1
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Schmidt-Räntsch T, Verplancke H, Kehl A, Sun J, Bennati M, Holthausen MC, Schneider S. C=C Dissociative Imination of Styrenes by a Photogenerated Metallonitrene. JACS AU 2024; 4:3421-3426. [PMID: 39328761 PMCID: PMC11423323 DOI: 10.1021/jacsau.4c00571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2024] [Revised: 08/21/2024] [Accepted: 08/21/2024] [Indexed: 09/28/2024]
Abstract
Photolysis of a platinum(II) azide complex in the presence of styrenes enables C=C double bond cleavage upon dissociative olefin imination to aldimido (PtII-N=CHPh) and formimido (PtII-N=CH2) complexes as the main products. Spectroscopic and quantum chemical examinations support a mechanism that commences with the decay of the metallonitrene photoproduct (PtII-N) via bimolecular coupling and nitrogen loss as N2. The resulting platinum(I) complex initiates a radical chain mechanism via a dinuclear radical-bridged species (PtII-CH2CHPhN•-PtII) as a direct precursor to C-C scission. The preference for the PtI mediated route over styrene aziridination is attributed to the distinct nucleophilicity of the triplet metallonitrene.
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Affiliation(s)
- Till Schmidt-Räntsch
- Institut für Anorganische Chemie and International Center for Advanced Studies of Energy Conversion, Georg-August-Universität Göttingen, Tammannstraße 4, 37077 Göttingen, Germany
| | - Hendrik Verplancke
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt am Main, Max-von-Laue-Str. 7, 60438 Frankfurt am Main, Germany
| | - Annemarie Kehl
- Research Group EPR spectroscopy, Max Planck Institute for Multidisciplinary Sciences, Am Fassberg 11, 37077 Göttingen, Germany
- Institut für Physikalische Chemie, Tammannstraße 6, 37077 Göttingen, Germany
| | - Jian Sun
- Institut für Anorganische Chemie and International Center for Advanced Studies of Energy Conversion, Georg-August-Universität Göttingen, Tammannstraße 4, 37077 Göttingen, Germany
| | - Marina Bennati
- Research Group EPR spectroscopy, Max Planck Institute for Multidisciplinary Sciences, Am Fassberg 11, 37077 Göttingen, Germany
- Institut für Physikalische Chemie, Tammannstraße 6, 37077 Göttingen, Germany
| | - Max C Holthausen
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt am Main, Max-von-Laue-Str. 7, 60438 Frankfurt am Main, Germany
| | - Sven Schneider
- Institut für Anorganische Chemie and International Center for Advanced Studies of Energy Conversion, Georg-August-Universität Göttingen, Tammannstraße 4, 37077 Göttingen, Germany
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2
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Yu X, Zhao Z, Tan S, Zhu L, Fu W, An Y, Wang L. Synergistic catalysis: cobalt-catalyzed cascade reaction for the oxidative cleavage of olefins to access esters. Chem Commun (Camb) 2024; 60:8063-8066. [PMID: 38989638 DOI: 10.1039/d1cc01596f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
An efficient strategy for the oxidative cleavage of CC bonds in olefins to form esters with one or multiple carbon atoms less over heterogeneous cobalt/nitrogen-doped carbon catalyst with dioxygen as the oxidant was described. The protocol features a wide substrate range including the challenging inactive aliphatic and long-chain alkyl aryl olefins. The reactivity of the catalyst did not decrease after reused for seven times. Characterization and control experiments reveal that synergistic effects between the metallic Co nanoparticles and Co-Nx sites provide access to the excellent catalytic activity.
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Affiliation(s)
- Xiangzhu Yu
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road 850#, Dalian 116029, P. R. China.
| | - Zhengjia Zhao
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road 850#, Dalian 116029, P. R. China.
| | - Shangzhi Tan
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road 850#, Dalian 116029, P. R. China.
| | - Lina Zhu
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road 850#, Dalian 116029, P. R. China.
| | - Weiru Fu
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road 850#, Dalian 116029, P. R. China.
| | - Yue An
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road 850#, Dalian 116029, P. R. China.
| | - Lianyue Wang
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road 850#, Dalian 116029, P. R. China.
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3
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Liao K, Fang Y, Sheng L, Chen J, Huang Y. Water mediated redox-neutral cleavage of arylalkenes via photoredox catalysis. Nat Commun 2024; 15:6227. [PMID: 39043702 PMCID: PMC11266562 DOI: 10.1038/s41467-024-50624-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 07/16/2024] [Indexed: 07/25/2024] Open
Abstract
Cleavage of carbon-carbon bonds remains a challenging task in organic synthesis. Traditional methods for splitting Csp2=Csp2 bonds into two halves typically involve non-redox (metathesis) or oxidative (ozonolysis) mechanisms, limiting their synthetic potential. Disproportionative deconstruction of alkenes, which yields one reduced and one oxidized fragment, remains an unexplored area. In this study, we introduce a redox-neutral approach for deleting a Csp2 carbon unit from substituted arylalkenes, resulting in the formation of an arene (reduction) and a carbonyl product (oxidation). This transformation is believed to proceed through a mechanistic sequence involving visible-light-promoted anti-Markovnikov hydration, followed by photoredox cleavage of Csp3-Csp3 bond in the alcohol intermediate. A crucial consideration in this design is addressing the compatibility between the highly reactive oxy radical species in the latter step and the required hydrogen-atom-transfer (HAT) reagent for both steps. We found that ethyl thioglycolate serves as the optimal hydrogen-atom shuttle, offering remarkable chemoselectivity among multiple potential HAT events in this transformation. By using D2O, we successfully prepared dideuteromethylated (-CD2H) arenes with good heavy atom enrichment. This work presents a redox-neutral alternative for alkene deconstruction, with considerable potential in late-stage modification of complex molecules.
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Affiliation(s)
- Ke Liao
- Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen, 518118, China
| | - Yuqi Fang
- Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen, 518118, China
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Lei Sheng
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Jiean Chen
- Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen, 518118, China.
| | - Yong Huang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China.
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4
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Hussain WA, Parasram M. Recent Advances in Photoinduced Oxidative Cleavage of Alkenes. SYNTHESIS-STUTTGART 2024; 56:1775-1786. [PMID: 39144683 PMCID: PMC11323056 DOI: 10.1055/s-0042-1751534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
Abstract
Oxidative cleavage of alkenes leading to valuable carbonyl derivatives is a fundamental transformation in synthetic chemistry. In particular, ozonolysis is the mainstream method for the oxidative cleavage of alkenes that has been widely implemented in the synthesis of natural products and pharmaceutically relevant compounds. However, due to the toxicity and explosive nature of ozone, alternative approaches employing transition metals and enzymes in the presence of oxygen and/or strong oxidants have been developed. These protocols are often conducted under harsh reaction conditions that limit the substrate scope. Photochemical approaches can provide milder and more practical alternatives for this synthetically useful transformation. In this review, we outline recent visible-light-promoted oxidative cleavage reactions that involve photocatalytic activation of oxygen via electron transfer and energy transfer. Also, an emerging field featuring visible-light-promoted oxidative cleavage under anaerobic conditions is discussed. The methods highlighted in this review represent a transformative step toward more sustainable and efficient strategies for the oxidative cleavage of alkenes.
