1
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Zeppilli D, Madabeni A, Sancineto L, Bagnoli L, Santi C, Orian L. Role of Group 12 Metals in the Reduction of H 2O 2 by Santi's Reagent: A Computational Mechanistic Investigation. Inorg Chem 2023; 62:17288-17298. [PMID: 37769326 PMCID: PMC10598800 DOI: 10.1021/acs.inorgchem.3c02568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Indexed: 09/30/2023]
Abstract
PhSeZnCl, which is also known as Santi's reagent, can catalyze the reduction of hydrogen peroxide by thiols with a GPx-like mechanism. In this work, the first step of this catalytic cycle, i.e., the reduction of H2O2 by PhSeZnCl, is investigated in silico using state-of-the-art density functional theory calculations. Then, the role of the metal is evaluated by replacing Zn with its group 12 siblings (Cd and Hg). The thermodynamic and kinetic factors favoring Zn are elucidated. Furthermore, the role of the halogen is considered by replacing Cl with Br in all three metal compounds, and this turns out to be negligible. Finally, the overall GPx-like mechanism of PhSeZnCl and PhSeZnBr is discussed by evaluating the energetics of the mechanistic path leading to the disulfide product.
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Affiliation(s)
- Davide Zeppilli
- Dipartimento
di Scienze Chimiche, Università degli
Studi di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Andrea Madabeni
- Dipartimento
di Scienze Chimiche, Università degli
Studi di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Luca Sancineto
- Gruppo
di Catalisi Sintesi e Chimica Organica Verde Dipartimento di Scienze
Farmaceutiche, Università degli Studi
di Perugia, Via del Liceo 1, 06122 Perugia, Italy
| | - Luana Bagnoli
- Gruppo
di Catalisi Sintesi e Chimica Organica Verde Dipartimento di Scienze
Farmaceutiche, Università degli Studi
di Perugia, Via del Liceo 1, 06122 Perugia, Italy
| | - Claudio Santi
- Gruppo
di Catalisi Sintesi e Chimica Organica Verde Dipartimento di Scienze
Farmaceutiche, Università degli Studi
di Perugia, Via del Liceo 1, 06122 Perugia, Italy
| | - Laura Orian
- Dipartimento
di Scienze Chimiche, Università degli
Studi di Padova, Via Marzolo 1, 35131 Padova, Italy
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2
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Zade VM, Gangnale LD, Athawale PR, Reddy DS. Direct Deoxygenation of α-Hydroxy and α,β-Dihydroxy Ketones Using a Silyl Lithium Reagent. J Org Chem 2023; 88:14227-14235. [PMID: 37728533 DOI: 10.1021/acs.joc.3c01613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
A reliable method for the one-step direct deoxygenation of α-hydroxy ketones has been developed using a silyl lithium reagent and acetic anhydride. The method is metal-catalyst-free and does not require prefunctionalization of the hydroxy group prior to its removal. Deoxygenation of different primary, secondary, and tertiary alcohols was carried out with up to 98% isolated yield. Additionally, double deoxygenation was achieved when the present method was applied to α,β-dihydroxy ketones to access the corresponding enones in a single step.
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Affiliation(s)
- Vishal M Zade
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Laxmikant D Gangnale
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
- CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, Telangana 500007, India
| | - Paresh R Athawale
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
| | - D Srinivasa Reddy
- Organic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
- CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, Telangana 500007, India
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3
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Baidya M, Dutta J, De Sarkar S. Electrochemical Organoselenium Catalysis for the Selective Activation of Alkynes: Easy Access to Carbonyl-pyrroles/oxazoles from N-Propargyl Enamines/Amides. Org Lett 2023; 25:3812-3817. [PMID: 37196050 DOI: 10.1021/acs.orglett.3c01355] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Intramolecular electro-oxidative addition of enamines or amides to nonactivated alkynes was attained to access carbonyl-pyrroles or -oxazoles from N-propargyl derivatives. Organoselenium was employed as the electrocatalyst, which played a crucial role as a π-Lewis acid and selectively activated the alkyne for the successful nucleophilic addition. The synthetic strategy permits a wide range of substrate scope up to 93% yield. Several mechanistic experiments, including the isolation of a selenium-incorporated intermediate adduct, enlighten the electrocatalytic pathway.
