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Nguyen MT, Le N, Nguyen HT, Luong TDV, Nguyen VKT, Kawazoe Y, Tran PH, Pham-Tran NN. Mechanism of Friedel-Crafts Acylation Using Metal Triflate in Deep Eutectic Solvents: An Experimental and Computational Study. ACS OMEGA 2023; 8:271-278. [PMID: 36643563 PMCID: PMC9835085 DOI: 10.1021/acsomega.2c03944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
In this paper, we develop a method for Friedel-Crafts acylation using metal triflate in deep eutectic solvents. Various metal triflates were tested and provided good to excellent yields of corresponding ketone products. The density functional theory calculation revealed the metal effects on the formation of active intermediate acylium triflate as well as the acidic condition. The metal triflate in the deep eutectic solvent can be recovered and reused with a little loss in the catalytic activity.
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Affiliation(s)
- Minh-Tam
Thi Nguyen
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
| | - Nghia Le
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
- Institute
for Computational Science and Technology (ICST), Quang Trung Software City, Ho Chi Minh City 700000, Vietnam
| | - Hai Truong Nguyen
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
| | - Tram Diem Vu Luong
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
| | - Van Kieu Thuy Nguyen
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
| | - Yoshiyuki Kawazoe
- New
Industry Creation Hatchery Center, Tohoku
University, Sendai 980-8579, Japan
- Department
of Physics and Nanotechnology, SRM Institute
of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
- School of
Physics, Suranaree University of Technology, 111 University Venue Muang, Nakhon Ratchasima 30000, Thailand
| | - Phuong Hoang Tran
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
| | - Nguyen-Nguyen Pham-Tran
- Faculty
of Chemistry, University of Science, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University, Ho Chi
Minh City 700000, Vietnam
- Institute
for Computational Science and Technology (ICST), Quang Trung Software City, Ho Chi Minh City 700000, Vietnam
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2
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Saikia S, Devi R, Gogoi P, Saikia L, Choudary BM, Raja T, Deka P, Deka RC. Regioselective Friedel-Crafts Acylation Reaction Using Single Crystalline and Ultrathin Nanosheet Assembly of Scrutinyite-SnO 2. ACS OMEGA 2022; 7:32225-32237. [PMID: 36120068 PMCID: PMC9476169 DOI: 10.1021/acsomega.2c03555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Peculiar physicochemical properties of two-dimensional (2D) nanomaterials have attracted research interest in developing new synthetic technology and exploring their potential applications in the field of catalysis. Moreover, ultrathin metal oxide nanosheets with atomic thickness exhibit abnormal surficial properties because of the unique 2D confinement effect. In this work, we present a facile and general approach for the synthesis of single crystalline and ultrathin 2D nanosheets assembly of scrutinyite-SnO2 through a simple solvothermal method. The structural and compositional characterization using X-ray diffraction (Rietveld refinement analysis), high-resolution transmission electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, and so on reveal that the as-synthesized 2D nanosheets are ultrathin and single crystallized in the scrutinyite-SnO2 phase with high purity. The ultrathin SnO2 nanosheets show predominant growth in the [011] direction on the main surface having a thickness of ca. 1.3 nm. The SnO2 nanosheets are further employed for the regioselective Friedel-Crafts acylation to synthesize aromatic ketones that have potential significance in chemical industry as synthetic intermediates of pharmaceuticals and fine chemicals. A series of aromatic substrates acylated over the SnO2 nanosheets have afforded the corresponding aromatic ketones with up to 92% yield under solvent-free conditions. Comprehensive catalytic investigations display the SnO2 nanosheet assembly as a better catalytic material compared to the heterogeneous metal oxide catalysts used so far in the view of its activity and reusability in solvent-free reaction conditions.