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Affiliation(s)
- Waseem A Hussain
- Department of Chemistry, New York University, 29 Washington Pl, New York, New York 10003, USA
| | - Marvin Parasram
- Department of Chemistry, New York University, 29 Washington Pl, New York, New York 10003, USA
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5
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Chand S, Sharma AK, Pandey AK, Singh KN. Synthesis of unsymmetrical ketones via dual catalysed cross-coupling of α,β-unsaturated carboxylic acids with aryldiazonium salts. Chem Commun (Camb) 2023. [PMID: 38013486 DOI: 10.1039/d3cc04898e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
A visible light-enabled synthesis of unsymmetrical ketones has been accomplished by the cross-coupling of α,β-unsaturated carboxylic acids and aryldiazonium salts embracing a synergistic eosin Y and Co(OAc)2·4H2O catalysis. The reaction involves decarboxylative aerobic CC bond cleavage, and is endowed with the creation of new C-C and C-O bonds with good substrate scope.
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Affiliation(s)
- Shiv Chand
- Department of Chemistry Institute of Science Banaras Hindu University, Varanasi 221005, India.
| | - Anup Kumar Sharma
- Department of Chemistry Institute of Science Banaras Hindu University, Varanasi 221005, India.
| | - Anand Kumar Pandey
- Department of Chemistry Institute of Science Banaras Hindu University, Varanasi 221005, India.
| | - Krishna Nand Singh
- Department of Chemistry Institute of Science Banaras Hindu University, Varanasi 221005, India.
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6
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Liang YF, Bilal M, Tang LY, Wang TZ, Guan YQ, Cheng Z, Zhu M, Wei J, Jiao N. Carbon-Carbon Bond Cleavage for Late-Stage Functionalization. Chem Rev 2023; 123:12313-12370. [PMID: 37942891 DOI: 10.1021/acs.chemrev.3c00219] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Late-stage functionalization (LSF) introduces functional group or structural modification at the final stage of the synthesis of natural products, drugs, and complex compounds. It is anticipated that late-stage functionalization would improve drug discovery's effectiveness and efficiency and hasten the creation of various chemical libraries. Consequently, late-stage functionalization of natural products is a productive technique to produce natural product derivatives, which significantly impacts chemical biology and drug development. Carbon-carbon bonds make up the fundamental framework of organic molecules. Compared with the carbon-carbon bond construction, the carbon-carbon bond activation can directly enable molecular editing (deletion, insertion, or modification of atoms or groups of atoms) and provide a more efficient and accurate synthetic strategy. However, the efficient and selective activation of unstrained carbon-carbon bonds is still one of the most challenging projects in organic synthesis. This review encompasses the strategies employed in recent years for carbon-carbon bond cleavage by explicitly focusing on their applicability in late-stage functionalization. This review expands the current discourse on carbon-carbon bond cleavage in late-stage functionalization reactions by providing a comprehensive overview of the selective cleavage of various types of carbon-carbon bonds. This includes C-C(sp), C-C(sp2), and C-C(sp3) single bonds; carbon-carbon double bonds; and carbon-carbon triple bonds, with a focus on catalysis by transition metals or organocatalysts. Additionally, specific topics, such as ring-opening processes involving carbon-carbon bond cleavage in three-, four-, five-, and six-membered rings, are discussed, and exemplar applications of these techniques are showcased in the context of complex bioactive molecules or drug discovery. This review aims to shed light on recent advancements in the field and propose potential avenues for future research in the realm of late-stage carbon-carbon bond functionalization.
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Affiliation(s)
- Yu-Feng Liang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Muhammad Bilal
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Le-Yu Tang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Tian-Zhang Wang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Yu-Qiu Guan
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Zengrui Cheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Minghui Zhu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Jialiang Wei
- Changping Laboratory, Yard 28, Science Park Road, Changping District, Beijing 102206, China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
- Changping Laboratory, Yard 28, Science Park Road, Changping District, Beijing 102206, China
- State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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7
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Das A, Mohit, Thomas KRJ. Donor-Acceptor Covalent Organic Frameworks as a Heterogeneous Photoredox Catalyst for Scissoring Alkenes to Carbonyl Constituents. J Org Chem 2023; 88:14065-14077. [PMID: 37695568 DOI: 10.1021/acs.joc.3c01594] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
The conversion of alkenes to carbonyl constituents via the cleavage of the C═C bond is unique due to its biological and pharmacological significance. Though a number of oxidative C═C cleavage protocols have been demonstrated for terminal and electron-rich alkene systems, none of them were optimized for electron-deficient and conjugated alkenes. In this work, a covalent organic framework containing triphenylamine and triazine units was revealed to cleave the C═C bond of alkenes under very mild conditions involving visible light irradiation due to its photoredox property. The alkenes can be conveniently broken across the double bond to their constituent carbonyl derivatives on light irradiation in the presence of air and the covalent organic framework photocatalyst. This protocol is applicable for a wide range of alkenes in an aqueous acetonitrile medium with high functional group tolerance and regioselectivity. Though the electron-deficient alkenes required tetramethylethylene diamine as a sacrificial donor, the electron-rich alkenes do not demand any additives.
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Affiliation(s)
- Anupam Das
- Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Mohit
- Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - K R Justin Thomas
- Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
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8
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Li X, Hua H, Liu Y, Yu L. Iron-Promoted Catalytic Activity of Selenium Endowing the Aerobic Oxidative Cracking Reaction of Alkenes. Org Lett 2023; 25:6720-6724. [PMID: 37675997 DOI: 10.1021/acs.orglett.3c02569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Oxidative cracking of alkenes is a significant process in industry. In this work, it was found that catalyzed by Se/Fe via hybrid mechanisms, the carbon-carbon double bond in alkenes can break to produce carbonyls under mild conditions. Since O2 can be used as a partial oxidant, the employed H2O2 amount can be reduced (90 mol % vs 250 mol %) to avoid the peroxide residues, making the process even safer for operation.
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Affiliation(s)
- Xiaoxue Li
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China
| | - Hangzhou Hua
- Fujian Deer Technology Corp, Longyan, Fujian 364204, China
| | - Yonghong Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China
| | - Lei Yu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China
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9
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Kou LG, Guo SH, Gao YR, Yue T, Wang YQ. Oxidative Cleavage and Fluoromethylthiolation of C═C Bonds: A General Route toward Mono-, Di-, and Trifluoromethylthioesters from Alkenes. Org Lett 2023; 25:5984-5988. [PMID: 37548642 DOI: 10.1021/acs.orglett.3c02101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
A novel oxidative cleavage and fluoromethylthiolation reaction of C═C bonds has been developed that represents the first and general method for the preparation of mono-, di-, and trifluoromethylthioesters from alkenes. The protocol features excellent product selectivity and substrate suitability. Various observations suggested that the protocol proceeded via a two-step radical process and that aldehyde was the key intermediate. What's more meaningful is that this route provides a new direction for converting alkenes into higher-value-added carbonyl-containing chemicals.
