad de Huelva, 21007 Huelva, Spain
| | - Silvia G. Rull
- Laboratorio de Catálisis
Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación
en Química Sostenible and Departamento de Química, Universidad de Huelva, 21007 Huelva, Spain
| | - Pedro J. Pérez
- Laboratorio de Catálisis
Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación
en Química Sostenible and Departamento de Química, Universidad de Huelva, 21007 Huelva, Spain
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12
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Zhou M, Zhang H, Xiong L, He Z, Wang T, Xu Y, Huang K. Fe-Porphyrin functionalized microporous organic nanotube networks and their application for the catalytic olefination of aldehydes and carbene insertion into N–H bonds. Polym Chem 2017. [DOI: 10.1039/c7py00530j] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Fe-Porphyrin functionalized microporous organic nanotubes networks were synthesized by an in situ hyper-crosslinking reaction between bottlebrush copolymers and meso-tetraphenylporphyrin iron(iii) chloride.
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Affiliation(s)
- Minghong Zhou
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- P. R. China
| | - Hui Zhang
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- P. R. China
| | - Linfeng Xiong
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- P. R. China
| | - Zidong He
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- P. R. China
| | - Tianqi Wang
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- P. R. China
| | - Yang Xu
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- P. R. China
| | - Kun Huang
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- P. R. China
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13
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Ramakrishna K, Sivasankar C. Iridium catalyzed acceptor/acceptor carbene insertion into N–H bonds in water. Org Biomol Chem 2017; 15:2392-2396. [DOI: 10.1039/c7ob00177k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Carbenes from highly stable acceptor/acceptor diazo compounds can be inserted into the N–H bonds of aromatic amines using an Ir(i) catalyst in an aqueous medium.
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Affiliation(s)
- Kankanala Ramakrishna
- Catalysis and Energy Laboratory
- Department of Chemistry
- Pondicherry University (A Central University)
- Puducherry 605014
- India
| | - Chinnappan Sivasankar
- Catalysis and Energy Laboratory
- Department of Chemistry
- Pondicherry University (A Central University)
- Puducherry 605014
- India
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14
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Marinozzi M, Pertusati F, Serpi M. λ5-Phosphorus-Containing α-Diazo Compounds: A Valuable Tool for Accessing Phosphorus-Functionalized Molecules. Chem Rev 2016; 116:13991-14055. [DOI: 10.1021/acs.chemrev.6b00373] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maura Marinozzi
- Dipartimento
di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo 1, 06123 Perugia, Italy
| | - Fabrizio Pertusati
- School
of Pharmacy and Pharmaceutical Sciences, Cardiff University, King Edward VII Avenue, Cardiff CF10 3NB, United Kingdom
| | - Michaela Serpi
- School
of Pharmacy and Pharmaceutical Sciences, Cardiff University, King Edward VII Avenue, Cardiff CF10 3NB, United Kingdom
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15
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Ramakrishna K, Thomas JM, Sivasankar C. A Green Approach to the Synthesis of α-Amino Phosphonate in Water Medium: Carbene Insertion into the N–H Bond by Cu(I) Catalyst. J Org Chem 2016; 81:9826-9835. [DOI: 10.1021/acs.joc.6b01940] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Kankanala Ramakrishna
- Catalysis and Energy Laboratory
(A Central University), Department of Chemistry Pondicherry University, Puducherry 605014, India
| | - Jisha Mary Thomas
- Catalysis and Energy Laboratory
(A Central University), Department of Chemistry Pondicherry University, Puducherry 605014, India
| | - Chinnappan Sivasankar
- Catalysis and Energy Laboratory
(A Central University), Department of Chemistry Pondicherry University, Puducherry 605014, India
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Le Maux P, Carrié D, Jéhan P, Simonneaux G. Asymmetric O–H insertion reaction of carbenoids catalyzed by chiral bicyclo bisoxazoline copper(I) and (II) complexes. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.06.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Sharon DA, Mallick D, Wang B, Shaik S. Computation Sheds Insight into Iron Porphyrin Carbenes' Electronic Structure, Formation, and N-H Insertion Reactivity. J Am Chem Soc 2016; 138:9597-610. [PMID: 27347808 DOI: 10.1021/jacs.6b04636] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Iron porphyrin carbenes constitute a new frontier of species with considerable synthetic potential. Exquisitely engineered myoglobin and cytochrome P450 enzymes can generate these complexes and facilitate the transformations they mediate. The current work harnesses density functional theoretical methods to provide insight into the electronic structure, formation, and N-H insertion reactivity of an iron porphyrin carbene, [Fe(Por)(SCH3)(CHCO2Et)](-), a model of a complex believed to exist in an experimentally studied artificial metalloenzyme. The ground state electronic structure of the terminal form of this complex is an open-shell singlet, with two antiferromagnetically coupled electrons residing on the iron center and carbene ligand. As we shall reveal, the bonding properties of [Fe(Por)(SCH3)(CHCO2Et)](-) are remarkably analogous to those of ferric heme superoxide complexes. The carbene forms by dinitrogen loss from ethyl diazoacetate. This reaction occurs preferentially through an open-shell singlet transition state: iron donates electron density to weaken the C-N bond undergoing cleavage. Once formed, the iron porphyrin carbene accomplishes N-H insertion via nucleophilic attack. The resulting ylide then rearranges, using an internal carbonyl base, to form an enol that leads to the product. The findings rationalize experimentally observed reactivity trends reported in artificial metalloenzymes employing iron porphyrin carbenes. Furthermore, these results suggest a possible expansion of enzymatic substrate scope, to include aliphatic amines. Thus, this work, among the first several computational explorations of these species, contributes insights and predictions to the surging interest in iron porphyrin carbenes and their synthetic potential.
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Affiliation(s)
- Dina A Sharon
- Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, The Hebrew University of Jerusalem , 91904, Jerusalem, Israel
| | - Dibyendu Mallick
- Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, The Hebrew University of Jerusalem , 91904, Jerusalem, Israel
| | - Binju Wang
- Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, The Hebrew University of Jerusalem , 91904, Jerusalem, Israel
| | - Sason Shaik
- Institute of Chemistry and The Lise Meitner-Minerva Center for Computational Quantum Chemistry, The Hebrew University of Jerusalem , 91904, Jerusalem, Israel
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Carrie D, Srour H, Le Maux P, Simonneaux G. Synthesis and chemical reactivity of new zinc porphyrin diazoacetates catalyzed by ruthenium and iron porphyrins. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.02.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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