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Affiliation(s)
- Sudakhina Saikia
- Department
of Chemical Sciences, Tezpur University, Napaam, Tezpur 784028, India
| | - Rasna Devi
- Department
of Chemical Sciences, Tezpur University, Napaam, Tezpur 784028, India
| | - Pranjal Gogoi
- Catalysis
and Inorganic Chemistry Division, CSIR-National
Chemical Laboratory, Pune 411008, India
| | - Lakshi Saikia
- Materials
Sciences and Technology Division, CSIR-North
East Institute of Science and Technology, Jorhat 785006, India
| | | | - Thirumalaiswamy Raja
- Catalysis
and Inorganic Chemistry Division, CSIR-National
Chemical Laboratory, Pune 411008, India
| | - Pangkita Deka
- Department
of Chemical Sciences, Tezpur University, Napaam, Tezpur 784028, India
- Department
of Chemistry, Jorhat Engineering College, Garmur, Jorhat 785007, India
| | - Ramesh C. Deka
- Department
of Chemical Sciences, Tezpur University, Napaam, Tezpur 784028, India
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3
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Yamada T, Hashimoto Y, Tanaka K, Morita N, Tamura O. Cationic palladium(ii)-catalyzed synthesis of substituted pyridines from α,β-unsaturated oxime ethers. RSC Adv 2022; 12:21548-21557. [PMID: 36043185 PMCID: PMC9351437 DOI: 10.1039/d2ra03875g] [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: 06/23/2022] [Accepted: 07/14/2022] [Indexed: 11/21/2022] Open
Abstract
An efficient method for the synthesis of multi-substituted pyridines from β-aryl-substituted α,β-unsaturated oxime ethers and alkenes via Pd-catalyzed C–H activation has been developed. The method, using Pd(OAc)2 and a sterically hindered pyridine ligand, provides access to various multi-substituted pyridines with complete regioselectivity. Mechanistic studies suggest that the pyridine products are formed by Pd-catalyzed electrophilic C–H alkenylation of α,β-unsaturated oxime followed by aza-6π-electrocyclization. The utility of this method is showcased by the synthesis of 4-aryl-substituted pyridine derivatives, which are difficult to synthesize efficiently using previously reported Rh-catalyzed strategies with alkenes. An efficient method for the synthesis of multi-substituted pyridines from α,β-unsaturated oxime ethers via cationic Pd(ii)-catalyzed C–H activation has been developed.![]()
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Affiliation(s)
- Takahiro Yamada
- Showa Pharmaceutical University Machida Tokyo 194-8543 Japan
| | | | - Kosaku Tanaka
- Showa Pharmaceutical University Machida Tokyo 194-8543 Japan
| | | | - Osamu Tamura
- Showa Pharmaceutical University Machida Tokyo 194-8543 Japan
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4
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Zhao C, Zhang H, Lei Z, Miao S, Sun H, Sun Y, Zhang W, Jia M. Graphitic carbon-wrapped iron nanoparticles derived from a melamine-modified metal-organic framework as efficient Friedel-Crafts acylation catalysts. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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5
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Pan A, Chojnacka M, Crowley R, Göttemann L, Haines BE, Kou KGM. Synergistic Brønsted/Lewis acid catalyzed aromatic alkylation with unactivated tertiary alcohols or di- tert-butylperoxide to synthesize quaternary carbon centers. Chem Sci 2022; 13:3539-3548. [PMID: 35432882 PMCID: PMC8943850 DOI: 10.1039/d1sc06422c] [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: 11/18/2021] [Accepted: 02/25/2022] [Indexed: 11/24/2022] Open
Abstract
Dual Brønsted/Lewis acid catalysis involving environmentally benign, readily accessible protic acid and iron promotes site-selective tert-butylation of electron-rich arenes using di-tert-butylperoxide. This transformation inspired the development of a synergistic Brønsted/Lewis acid catalyzed aromatic alkylation that fills a gap in the Friedel–Crafts reaction literature by employing unactivated tertiary alcohols as alkylating agents, leading to new quaternary carbon centers. Corroborated by DFT calculations, the Lewis acid serves a role in enhancing the acidity of the Brønsted acid. The use of non-allylic, non-benzylic, and non-propargylic tertiary alcohols represents an underexplored area in Friedel–Crafts reactivity. Dual Brønsted/Lewis acid catalysis involving environmentally benign, readily accessible protic acid and iron promotes site-selective tert-alkylation of arenes using di-tert-butylperoxide and tertiary alcohols.![]()
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Affiliation(s)
- Aaron Pan
- Department of Chemistry, University of California, Riverside 501 Big Springs Road Riverside CA 92521 USA
| | - Maja Chojnacka
- Department of Chemistry, University of California, Riverside 501 Big Springs Road Riverside CA 92521 USA
| | - Robert Crowley
- Department of Chemistry, University of California, Riverside 501 Big Springs Road Riverside CA 92521 USA
| | - Lucas Göttemann
- Department of Chemistry, University of California, Riverside 501 Big Springs Road Riverside CA 92521 USA
| | - Brandon E Haines
- Department of Chemistry, Westmont College 955 La Paz Road Santa Barbara CA 93108 USA
| | - Kevin G M Kou
- Department of Chemistry, University of California, Riverside 501 Big Springs Road Riverside CA 92521 USA
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6