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Affiliation(s)
- Li-Gang Kou
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Shi-Huan Guo
- College of Food Science and Technology, Laboratory of Nutritional and Healthy Food-Individuation Manufacturing Engineering, Research Center of Food Safety Risk Assessment and Control, Northwest University, Xi'an 710127, China
| | - Ya-Ru Gao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Tianli Yue
- College of Food Science and Technology, Laboratory of Nutritional and Healthy Food-Individuation Manufacturing Engineering, Research Center of Food Safety Risk Assessment and Control, Northwest University, Xi'an 710127, China
| | - Yong-Qiang Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
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10
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Chen B, Zhang L, Luo H, Huang L, He P, Xue G, Liang H, Dai W. Oxidative Cleavage and Ammoxidation of Unsaturated Hydrocarbons via Heterogeneous Auto-Tandem Catalysis. JACS AU 2023; 3:476-487. [PMID: 36873692 PMCID: PMC9975833 DOI: 10.1021/jacsau.2c00608] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 05/31/2023]
Abstract
The oxidative cleavage and functionalization of unsaturated C-C bonds are important processes for synthesis of carbonyl compounds from hydrocarbon feedstocks, yet there has been no report of direct amidation of unsaturated hydrocarbons via an oxidative cleavage of unsaturated C-C bonds with molecular oxygen as an environmentally benign oxidant. Herein, for the first time, we describe a manganese oxide-catalyzed auto-tandem catalysis strategy that enables direct synthesis of amides from unsaturated hydrocarbons by coupling oxidative cleavage with amidation. With oxygen as an oxidant and ammonia as a nitrogen source, a wide range of structurally diverse mono- and multisubstituted activated and unactivated alkenes or alkynes can smoothly undergo unsaturated C-C bond cleavage to deliver one- or multiple-carbon shorter amides. Moreover, a slight modification of the reaction conditions also allows for the direct synthesis of sterically hindered nitriles from alkenes or alkynes. This protocol features excellent functional group tolerance, a broad substrate scope, flexible late-stage functionalization, facile scalability, and a cost-effective and recyclable catalyst. Detailed characterizations reveal that the high activity and selectivity of the manganese oxides are attributed to the large specific surface area, abundant oxygen vacancies, better reducibility, and moderate acid sites. Mechanistic studies and density functional theory calculations indicate that the reaction proceeds through divergent pathways depending on the structure of substrates.
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Affiliation(s)
- Bo Chen
- Dalian
Institute of Chemical Physics, Chinese Academy
of Sciences, Dalian 116023, China
| | - Lei Zhang
- Dalian
Institute of Chemical Physics, Chinese Academy
of Sciences, Dalian 116023, China
| | - Huihui Luo
- Dalian
Institute of Chemical Physics, Chinese Academy
of Sciences, Dalian 116023, China
| | - Liang Huang
- The
State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Peipei He
- Dalian
Institute of Chemical Physics, Chinese Academy
of Sciences, Dalian 116023, China
| | - Gaijun Xue
- Dalian
Institute of Chemical Physics, Chinese Academy
of Sciences, Dalian 116023, China
| | - Hongliang Liang
- Dalian
Institute of Chemical Physics, Chinese Academy
of Sciences, Dalian 116023, China
| | - Wen Dai
- Dalian
Institute of Chemical Physics, Chinese Academy
of Sciences, Dalian 116023, China
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11
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Majedi M, Safaei E, Gyergyek S. New iron(iii) complex of bis-bidentate-anchored diacyl resorcinol on a Fe 3O 4 nanomagnet: C-H bond oxygenation, oxidative cleavage of alkenes and benzoxazole synthesis. RSC Adv 2023; 13:4040-4055. [PMID: 36756566 PMCID: PMC9890640 DOI: 10.1039/d2ra06818d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/17/2023] [Indexed: 01/31/2023] Open
Abstract
We have synthesized a novel, bis-bidentate, covalently anchored, 4,6-diacetyl resorcinol (DAR) ligand on silica-coated magnetic Fe3O4 nanoparticles and the corresponding bi-metallic iron(iii) complex (Fe3O4@SiO2-APTESFe2LDAR). Both the chemical nature and the structure of the homogeneously heterogenized catalyst were investigated using physico-chemical techniques. The results obtained by XPS, XRD, FT-IR, TGA, VSM, SEM, TEM, EDX, ICP and AAS revealed a magnetic core, a silica layer and the grafting of a binuclear iron complex on the Fe3O4@SiO2-APTES, as well as its thermodynamic stability. Despite many reports of metal complexes on different supports, there are no reports of anchored, bi-metallic complexes. To the best of our knowledge, this is the first report of a bi-active site catalyst covalently attached to a support. This study focuses on the catalytic activity of an as-synthesized, bi-active site catalyst for C-H bond oxygenation, the oxidative cleavage of alkenes, and the multicomponent, one-pot synthesis of benzoxazole derivatives with excellent yields from readily available starting materials. Our results indicated high conversion rates and selectivity under mild reaction conditions and simple separation using a magnetic field. The leaching and recyclability tests of the catalyst were investigated for the above processes, which indicated that all the reactions proceed via a heterogeneous pathway and that the catalyst is recyclable without any tangible loss in catalytic activity for at least 8, 5 and 5 cycles for C-H bond oxygenation, C[double bond, length as m-dash]C bond cleavage and benzoxazole synthesis, respectively.
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Affiliation(s)
- Mona Majedi
- Department of Chemistry, College of Sciences, Shiraz University Shiraz 71454 Iran
| | - Elham Safaei
- Department of Chemistry, College of Sciences, Shiraz University Shiraz 71454 Iran
| | - Sašo Gyergyek
- Department for Synthesis of Materials, Jožef Stefan InstituteJamova cesta 391000 LjubljanaSlovenia
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12
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Feng Q, Wang Y, Zheng B, Huang S. Electrochemical Oxidative Cleavage of Alkynes to Carboxylic Acids. Org Lett 2023; 25:293-297. [PMID: 36587377 DOI: 10.1021/acs.orglett.2c04204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A sustainable method for converting terminal alkynes into their corresponding carboxylic acids is reported using synthetic electrolysis in an undivided cell at room temperature. This protocol, avoiding transition metal catalysis and stoichiometric chemical oxidants, tolerates a variety of aryl, heteroaryl, and alkyl akynes. Preliminary mechanistic studies demonstrate that sodium nitrite serves a triple role as the electrolyte, nitryl radical precursor, and a nitrosating reagent.
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Affiliation(s)
- Qingyuan Feng
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Yamin Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Binnan Zheng
- Ningxia Best Pharmaceutical Chemical Co., Ltd., Yinchuan 750411, China
| | - Shenlin Huang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
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13
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Highly selective photocatalytic oxidation of alcohols under the application of novel metal organic frameworks (MOFs) based catalytic system. J Colloid Interface Sci 2023; 629:136-143. [DOI: 10.1016/j.jcis.2022.08.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 11/23/2022]
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14
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Shih YL, Wu YK, Hyodo M, Ryu I. Photocatalytic Oxidative Cleavage of Alkenes by Molecular Oxygen: Reaction Scope, Mechanistic Insights, and Flow Application. J Org Chem 2022; 88:6548-6552. [DOI: 10.1021/acs.joc.2c02429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yi-Lun Shih
- Department of Applied Chemistry, National Yang Ming Chiao Tung University (NYCU), Hsinchu 30010, Taiwan
| | - Yen-Ku Wu
- Department of Applied Chemistry, National Yang Ming Chiao Tung University (NYCU), Hsinchu 30010, Taiwan
| | - Mamoru Hyodo
- Institution for Research Promotion, Osaka Metropolitan University (OMU), Sakai, Osaka 599-8531, Japan
| | - Ilhyong Ryu
- Department of Applied Chemistry, National Yang Ming Chiao Tung University (NYCU), Hsinchu 30010, Taiwan
- Institution for Research Promotion, Osaka Metropolitan University (OMU), Sakai, Osaka 599-8531, Japan
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15
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Jia R, Wang J, Jiang Y, Ni B, Niu T. Photocatalyzed oxidative cleavage of CC bond to carbonyl compounds by a recyclable homogeneous carbon nitride semiconductor/aqueous system. Org Biomol Chem 2022; 20:8305-8312. [PMID: 36239157 DOI: 10.1039/d2ob01640k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The development of methods based on direct oxidative cleavage of alkynes to carbonyls is an extremely challenging task. In this work, we describe a UV light-driven, potassium/sodium poly(heptazine imide) (K,Na-PHI)-catalyzed protocol for the selective oxidative cleavage of alkynes to acids under an O2 atmosphere using water as a solvent. Various aromatic alkynes can be selectively cleaved to afford aromatic acids in good to high yield under clean, mild conditions. Mechanistic investigation indicates that the photogenerated hydroxyl radicals in situ act as green oxidation active species. Moreover, this protocol could be further developed as a sequential oxidative cleavage/esterification process for the preparation of aryl esters. Notably, the KNaPHI-II/water catalyst system could be used several times without significant loss of activity.
