1
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Shambhavi CN, Jeganmohan M. Synthesis of 1 H-Isoindoles via Ruthenium(II)-Catalyzed Cyclization of Benzimidates with Alkenes. J Org Chem 2024; 89:9896-9909. [PMID: 38916456 DOI: 10.1021/acs.joc.4c00688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
A Ru(II)-catalyzed efficient synthesis of 1H-isoindoles via the cyclization of benzimidates with alkenes has been demonstrated. This methodology exhibits high compatibility with various functionalized activated and unactivated olefins containing different sensitive functional groups. This protocol provides an effective method for synthesizing various 1H-isoindole derivatives in decent to excellent yields. Notably, the ortho-alkenylation of benzimidates with unactivated alkenes was achieved. A potential reaction mechanism has been suggested that involves C-H activation, 1,2 insertion, and β-hydride elimination subsequent to aza-Michael addition.
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Affiliation(s)
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600036, India
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2
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Ojea V, Ruiz M. DLPNO-CCSD(T) and DFT study of the acetate-assisted C-H activation of benzaldimine at [RuCl 2( p-cymene)] 2: the relevance of ligand exchange processes at ruthenium(II) complexes in polar protic media. Dalton Trans 2024; 53:8662-8679. [PMID: 38695752 DOI: 10.1039/d4dt00380b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
To gain mechanistic insights into the acetate-assisted cyclometallations of arylimines promoted by [RuCl2(p-cymene)]2 in polar protic media, DFT geometry optimizations (with M06 and ωB97X-D3 functionals and the cc-pVDZ-PP[Ru] basis set) followed by DLPNO-CCSD(T)/CBS energy evaluations were performed using benzaldimine as a model substrate and methanol as the solvent (with CPCM or SMD models). The calculation results show that coordination of the imine to an acetate ruthenium precursor is followed by anion (chloride or acetate) dissociation as the rate-determining step of the process. H-Bonding of two explicit MeOH to the anion reduces the calculated activation energy to ca. 23 kcal mol-1, in good agreement with the experimental half-life at room temperature. Subsequent AMLA/CMD C-H activation of the intermediate cationic complexes is a faster, reversible process. Alternative reaction pathways involving neutral diacetate ruthenium complexes offer AMLA/CMD transition state structures of lower energy but are precluded due to higher energy barriers for the initial ligand exchange processes at ruthenium. Solvent assistance accelerates the final chloride/acetate exchange processes on the cycloruthenate intermediates, particularly when compression in the condensed phase is taken into consideration. The performance of six DFT functionals (with the aug-pVTZ-PP[Ru] basis set) was assessed using the DLPNO-CCSD(T)/CBS reference energies. Neutral diacetate ruthenium complexes were incorrectly predicted as being kinetically relevant when using hybrid DFT methods (PBE0-D3(BJ), M06-2X or ωB97M-V). Good agreement between the calculated barrier heights and our benchmark energy results was obtained by using double-hybrid DFT methods. PWPB95 with D3(BJ) or D4 dispersion energy corrections was found to be the most accurate (ΔG≠ MUE of ca. 1 kcal mol-1). This study may aid our understanding of and help with further experimental investigations of synthetically useful carboxylate-assisted C-H bond functionalizations involving (N,C)-cyclometallated (p-cymene)Ru(II) intermediate complexes in sustainable polar protic solvents.
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Affiliation(s)
- Vicente Ojea
- Departamento de Química, Facultade de Ciencias, Universidade da Coruña, E-15078 A Coruña, Spain.
| | - María Ruiz
- Departamento de Química, Facultade de Ciencias, Universidade da Coruña, E-15078 A Coruña, Spain.
