1
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Shen L, Wu X, Shi L, Xu X, Zhang J, Li F. Selective N-Alkylation of Aminobenzenesulfonamides with Alcohols for the Synthesis of Amino-( N-alkyl)benzenesulfonamides Catalyzed by a Metal-Ligand Bifunctional Ruthenium Catalyst. J Org Chem 2024; 89:8397-8406. [PMID: 38825774 DOI: 10.1021/acs.joc.4c00166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
[(p-Cymene)Ru(2,2'-bpyO)(H2O)] was proven to be an efficient catalyst for the synthesis of amino-(N-alkyl)benzenesulfonamides via selective N-alkylation of aminobenzenesulfonamides with alcohols. It was confirmed that functional groups in the bpy ligand are crucial for the activity of catalysts. Furthermore, the utilization of this catalytic system for the preparation of a biologically active compound was presented.
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Affiliation(s)
- Lu Shen
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, P. R. China
| | - Xingliang Wu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, P. R. China
| | - Lili Shi
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, P. R. China
| | - Xiangchao Xu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, P. R. China
| | - Jin Zhang
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, P. R. China
| | - Feng Li
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, P. R. China
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
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2
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Khatua M, Goswami B, Devi A, Kamal, Hans S, Samanta S. A Phosphine-Oxide Cobalt(II) Complex and Its Catalytic Activity Studies toward Alcohol Dehydrogenation Triggered Direct Synthesis of Imines and Quinolines. Inorg Chem 2024; 63:9786-9800. [PMID: 38739882 DOI: 10.1021/acs.inorgchem.4c00086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Herein, a new pincer-like amino phosphine donor ligand, H2L1, and its phosphine-oxide analog, H2L2, were synthesized. Subsequently, cobalt(II) complexes 1 and 2 were synthesized by the reaction of anhydrous Co(II)Cl2 with ligands H2L1 and H2L2, respectively. The ligands and complexes were fully characterized by various physicochemical and spectroscopic characterization techniques. Finally, the identity of the complexes 1 and 2 was confirmed by single crystal X-ray structure determination. The phosphine ligand containing complex 1 was converted to the phosphine oxide ligand containing complex 2 in air in acetonitrile solution. Both complexes 1 and 2 were investigated as precatalysts for alcohol dehydrogenation-triggered synthesis of imines in air. The phosphine-oxide complex 2 was more efficient than the phosphine complex 1. A wide array of alcohols and amines were successfully reacted in a mild condition to result in imines in good to excellent yields. Precatalyst 2 was also highly efficient for the synthesis of varieties of quinolines in air. As H2L2 in 2 has side arms that can be deprotonated, we investigated complex 2 for its base (KOtBu) promoted deprotonation events by various spectroscopic studies and DFT calculations. These studies have shown that mono deprotonation of the amine side arm attached to the pyridine is quite feasible, and deprotonation of complex 2 leads to a dearomatized pyridyl ring containing complex 2a. The mechanistic investigations of the catalytic reaction, by a combination of experimental and computational studies, have suggested that the dearomatized complex, 2a acted as an active catalyst. The reaction proceeded through the hydride transfer pathway. The activation barrier of this step was calculated to be 26.5 kcal/mol, which is quite consistent with the experimental reaction temperature under aerobic conditions. Although various pincer-like complexes are explored for such reactions, phosphine oxide ligand-containing complexes are still unexplored.
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Affiliation(s)
- Manas Khatua
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal 741246, India
| | - Bappaditya Goswami
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal 741246, India
| | - Ambika Devi
- Department of Chemistry, Indian Institute of Technology (IIT) Jammu, Jagti, Jammu, Jammu and Kashmir 181221, India
| | - Kamal
- Department of Chemistry, Indian Institute of Technology (IIT) Jammu, Jagti, Jammu, Jammu and Kashmir 181221, India
| | - Shivali Hans
- Department of Chemistry, Indian Institute of Technology (IIT) Jammu, Jagti, Jammu, Jammu and Kashmir 181221, India
| | - Subhas Samanta
- Department of Chemistry, Indian Institute of Technology (IIT) Jammu, Jagti, Jammu, Jammu and Kashmir 181221, India
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3
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Kumar Chaudhary V, Kukreti P, Sharma K, Kumar K, Singh S, Kumari S, Ghosh K. A sustainable strategic approach for N-alkylation of amines with activation of alcohols triggered via a hydrogen auto-transfer reaction using a Pd(II) complex: evidence for metal-ligand cooperativity. Dalton Trans 2024; 53:8740-8749. [PMID: 38712566 DOI: 10.1039/d4dt00864b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
This work describes a new well-defined, air-stable, phosphine free palladium(II) [Pd(L)Cl] (1) catalyst. This catalyst was utilized for N-alkylation of amines and indole synthesis where H2O was found to be the by-product. A broad range of aromatic amines were alkylated using this homogeneous catalyst with a catalyst loading of 0.1 mol%. Greener aromatic and aliphatic primary alcohols were utilized and a hydrogen auto-transfer strategy via a metal-ligand cooperative approach was investigated. The precursor of the antihistamine-containing drug molecule tripelennamine was synthesized on a gram scale for large-scale applicability of the current synthetic methodology. A number of control experiments were performed to investigate the possible reaction pathway and the outcomes of these experiments indicated the azo-chromophore as a hydrogen reservoir during the catalytic cycle.
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Affiliation(s)
- Virendra Kumar Chaudhary
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
| | - Prashant Kukreti
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
| | - Keshav Sharma
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
| | - Kapil Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
| | - Sain Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
| | - Sheela Kumari
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
| | - Kaushik Ghosh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
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4
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Nekvinda J, Bavol D, Litecká M, Tüzün EZ, Dušek M, Grüner B. Synthetic routes to carbon substituted cobalt bis(dicarbollide) alkyl halides and aromatic amines along with closely related irregular pathways. Dalton Trans 2024; 53:5816-5826. [PMID: 38465373 DOI: 10.1039/d4dt00072b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Carbon substituted cobalt bis(dicarbollide) alkyl halides [(1-X-(CH2)n-1,2-C2B9H10)(1,2-C2B9H11)-3,3'-Co]Me4N (X = Br, I; n = 1-3) are prepared in high yields (>90%) from their corresponding alcohols without side skeletal substitutions. These species offer access to the synthesis of aromatic cobalt bis(dicarbollide) amines, however only for particular terminal halogen substitution, the propylene pendant arm, and under appropriately controlled reaction conditions. Thus, the compounds substituted at cage carbon atoms with a propylene linker and terminal aromatic amine groups could be prepared. In other cases, numerous irregular reaction pathways occur, undoubtedly as a consequence of the bulky anionic boron cage in close proximity to the reaction site. Among them, an unusual intramolecular hydroboration forming rigidified carbon-to-boron bridged isomeric anions with an asymmetric structure that correspond to formulae [(1,8'-μ-C2H4)-(1,2-C2B9H10)(1',2'-C2B9H10)-3,3'-Co]- and [(1,7'-μ-C2H4)-(1,2-C2B9H10)(1',2'-C2B9H10)-3,3'-Co]- is described herein and the former isomer is structurally characterized. This product with a restrained geometry is widely accessible through nucleophile and/or thermally induced decomposition of (pseudo)halides attached to the cage via an ethylene linker. Surprisingly enough, also doubly bridged isomeric species [(1,8-μ-C2H4-1,2-C2B9H9)2-3,3'-Co]- and [(1,7-μ-C2H4-1,2-C2B9H9)2-3,3'-Co]- are available in good yield using these methods. Furthermore, other more typical side reactions are discussed, i.e. nucleophilic reactions of propyl halides with Me3N formed apparently by disproportionation of Me4N+ at higher temperatures or with pyridine used as a base.