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Affiliation(s)
- Rui Jia
- International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.
| | - Jingjing Wang
- International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.
| | - Yuqin Jiang
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Bangqing Ni
- International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.
| | - Tengfei Niu
- International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.
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16
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Zhang K, Li C, Jia Y, Zhao W. Asymmetric Oxidative Lactonization of Enynyl Boronates. Angew Chem Int Ed Engl 2022; 61:e202209004. [DOI: 10.1002/anie.202209004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Kezhuo Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University 410082 Changsha Hunan P. R. China
| | - Chenchen Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University 410082 Changsha Hunan P. R. China
| | - Yining Jia
- State Key Laboratory of Chemo/Biosensing and Chemometrics Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University 410082 Changsha Hunan P. R. China
| | - Wanxiang Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University 410082 Changsha Hunan P. R. China
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17
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Photoexcited Nitroarenes for the Oxidative Cleavage of Alkenes. Nature 2022; 610:81-86. [PMID: 35998666 DOI: 10.1038/s41586-022-05211-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 08/09/2022] [Indexed: 11/09/2022]
Abstract
The oxidative cleavage of alkenes is an integral process that converts feedstock materials into high-value synthetic intermediates1,2,3. The most viable method to achieve this in one chemical step is with ozone4,5,6,7, which however poses technical and safety challenges owing to the explosive nature of ozonolysis products8,9. Herein, we disclose an alternative approach to achieve oxidative cleavage of alkenes using nitroarenes and purple light irradiation. We demonstrate that photoexcited nitroarenes are effective ozone surrogates that undergo facile radical [3+2] cycloaddition with alkenes. The resulting "N-doped" ozonides are safe to handle and lead to the corresponding carbonyl products under mild hydrolytic conditions. These features have enabled the controlled cleavage of all types of alkenes in the presence of a broad array of commonly used organic functionalities. Furthermore, by harnessing electronic, steric, and mediated polar effects, the structural and functional diversity of nitroarenes has provided a modular platform to obtain site-selectivity in substrates containing more than one alkene.
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18
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Zhang K, Li C, Jia Y, Zhao W. Asymmetric Oxidative Lactonization of Enynyl Boronates. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | | | | | - Wanxiang Zhao
- Hunan University chemistry Yuelushan, Changsha 410082 changsha CHINA
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19
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Xue G, Xie F, Liang H, Chen G, Dai W. Copper-Catalyzed Oxidative C-C Bond Cleavage of Alkyl-(Hetero)arenes Enabling Direct Access to Nitriles. Org Lett 2022; 24:5590-5595. [PMID: 35849775 DOI: 10.1021/acs.orglett.2c02238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The cleavage and functionalization of C-C bonds has emerged as a powerful tool for discovery of new transformations. Herein, we report a protocol that enables direct synthesis of nitriles via copper-catalyzed oxidative cleavage and cyanation of C-C bonds in a wide variety of multicarbon alkyl-substituted (hetero)arenes. Detailed mechanistic studies reveal that a tandem oxidative process is involved in this transformation.
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Affiliation(s)
- Gaijun Xue
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China.,Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Fukai Xie
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Hongliang Liang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Guoliang Chen
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Wen Dai
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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20
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Song J, Liu J, Loh KP, Chen Z. Ultrahigh Loading Copper Single Atom Catalyst for Palladium-free Wacker Oxidation. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-022-2130-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Wu J, Peng Z, Shen T, Liu ZQ. Electrosynthesis of ortho‐Amino Aryl Ketones by Aerobic Electrooxidative Cleavage of the C(2)=C(3)/C(2)‐N Bonds of N‐Boc Indoles. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jintao Wu
- Nanjing University of Chinese Medicine CHINA
| | - Zehui Peng
- Nanjing University of Chinese Medicine CHINA
| | - Tong Shen
- Nanjing University of Chinese Medicine CHINA
| | - Zhong-Quan Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University CHINA
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22
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Zhuang W, Zhang J, Ma C, Wright JS, Zhang X, Ni SF, Huang Q. Scalable Electrochemical Aerobic Oxygenation of Indoles to Isatins without Electron Transfer Mediators by Merging with an Oxygen Reduction Reaction. Org Lett 2022; 24:4229-4233. [PMID: 35678516 DOI: 10.1021/acs.orglett.2c01545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An approach to electrochemical oxygenation of indoles leading to isatins was developed by merging with a complementary cathode oxygen reduction reaction. The features of this green protocol include the use of molecular oxygen as the sole oxidant, it being free of an electron transfer mediator, and gram-scale preparation. Mechanistic studies suggested a radical process, and the two oxygen atoms in the isatins were both most likely from molecular oxygen. A detailed mechanism of the reaction utilizing density functional theory calculations was elucidated.
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Affiliation(s)
- Weihui Zhuang
- Fujian Key Laboratory of Polymer Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Jiaqi Zhang
- Fujian Key Laboratory of Polymer Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Cheng Ma
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong 515063, P. R. China
| | - James S Wright
- Department of Chemistry, University of Surrey, Guildford GU2 7XH, Surrey, U.K
| | - Xiaofeng Zhang
- Fujian Key Laboratory of Polymer Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Shao-Fei Ni
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong 515063, P. R. China
| | - Qiufeng Huang
- Fujian Key Laboratory of Polymer Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
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23
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Chen YX, He JT, Wu MC, Liu ZL, Tang K, Xia PJ, Chen K, Xiang HY, Chen XQ, Yang H. Photochemical Organocatalytic Aerobic Cleavage of C═C Bonds Enabled by Charge-Transfer Complex Formation. Org Lett 2022; 24:3920-3925. [PMID: 35613702 DOI: 10.1021/acs.orglett.2c01192] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel visible-light-driven organocatalytic protocol to access aerobic oxidative cleavage of olefins, promoted by sodium benzene sulfinate, is described herein. An array of alkenes smoothly delivered the corresponding aldehydes and ketones under transition-metal-free conditions. Notably, α-halo-substituted styrenes proceeded with photoinduced oxidation to finally afford α-halo-acetophenones with halogen migration. Crucial to this oxidation was the formation of charge-transfer complexes between sodium benzene sulfinate with molecular O2 to ultimately deliver the carbonyl products.