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Paris TJ, Schwartz C, Sundall E, Willand-Charnley R. Rapid, One-Step Synthesis of α-Ketoacetals via Electrophilic Etherification. J Org Chem 2021; 86:14797-14811. [PMID: 34569793 DOI: 10.1021/acs.joc.1c01588] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Herein, we report a rapid, one-step synthesis of α-ketoacetals via electrophilic etherification of α-alkoxy enolates and monoperoxyacetals. Methyl, primary, and secondary α-ketoacetals were obtained in 44-63% yields from tetrahydropyranyl substrates; using methyl tetrahydropyranyl, alkyl tetrahydropyranyl, or methyl tetrahydrofuranyl peroxyacetals, however, methyl and primary products were isolated in 66-90% yields. The present method is applied to C-O bond formation at tertiary carbons, via alkyl and methyl peroxyacetals, with yields of 25-65%. Intermolecular "alkoxyl" transfer, from peroxyacetal to α-alkoxy enolate, relies heavily on decreased steric bulk surrounding the peroxide bond and site of etherification; additionally, we found the α-OCH3 group to be critical in ensuring product formation. α-Ketoacetals demonstrated excellent reactivity, as selective, nucleophilic attack at the unprotected carbonyl furnished α-hydroxy acetals in 80-100% yields; subsequent hydrolysis of the foregoing compounds provided α-hydroxy aldehydes in yields of 58-90%.
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Affiliation(s)
- Timothy J Paris
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, South Dakota 57007, United States
| | - Chris Schwartz
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, South Dakota 57007, United States
| | - Eric Sundall
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, South Dakota 57007, United States
| | - Rachel Willand-Charnley
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, South Dakota 57007, United States
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7
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Kalshetti R, Ramana CV. Oxidative Rearrangement of Stilbenes to 2,2-Diaryl-2-hydroxyacetaldehydes. ACS OMEGA 2020; 5:25199-25208. [PMID: 33043198 PMCID: PMC7542859 DOI: 10.1021/acsomega.0c03328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 08/13/2020] [Indexed: 06/11/2023]
Abstract
A one-pot oxone-mediated/iodine-catalyzed oxidative rearrangement of stilbenes leading to 2,2-diaryl-2-hydroxyacetaldehydes is described. Control experiments revealed that a 2,2-diarylacetaldehyde was initially formed that undergoes subsequent α-hydroxylation. The resulting α-hydroxyaldehydes have been subjected to a one-pot Still-Gennari olefination followed by cyclization, leading to 5,5-diaryl-γ-butenolides.
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Affiliation(s)
- Rupali
G. Kalshetti
- Division
of Organic Chemistry, CSIR-National Chemical
Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
- Academy
of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110002, India
| | - Chepuri V. Ramana
- Division
of Organic Chemistry, CSIR-National Chemical
Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
- Academy
of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan, 2 Rafi Marg, New Delhi 110002, India
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8
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Lielpetere A, Jirgensons A. Friedel-Crafts Alkylation with Carbenium Ions Generated by Electrochemical Oxidation of Stannylmethyl Ethers. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000568] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Anna Lielpetere
- Latvian Institute of Organic Synthesis; Aizkraukles Street 21 L V-1006 Riga Latvia
| | - Aigars Jirgensons
- Latvian Institute of Organic Synthesis; Aizkraukles Street 21 L V-1006 Riga Latvia
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9
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Kundu S, Banerjee A, Maji MS. Brønsted Acid-Catalyzed Tandem Pinacol-Type Rearrangement for the Synthesis of α-(3-Indolyl) Ketones by Using α-Hydroxy Aldehydes. J Org Chem 2019; 84:16003-16012. [PMID: 31747752 DOI: 10.1021/acs.joc.9b02474] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Samrat Kundu
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Ankush Banerjee
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
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10
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Banerjee A, Maji MS. A Brønsted Acid Catalyzed Cascade Reaction for the Conversion of Indoles to α-(3-Indolyl) Ketones by Using 2-Benzyloxy Aldehydes. Chemistry 2019; 25:11521-11527. [PMID: 31283058 DOI: 10.1002/chem.201902268] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 07/04/2019] [Indexed: 11/10/2022]
Abstract
A Brønsted acid catalyzed, operationally simple, scalable route to several functionalized α-(3-indolyl) ketones has been developed and the long-standing regioisomeric issue has been eliminated by choosing appropriate carbonyls. A readily available and cheap bottle reagent was used as the catalyst. This protocol was also applicable to the synthesis of densely functionalized α-(3-pyrrolyl) ketones. A detailed mechanistic study confirmed the involvement of enolether as a reaction intermediate. Several postsynthetic modifications along with easy access to β-carboline, tryptamines, tryptophols, and spiro-indolenine proclaim the synthetic utility of this powerful building block. On the basis of this concept, functionalized carbazoles were constructed by a cascade annulation strategy.