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3
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Guo M, Wu X, Wu H, Sun X. Ligand effect on Ru-centered species toward methane activation. Phys Chem Chem Phys 2024; 26:14329-14335. [PMID: 38695750 DOI: 10.1039/d4cp01420k] [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
Ligands have been known to profoundly affect the chemical transformations of methane, yet significant challenges remain in shedding light on the underlying mechanisms. Here, we demonstrate that the conversion of methane can be regulated by Ru centered cations with a series of ligands (C, CH, CNH, CHCNH). Gas-phase experiments complemented by theoretical dynamic analysis were performed to explore the essences and principles governing the ligand effect. In contrast to the inert Ru+, [RuC]+, and [RuCNH]+ toward CH4, the dehydrogenation dominates the reaction of ligand-regulated systems [RuCH]+/CH4 and [RuCHCNH]+/CH4. In active cases, CH acts as active sites, and regulates the activation of CH4 assisted by the "seemingly inert" CNH ligand.
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Affiliation(s)
- Mengdi Guo
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.
- Shandong Energy Institute, Qingdao 266101, P. R. China
| | - Xiaonan Wu
- East China Normal University, Shanghai 200241, P. R. China.
| | - Hechen Wu
- Fudan University, Shanghai 200240, P. R. China
| | - Xiaoyan Sun
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.
- Shandong Energy Institute, Qingdao 266101, P. R. China
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4
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Getreuer P, Marretta L, Toyoglu E, Dömötör O, Hejl M, Prado-Roller A, Cseh K, Legin AA, Jakupec MA, Barone G, Terenzi A, Keppler BK, Kandioller W. Investigating the anticancer potential of 4-phenylthiazole derived Ru(II) and Os(II) metalacycles. Dalton Trans 2024; 53:5567-5579. [PMID: 38426897 DOI: 10.1039/d4dt00245h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
In this contribution we report the synthesis, characterization and in vitro anticancer activity of novel cyclometalated 4-phenylthiazole-derived ruthenium(II) (2a-e) and osmium(II) (3a-e) complexes. Formation and sufficient purity of the complexes were unambigiously confirmed by 1H-, 13C- and 2D-NMR techniques, X-ray diffractometry, HRMS and elemental analysis. The binding preferences of these cyclometalates to selected amino acids and to DNA models including G-quadruplex structures were analyzed. Additionally, their stability and behaviour in aqueous solutions was determined by UV-Vis spectroscopy. Their cellular accumulation, their ability of inducing apoptosis, as well as their interference in the cell cycle were studied in SW480 colon cancer cells. The anticancer potencies were investigated in three human cancer cell lines and revealed IC50 values in the low micromolar range, in contrast to the biologically inactive ligands.
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Affiliation(s)
- Paul Getreuer
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria.
- Vienna Doctoral School in Chemistry (DoSChem), Faculty of Chemistry, University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria
| | - Laura Marretta
- STEBICEF-Department, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy
| | - Emine Toyoglu
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria.
| | - Orsolya Dömötör
- Department of Molecular and Analytical Chemistry, University of Szeged, Dóm tér 7-8, 6720 Szeged, Hungary
| | - Michaela Hejl
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria.
| | - Alexander Prado-Roller
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria.
| | - Klaudia Cseh
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria.
| | - Anton A Legin
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria.
| | - Michael A Jakupec
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria.
- Research Cluster "Translational Cancer Therapy Research", University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria
| | - Giampaolo Barone
- STEBICEF-Department, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy
| | - Alessio Terenzi
- STEBICEF-Department, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria.
- Research Cluster "Translational Cancer Therapy Research", University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria
| | - Wolfgang Kandioller
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria.