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Affiliation(s)
- Yi-Xuan Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Jun-Tao He
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Mei-Chun Wu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China.,College of Chemistry and Chemical Engineering, Huaihua University, Huaihua 418008, Hunan, P.R. China
| | - Zhi-Lin Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Kai Tang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Peng-Ju Xia
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, P.R. China
| | - Kai Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, P.R. China
| | - Xiao-Qing Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
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24
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Zhang R, Xia Y, Yan Y, Ouyang L. Cu-catalyzed, Mn-mediated propargylation and allenylation of aldehydes with propargyl bromides. BMC Chem 2022; 16:14. [PMID: 35303949 PMCID: PMC8933908 DOI: 10.1186/s13065-022-00803-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 02/22/2022] [Indexed: 11/10/2022] Open
Abstract
A simple, practical, and high chemo-selective method for the synthesis of propargyl alcohol and allenyl alcohols via Cu-catalyzed, Mn-mediated propargylation and allenylation of aldehydes with propargyl bromides has been established. When 3-bromo-1-propyne was conducted under the standard condition, the aldehydes were transformed to the corresponding propargylation products completely, while when 1-bromo-2-pentyne was used, allenic alcohol was the only product. Variety of homopropargyl alcohols and allenyl alcohols were obtained in high yields and the reaction is compatible with broad substrate scopes. In addition, the large-scale reaction could also be proceeded smoothly indicating the potential synthetic applications of this transformation.
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Affiliation(s)
- Rongli Zhang
- Xuzhou Medical University, Tongshan Road 209, Xuzhou, 221004, China.
| | - Yanping Xia
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, 341000, China
| | - Yuchen Yan
- Xuzhou Medical University, Tongshan Road 209, Xuzhou, 221004, China
| | - Lu Ouyang
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, 341000, China.
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25
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Shen T, Liu S, Zhao J, Wang N, Yang L, Wu J, Shen X, Liu ZQ. Electrochemical Aerobic Oxidative Cleavage of (sp 3)C-C(sp 3)/H Bonds in Alkylarenes. J Org Chem 2022; 87:3286-3295. [PMID: 35188765 DOI: 10.1021/acs.joc.1c02947] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An electrochemistry-promoted oxidative cleavage of (sp3)C-C(sp3)/H bonds in alkylarenes was developed. Various aryl alkanes can be smoothly converted into ketones/aldehydes under aerobic conditions using a user-friendly undivided cell setup. The features of air as oxidant, scalability, and mild conditions make them attractive in synthetic organic chemistry.
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Affiliation(s)
- Tong Shen
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China.,Institute of Molecular Sciences, University of Bordeaux, 351 Cours de la Libération, 33405 Talence, France
| | - Shuai Liu
- Institute of Molecular Sciences, University of Bordeaux, 351 Cours de la Libération, 33405 Talence, France
| | - Jianyou Zhao
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Nengyong Wang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Le Yang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jintao Wu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Xu Shen
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Zhong-Quan Liu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
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26
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Liu Z, Sun S, Lou J. PhIO-Mediated Oxidative C═C Bond Cleavage and Reassembly toward Highly Functionalized Oxazolones. Org Lett 2022; 24:1323-1328. [PMID: 35129353 DOI: 10.1021/acs.orglett.1c04326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
An efficient PhIO-mediated oxidative C═C bond cleavage and reassembly of enaminone toward oxazolone with high regioselectivity has been reported. DFT calculations revealed that the reaction proceeded through an oxygen atom transfer, C═C bond cleavage, alkylthio migration, and reassembly cascade. This strategy is highlighted by high atom and step economy with formation of five bonds in one pot and generation of a high-valued oxazolone skeleton under mild conditions.
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Affiliation(s)
- Zhuqing Liu
- Advanced Research Institute for Multidisciplinary Science, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.,State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Shaobin Sun
- Advanced Research Institute for Multidisciplinary Science, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Jiang Lou
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.,State Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
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27
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Aerobic oxidative cleavage and esterification of C C bonds catalyzed by iron-based nanocatalyst. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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28
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Louvel D, Souibgui A, Taponard A, Rouillon J, ben Mosbah M, Moussaoui Y, Pilet G, Khrouz L, Monnereau C, Vantourout JC, Tlili A. Tailoring the Reactivity of the Langlois Reagent and Styrenes with Cyanoarenes Organophotocatalysts under Visible‐Light. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202100828] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Dan Louvel
- Institute of Chemistry and Biochemistry (ICBMS–UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE-Lyon, INSA 43 Bd du 11 Novembre 1918 69622 Villeurbanne France
| | - Amel Souibgui
- Institute of Chemistry and Biochemistry (ICBMS–UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE-Lyon, INSA 43 Bd du 11 Novembre 1918 69622 Villeurbanne France
- Organic Chemistry Laboratory (LR17ES08) Faculty of Sciences of Sfax University of Sfax Sfax 3029 Tunisia
- Faculty of Sciences of Gafsa University of Gafsa Gafsa 2112 Tunisia
| | - Alexis Taponard
- Institute of Chemistry and Biochemistry (ICBMS–UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE-Lyon, INSA 43 Bd du 11 Novembre 1918 69622 Villeurbanne France
| | - Jean Rouillon
- Univ Lyon ENS de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie F-69342 Lyon France
| | - Mongi ben Mosbah
- Organic Chemistry Laboratory (LR17ES08) Faculty of Sciences of Sfax University of Sfax Sfax 3029 Tunisia
- Laboratory for the Application of Materials to the Environment, Water and Energy (LR21ES15) Faculty of Sciences of Gafsa University of Gafsa Gafsa 2112 Tunisia
| | - Younes Moussaoui
- Organic Chemistry Laboratory (LR17ES08) Faculty of Sciences of Sfax University of Sfax Sfax 3029 Tunisia
- Faculty of Sciences of Gafsa University of Gafsa Gafsa 2112 Tunisia
| | - Guillaume Pilet
- Univ Lyon Université Lyon 1, Laboratoire des Multimatériaux et Interfaces (LMI), UMR 5615, CNRS, Bâtiment Chevreul Avenue du 11 novembre 1918 69622 Villeurbanne cedex France
| | - Lhoussain Khrouz
- Univ Lyon ENS de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie F-69342 Lyon France
| | - Cyrille Monnereau
- Univ Lyon ENS de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie F-69342 Lyon France
| | - Julien C. Vantourout
- Institute of Chemistry and Biochemistry (ICBMS–UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE-Lyon, INSA 43 Bd du 11 Novembre 1918 69622 Villeurbanne France
| | - Anis Tlili
- Institute of Chemistry and Biochemistry (ICBMS–UMR CNRS 5246) Univ Lyon Université Lyon 1, CNRS, CPE-Lyon, INSA 43 Bd du 11 Novembre 1918 69622 Villeurbanne France
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29
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Electrochemical fluorosulfonylation of alkenes to access vicinal fluorinated sulfones derivatives. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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30
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Muthusamy S, Prabu A. BF 3·OEt 2 catalyzed chemoselective CC bond cleavage of α,β-enones: an unexpected synthesis of 3-alkylated oxindoles and spiro-indolooxiranes. Org Biomol Chem 2021; 20:558-564. [PMID: 34939633 DOI: 10.1039/d1ob02002a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A BF3·OEt2 catalyzed highly chemoselective formal CC double bond cleavage reaction of α,β-enones with diazoamides for the synthesis of 3-alkylated oxindoles is developed. Boron trifluoride etherate is found to be an effective catalyst for the chemoselective Cα-Cβ cleavage of enones to obtain 3-alkylated oxindoles. The product formation indicates a selective β-carbon elimination pathway of α,β-enones using the inexpensive BF3·OEt2 as a catalyst, transition metal-free conditions, an open-air environment, good functional tolerance and broad substrate scope. The synthetic utility of this protocol is highlighted by synthesizing spiro-indolooxiranes.
