1
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Marques HM. The inorganic chemistry of the cobalt corrinoids - an update. J Inorg Biochem 2023; 242:112154. [PMID: 36871417 DOI: 10.1016/j.jinorgbio.2023.112154] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 01/23/2023] [Accepted: 01/26/2023] [Indexed: 02/05/2023]
Abstract
The inorganic chemistry of the cobalt corrinoids, derivatives of vitamin B12, is reviewed, with particular emphasis on equilibrium constants for, and kinetics of, their axial ligand substitution reactions. The role the corrin ligand plays in controlling and modifying the properties of the metal ion is emphasised. Other aspects of the chemistry of these compounds, including their structure, corrinoid complexes with metals other than cobalt, the redox chemistry of the cobalt corrinoids and their chemical redox reactions, and their photochemistry are discussed. Their role as catalysts in non-biological reactions and aspects of their organometallic chemistry are briefly mentioned. Particular mention is made of the role that computational methods - and especially DFT calculations - have played in developing our understanding of the inorganic chemistry of these compounds. A brief overview of the biological chemistry of the B12-dependent enzymes is also given for the reader's convenience.
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Affiliation(s)
- Helder M Marques
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa.
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2
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Kumar A, Yang X, Li J, Lewis JC. First and second sphere interactions accelerate non-native N-alkylation catalysis by the thermostable, methanol-tolerant B 12-dependent enzyme MtaC. Chem Commun (Camb) 2023; 59:4798-4801. [PMID: 37000588 PMCID: PMC10134074 DOI: 10.1039/d3cc01071f] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
Abstract
The corrinoid protein MtaC, which is natively involved in methyl transferase catalysis, catalyzes N-alkylation of aniline using ethyl diazoacetate. Our results show how the native preference of B12 scaffolds for radical versus polar chemistry translates to non-native catalysis, which could guide selection of B12-dependent proteins for biocatalysis. MtaC also has high thermal stability and organic solvent tolerance, remaining folded even in pure methanol.
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Affiliation(s)
- Amardeep Kumar
- Department of Chemistry, Indiana University, Bloomington, IN, 47405, USA.
| | - Xinhang Yang
- Department of Chemistry, Indiana University, Bloomington, IN, 47405, USA.
| | - Jianbin Li
- Department of Chemistry, Indiana University, Bloomington, IN, 47405, USA.
| | - Jared C Lewis
- Department of Chemistry, Indiana University, Bloomington, IN, 47405, USA.
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3
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Cheng J, Shiota Y, Yamasaki M, Izukawa K, Tachi Y, Yoshizawa K, Shimakoshi H. Mechanistic Study for the Reaction of B 12 Complexes with m-Chloroperbenzoic Acid in Catalytic Alkane Oxidations. Inorg Chem 2022; 61:9710-9724. [PMID: 35696150 DOI: 10.1021/acs.inorgchem.2c01174] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The oxidation of alkanes with m-chloroperbenzoic acid (mCPBA) catalyzed by the B12 derivative, heptamethyl cobyrinate, was investigated under several conditions. During the oxidation of cyclohexane, heptamethyl cobyrinate works as a catalyst to form cyclohexanol and cyclohexanone at a 0.67 alcohol to ketone ratio under aerobic conditions in 1 h. The reaction rate shows a first-order dependence on the [catalyst] and [mCPBA] while being independent of [cyclohexane]; Vobs = k2[catalyst][mCPBA]. The kinetic deuterium isotope effect was determined to be 1.86, suggesting that substrate hydrogen atom abstraction is not dominantly involved in the rate-determining step. By the reaction of mCPBA and heptamethyl cobyrinate at low temperature, the corresponding cobalt(III)acylperoxido complex was formed which was identified by UV-vis, IR, ESR, and ESI-MS studies. A theoretical study suggested the homolysis of the O-O bond in the acylperoxido complex to form Co(III)-oxyl (Co-O•) and the m-chlorobenzoyloxyl radical. Radical trapping experiments using N-tert-butyl-α-phenylnitrone and CCl3Br, product analysis of various alkane oxidations, and computer analysis of the free energy for radical abstraction from cyclohexane by Co(III)-oxyl suggested that both Co(III)-oxyl and the m-chlorobenzoyloxyl radical could act as hydrogen-atom transfer reactants for the cyclohexane oxidation.