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Affiliation(s)
- Ankush Banerjee
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, W.B., India
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, W.B., India
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11
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Bhatt SV, Bhatt SV, Fotie J. Pt-catalyzed O-silylation of oximes by tri-substituted organosilanes. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Schlegel M, Schneider C. Iron(III)-Catalyzed (4 + 2)-Cycloannulation of 2-Hydroxy Ketoxime Ethers with Indol-2-ylamides: Synthesis of Indole-Fused 2-Piperidinones. J Org Chem 2019; 84:5886-5892. [PMID: 30917274 DOI: 10.1021/acs.joc.9b00261] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly regio- and diastereoselective (4 + 2)-cycloannulation process of indanone-derived 2-hydroxy ketoxime ethers with 1,4-bisnucleophilic indol-2-ylamides has been developed. In the presence of 5 mol % FeCl3, densely functionalized 2-piperidinones containing two new σ-bonds and two vicinal quaternary stereogenic centers were formed under mild reaction conditions in a one-pot operation. Moreover, most of the products directly precipitated out of the solution and were isolated by simple filtration without purification by column chromatography.
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Affiliation(s)
- Marcel Schlegel
- Institut für Organische Chemie , Universität Leipzig , Johannisallee 29 , D-04103 Leipzig , Germany
| | - Christoph Schneider
- Institut für Organische Chemie , Universität Leipzig , Johannisallee 29 , D-04103 Leipzig , Germany
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13
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Rezayee NM, Lauridsen VH, Næsborg L, Nguyen TVQ, Tobiesen HN, Jørgensen KA. Oxidative organocatalysed enantioselective coupling of indoles with aldehydes that forms quaternary carbon stereocentres. Chem Sci 2019; 10:3586-3591. [PMID: 30996950 PMCID: PMC6432613 DOI: 10.1039/c9sc00196d] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 02/12/2019] [Indexed: 12/25/2022] Open
Abstract
The first organocatalysed, metal-free cross-nucleophile coupling of indoles with α-branched aldehydes forming acyclic stereoselective quaternary carbon centres is presented. Applying an amino acid-derived catalyst with suitable organic oxidants affords the desired enantioenriched indole functionalised products with moderate to excellent yield and enantioselectivity. Two metal-free oxidative protocols employing either DDQ or a sequential approach that uses two organocatalysts to facilitate the use of O2 as the terminal oxidant are disclosed. These methods are compatible with various indoles ranging from electron-rich to -deficient substituents at the C-2, -5, -6, and -7-positions reacting with a series of different α-branched aldehydes.
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Affiliation(s)
- Nomaan M Rezayee
- Department of Chemistry , Aarhus University , DK-8000 Aarhus C , Denmark .
| | - Vibeke H Lauridsen
- Department of Chemistry , Aarhus University , DK-8000 Aarhus C , Denmark .
| | - Line Næsborg
- Department of Chemistry , Aarhus University , DK-8000 Aarhus C , Denmark .
| | - Thanh V Q Nguyen
- Department of Chemistry , Aarhus University , DK-8000 Aarhus C , Denmark .
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14
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Zhang H, Song X, Hu D, Zhang W, Jia M. Iron-based nanoparticles embedded in a graphitic layer of carbon architectures as stable heterogeneous Friedel–Crafts acylation catalysts. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00598f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Carbon supported iron nanoparticles were prepared by pyrolyzing Fe-MOF material of Fe-diamine-dicarboxylic acid, and showed excellent catalytic activity and stability for the Friedel–Crafts acylation of aromatic compounds with acyl chloride.
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Affiliation(s)
- Hao Zhang
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- PR China
| | - Xiaojing Song
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- PR China
| | - Dianwen Hu
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- PR China
| | - Wenxiang Zhang
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- PR China
| | - Mingjun Jia
- Key Laboratory of Surface and Interface Chemistry of Jilin Province
- College of Chemistry
- Jilin University
- Changchun
- PR China
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