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Affiliation(s)
| | - Ammasi Prabu
- School of Chemistry, Bharathidasan University, Tiruchirappalli-620 024, India.
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31
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Li J, Zhao J, Ma C, Yu Z, Zhu H, Yun L, Meng Q. Visible-Light-Driven Oxidative Cleavage of Alkenes Using Water-Soluble CdSe Quantum Dots. CHEMSUSCHEM 2021; 14:4985-4992. [PMID: 34494393 DOI: 10.1002/cssc.202101504] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/07/2021] [Indexed: 06/13/2023]
Abstract
The oxidative cleavage of C=C bonds is an important chemical reaction, which is a popular reaction in the photocatalytic field. However, high catalyst-loading and low turnover number (TON) are general shortcomings in reported visible-light-driven reactions. Herein, the direct oxidative cleavage of C=C bonds through water-soluble CdSe quantum dots (QDs) is described under visible-light irradiation at room temperature with high TON (up to 3.7×104 ). Under the same conditions, water-soluble CdSe QDs could also oxidize sulfides to sulfoxides with 51-84 % yields and TONs up to 3.4×104 . The key features of this photocatalytic protocol include high TONs, wide substrates scope, low catalyst loadings, simple and mild reaction conditions, and molecular O2 as the oxidant.
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Affiliation(s)
- Jianing Li
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, P. R. China
| | - Jingnan Zhao
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, P. R. China
| | - Cunfei Ma
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, P. R. China
| | - Zongyi Yu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, P. R. China
| | - Hongfei Zhu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, P. R. China
| | - Lei Yun
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, P. R. China
| | - Qingwei Meng
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, P. R. China
- Ningbo Institute, Dalian University of Technology, Ningbo, Zhejiang, 315016, P. R. China
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32
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Eşsiz S, Bozkaya U. A computational study of the reaction mechanism of 2,2-azobis(isobutyronitrile)-initiated oxidative cleavage of geminal alkenes. Org Biomol Chem 2021; 19:9483-9490. [PMID: 34709277 DOI: 10.1039/d1ob01607e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A computational study of 2,2-azobis(isobutyronitrile) (AIBN)-initiated aerobic oxidative cleavage of alkenes is carried out employing density functional theory (DFT) and high-level coupled-cluster methods, such as coupled-cluster singles and doubles with perturbative triples [CCSD(T)]. Our computations show that the barriers for the formation of dioxetane derivatives suggested by Xu and co-workers (J. Org. Chem., 2014, 79, 7220-7225) for the reaction mechanism of aerobic oxidative cleavage of alkenes are computed to be higher than 65 kcal mol-1. This barrier is relatively high under the reaction conditions. Our results for the Xu mechanism indicate that the reaction does not proceed via the formation of a dioxetane ring under the reaction conditions. Our results demonstrate that the reaction of aerobic oxidative cleavage of geminal alkenes in the presence of AIBN is initiated by the peroxyl radical 9, contrary to the isobutyronitrile radical 2. Our results show that the 2-(2-hydroxyl-1,1-diarylethoxy)-2-methylpropanenitrile radical (15) does not appear throughout the reaction scheme and the reaction progresses over the 2-(2-hydroxyl-2,2-diarylethoxy)-2-methylpropanenitrile radical (13) rather than the 2-(2-hydroxyl-1,1-diarylethoxy)-2-methylpropanenitrile radical (15). Our results are in agreement with the experimental results for the aerobic oxidative cleavage of the geminal disubstituted alkenes. Our results also demonstrate that the epoxide derivatives can be formed as an intermediate under the reaction conditions. This reaction is not applicable for pyridine derivatives due to the conversion of vinylpyridine derivatives to N-oxide derivatives.
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Affiliation(s)
- Selçuk Eşsiz
- Department of Chemistry, Faculty of Science, Atatürk University, Erzurum 25240, Turkey.
| | - Uğur Bozkaya
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey.
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33
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Ou J, Tan H, He S, Wang W, Hu B, Yu G, Liu K. 1,2-Dibutoxyethane-Promoted Oxidative Cleavage of Olefins into Carboxylic Acids Using O 2 Under Clean Conditions. J Org Chem 2021; 86:14974-14982. [PMID: 34634904 DOI: 10.1021/acs.joc.1c01701] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Herein, we report the first example of an effective and green approach for the oxidative cleavage of olefins to carboxylic acids using a 1,2-dibutoxyethane/O2 system under clean conditions. This novel oxidation system also has excellent functional-group tolerance and is applicable for large-scale synthesis. The target products were prepared in good to excellent yields by a one-pot sequential transformation without an external initiator, catalyst, and additive.
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Affiliation(s)
- Jinhua Ou
- Department of Material and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, China.,College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Hong Tan
- Department of Material and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Saiyu He
- Department of Material and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Wei Wang
- Department of Material and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Bonian Hu
- Department of Material and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, China
| | - Gang Yu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Kaijian Liu
- Department of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China
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34
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Huang Z, Guan R, Shanmugam M, Bennett EL, Robertson CM, Brookfield A, McInnes EJL, Xiao J. Oxidative Cleavage of Alkenes by O 2 with a Non-Heme Manganese Catalyst. J Am Chem Soc 2021; 143:10005-10013. [PMID: 34160220 PMCID: PMC8297864 DOI: 10.1021/jacs.1c05757] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
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The oxidative cleavage
of C=C double bonds with molecular
oxygen to produce carbonyl compounds is an important transformation
in chemical and pharmaceutical synthesis. In nature, enzymes containing
the first-row transition metals, particularly heme and non-heme iron-dependent
enzymes, readily activate O2 and oxidatively cleave C=C
bonds with exquisite precision under ambient conditions. The reaction
remains challenging for synthetic chemists, however. There are only
a small number of known synthetic metal catalysts that allow for the
oxidative cleavage of alkenes at an atmospheric pressure of O2, with very few known to catalyze the cleavage of nonactivated
alkenes. In this work, we describe a light-driven, Mn-catalyzed protocol
for the selective oxidation of alkenes to carbonyls under 1 atm of
O2. For the first time, aromatic as well as various nonactivated
aliphatic alkenes could be oxidized to afford ketones and aldehydes
under clean, mild conditions with a first row, biorelevant metal catalyst.
Moreover, the protocol shows a very good functional group tolerance.
Mechanistic investigation suggests that Mn–oxo species, including
an asymmetric, mixed-valent bis(μ-oxo)-Mn(III,IV) complex, are
involved in the oxidation, and the solvent methanol participates in
O2 activation that leads to the formation of the oxo species.