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Affiliation(s)
- Jan Nekvinda
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, Hlavní 1001, Husinec-Řež 25068, Czech Republic.
| | - Dmytro Bavol
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, Hlavní 1001, Husinec-Řež 25068, Czech Republic.
| | - Miroslava Litecká
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, Hlavní 1001, Husinec-Řež 25068, Czech Republic.
| | - Ece Zeynep Tüzün
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, Hlavní 1001, Husinec-Řež 25068, Czech Republic.
| | - Michal Dušek
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, Prague 8, 182 21, Czech Republic
| | - Bohumír Grüner
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, Hlavní 1001, Husinec-Řež 25068, Czech Republic.
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5
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Mocci R, Atzori L, Baratta W, De Luca L, Porcheddu A. N-Alkylation of aromatic amines with alcohols by using a commercially available Ru complex under mild conditions. RSC Adv 2023; 13:34847-34851. [PMID: 38035248 PMCID: PMC10688395 DOI: 10.1039/d3ra06751c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 11/09/2023] [Indexed: 12/02/2023] Open
Abstract
An N-alkylation procedure has been developed under very mild conditions using a known commercially available Ru-based catalyst. As a result, a wide range of aromatic primary amines has been selectively alkylated with several primary alcohols, yielding the corresponding secondary amines in high yields. The methodology also enables the methylation of anilines in refluxing methanol and the preparation of a set of heterocycles in a straightforward way.
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Affiliation(s)
- Rita Mocci
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria S.S. 554 bivio per Sestu 09042 Monserrato (CA) Italy
| | - Luciano Atzori
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria S.S. 554 bivio per Sestu 09042 Monserrato (CA) Italy
| | - Walter Baratta
- Dipartimento di Scienze Agroalimentari, Ambientali e Animali, Università degli Studi di Udine via delle Scienze 206 33100 Udine Italy
| | - Lidia De Luca
- Dipartimento di Scienze Chimiche, FIsiche, Matematiche e Naturali, Università degli Studi di Sassari via Vienna 2 07100 Sassari Italy
| | - Andrea Porcheddu
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria S.S. 554 bivio per Sestu 09042 Monserrato (CA) Italy
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6
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Ke Z, Wang Y, Zhao Y, Tang M, Zeng W, Wang Y, Chang X, Han B, Liu Z. Ionic-Liquid Hydrogen-Bonding Promoted Alcohols Amination over Cobalt Catalyst via Dihydrogen Autotransfer Mechanism. CHEMSUSCHEM 2023; 16:e202300513. [PMID: 37191041 DOI: 10.1002/cssc.202300513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 05/17/2023]
Abstract
Higher amines are important high-valuable chemicals with wide applications, and amination of alcohols is a green route to them, which however generally suffers from harsh reaction conditions and use of equivalent base. Herein, we report an ionic-liquid (IL) hydrogen-bonding promoted dihydrogen autotransfer strategy for amination of alcohols to higher amines over cobalt catalyst under base-free conditions. Co(BF4 )2 ⋅ 6 H2 O complexed with triphos and IL (e. g., tetrabutylphosphonium tetrafluoroborate, [P4444 ][BF4 ]) shows high performances for the reaction and is tolerant of a wide scope of amines and alcohols, affording higher amines in good to excellent yields. Mechanism investigation indicates that the [BF4 ]- anion activates the alcohol via hydrogen bonding, promoting transfer of both hydroxyl H and α-H atoms of alcohol to the cobalt catalyst to form an aldehyde intermediate and cobalt dihydride complex, which are involved in the subsequent reductive amination. This strategy provides a green and effective route for alcohol amination, which may have promising applications in alcohol-involved alkylation reactions.
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Affiliation(s)
- Zhengang Ke
- Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing, 100190, China
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, China
| | - Yuepeng Wang
- Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yanfei Zhao
- Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Minhao Tang
- Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Zeng
- Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ying Wang
- Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoqian Chang
- Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Buxing Han
- Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhimin Liu
- Institute of Chemistry, Chinese Academy of Sciences, No. 2, Zhongguancun Beiyijie, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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7
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Tohidi MM, Paymard B, Vasquez-García SR, Fernández-Quiroz D. Recent progress in applications of cobalt catalysts in organic reactions. Tetrahedron 2023. [DOI: 10.1016/j.tet.2023.133352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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8
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Chakraborty S, Mondal R, Pal S, Guin AK, Roy L, Paul ND. Zn(II)-Catalyzed Selective N-Alkylation of Amines with Alcohols Using Redox Noninnocent Azo-Aromatic Ligand as Electron and Hydrogen Reservoir. J Org Chem 2023; 88:771-787. [PMID: 36577023 DOI: 10.1021/acs.joc.2c01773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We report a sustainable and eco-friendly approach for selective N-alkylation of various amines by alcohols, catalyzed by a well-defined Zn(II)-catalyst, Zn(La)Cl2 (1a), bearing a tridentate arylazo scaffold. A total of 57 N-alkylated amines were prepared in good to excellent yields, out of which 17 examples are new. The Zn(II)-catalyst shows wide functional group tolerance, is compatible with the synthesis of dialkylated amines via double N-alkylation of diamines, and produces the precursors in high yields for the marketed drugs tripelennamine and thonzonium bromide in gram-scale reactions. Control reactions and DFT studies indicate that electron transfer events occur at the azo-chromophore throughout the catalytic process, which shuttles between neutral azo, one-electron reduced azo-anion radical, and two-electron reduced hydrazo forms acting both as electron and hydrogen reservoir, enabling the Zn(II)-catalyst for N-alkylation reaction.