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Affiliation(s)
- Mrinmay Baidya
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India
| | - Jhilik Dutta
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India
| | - Suman De Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India
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4
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5
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Affiliation(s)
- Lihao Liao
- Institute of Organic Chemistry and MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
| | - Xiaodan Zhao
- Institute of Organic Chemistry and MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
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6
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Hosten EC, Betz R. The crystal structure of benzeneseleninic acid anhydride, C 12H 10O 3Se 2. Z KRIST-NEW CRYST ST 2021. [DOI: 10.1515/ncrs-2020-0560] [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
C12H10O3Se2, triclinic, P
1
‾
$‾{1}$
(no. 2), a = 9.1794(3) Å, b = 11.5706(5) Å, c = 12.3976(5) Å, α = 85.291(2)°, β = 72.198(2)°, γ = 74.084(2)°, V = 1205.65(8) Å3, Z = 4, R
gt
(F) = 0.0275, wR
ref
(F
2) = 0.0698, T = 200 K.
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Affiliation(s)
- Eric C. Hosten
- Department of Chemistry, Nelson Mandela University, Summerstrand Campus (South), University Way , Summerstrand, PO Box 77000 , Port Elizabeth , 6031 , South Africa
| | - Richard Betz
- Department of Chemistry, Nelson Mandela University, Summerstrand Campus (South), University Way , Summerstrand, PO Box 77000 , Port Elizabeth , 6031 , South Africa
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7
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Silva MS, Alves D, Hartwig D, Jacob RG, Perin G, Lenardão EJ. Selenium‐NMR Spectroscopy in Organic Synthesis: From Structural Characterization Toward New Investigations. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000582] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Márcio S. Silva
- LASOL – CCQFA Universidade Federal de Pelotas – UFPel – P.O. Box 354 – 96010-900 Pelotas, RS Brazil
| | - Diego Alves
- LASOL – CCQFA Universidade Federal de Pelotas – UFPel – P.O. Box 354 – 96010-900 Pelotas, RS Brazil
| | - Daniela Hartwig
- LASOL – CCQFA Universidade Federal de Pelotas – UFPel – P.O. Box 354 – 96010-900 Pelotas, RS Brazil
| | - Raquel G. Jacob
- LASOL – CCQFA Universidade Federal de Pelotas – UFPel – P.O. Box 354 – 96010-900 Pelotas, RS Brazil
| | - Gelson Perin
- LASOL – CCQFA Universidade Federal de Pelotas – UFPel – P.O. Box 354 – 96010-900 Pelotas, RS Brazil
| | - Eder J. Lenardão
- LASOL – CCQFA Universidade Federal de Pelotas – UFPel – P.O. Box 354 – 96010-900 Pelotas, RS Brazil
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8
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Upadhyay A, Batabyal M, Kanika, Kumar S. Organoseleniums: Generated and Exploited in Oxidative Reactions. CHEM LETT 2020. [DOI: 10.1246/cl.200015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Aditya Upadhyay
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
| | - Monojit Batabyal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
| | - Kanika
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
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9
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Pop A, Silvestru C, Silvestru A. Organoselenium and organotellurium compounds containing chalcogen-oxygen bonds in organic synthesis or related processes. PHYSICAL SCIENCES REVIEWS 2019. [DOI: 10.1515/psr-2018-0061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Abstract
This chapter emphasizes aspects related to the role of organochalcogen (Se, Te) compounds with single E‒O and/or double E=O (E=Se, Te) bonds in organic synthesis, as reagents, intermediates, or catalysts, and it gives a larger extent mainly to data reported in the field during the last ten years. For each of these two heavier chalcogens the material is structured according to the oxidation state of the chalcogen and, for the same oxidation state, in sections dedicated to a particular type of compounds. Functionalization or cyclization reactions in which the organochalcogen compounds take part as nucleophiles, electrophiles or radicals, employed in various synthetic transformations, are discussed and, where available, the mechanistic aspects are outlined. New chiral species and new strategies were developed during last years in order to increase the yield, the reaction rate and the stereoselectivity in specific organic transformations, i.e. addition, oxidation, elimination, cyclization or rearrangement reactions. A notably attention was devoted to easily accessible and environmental friendly catalysts, re-usable and “green” solvents, as well as waste-free procedures.