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Affiliation(s)
- Jiamin Cheng
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744, Nishi-ku, Motooka, Fukuoka 819-0395, Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering, Kyushu University, 744, Nishi-ku, Motooka, Fukuoka 819-0395, Japan
| | - Mikako Yamasaki
- Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Kureha Izukawa
- Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Yoshimitsu Tachi
- Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering, Kyushu University, 744, Nishi-ku, Motooka, Fukuoka 819-0395, Japan
| | - Hisashi Shimakoshi
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744, Nishi-ku, Motooka, Fukuoka 819-0395, Japan
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4
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Wdowik T, Gryko D. C–C Bond Forming Reactions Enabled by Vitamin B 12─Opportunities and Challenges. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01596] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Tomasz Wdowik
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Dorota Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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5
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Abstract
In recent years, visible light-induced transition metal catalysis has emerged as a new paradigm in organic photocatalysis, which has led to the discovery of unprecedented transformations as well as the improvement of known reactions. In this subfield of photocatalysis, a transition metal complex serves a double duty by harvesting photon energy and then enabling bond forming/breaking events mostly via a single catalytic cycle, thus contrasting the established dual photocatalysis in which an exogenous photosensitizer is employed. In addition, this approach often synergistically combines catalyst-substrate interaction with photoinduced process, a feature that is uncommon in conventional photoredox chemistry. This Review describes the early development and recent advances of this emerging field.
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Affiliation(s)
- Kelvin Pak Shing Cheung
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Sumon Sarkar
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Vladimir Gevorgyan
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
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6
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Turkowska J, Durka J, Ociepa M, Gryko D. Reversal of regioselectivity in reactions of donor-acceptor cyclopropanes with electrophilic olefins. Chem Commun (Camb) 2021; 58:509-512. [PMID: 34897317 DOI: 10.1039/d1cc05330b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Reactivity of donor-acceptor cyclopropanes towards nucleophiles and electrophiles is determined by the specific philicity of the carbon atoms originating from the strong polarization of the central C-C bond. Herein, we report that vitamin B12 catalysis enables the transformation of an initially electrophilic center into a nucleophilic radical that reacts with SOMOphiles. This radical-based strategy reverses the standard regioselectivity and thus complements the classical approaches.
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Affiliation(s)
- Joanna Turkowska
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Jakub Durka
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Michał Ociepa
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Dorota Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
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Dworakowski K, Pisarek S, Hassan S, Gryko D. Vinyl Azides as Radical Acceptors in the Vitamin B 12-Catalyzed Synthesis of Unsymmetrical Ketones. Org Lett 2021; 23:9068-9072. [PMID: 34784475 PMCID: PMC8650103 DOI: 10.1021/acs.orglett.1c03321] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Indexed: 11/29/2022]
Abstract
Vinyl azides are very reactive species and as such are useful building blocks, in particular, in the synthesis of N-heterocycles. They can also serve as precursors of ketones. These form in reactions of vinyl azides with nucleophiles or radicals. We have found, however, that under light irradiation vitamin B12 catalyzes the reaction of vinyl azides with electrophiles to afford unsymmetrical carbonyl compounds in decent yields. Mechanistic studies revealed that alkyl radicals are key intermediates in this transformation.
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Affiliation(s)
| | | | - Sidra Hassan
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Dorota Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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8
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Wierzba AJ, Wincenciuk A, Karczewski M, Vullev VI, Gryko D. meso
‐Modified Cobalamins: Synthesis, Structure, and Properties. Chemistry 2018; 24:10344-10356. [DOI: 10.1002/chem.201801807] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Aleksandra J. Wierzba
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Aleksandra Wincenciuk
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
- Department of Chemistry University of Warsaw Pasteura 1 02-093 Warsaw Poland
| | - Maksymilian Karczewski
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Valentine I. Vullev
- Bioengineering, Chemistry, Biochemistry, and Materials Science and Engineering University of California, Riverside Materials Science and Engineering Building, Room 235 Riverside CA 92521 USA
| | - Dorota Gryko
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
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9
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Proinsias KÓ, Jackowska A, Radzewicz K, Giedyk M, Gryko D. Vitamin B12 Catalyzed Atom Transfer Radical Addition. Org Lett 2017; 20:296-299. [DOI: 10.1021/acs.orglett.7b03699] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keith ó Proinsias
- Institute of Organic Chemistry PAS, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | | | | | - Maciej Giedyk
- Institute of Organic Chemistry PAS, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Dorota Gryko
- Institute of Organic Chemistry PAS, Kasprzaka 44/52, 01-224 Warsaw, Poland
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