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Affiliation(s)
- Subhajit Chakraborty
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Rakesh Mondal
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Subhasree Pal
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Amit Kumar Guin
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
| | - Lisa Roy
- Institute of Chemical Technology Mumbai - IOC Odisha Campus Bhubaneswar, Bhubaneswar 751013, India
| | - Nanda D Paul
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Botanic Garden, Howrah 711103, India
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9
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Thajai N, Rachtanapun P, Thanakkasaranee S, Chaiyaso T, Phimolsiripol Y, Leksawasdi N, Sommano SR, Sringarm K, Chaiwarit T, Ruksiriwanich W, Jantrawut P, Kodsangma A, Ross S, Worajittiphon P, Punyodom W, Jantanasakulwong K. Antimicrobial thermoplastic starch reactive blend with chlorhexidine gluconate and epoxy resin. Carbohydr Polym 2022; 301:120328. [DOI: 10.1016/j.carbpol.2022.120328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 10/23/2022] [Accepted: 11/07/2022] [Indexed: 11/13/2022]
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10
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Gayathri S, Viswanathamurthi P, Bertani R, Sgarbossa P. Ruthenium Complexes Bearing α-Diimine Ligands and Their Catalytic Applications in N-Alkylation of Amines, α-Alkylation of Ketones, and β-Alkylation of Secondary Alcohols. ACS OMEGA 2022; 7:33107-33122. [PMID: 36157732 PMCID: PMC9494662 DOI: 10.1021/acsomega.2c03200] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/24/2022] [Indexed: 06/16/2023]
Abstract
New Ru(II) complexes encompassing α-diimine ligands were synthesized by reacting ruthenium precursors with α-diimine hydrazones. The new ligands and Ru(II) complexes were analyzed by analytical and various spectroscopic methods. The molecular structures of L1 and complexes 1, 3, and 4 were determined by single-crystal XRD studies. The results reveal a distorted octahedral geometry around the Ru(II) ion for all complexes. Moreover, the new ruthenium complexes show efficient catalytic activity toward the C-N and C-C coupling reaction involving alcohols. Particularly, complex 3 demonstrates effective conversion in N-alkylation of aromatic amines, α-alkylation of ketones, and β-alkylation of alcohols.
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Affiliation(s)
- Sekar Gayathri
- Department
of Chemistry, Periyar University, Salem 636 011, Tamil Nadu, India
| | | | - Roberta Bertani
- Department
of Industrial Engineering, University of
Padova, via F. Marzoloa, Padova 35131, Italy
| | - Paolo Sgarbossa
- Department
of Industrial Engineering, University of
Padova, via F. Marzoloa, Padova 35131, Italy
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11
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Ranjan R, Chakraborty A, Kyarikwal R, Ganguly R, Mukhopadhyay S. A binuclear Cu(II) complex as an efficient photocatalyst for N-alkylation of aromatic amines. Dalton Trans 2022; 51:13288-13300. [PMID: 35983724 DOI: 10.1039/d2dt01771g] [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
Visible-light driven photoreactions using transition metal complexes as catalysts are currently a research hotspot in developing environmentally friendly sustainable processes. To develop a potential copper-based photocatalyst, a binuclear Cu(II) complex has been synthesized using a Mannich base ligand viz. 2,4-dichloro-6-((4-(2-hydroxyethyl)piperazin-1-yl)methyl)phenol (H2L). The photocatalyst has been characterized using ESI-MS and single crystal X-ray diffraction. Under the irradiation of visible light, the catalyst can catalyze hydrogen auto-transfer in N-alkylated amine formation and benzyl alcohol oxidation reactions with excellent conversion. A plausible mechanistic pathway for catalytic reactions has been explored through ESI-MS spectrometric, UV-Vis spectroscopic and computational studies.
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Affiliation(s)
- Rishi Ranjan
- Department of Chemistry, School of Basic Sciences, Indian Institute of Technology Indore, Simrol, Indore 453552, India.
| | - Argha Chakraborty
- Department of Chemistry, School of Basic Sciences, Indian Institute of Technology Indore, Simrol, Indore 453552, India.
| | - Reena Kyarikwal
- Department of Chemistry, School of Basic Sciences, Indian Institute of Technology Indore, Simrol, Indore 453552, India.
| | | | - Suman Mukhopadhyay
- Department of Chemistry, School of Basic Sciences, Indian Institute of Technology Indore, Simrol, Indore 453552, India.
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12
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Lu Y, Chai H, Yu K, Huang C, Li Y, Wang J, Ma J, Tan W, Zhang G. A reusable MOF supported single-site nickel-catalyzed direct N-alkylation of anilines with alcohols. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132993] [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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13
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Wang Y, Zhang FL, Liu ZJ, Yao ZJ. Half-Sandwich Iridium Complexes with Hydrazone Ligands: Synthesis and Catalytic Activity in N-Alkylation of Anilines or Nitroarenes with Alcohols via Hydrogen Autotransfer. Inorg Chem 2022; 61:10310-10320. [PMID: 35767836 DOI: 10.1021/acs.inorgchem.2c00703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Here, we synthesize a series of hydrazone-based N,O-chelate half-sandwich iridium complexes through a facile route. All air-stable iridium complexes show high catalytic activity in N-alkylation of a broad scope of aniline derivatives and alcohols with liberating water as the sole byproduct. This reaction provides a smooth route to synthesize diverse monoalkylated amines in good to excellent yields at moderate temperature with a low catalyst loading. Moreover, the challenging N-alkylation process using nitroarene substrates as coupling partners is also carried out in this catalytic system. The mechanistic study shows that the present iridium catalysis process proceeds through a hydrogen borrowing mechanism. All iridium(III) complexes 1-4 are characterized by infrared (IR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, and elemental analysis.
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Affiliation(s)
- Yang Wang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Fang-Lei Zhang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Zhen-Jiang Liu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China
| | - Zi-Jian Yao
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China.,Key Lab of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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14
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Podyacheva E, Afanasyev OI, Vasilyev DV, Chusov D. Borrowing Hydrogen Amination Reactions: A Complex Analysis of Trends and Correlations of the Various Reaction Parameters. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01133] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Evgeniya Podyacheva
- A.N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, Vavilova St. 28, Moscow 119991, Russian Federation
- National Research University Higher School of Economics, Miasnitskaya Str. 20, Moscow 101000, Russian Federation
| | - Oleg I. Afanasyev
- A.N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, Vavilova St. 28, Moscow 119991, Russian Federation
| | - Dmitry V. Vasilyev
- Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Egerlandstr. 3, 91058 Erlangen, Germany
| | - Denis Chusov
- A.N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, Vavilova St. 28, Moscow 119991, Russian Federation
- National Research University Higher School of Economics, Miasnitskaya Str. 20, Moscow 101000, Russian Federation
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15
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Das K, Waiba S, Jana A, Maji B. Manganese-catalyzed hydrogenation, dehydrogenation, and hydroelementation reactions. Chem Soc Rev 2022; 51:4386-4464. [PMID: 35583150 DOI: 10.1039/d2cs00093h] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The emerging field of organometallic catalysis has shifted towards research on Earth-abundant transition metals due to their ready availability, economic advantage, and novel properties. In this case, manganese, the third most abundant transition-metal in the Earth's crust, has emerged as one of the leading competitors. Accordingly, a large number of molecularly-defined Mn-complexes has been synthesized and employed for hydrogenation, dehydrogenation, and hydroelementation reactions. In this regard, catalyst design is based on three pillars, namely, metal-ligand bifunctionality, ligand hemilability, and redox activity. Indeed, the developed catalysts not only differ in the number of chelating atoms they possess but also their working principles, thereby leading to different turnover numbers for product molecules. Hence, the critical assessment of molecularly defined manganese catalysts in terms of chelating atoms, reaction conditions, mechanistic pathway, and product turnover number is significant. Herein, we analyze manganese complexes for their catalytic activity, versatility to allow multiple transformations and their routes to convert substrates to target molecules. This article will also be helpful to get significant insight into ligand design, thereby aiding catalysis design.