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10
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Abstract
Selenium-based catalysts, including organo- and inorganoselenium ones, in organic synthesis in the recent decade are reviewed.
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Affiliation(s)
- Lixiong Shao
- College of Chemistry and Materials Engineering
- Wenzhou University
- Chashan University Town
- Wenzhou
- P. R. China
| | - Yiming Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Process
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- P. R. China
| | - Jianmei Lu
- College of Chemistry and Materials Engineering
- Wenzhou University
- Chashan University Town
- Wenzhou
- P. R. China
| | - Xuefeng Jiang
- Shanghai Key Laboratory of Green Chemistry and Chemical Process
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200062
- P. R. China
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11
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Sands KN, Tuck TA, Back TG. Cyclic Seleninate Esters, Spirodioxyselenuranes and Related Compounds: New Classes of Biological Antioxidants That Emulate Glutathione Peroxidase. Chemistry 2018. [DOI: 10.1002/chem.201800182] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Kai N. Sands
- Department of Chemistry; University of Calgary; 2500 University Drive NW Calgary Alberta T2N 1N4 Canada
| | - Tyler A. Tuck
- Department of Chemistry; University of Calgary; 2500 University Drive NW Calgary Alberta T2N 1N4 Canada
| | - Thomas G. Back
- Department of Chemistry; University of Calgary; 2500 University Drive NW Calgary Alberta T2N 1N4 Canada
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12
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Kheirabadi R, Izadyar M, Housaindokht MR. Computational Kinetic Modeling of the Catalytic Cycle of Glutathione Peroxidase Nanomimic: Effect of Nucleophilicity of Thiols on the Catalytic Activity. J Phys Chem A 2017; 122:364-374. [DOI: 10.1021/acs.jpca.7b09929] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ramesh Kheirabadi
- Department
of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, International Campus, Mashhad, Iran
| | - Mohammad Izadyar
- Department
of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
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13
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Balkrishna SJ, Kumar S, Kumar A, Panini P, Kumar S. Cinchona-Alkaloids Based Isoselenazolones: Synthesis and Their Catalytic Reactivity in Asymmetric Bromolactonization of Alkenoic Acid. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2016. [DOI: 10.1007/s40010-016-0306-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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14
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McNeil NMR, Press DJ, Mayder DM, Garnica P, Doyle LM, Back TG. Enhanced Glutathione Peroxidase Activity of Water-Soluble and Polyethylene Glycol-Supported Selenides, Related Spirodioxyselenuranes, and Pincer Selenuranes. J Org Chem 2016; 81:7884-97. [DOI: 10.1021/acs.joc.6b01593] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Nicole M. R. McNeil
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - David J. Press
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Don M. Mayder
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Pablo Garnica
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Lisa M. Doyle
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Thomas G. Back
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
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15
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Aydi R, Kammoun M. Synthesis and reactivity of two new trichloromethyl substituted dihydroisoquinoline-derived oxaziridines. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2015.1122808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Rihab Aydi
- Laboratory of Chemistry of Natural Products, Sfax University, Faculty of Science, Sfax, Tunisia
| | - Majed Kammoun
- Laboratory of Chemistry of Natural Products, Sfax University, Faculty of Science, Sfax, Tunisia
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16
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Voutyritsa E, Theodorou A, Kokotos CG. Green organocatalytic α-hydroxylation of ketones. Org Biomol Chem 2016; 14:5708-13. [DOI: 10.1039/c6ob00036c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient and green method for the α-hydroxylation of substituted ketones has been developed.