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Affiliation(s)
- Zhiliang Huang
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - Renpeng Guan
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - Muralidharan Shanmugam
- Department of Chemistry and Photon Science Institute, The University of Manchester, Manchester M13 9PL, U.K
| | - Elliot L Bennett
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - Craig M Robertson
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
| | - Adam Brookfield
- Department of Chemistry and Photon Science Institute, The University of Manchester, Manchester M13 9PL, U.K
| | - Eric J L McInnes
- Department of Chemistry and Photon Science Institute, The University of Manchester, Manchester M13 9PL, U.K
| | - Jianliang Xiao
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K
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35
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Gopalsamy Selvaraj G, Selvarasu U, Manickam D, Karthikeyan P. Selective alcohol oxidation catalysed BY FeCl3 /novel glycine functionalised IONIC liquid. J INDIAN CHEM SOC 2021. [DOI: 10.1016/j.jics.2021.100099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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36
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Aman H, Chiu WH, Liu PH, Chuang GJ. Radical-mediated aerobic oxidation of substituted styrenes and stilbenes. NEW J CHEM 2021. [DOI: 10.1039/d1nj04755h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A 2,2-azobis(isobutyronitrile)-catalyzed oxidative cleavage of alkenes with molecular oxygen as the oxidant was described.
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Affiliation(s)
- Hasil Aman
- Department of Chemistry Chung Yuan Christian University Chungli 32023, Taoyuan city, Taiwan
| | - Wei-Hua Chiu
- Department of Chemistry Chung Yuan Christian University Chungli 32023, Taoyuan city, Taiwan
| | - Pin-Heng Liu
- Department of Chemistry Chung Yuan Christian University Chungli 32023, Taoyuan city, Taiwan
| | - Gary Jing Chuang
- Department of Chemistry Chung Yuan Christian University Chungli 32023, Taoyuan city, Taiwan
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37
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Wang X, Li Y, Li Z. Thiol-initiated photocatalytic oxidative cleavage of the CC bond in olefins and its extension to direct production of acetals from olefins. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01963a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Oxidative cleavage of a broad scope of olefins is realized over ZnIn2S4 under visible light, using air as oxidant and thiol as initiator. Coupled with the condensation between aldehydes/ketones and alcohols, this strategy can be used to yield acetals directly from olefins.
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Affiliation(s)
- Xinglin Wang
- Research Institute of Photocatalysis
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350116
| | - Yuanyuan Li
- Research Institute of Photocatalysis
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350116
| | - Zhaohui Li
- Research Institute of Photocatalysis
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350116
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38
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Acelas M, Sierra CA. The oligomer approach: An effective strategy to assess phenylene vinylene systems as organic heterogeneous photocatalysts in the degradation of aqueous indigo carmine dye. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112980] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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39
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Shibata S, Kamata K, Hara M. Aerobic oxidative CC bond cleavage of aromatic alkenes by a high valency iron-containing perovskite catalyst. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00245g] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
High-valency iron-containing perovskite catalyst BaFeO3−δ could efficiently promote the additive-free oxidative CC bond cleavage of various aromatic alkenes using O2 as the sole oxidant.
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Affiliation(s)
- Satomi Shibata
- Laboratory for Materials and Structures
- Institute of Innovative Research
- Tokyo Institute of Technology
- Yokohama-city
- Japan
| | - Keigo Kamata
- Laboratory for Materials and Structures
- Institute of Innovative Research
- Tokyo Institute of Technology
- Yokohama-city
- Japan
| | - Michikazu Hara
- Laboratory for Materials and Structures
- Institute of Innovative Research
- Tokyo Institute of Technology
- Yokohama-city
- Japan
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40
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Ou J, He S, Wang W, Tan H, Liu K. Highly efficient oxidative cleavage of olefins with O2 under catalyst-, initiator- and additive-free conditions. Org Chem Front 2021. [DOI: 10.1039/d1qo00175b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Without employing any external catalyst, initiator and additives, an efficient and eco-friendly protocol has been developed for the synthesis of carbonyl compound via 1,4-dioxane- promoted oxidation of olefins with atmospheric O2 as the sole oxidant.
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Affiliation(s)
- Jinhua Ou
- Department of Material and Chemical Engineering
- Hunan Institute of Technology
- Hengyang
- China
- Key Laboratory of Chemo/Biosensing and Chemometrics
| | - Saiyu He
- Department of Material and Chemical Engineering
- Hunan Institute of Technology
- Hengyang
- China
| | - Wei Wang
- Department of Material and Chemical Engineering
- Hunan Institute of Technology
- Hengyang
- China
| | - Hong Tan
- Department of Material and Chemical Engineering
- Hunan Institute of Technology
- Hengyang
- China
| | - Kaijian Liu
- Hunan Provincial Engineering Research Center for Ginkgo biloba
- Hunan University of Science and Engineering
- Yongzhou 425100
- China
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41
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Liu J, Pan J, Luo X, Qiu X, Zhang C, Jiao N. Selective Dealkenylative Functionalization of Styrenes via C-C Bond Cleavage. RESEARCH 2020; 2020:7947029. [PMID: 33274339 PMCID: PMC7676249 DOI: 10.34133/2020/7947029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/08/2020] [Indexed: 02/01/2023]
Abstract
As a readily available feedstock, styrene with about 25 million tons of global annual production serves as an important building block and organic synthon for the synthesis of fine chemicals, polystyrene plastics, and elastomers. Thus, in the past decades, many direct transformations of this costless styrene feedstock were disclosed for the preparation of high-value chemicals, which to date, generally performed on the functionalization of styrenes through the allylic C-H bond, C(sp2)-H bond, or the C=C double bond cleavage. However, the dealkenylative functionalization of styrenes via the direct C-C single bond cleavage is so far challenging and still unknown. Herein, we report the novel and efficient C-C amination and hydroxylation reactions of styrenes for the synthesis of valuable aryl amines and phenols via the site-selective C(Ar)-C(alkenyl) single bond cleavage. This chemistry unlocks the new transformation and application of the styrene feedstock and provides an efficient protocol for the late-stage modification of substituted styrenes with the site-directed dealkenylative amination and hydroxylation.
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Affiliation(s)
- Jianzhong Liu
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, 100191 Beijing, China
| | - Jun Pan
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, 100191 Beijing, China
| | - Xiao Luo
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, 100191 Beijing, China
| | - Xu Qiu
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, 100191 Beijing, China
| | - Cheng Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, 100191 Beijing, China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, 100191 Beijing, China.,State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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42
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Zhao P, Yu XX, Zhou Y, Huang C, Wu YD, Zhu YP, Wu AX. Arylacetylenes as two-carbon synthons: synthesis of eight-membered rings via C[triple bond, length as m-dash]C bond cleavage. Chem Commun (Camb) 2020; 56:12554-12557. [PMID: 32940307 DOI: 10.1039/d0cc05363e] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The first synthesis of eight-membered N-containing heterocycles by oxidative bicyclization/ring extension of arylacetylenes and aryl amines has been achieved. This protocol uses arylacetylene as an unusual two-carbon synthon by incorporating the two parts of the cracked C[triple bond, length as m-dash]C bond into the final product, which provides a new method for using arylacetylenes as two-carbon synthons and further enriches C[triple bond, length as m-dash]C bond cleavage methodology. Moreover, this multi-component reaction can provide diverse fused elegant eight-membered N-heterocycles under mild conditions with wide substrate scopes.
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Affiliation(s)
- Peng Zhao
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.