- Research Cluster "Translational Cancer Therapy Research", University of Vienna, Waehringer Straße 42, 1090 Vienna, Austria
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5
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Lu D, Wu K, Wen TB, Hao W, Zhang HJ. Unusual Kinetics Induced by Ligands in Rhodium(III)-Catalyzed Dehydrogenative Olefination Reactions. J Org Chem 2023. [PMID: 37987772 DOI: 10.1021/acs.joc.3c01300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
In this study, we investigate the effects of ligands on C-H activation during rhodium(III)-catalyzed C-H bond olefination reactions using well-defined [CpXRhIII] catalytic systems with three representative CpX (Cp (η5-C5H5), CpCF3 (η5-C5Me4CF3), and Cp* (η5-C5Me5)) ligands. Our results demonstrate that C-H activation as the rate-limiting step is significantly influenced by the steric properties of the CpX ligands. Moreover, we observe a dramatic acceleration of the simple [CpRhIII]-catalyzed C-H olefination reaction with acid coproducts such as HOAc, implying an autocatalytic C-H activation process.
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Affiliation(s)
- Dandan Lu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 Fujian, P. R. China
| | - Kongchuan Wu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 Fujian, P. R. China
| | - Ting-Bin Wen
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 Fujian, P. R. China
| | - Wei Hao
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Hui-Jun Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 Fujian, P. R. China
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6
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Binnani C, Arora S, Priya B, Gupta P, Singh SK. 2-Hydroxypyridine-based Ligands as Promoter in Ruthenium(II) Catalyzed C-H Bond Activation/Arylation Reactions. Chem Asian J 2023; 18:e202300569. [PMID: 37811781 DOI: 10.1002/asia.202300569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/14/2023] [Accepted: 10/09/2023] [Indexed: 10/10/2023]
Abstract
A class of 2-hydroxypyridine based ligands are explored to achieve enhanced catalytic activity for ortho-C-H bond activation/arylation reaction over [(η6 -p-cymene)RuCl2 ]2 catalyst in water. Extensive studies using a series of substituted 2-hydroxypyridine based ligands (L1-L6) inferred that 5-trifluoromethyl-2-hydroxypyridine (L6) exhibited favorable effects to enhance the catalytic activity of Ru(II) catalyst for ortho C-H bond arylation of 2-phenylpyridine by 8 folds compared to those performed without ligands. The (η6 -p-cymene)Ru - L6 system also exhibited enhanced catalytic activity for ortho C-H bond arylation of 2-phenylpyridine using a variety of aryl halides. NMR and mass investigations inferred the presence of several ligand coordinated Ru(II) species, suggesting the involvement of these species in C-H bond activation reaction. Further in concurrence with the experimental findings, the density functional theory (DFT) calculations also evidenced the prominent role of 2-hydroxypyridine based ligands in Ru(II) catalyzed C-H bond arylation of 2-phenylpyridine with lower energy barrier for the C-H activation step.
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Affiliation(s)
- Chinky Binnani
- Catalysis Group, Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, Madhya Pradesh, India
| | - Sumangla Arora
- Computational Catalysis Center, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Bhanu Priya
- Catalysis Group, Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, Madhya Pradesh, India
| | - Puneet Gupta
- Computational Catalysis Center, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Sanjay K Singh
- Catalysis Group, Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, Madhya Pradesh, India
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7
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Kumar S, Singh AK. Micro-photo-flow reactor system for fused N-heteroaryl scaffold synthesis and late-stage functionalization of pyrazolopyridines. Chem Commun (Camb) 2022; 58:11268-11271. [PMID: 36112131 DOI: 10.1039/d2cc03713k] [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
Late-stage functionalization (LSF) of active pharmaceutical ingredients can provide a straightforward approach to efficient de novo design and synthesis of drug molecules for structural activity relationship studies (SARS). Herein, we have developed a visible-light-driven modular micro-flow reactor consisting of an integrated post-synthetic work-up that was designed and developed to synthesize a fused N-heteroaryl scaffold and late-stage functionalization of pyrazolopyridines without using any expensive oxidant or additional photo-catalyst (PC).