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Affiliation(s)
- Errika Voutyritsa
- Laboratory of Organic Chemistry
- Department of Chemistry
- National and Kapodestrian University of Athens
- Athens 15771
- Greece
| | - Alexis Theodorou
- Laboratory of Organic Chemistry
- Department of Chemistry
- National and Kapodestrian University of Athens
- Athens 15771
- Greece
| | - Christoforos G. Kokotos
- Laboratory of Organic Chemistry
- Department of Chemistry
- National and Kapodestrian University of Athens
- Athens 15771
- Greece
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17
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McNeil NMR, McDonnell C, Hambrook M, Back TG. Oxidation of Disulfides to Thiolsulfinates with Hydrogen Peroxide and a Cyclic Seleninate Ester Catalyst. Molecules 2015; 20:10748-62. [PMID: 26111166 PMCID: PMC6272456 DOI: 10.3390/molecules200610748] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 11/24/2022] Open
Abstract
Cyclic seleninate esters function as mimetics of the antioxidant selenoenzyme glutathione peroxidase. They catalyze the reduction of harmful peroxides with thiols, which are converted to disulfides in the process. The possibility that the seleninate esters could also catalyze the further oxidation of disulfides to thiolsulfinates and other overoxidation products under these conditions was investigated. This has ramifications in potential medicinal applications of seleninate esters because of the possibility of catalyzing the unwanted oxidation of disulfide-containing spectator peptides and proteins. A variety of aryl and alkyl disulfides underwent facile oxidation with hydrogen peroxide in the presence of catalytic benzo-1,2-oxaselenolane Se-oxide affording the corresponding thiolsulfinates as the principal products. Unsymmetrical disulfides typically afforded mixtures of regioisomers. Lipoic acid and N,N′-dibenzoylcystine dimethyl ester were oxidized readily under similar conditions. Although isolated yields of the product thiolsulfinates were generally modest, these experiments demonstrate that the method nevertheless has preparative value because of its mild conditions. The results also confirm the possibility that cyclic seleninate esters could catalyze the further undesired oxidation of disulfides in vivo.
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Affiliation(s)
- Nicole M R McNeil
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada.
| | - Ciara McDonnell
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada.
| | - Miranda Hambrook
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada.
| | - Thomas G Back
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada.
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18
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Developments in Synthetic Application of Selenium(IV) Oxide and Organoselenium Compounds as Oxygen Donors and Oxygen-Transfer Agents. Molecules 2015; 20:10205-43. [PMID: 26046320 PMCID: PMC6272618 DOI: 10.3390/molecules200610205] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 05/23/2015] [Accepted: 06/01/2015] [Indexed: 11/16/2022] Open
Abstract
A variety of selenium compounds were proven to be useful reagents and catalysts for organic synthesis over the past several decades. The most interesting aspect, which emerged in recent years, concerns application of hydroperoxide/selenium(IV) oxide and hydroperoxide/organoselenium catalyst systems, as "green reagents" for the oxidation of different organic functional groups. The topic of oxidations catalyzed by organoselenium derivatives has rapidly expanded in the last fifteen years This paper is devoted to the synthetic applications of the oxidation reactions mediated by selenium compounds such as selenium(IV) oxide, areneseleninic acids, their anhydrides, selenides, diselenides, benzisoselenazol-3(2H)-ones and other less often used other organoselenium compounds. All these compounds have been successfully applied for various oxidations useful in practical organic syntheses such as epoxidation, 1,2-dihydroxylation, and α-oxyfunctionalization of alkenes, as well as for ring contraction of cycloalkanones, conversion of halomethyl, hydroxymethyl or active methylene groups into formyl groups, oxidation of carbonyl compounds into carboxylic acids and/or lactones, sulfides into sulfoxides, and secondary amines into nitrones and regeneration of parent carbonyl compounds from their azomethine derivatives. Other reactions such as dehydrogenation and aromatization, active carbon-carbon bond cleavage, oxidative amidation, bromolactonization and oxidation of bromide for subsequent reactions with alkenes are also successfully mediated by selenium (IV) oxide or organoselenium compounds. The oxidation mechanisms of ionic or free radical character depending on the substrate and oxidant are discussed. Coverage of the literature up to early 2015 is provided. Links have been made to reviews that summarize earlier literature and to the methods of preparation of organoselenium reagents and catalysts.