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43
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Peckh K, Lisicki D, Talik G, Orlińska B. Oxidation of Long-Chain α-Olefins Using Environmentally-Friendly Oxidants. MATERIALS 2020; 13:ma13204545. [PMID: 33066275 PMCID: PMC7602050 DOI: 10.3390/ma13204545] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/06/2020] [Accepted: 10/08/2020] [Indexed: 11/16/2022]
Abstract
Studies on the oxidation of α-olefins via the two-stage method are presented. The new method consisted of oxidizing C30+ α-olefins with hydrogen peroxide (2 equiv.) and subsequent oxidation with oxygen. Products with high acid numbers (29–82 mgKOH/g) and saponification numbers (64–140 mgKOH/g) were obtained and compared with products obtained using only hydrogen peroxide or oxygen. It was demonstrated that H2O2 can be partially replaced by oxygen in the oxidative cleavage reaction of α-olefins. N-hydroxyphthalimide in combination with Co(acac)2 demonstrated high activity in the oxidation stage using oxygen.
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44
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Tang L, Yang F, Cheng H, Tan C, Jin C, Chen H, Huang Y, Zhang S, Song W, Tan J. Copper-Catalyzed Oxidative Fragmentation of Alkynes with NFSI Provides Aryl Ketones. Org Lett 2020; 22:8618-8623. [DOI: 10.1021/acs.orglett.0c03201] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lin Tang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Fang Yang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Hao Cheng
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Chen Tan
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology (BUCT), Beijing 100029, China
| | - Chaochao Jin
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology (BUCT), Beijing 100029, China
| | - Hanfei Chen
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Yifan Huang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Shuaifei Zhang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Weihan Song
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China
| | - Jiajing Tan
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology (BUCT), Beijing 100029, China
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45
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Eşsiz S, Bozkaya U. Computational Study for the Reaction Mechanism of N-Hydroxyphthalimide-Catalyzed Oxidative Cleavage of Alkenes. J Org Chem 2020; 85:10136-10142. [PMID: 32672962 DOI: 10.1021/acs.joc.0c01472] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A computational study of N-hydroxyphthalimide-catalyzed aerobic oxidative cleavage of alkenes is carried out employing density functional theory and high-level coupled-cluster methods, such as coupled-cluster singles and doubles with perturbative triples [CCSD(T)]. Our results demonstrate that the reaction proceeds through the alkoxyl radicals, as opposed to the mechanism suggested by Jiao and co-workers (Org. Lett. 2012, 14, 4158-4161), in which the reaction proceeds via formation of the dioxetane ring. The barriers for the formation of dioxetane derivatives are computed to be higher than 50 kcal mol-1, while the barriers for the formation of alkoxyl radicals are as low as 13 kcal mol-1. Our results also demonstrate that epoxide derivatives can be formed as intermediates or byproducts under the reaction conditions.
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Affiliation(s)
- Selçuk Eşsiz
- Department of Chemistry, Faculty of Science, Atatürk University, Erzurum 25240, Turkey
| | - Uğur Bozkaya
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey
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46
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Hadian-Dehkordi L, Rezaei A, Ramazani A, Jaymand M, Samadian H, Zheng L, Deng X, Zheng H. Amphiphilic Carbon Quantum Dots as a Bridge to a Pseudohomogeneous Catalyst for Selective Oxidative Cracking of Alkenes to Aldehydes: A Nonmetallic Oxidation System. ACS APPLIED MATERIALS & INTERFACES 2020; 12:31360-31371. [PMID: 32598137 DOI: 10.1021/acsami.0c05025] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The oxidative cleavage of alkenes to the corresponding aldehydes using new amphiphilic carbon quantum dots (A-CQDs) as a pseudohomogeneous carbocatalyst is achieved for the first time through green and sustainable chemical processes. In this work, we successfully design a recyclable pseudohomogeneous catalyst based on A-CQDs, which is decorated with 1-aminopropyl-3-methyl-imidazolium chloride and stearic acid. The functionalization is conducted to introduce a hydrophilic/hydrophobic functionality on the surface of the catalyst to achieve high catalyst availability in polar and nonpolar media with the green goal of eliminating organic (co)solvents and additives. This amphiphilic carbocatalyst provides high mass transferability to the biphasic system, which is beneficial to promoting the oxidative cracking of a variety of olefins into corresponding aldehydes with a substrate/A-CQD ratio of 150. Around 87% of the substrates are converted to the related aldehydes using the carbocatalyst in the presence of H2O2, in pure water, without using a phase-transfer catalyst or any additives and organic solvents, which is comparable with the current metal-based cleavage systems. Surprisingly, A-CQDs exhibit high catalytic activity for the scission of electron-deficient C═C bond of coumarin derivatives, accompanied by the cleavage of C-O bonds to produce the corresponding salicylaldehyde derivatives without overoxidation to acid. As a brief conclusion, A-CQDs exhibit high conversion efficiency without significant loss of activity even after six catalytic cycles. The conversion of alkenes into aldehydes is fast and high-throughput without overoxidation to acids and is accompanied by excellent solubility and stability in various solvents. Moreover, the product and the catalyst are recoverable from the reaction medium by simple extraction. So, this pseudohomogeneous carbocatalyst promises new horizons in imminent "catalytic age". All in all, this paper provides a significant and novel advancement in carbocatalyst chemistry.
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Affiliation(s)
- Leila Hadian-Dehkordi
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 67145-1673, Iran
| | - Aram Rezaei
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 67145-1673, Iran
| | - Ali Ramazani
- Department of Chemistry, University of Zanjan, Zanjan 45371-38791, Iran
| | - Mehdi Jaymand
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 67145-1673, Iran
| | - Hadi Samadian
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 67145-1673, Iran
| | - Lingxia Zheng
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou 310032, China
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China
| | - Xiaolei Deng
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou 310032, China
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China
| | - Huajun Zheng
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou 310032, China
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China
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47
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Liu KJ, Deng JH, Zeng TY, Chen XJ, Huang Y, Cao Z, Lin YW, He WM. 1,2-Diethoxyethane catalyzed oxidative cleavage of gem-disubstituted aromatic alkenes to ketones under minimal solvent conditions. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.01.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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48
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Li C, Zhao P, Li R, Zhang B, Zhao W. Oxidation of Alkynyl Boronates to Carboxylic Acids, Esters, and Amides. Angew Chem Int Ed Engl 2020; 59:10913-10917. [PMID: 32219974 DOI: 10.1002/anie.202000988] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 03/16/2020] [Indexed: 12/13/2022]
Abstract
A general efficient protocol was developed for the synthesis of carboxylic acids, esters, and amides through oxidation of alkynyl boronates, generated directly from terminal alkynes. This protocol represents the first example of C(sp)-B bond oxidation. This approach displays a broad substrate scope, including aryl and alkyl alkynes, and exhibits excellent functional group tolerance. Water, primary and secondary alcohols, and amines are suitable nucleophiles for this transformation. Notably, amino acids and peptides can be used as nucleophiles, providing an efficient method for the synthesis and modification of peptides. The practicability of this methodology was further highlighted by the preparation of pharmaceutical molecules.
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Affiliation(s)
- Chenchen Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Pei Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Ruoling Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Bing Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Wanxiang Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
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49
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Firoozi S, Hosseini-Sarvari M. Photo-Difunctionalization and Photo-Oxidative Cleavage of the C-C Double Bond of Styrenes in the Presence of Nanosized Cadmium Sulfide (CdS) as a Highly Efficient Photo-Induced Reusable Nanocatalyst. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000448] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Somayeh Firoozi
- Department of Chemistry; College of Science; Shiraz University; 7194684795 Shiraz I.R. Iran
| | - Mona Hosseini-Sarvari
- Department of Chemistry; College of Science; Shiraz University; 7194684795 Shiraz I.R. Iran
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50
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