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Affiliation(s)
- Kuhali Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
| | - Satyadeep Waiba
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
| | - Akash Jana
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
| | - Biplab Maji
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, India.
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16
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Dalidovich T, Nallaparaju JV, Shalima T, Aav R, Kananovich DG. Mechanochemical Nucleophilic Substitution of Alcohols via Isouronium Intermediates. CHEMSUSCHEM 2022; 15:e202102286. [PMID: 34932893 PMCID: PMC9303792 DOI: 10.1002/cssc.202102286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/17/2021] [Indexed: 06/14/2023]
Abstract
An expansion of the solvent-free synthetic toolbox is essential for advances in the sustainable chemical industry. Mechanochemical reactions offer a superior safety profile and reduced amount of waste compared to conventional solvent-based synthesis. Herein a new mechanochemical method was developed for nucleophilic substitution of alcohols using fluoro-N,N,N',N'-tetramethylformamidinium hexafluorophosphate (TFFH) and K2 HPO4 as an alcohol-activating reagent and a base, respectively. Alcohol activation and reaction with a nucleophile were performed in one milling jar via reactive isouronium intermediates. Nucleophilic substitution with amines afforded alkylated amines in 31-91 % yields. The complete stereoinversion occurred for the SN 2 reaction of (R)- and (S)-ethyl lactates. Substitution with halide anions (F- , Br- , I- ) and oxygen-centered (CH3 OH, PhO- ) nucleophiles was also tested. Application of the method to the synthesis of active pharmaceutical ingredients has been demonstrated.
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Affiliation(s)
- Tatsiana Dalidovich
- Department of Chemistry and BiotechnologyTallinn University of TechnologyAkadeemia tee 1512618TallinnEstonia
| | - Jagadeesh Varma Nallaparaju
- Department of Chemistry and BiotechnologyTallinn University of TechnologyAkadeemia tee 1512618TallinnEstonia
| | - Tatsiana Shalima
- Department of Chemistry and BiotechnologyTallinn University of TechnologyAkadeemia tee 1512618TallinnEstonia
| | - Riina Aav
- Department of Chemistry and BiotechnologyTallinn University of TechnologyAkadeemia tee 1512618TallinnEstonia
| | - Dzmitry G. Kananovich
- Department of Chemistry and BiotechnologyTallinn University of TechnologyAkadeemia tee 1512618TallinnEstonia
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17
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Moutaoukil Z, Serrano-Díez E, Collado IG, Jiménez-Tenorio M, Botubol-Ares JM. N-Alkylation of organonitrogen compounds catalyzed by methylene-linked bis-NHC half-sandwich ruthenium complexes. Org Biomol Chem 2022; 20:831-839. [PMID: 35018948 DOI: 10.1039/d1ob02214h] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An efficient ruthenium-catalyzed N-alkylation of amines, amides and sulfonamides has been developed employing novel pentamethylcyclopentadienylruthenium(II) complexes bearing the methylene linked bis(NHC) ligand bis(3-methylimidazol-2-ylidene)methane. The acetonitrile complex 2 has proven particularly effective with a broad range of substrates with low catalyst loading (0.1-2.5 mol%) and high functional group tolerance under mild conditions. A total of 52 N-alkylated organonitrogen compounds including biologically relevant scaffolds were synthesized from (hetero)aromatic and aliphatic amines, amides and sulfonamides using alcohols or diols as alkylating agents in up to 99% isolated yield, even on gram-scale reactions. In the case of sulfonamides, it is the first example of N-alkylation employing a transition-metal complex bearing NHC ligands.
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Affiliation(s)
- Zakaria Moutaoukil
- University of Cadiz, Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Torre Sur, 4° planta, 11510, Puerto Real, Cádiz.
| | - Emmanuel Serrano-Díez
- University of Cadiz, Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Torre Sur, 4° planta, 11510, Puerto Real, Cádiz.
| | - Isidro G Collado
- University of Cadiz, Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Torre Sur, 4° planta, 11510, Puerto Real, Cádiz.
| | - Manuel Jiménez-Tenorio
- University of Cadiz, Departamento de Ciencias de los Materiales e Ingeniería Metalúrgica y Química Inorgánica-INBIO, Facultad de Ciencias, Torre Norte, 1° planta, 11510, Puerto Real, Cádiz, Spain
| | - José Manuel Botubol-Ares
- University of Cadiz, Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Torre Sur, 4° planta, 11510, Puerto Real, Cádiz.
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18
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Borthakur I, Sau A, Kundu S. Cobalt-catalyzed dehydrogenative functionalization of alcohols: Progress and future prospect. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214257] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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19
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Panigrahi D, Mondal M, Gupta R, Mani G. Four- and five-coordinate nickel(ii) complexes bearing new diphosphine–phosphonite and triphosphine–phosphite ligands: catalysts for N-alkylation of amines. RSC Adv 2022; 12:4510-4520. [PMID: 35425522 PMCID: PMC8981024 DOI: 10.1039/d1ra08961g] [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: 12/10/2021] [Accepted: 12/12/2021] [Indexed: 11/21/2022] Open
Abstract
A series of nickel(ii) complexes supported by the new tridentate P3 and tetradentate P4 ligands act efficiently as catalysts for the N-alkylation of primary amines with alcohols.
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Affiliation(s)
- Dipankar Panigrahi
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721 302, India
| | - Munmun Mondal
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721 302, India
| | - Rohit Gupta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721 302, India
| | - Ganesan Mani
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721 302, India
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20
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Chen TR, Chen YT, Chen YS, Lee WJ, Lin YH, Wang HC. Iridium/graphene nanostructured catalyst for the N-alkylation of amines to synthesize nitrogen-containing derivatives and heterocyclic compounds in a green process. RSC Adv 2022; 12:4760-4770. [PMID: 35425512 PMCID: PMC8981502 DOI: 10.1039/d1ra09052f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 01/20/2022] [Indexed: 12/15/2022] Open
Abstract
The unprecedented iridium/graphene nanostructured catalyst directly promotes the formation of C–N bonds without the need for pre-activation steps, solvents, alkalis and other additives.