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19
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Li HL, An XL, Ge LS, Luo X, Deng WP. Catalytic α-hydroxylation of ketones under CuBr2 or HBr/DMSO systems. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.116] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Panguluri NR, Panduranga V, Prabhu G, Vishwanatha TM, Sureshbabu VV. Synthesis of chiral Nβ-protected amino diselenides from the corresponding amino alkyl iodides using NaBH2Se3 as a selenating reagent and their conversion to seleninic acids. RSC Adv 2015. [DOI: 10.1039/c5ra06147d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of Nβ-protected amino diselenides and l-selenocystine methyl esters from amino alkyl iodides using NaBH2Se3 as an efficient selenating reagent is described. Further the synthesis of Nβ-protected amino seleninic acids using 35% aqueous H2O2 has been demonstrated.
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Affiliation(s)
- Nageswara Rao Panguluri
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore 560 001
- India
| | - Veladi Panduranga
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore 560 001
- India
| | - Girish Prabhu
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore 560 001
- India
| | - T. M. Vishwanatha
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore 560 001
- India
| | - Vommina V. Sureshbabu
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore 560 001
- India
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21
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Alberto EE, Muller LM, Detty MR. Rate Accelerations of Bromination Reactions with NaBr and H2O2 via the Addition of Catalytic Quantities of Diaryl Ditellurides. Organometallics 2014. [DOI: 10.1021/om500883f] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Eduardo E. Alberto
- Department
of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Lisa M. Muller
- Department
of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Michael R. Detty
- Department
of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
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22
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Press DJ, McNeil NMR, Hambrook M, Back TG. Effects of Methoxy Substituents on the Glutathione Peroxidase-like Activity of Cyclic Seleninate Esters. J Org Chem 2014; 79:9394-401. [DOI: 10.1021/jo501689h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- David J. Press
- Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - Nicole M. R. McNeil
- Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - Miranda Hambrook
- Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
| | - Thomas G. Back
- Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
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23
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Secci F, Arca M, Frongia A, Piras PP. New aminotetrazole derivatives as hydrogen bonding catalysts. A green and selective oxidation of organosulphides with H2O2in H2O. NEW J CHEM 2014. [DOI: 10.1039/c4nj00530a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Crystal Structure Studies on Some of Benzamide Ring Substituted Isoselenazolones and Symmetric Diaryl Monoselenides Derived from Benzamides. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2014. [DOI: 10.1007/s40010-014-0129-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Secci F, Arca M, Frongia A, Piras PP. Tetrazole amides as hydrogen-bonding donor catalysts in the chemoselective oxidation of sulphides and disulphides. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00086b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Secci F, Frongia A, Piras PP. Ammonium salt catalyzed oxidation of organosulfides to organosulfoxydes. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.11.045] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Santoro S, Azeredo JB, Nascimento V, Sancineto L, Braga AL, Santi C. “The green side of the moon: ecofriendly aspects of organoselenium chemistry”. RSC Adv 2014. [DOI: 10.1039/c4ra04493b] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Key aspects for the development of a greener synthesis and the use of the organoselenium compounds.