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Affiliation(s)
- Tsun-Ren Chen
- Department of Applied Chemistry, National Ping Tung University, Pingtung City, Taiwan
| | - Yu-Tung Chen
- Department of Applied Chemistry, National Ping Tung University, Pingtung City, Taiwan
| | - Yi-Sheng Chen
- Department of Applied Chemistry, National Ping Tung University, Pingtung City, Taiwan
| | - Wen-Jen Lee
- Department of Applied Physics, National Ping Tung University, Pingtung City, Taiwan
| | - Yen-Hsing Lin
- Department of Applied Chemistry, National Ping Tung University, Pingtung City, Taiwan
| | - Hao-Chen Wang
- Department of Applied Chemistry, National Ping Tung University, Pingtung City, Taiwan
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21
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Ye Z, Yang Z, Yang C, Huang M, Xu X, Ke Z. Disarming the alkoxide trap to access a practical FeCl 3 system for borrowing-hydrogen N-alkylation. Org Chem Front 2022. [DOI: 10.1039/d2qo00825d] [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
Disarming the alkoxide trap using an in situ reduction strategy to access a practical FeCl3 and N-heterocyclic carbene system for borrowing-hydrogen N-alkylation.
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Affiliation(s)
- Zongren Ye
- School of Materials Science & Engineering, School of Chemistry, PCFM Lab, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Zhenjie Yang
- School of Materials Science & Engineering, School of Chemistry, PCFM Lab, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Chenhui Yang
- School of Materials Science & Engineering, School of Chemistry, PCFM Lab, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Ming Huang
- School of Materials Science & Engineering, School of Chemistry, PCFM Lab, Sun Yat-sen University, Guangzhou 510006, P. R. China
- School of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, P. R. China
| | - Xianfang Xu
- School of Materials Science & Engineering, School of Chemistry, PCFM Lab, Sun Yat-sen University, Guangzhou 510006, P. R. China
| | - Zhuofeng Ke
- School of Materials Science & Engineering, School of Chemistry, PCFM Lab, Sun Yat-sen University, Guangzhou 510006, P. R. China
- Guangdong Provincial Key Laboratory of Optical Chemicals, XinHuaYue Group, Maoming, 525000, P.R. China
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22
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Chang S, Liu H, Shi G, Xia XF, Wang D, Duan ZC. Copper–cobalt coordination polymers and catalytic applications on borrowing hydrogen reactions. NEW J CHEM 2022. [DOI: 10.1039/d2nj01763f] [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 porous copper–cobalt polymer was synthesized and achieved applications for the N-alkylation of sulfonamides with alcohols, and carboxamides with alcohols.
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Affiliation(s)
- Shaoze Chang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Hongqiang Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
- China Synchem Technology Co., Ltd., Bengbu, Anhui, 233000, China
| | - Gang Shi
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Xiao-Feng Xia
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Dawei Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Zheng-Chao Duan
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
- School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi 445000, China
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23
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Karroum H, Chenakin S, Alekseev S, Iablokov V, Xiang Y, Dubois V, Kruse N. Terminal Amines, Nitriles, and Olefins through Catalytic CO Hydrogenation in the Presence of Ammonia. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hafsa Karroum
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Wegner Hall 155, P.O. Box 646515, Pullman, Washington 99164-6515, United States
| | - Sergey Chenakin
- G.V. Kurdyumov Institute for Metal Physics of the N.A.S. of Ukraine, 36 Akad. Vernadsky Blvd., Kyiv 03142, Ukraine
| | - Sergei Alekseev
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Wegner Hall 155, P.O. Box 646515, Pullman, Washington 99164-6515, United States
- Taras Shevchenko National University of Kyiv, 64 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Viacheslav Iablokov
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Wegner Hall 155, P.O. Box 646515, Pullman, Washington 99164-6515, United States
| | - Yizhi Xiang
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Vincent Dubois
- Physical Chemistry and Catalysis, Labiris, Avenue Emile Gryzon 1, Brussels 1070, Belgium
| | - Norbert Kruse
- Voiland School of Chemical Engineering and Bioengineering, Washington State University, Wegner Hall 155, P.O. Box 646515, Pullman, Washington 99164-6515, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99332, United States
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24
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Bohigues B, Rojas-Buzo S, Moliner M, Corma A. Coordinatively Unsaturated Hf-MOF-808 Prepared via Hydrothermal Synthesis as a Bifunctional Catalyst for the Tandem N-Alkylation of Amines with Benzyl Alcohol. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2021; 9:15793-15806. [PMID: 35663357 PMCID: PMC9153058 DOI: 10.1021/acssuschemeng.1c04903] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 10/27/2021] [Indexed: 05/07/2023]
Abstract
The modulated hydrothermal (MHT) synthesis of an active and selective Hf-MOF-808 material for the N-alkylation reaction of aniline with benzyl alcohol under base-free mild reaction conditions is reported. Through kinetic experiments and isotopically labeled NMR spectroscopy studies, we have demonstrated that the reaction mechanism occurs via borrowing hydrogen (BH) pathway, in which the alcohol dehydrogenation is the limiting step. The high concentration of defective -OH groups generated on the metallic nodes through MHT synthesis enhances the alcohol activation, while the unsaturated Hf4+, which acts as a Lewis acid site, is able to borrow the hydrogen from the methylene position of benzyl alcohol. This fact makes this material at least 14 times more active for the N-alkylation reaction than the material obtained via solvothermal synthesis. The methodology described in this work could be applied to a wide range of aniline and benzyl alcohol derivates, showing in all cases high selectivity toward the corresponding N-benzylaniline product. Finally, Hf-MOF-808, which acts as a true heterogeneous catalyst, can be reused in at least four consecutive runs without any activity loss.
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25
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Switching between borrowing hydrogen and acceptorless dehydrogenative coupling by base transition-metal catalysts. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Panigrahi UK, Bhat VT, Ramakrishnan VKM. Magnetically Recyclable Heterogeneous Cobalt Ferrite Catalyst for the Direct N‐Alkylation of (Hetero)aryl Amines with Alcohols. ChemistrySelect 2021. [DOI: 10.1002/slct.202100510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Uttam Kumar Panigrahi
- Department of chemistry College of Engineering and Technology Faculty of Engineering and Technology SRM Institute of Science and Technology SRM Nagar, Kattankulathur 603203, Kanchipuram Chennai Tamil Nadu India
| | - Venugopal T. Bhat
- Department of chemistry College of Engineering and Technology Faculty of Engineering and Technology SRM Institute of Science and Technology SRM Nagar, Kattankulathur 603203, Kanchipuram Chennai Tamil Nadu India
| | - Vengadesh Kumara Mangalam Ramakrishnan
- Department of chemistry College of Engineering and Technology Faculty of Engineering and Technology SRM Institute of Science and Technology SRM Nagar, Kattankulathur 603203, Kanchipuram Chennai Tamil Nadu India
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27
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Feng X, Huang M. Effect of the ancillary ligand in N-heterocyclic carbene iridium(III) catalyzed N-alkylation of amines with alcohols. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115289] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Li W, Huang M, Liu J, Huang YL, Lan XB, Ye Z, Zhao C, Liu Y, Ke Z. Enhanced Hydride Donation Achieved Molybdenum Catalyzed Direct N-Alkylation of Anilines or Nitroarenes with Alcohols: From Computational Design to Experiment. ACS Catal 2021; 11:10377-10382. [DOI: 10.1021/acscatal.1c02956] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Weikang Li
- School of Materials Science & Engineering, School of Chemistry, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Ming Huang
- Department School of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, P. R. China
| | - Jiahao Liu
- School of Materials Science & Engineering, School of Chemistry, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Yong-Liang Huang
- Department of Chemistry, Shantou University Medical College, Shantou, Guangdong 515041, P. R. China
| | - Xiao-Bing Lan
- School of Materials Science & Engineering, School of Chemistry, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Zongren Ye
- School of Materials Science & Engineering, School of Chemistry, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Cunyuan Zhao
- School of Materials Science & Engineering, School of Chemistry, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Yan Liu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China
| | - Zhuofeng Ke
- School of Materials Science & Engineering, School of Chemistry, PCFM Lab, Sun Yat-sen University, Guangzhou 510275, P. R. China
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29
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Zhang MJ, Ge XL, Young DJ, Li HX. Recent advances in Co-catalyzed C–C and C–N bond formation via ADC and ATH reactions. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132309] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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Singh A, Maji A, Joshi M, Choudhury AR, Ghosh K. Designed pincer ligand supported Co(II)-based catalysts for dehydrogenative activation of alcohols: Studies on N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines. Dalton Trans 2021; 50:8567-8587. [PMID: 34075925 DOI: 10.1039/d0dt03748f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Base-metal catalysts Co1, Co2 and Co3 were synthesized from designed pincer ligands L1, L2 and L3 having NNN donor atoms respectively. Co1, Co2 and Co3 were characterized by IR, UV-Vis. and ESI-MS spectroscopic studies. Single crystal X-ray diffraction studies were investigated to authenticate the molecular structures of Co1 and Co3. Catalysts Co1, Co2 and Co3 were utilized to study the dehydrogenative activation of alcohols for N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines. Under optimized reaction conditions, a broad range of substrates including alcohols, anilines and ketones were exploited. A series of control experiments for N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines were examined to understand the reaction pathway. ESI-MS spectral studies were investigated to characterize cobalt-alkoxide and cobalt-hydride intermediates. Reduction of styrene by evolved hydrogen gas during the reaction was investigated to authenticate the dehydrogenative nature of the catalysts. Probable reaction pathways were proposed for N-alkylation of amines, α-alkylation of ketones and synthesis of quinolines on the basis of control experiments and detection of reaction intermediates.
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Affiliation(s)
- Anshu Singh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee-247667, Uttarakhand, India.
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31
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Pandey B, Xu S, Ding K. Switchable β-alkylation of Secondary Alcohols with Primary Alcohols by a Well-Defined Cobalt Catalyst. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00147] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bedraj Pandey
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Shi Xu
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Keying Ding
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
- Molecular Biosciences Program, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
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32
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Khodamorady M, Ghobadi N, Bahrami K. Homoselective synthesis of 5‐substituted 1
H
‐tetrazoles and one‐pot synthesis of 2,4,5‐trisubstuted imidazole compounds using BNPs@SiO
2
‐TPPTSA as a stable and new reusable nanocatalyst. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6144] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Minoo Khodamorady
- Department of Organic Chemistry, Faculty of Chemistry Razi University Kermanshah Iran
| | - Nazanin Ghobadi
- Department of Chemistry, School of Science Alzahra University Tehran Iran
- Department of Chemistry and Biochemistry Ohio University Athens OH USA
| | - Kiumars Bahrami
- Department of Organic Chemistry, Faculty of Chemistry Razi University Kermanshah Iran
- Nanoscience and Nanotechnology Research Center (NNRC) Razi University Kermanshah Iran
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33
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Balaji S, Balamurugan G, Ramesh R, Semeril D. Palladium(II) N^O Chelating Complexes Catalyzed One-Pot Approach for Synthesis of Quinazolin-4(3H)-ones via Acceptorless Dehydrogenative Coupling of Benzyl Alcohols and 2-Aminobenzamide. Organometallics 2021. [DOI: 10.1021/acs.organomet.0c00814] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Sundarraman Balaji
- Centre for Organometallic Chemistry, School of Chemistry, Bharathidasan University, Tiruchirappalli, 620 024, India
| | - Gunasekaran Balamurugan
- Centre for Organometallic Chemistry, School of Chemistry, Bharathidasan University, Tiruchirappalli, 620 024, India
| | - Rengan Ramesh
- Centre for Organometallic Chemistry, School of Chemistry, Bharathidasan University, Tiruchirappalli, 620 024, India
| | - David Semeril
- Laboratoire de Chimie Inorganique et Catalyse, Institut de Chimie, Universite de Strasbourg, UMR 7177, CNRS, Strasbourg, 67070, France
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34
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Wu D, Bu Q, Guo C, Dai B, Liu N. Cooperative catalysis of molybdenum with organocatalysts for distribution of products between amines and imines. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111415] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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36
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Lan XB, Ye Z, Yang C, Li W, Liu J, Huang M, Liu Y, Ke Z. Tungsten-Catalyzed Direct N-Alkylation of Anilines with Alcohols. CHEMSUSCHEM 2021; 14:860-865. [PMID: 33350585 DOI: 10.1002/cssc.202002830] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Indexed: 06/12/2023]
Abstract
The implementation of non-noble metals mediated chemistry is a major goal in homogeneous catalysis. Borrowing hydrogen/hydrogen autotransfer (BH/HA) reaction, as a straightforward and sustainable synthetic method, has attracted considerable attention in the development of non-noble metal catalysts. Herein, we report a tungsten-catalyzed N-alkylation reaction of anilines with primary alcohols via BH/HA. This phosphine-free W(phen)(CO)4 (phen=1,10-phenthroline) system was demonstrated as a practical and easily accessible in-situ catalysis for a broad range of amines and alcohols (up to 49 examples, including 16 previously undisclosed products). Notably, this tungsten system can tolerate numerous functional groups, especially the challenging substrates with sterically hindered substituents, or heteroatoms. Mechanistic insights based on experimental and computational studies are also provided.