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Affiliation(s)
- Stefano Santoro
- Department of Organic Chemistry
- Arrhenius Laboratory
- Stockholm University
- Stockholm, Sweden
| | - Juliano B. Azeredo
- Laboratório de Síntese de Substâncias de Selênio Bioativas
- Centro de Ciências Físicas e Matemáticas
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis, Brazil
| | - Vanessa Nascimento
- Laboratório de Síntese de Substâncias de Selênio Bioativas
- Centro de Ciências Físicas e Matemáticas
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis, Brazil
| | - Luca Sancineto
- Dipartimento di Scienze Farmaceutiche
- Università di Perugia
- Perugia, Italy
| | - Antonio L. Braga
- Laboratório de Síntese de Substâncias de Selênio Bioativas
- Centro de Ciências Físicas e Matemáticas
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis, Brazil
| | - Claudio Santi
- Dipartimento di Scienze Farmaceutiche
- Università di Perugia
- Perugia, Italy
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da Silva JMR, Bitencourt TB, Moreira MA, Nascimento MDG. Enzymatic epoxidation of β-caryophyllene using free or immobilized lipases or mycelia from the Amazon region. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2013.05.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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McNeil NMR, Matz MC, Back TG. Fluxional Cyclic Seleninate Ester: NMR and Computational Studies, Glutathione Peroxidase-like Behavior, and Unexpected Rearrangement. J Org Chem 2013; 78:10369-82. [DOI: 10.1021/jo401757m] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Nicole M. R. McNeil
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
| | - Marie C. Matz
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
| | - Thomas G. Back
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
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Bayse CA, Ortwine KN. Modeling the Glutathione Peroxidase-Like Activity of a Cyclic Seleninate by DFT and Solvent-Assisted Proton Exchange. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300279] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Xu W, Kloeckner U, Nachtsheim BJ. Direct Synthesis of 2,5-Disubstituted Oxazoles through an Iodine-Catalyzed Decarboxylative Domino Reaction. J Org Chem 2013; 78:6065-74. [DOI: 10.1021/jo400753n] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Wei Xu
- Institute of Organic Chemistry, Eberhard Karls University Tuebingen, Auf der Morgenstelle 18,
D-72076 Tuebingen, Germany
| | - Ulrich Kloeckner
- Institute of Organic Chemistry, Eberhard Karls University Tuebingen, Auf der Morgenstelle 18,
D-72076 Tuebingen, Germany
| | - Boris J. Nachtsheim
- Institute of Organic Chemistry, Eberhard Karls University Tuebingen, Auf der Morgenstelle 18,
D-72076 Tuebingen, Germany
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Imidazolium-containing diselenides for catalytic oxidations with hydrogen peroxide and sodium bromide in aqueous solutions. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.08.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Balkrishna SJ, Prasad CD, Panini P, Detty MR, Chopra D, Kumar S. Isoselenazolones as catalysts for the activation of bromine: bromolactonization of alkenoic acids and oxidation of alcohols. J Org Chem 2012; 77:9541-52. [PMID: 23046286 DOI: 10.1021/jo301486c] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Isoselenazolones were synthesized by a copper-catalyzed Se-N bond forming reaction between 2-halobenzamides and selenium powder. The catalytic activity of the various isoselenazolones was studied in the bromolactonization of pent-4-enoic acid. Isoselenazolone 9 was studied as a catalyst in several reactions: the bromolactonization of a series of alkenoic acids with bromine or N-bromosuccinimide (NBS) in the presence of potassium carbonate as base, the bromoesterification of a series of alkenes using NBS and a variety of carboxylic acids, and the oxidation of secondary alcohols to ketones using bromine as an oxidizing reagent. Mechanistic details of the isoselenazolone-catalyzed bromination reaction were revealed by (77)Se NMR spectroscopic and ES-MS studies. The oxidative addition of bromine to the isoselenazolone gives the isoselenazolone(IV) dibromide, which could be responsible for the activation of bromine under the reaction conditions. Steric effects from an N-phenylethyl group on the amide of the isoselenazolone and electron-withdrawing fluoro substituents on the benzo fused-ring of the isoselenazolone appear to enhance the stability of the isoselenazolone as a catalyst for the bromination reaction.
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Affiliation(s)
- Shah Jaimin Balkrishna
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER), Bhopal, Madhya Pradesh 462 023, India
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Press DJ, McNeil NMR, Rauk A, Back TG. NMR and Computational Studies of the Configurational Properties of Spirodioxyselenuranes. Are Dynamic Exchange Processes or Temperature-Dependent Chemical Shifts Involved? J Org Chem 2012; 77:9268-76. [DOI: 10.1021/jo301846a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David J. Press
- Department
of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
| | - Nicole M. R. McNeil
- Department
of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
| | - Arvi Rauk
- Department
of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
| | - Thomas G. Back
- Department
of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
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