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Affiliation(s)
- Xiao-Bing Lan
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
- Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds Research and Application School of Chemistry & Biology and Environmental Engineering, Xiangnan University, Chenzhou, Hunan Province, 423000, P. R. China
| | - Zongren Ye
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Chenhui Yang
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Weikang Li
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Jiahao Liu
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Ming Huang
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Yan Liu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, P. R. China
| | - Zhuofeng Ke
- School of Materials Science & Engineering, PCFM Lab, Sun Yat-sen University, Guangzhou, 510275, P. R. China
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37
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Chen H, Wang Q, Liu T, Chen H, Zhou D, Qu F. Iron-catalyzed N-alkylation of aromatic amines via borrowing hydrogen strategy. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1881066] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Hui Chen
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou, P. R. China
| | - Qingfu Wang
- Technology Center, China Tobacco Henan Industrial Co., Ltd, Zhengzhou, P. R. China
| | - Tingting Liu
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou, P. R. China
| | - Haitao Chen
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou, P. R. China
| | - Duo Zhou
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou, P. R. China
| | - Fengbo Qu
- Institute of Chemistry, Henan Academy of Sciences, Zhengzhou, P. R. China
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38
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Wei D, Yang P, Yu C, Zhao F, Wang Y, Peng Z. N-Alkylation of Amines with Alcohols Catalyzed by Manganese(II) Chloride or Bromopentacarbonylmanganese(I). J Org Chem 2021; 86:2254-2263. [PMID: 33494595 DOI: 10.1021/acs.joc.0c02407] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A manganese-catalyzed N-alkylation reaction of amines with alcohols via hydrogen autotransfer strategy has been demonstrated. The developed practical catalytic system including an inexpensive, nontoxic, commercially available MnCl2 or MnBr(CO)5 as the metal salt and triphenylphosphine as a ligand provides access to diverse aromatic, heteroaromatic, and aliphatic secondary amines in moderate-to-high yields. In addition, this operationally simple protocol is scalable to the gram level and suitable for synthesizing heterocycles such as indole and resveratrol-derived amines known to be active for Alzheimer's disease.
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Affiliation(s)
- Dongyue Wei
- Department of Chemistry, College of Science, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Peng Yang
- Department of Chemistry, College of Science, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Chuanman Yu
- Department of Chemistry, College of Science, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Fengkai Zhao
- Department of Chemistry, College of Science, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Yilei Wang
- Department of Chemistry, College of Science, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Zhihua Peng
- Department of Chemistry, College of Science, China University of Petroleum (East China), Qingdao, Shandong 266580, China
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39
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Paudel K, Xu S, Hietsoi O, Pandey B, Onuh C, Ding K. Switchable Imine and Amine Synthesis Catalyzed by a Well-Defined Cobalt Complex. Organometallics 2021. [DOI: 10.1021/acs.organomet.0c00727] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keshav Paudel
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
- Molecular Biosciences Program, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Shi Xu
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Oleksandr Hietsoi
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Bedraj Pandey
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Chuka Onuh
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
| | - Keying Ding
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
- Molecular Biosciences Program, Middle Tennessee State University, Murfreesboro, Tennessee 37132, United States
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40
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Guérin V, Legault CY. Synthesis of NHC-Iridium(III) Complexes Based on N-Iminoimidazolium Ylides and Their Use for the Amine Alkylation by Borrowing Hydrogen Catalysis. Organometallics 2021. [DOI: 10.1021/acs.organomet.0c00726] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Vincent Guérin
- University of Sherbrooke, Department of Chemistry, Centre in Green Chemistry and Catalysis,2500 boul. de l’Université, Sherbrooke, Québec J1K 2R1, Canada
| | - Claude Y. Legault
- University of Sherbrooke, Department of Chemistry, Centre in Green Chemistry and Catalysis,2500 boul. de l’Université, Sherbrooke, Québec J1K 2R1, Canada
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41
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Huang M, Li Y, Lan XB, Liu J, Zhao C, Liu Y, Ke Z. Ruthenium(II) complexes with N-heterocyclic carbene-phosphine ligands for the N-alkylation of amines with alcohols. Org Biomol Chem 2021; 19:3451-3461. [PMID: 33899900 DOI: 10.1039/d1ob00362c] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal hydride complexes are key intermediates for N-alkylation of amines with alcohols by the borrowing hydrogen/hydrogen autotransfer (BH/HA) strategy. Reactivity tuning of metal hydride complexes could adjust the dehydrogenation of alcohols and the hydrogenation of imines. Herein we report ruthenium(ii) complexes with hetero-bidentate N-heterocyclic carbene (NHC)-phosphine ligands, which realize smart pathway selection in the N-alkylated reaction via reactivity tuning of [Ru-H] species by hetero-bidentate ligands. In particular, complex 6cb with a phenyl wingtip group and BArF- counter anion, is shown to be one of the most efficient pre-catalysts for this transformation (temperature is as low as 70 °C, neat conditions and catalyst loading is as low as 0.25 mol%). A large variety of (hetero)aromatic amines and primary alcohols were efficiently converted into mono-N-alkylated amines in good to excellent isolated yields. Notably, aliphatic amines, challenging methanol and diamines could also be transformed into the desired products. Detailed control experiments and density functional theory (DFT) calculations provide insights to understand the mechanism and the smart pathway selection via [Ru-H] species in this process.
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Affiliation(s)
- Ming Huang
- Clinical Pharmacy of The First Affiliated Hospital, School of clinical pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, P. R. China. and School of Materials Science & Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China.
| | - Yinwu Li
- School of Materials Science & Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China.
| | - Xiao-Bing Lan
- School of Materials Science & Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China.
| | - Jiahao Liu
- School of Materials Science & Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China.
| | - Cunyuan Zhao
- School of Materials Science & Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China.
| | - Yan Liu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China.
| | - Zhuofeng Ke
- School of Materials Science & Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China.
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42
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Prabha D, Pachisia S, Gupta R. Cobalt mediated N-alkylation of amines by alcohols: role of hydrogen bonding pocket. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01374a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Cobalt complexes of amide-based pincers provide a H-bonding pocket that binds a reagent in the vicinity of the metal center. These complexes function as catalysts for the N-alkylation of amines using alcohols via a borrowing hydrogen strategy.
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Affiliation(s)
- Divya Prabha
- Department of Chemistry
- University of Delhi
- Delhi – 110 007
- India
| | - Sanya Pachisia
- Department of Chemistry
- University of Delhi
- Delhi – 110 007
- India
| | - Rajeev Gupta
- Department of Chemistry
- University of Delhi
- Delhi – 110 007
- India
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43
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Goyal V, Sarki N, Poddar MK, Narani A, Tripathi D, Ray A, Natte K. Biorenewable carbon-supported Ru catalyst for N-alkylation of amines with alcohols and selective hydrogenation of nitroarenes. NEW J CHEM 2021. [DOI: 10.1039/d1nj01654g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A renewable carbon-supported Ru catalyst (Ru/PNC-700) facilely prepared via simple impregnation followed by the pyrolysis process for N-alkylation of anilines with benzyl alcohol and chemoselective hydrogenation of nitroarenes.
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Affiliation(s)
- Vishakha Goyal
- Chemical and Material Sciences Division
- Light Stock Processing Division
- Biofuels Division
- Analytical Sciences Division
- CSIR–Indian Institute of Petroleum
| | - Naina Sarki
- Chemical and Material Sciences Division
- Light Stock Processing Division
- Biofuels Division
- Analytical Sciences Division
- CSIR–Indian Institute of Petroleum
| | - Mukesh Kumar Poddar
- Chemical and Material Sciences Division
- Light Stock Processing Division
- Biofuels Division
- Analytical Sciences Division
- CSIR–Indian Institute of Petroleum
| | - Anand Narani
- Chemical and Material Sciences Division
- Light Stock Processing Division
- Biofuels Division
- Analytical Sciences Division
- CSIR–Indian Institute of Petroleum
| | - Deependra Tripathi
- Chemical and Material Sciences Division
- Light Stock Processing Division
- Biofuels Division
- Analytical Sciences Division
- CSIR–Indian Institute of Petroleum
| | - Anjan Ray
- Chemical and Material Sciences Division
- Light Stock Processing Division
- Biofuels Division
- Analytical Sciences Division
- CSIR–Indian Institute of Petroleum
| | - Kishore Natte
- Chemical and Material Sciences Division
- Light Stock Processing Division
- Biofuels Division
- Analytical Sciences Division
- CSIR–Indian Institute of Petroleum
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44
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Bidentate geometry-constrained iminopyridyl nickel-catalyzed synthesis of amines or imines via borrowing hydrogen or dehydrogenative condensation. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152604] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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45
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Murugan K, Vijayapritha S, Viswanathamurthi P, Saravanan K, Vijayan P, Ojwach SO. Ru(II) complexes containing (2-(pyren-1-ylmethylene)hydrazinyl)benzothiazole: Synthesis, solid-state structure, computational study and catalysis in N-alkylation reactions. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119864] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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46
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Nasresfahani Z, Kassaee MZ. Nickel−Copper bimetallic mesoporous nanoparticles: As an efficient heterogeneous catalyst for
N
‐alkylation of amines with alcohols. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.6032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Zahra Nasresfahani
- Department of Chemistry Tarbiat Modares University Tehran PO Box 14155‐175 Iran
| | - Mohamad Z. Kassaee
- Department of Chemistry Tarbiat Modares University Tehran PO Box 14155‐175 Iran
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47
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Luo N, Zhong Y, Wen H, Luo R. Cyclometalated Iridium Complex-Catalyzed N-Alkylation of Amines with Alcohols via Borrowing Hydrogen in Aqueous Media. ACS OMEGA 2020; 5:27723-27732. [PMID: 33134736 PMCID: PMC7594325 DOI: 10.1021/acsomega.0c04192] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 09/28/2020] [Indexed: 05/06/2023]
Abstract
This paper develops a methodology for cyclometalated iridium complex-catalyzed N-alkylation of amines with alcohols via borrowing hydrogen in the aqueous phase. The cyclometalated iridium catalyst-mediated N-alkylation of amines with alcohols displays high activity (S/C up to 10,000 and yield up to 96%) and ratio of amine/imine (up to >99:1) in a broad range of substrates (up to 46 examples) using water as the green and eco-friendly solvent. Most importantly, this transformation is simple, efficient, and can be performed at a gram scale, showcasing its potential for industrially synthesizing N-alkylamine compounds.
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48
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Abstract
An important strategy for the efficient generation of diversity in molecular structures is the utilization of common starting materials in chemodivergent transformations. The most studied solutions for switching the chemoselectivity rely on the catalyst, ligand, additive, solvent, temperature, time, pressure, pH and even small modifications in the substrate. In this review article several processes have been selected such as inter- and intramolecular cyclizations, including carba-, oxa-, thia- and oxazacyclizations promoted mainly by Brønsted or Lewis acids, transition metals and organocatalysts, as well as radical reactions. Catalyst-controlled intra- and intermolecular cyclizations are mainly described to give five- and six-membered rings. Cycloaddition reactions involving (2+2), (3+2), (3+3), (4+1), (4+2), (5+2), (6+2) and (7+2) processes are useful reactions for the synthesis of cyclic systems using organocatalysts, metal catalysts and Lewis acid-controlled processes. Addition reactions mainly of carba- and heteronucleophiles to unsaturated conjugated substrates can give different adducts via metal catalyst-, Lewis acid- and solvent-dependent processes. Carbonylation reactions of amines and phenols are carried out via ligand-controlled transition metal-catalyzed multicomponent processes. Ring-opening reactions starting mainly from cyclopropanols, cyclopropenols and epoxides or aziridines are applied to the synthesis of acyclic versus cyclic products under catalyst-control mainly by Lewis acids. Chemodivergent reduction reactions are performed using dissolving metals, sodium borohydride or hydrogen transfer conditions under solvent control. Oxidation reactions include molecular oxygen under solvent control or using different dioxiranes, as well as chemodivergent palladium catalyzed cross-coupling reactions using boronic acids are applied to aromatic and allenic compounds. Other chemodivergent reactions such as alkylations and allylations under transition metal catalysis, dimerization of acetylenes, bromination of benzylic substrates, and A3-couplings are performed via catalyst- or reaction condition-dependent processes.
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Affiliation(s)
- Irina P Beletskaya
- Chemistry Department, M. V. Lomonosov Moscow University, Leminskie Gory 1, 119992 Moscow, Russia
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49
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Sankar V, Kathiresan M, Sivakumar B, Mannathan S. Zinc‐Catalyzed N‐Alkylation of Aromatic Amines with Alcohols: A Ligand‐Free Approach. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000499] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Velayudham Sankar
- Department of Chemistry SRM Institute of Science and Technology Kattankulathur Chennai 603203 India
| | - Murugavel Kathiresan
- Electro Organic Division CSIR – Central Electrochemical Research Institute Karaikudi 630003 Tamilnadu India
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50
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Kallmeier F, Fertig R, Irrgang T, Kempe R. Chromium-Catalyzed Alkylation of Amines by Alcohols. Angew Chem Int Ed Engl 2020; 59:11789-11793. [PMID: 32187785 PMCID: PMC7384194 DOI: 10.1002/anie.202001704] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Indexed: 11/30/2022]
Abstract
The alkylation of amines by alcohols is a broadly applicable, sustainable, and selective method for the synthesis of alkyl amines, which are important bulk and fine chemicals, pharmaceuticals, and agrochemicals. We show that Cr complexes can catalyze this C-N bond formation reaction. We synthesized and isolated 35 examples of alkylated amines, including 13 previously undisclosed products, and the use of amino alcohols as alkylating agents was demonstrated. The catalyst tolerates numerous functional groups, including hydrogenation-sensitive examples. Compared to many other alcohol-based amine alkylation methods, where a stoichiometric amount of base is required, our Cr-based catalyst system gives yields higher than 90 % for various alkyl amines with a catalytic amount of base. Our study indicates that Cr complexes can catalyze borrowing hydrogen or hydrogen autotransfer reactions and could thus be an alternative to Fe, Co, and Mn, or noble metals in (de)hydrogenation catalysis.
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Affiliation(s)
- Fabian Kallmeier
- Inorganic Chemistry II—Catalyst DesignUniversity of Bayreuth95440BayreuthGermany
| | - Robin Fertig
- Inorganic Chemistry II—Catalyst DesignUniversity of Bayreuth95440BayreuthGermany
| | - Torsten Irrgang
- Inorganic Chemistry II—Catalyst DesignUniversity of Bayreuth95440BayreuthGermany
| | - Rhett Kempe
- Inorganic Chemistry II—Catalyst DesignUniversity of Bayreuth95440BayreuthGermany
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