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Affiliation(s)
- Sanjeev Kumar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Ajay K Singh
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
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8
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Hafeez J, Bilal M, Rasool N, Hafeez U, Adnan Ali Shah S, Imran S, Amiruddin Zakaria Z. Synthesis of Ruthenium complexes and their catalytic applications: A review. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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9
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Belitz F, Seitz AK, Goebel JF, Hu Z, Gooßen LJ. Ru-Catalyzed C-H Arylation of Acrylic Acids with Aryl Bromides. Org Lett 2022; 24:3466-3470. [PMID: 35506600 DOI: 10.1021/acs.orglett.2c01043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the presence of a [Ru(p-cymene)Cl2]2/triethylphosphine/lithium carbonate catalyst system, aryl bromides undergo (Z)-selective couplings with unprotected 2-arylacrylic acids to form (Z)-diarylacrylic acids. This vinylic C-H functionalization proceeds in high yields of up to 94% and (Z/E)-ratios of up to 99:1, tolerating a wide range of functional groups. Mechanistic studies indicate that the vinylic C-H activation proceeds via base-assisted cyclometalation rather than via a Heck-type mechanism, which explains its orthogonal stereoselectivity.
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Affiliation(s)
- Florian Belitz
- Department of Chemistry and Biochemistry, Ruhr-Universität Bochum, NC 2/170, Universitätsstrasse 150, 44801 Bochum, Germany
| | - Ann-Katrin Seitz
- Department of Chemistry and Biochemistry, Ruhr-Universität Bochum, NC 2/170, Universitätsstrasse 150, 44801 Bochum, Germany
| | - Jonas F Goebel
- Department of Chemistry and Biochemistry, Ruhr-Universität Bochum, NC 2/170, Universitätsstrasse 150, 44801 Bochum, Germany
| | - Zhiyong Hu
- Department of Chemistry and Biochemistry, Ruhr-Universität Bochum, NC 2/170, Universitätsstrasse 150, 44801 Bochum, Germany
| | - Lukas J Gooßen
- Department of Chemistry and Biochemistry, Ruhr-Universität Bochum, NC 2/170, Universitätsstrasse 150, 44801 Bochum, Germany
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10
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Findlay MT, Domingo-Legarda P, McArthur G, Yen A, Larrosa I. Catalysis with cycloruthenated complexes. Chem Sci 2022; 13:3335-3362. [PMID: 35432864 PMCID: PMC8943884 DOI: 10.1039/d1sc06355c] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 02/08/2022] [Indexed: 12/03/2022] Open
Abstract
Cycloruthenated complexes have been studied extensively over the last few decades. Many accounts of their synthesis, characterisation, and catalytic activity in a wide variety of transformations have been reported to date. Compared with their non-cyclometallated analogues, cycloruthenated complexes may display enhanced catalytic activities in known transformations or possess entirely new reactivity. In other instances, these complexes can be chiral, and capable of catalysing stereoselective reactions. In this review, we aim to highlight the catalytic applications of cycloruthenated complexes in organic synthesis, emphasising the recent advancements in this field. We discuss recent advances in the applications of cycloruthenated complexes in organic synthesis, comprising C–H activation, chiral-at-metal catalysis, Z-selective olefin metathesis, transfer hydrogenation, enantioselective cyclopropanations and cycloadditions.![]()
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Affiliation(s)
- Michael T Findlay
- School of Chemistry, University of Manchester Oxford Road Manchester M13 9PL UK
| | | | - Gillian McArthur
- School of Chemistry, University of Manchester Oxford Road Manchester M13 9PL UK
| | - Andy Yen
- School of Chemistry, University of Manchester Oxford Road Manchester M13 9PL UK
| | - Igor Larrosa
- School of Chemistry, University of Manchester Oxford Road Manchester M13 9PL UK
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11
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Liu J, Wang X, Wang Z, Yang Y, Tang Q, Liu H, Huang H. Unlocking a self-catalytic cycle in a copper-catalyzed aerobic oxidative coupling/cyclization reaction. iScience 2022; 25:103906. [PMID: 35243259 PMCID: PMC8881718 DOI: 10.1016/j.isci.2022.103906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/22/2021] [Accepted: 02/08/2022] [Indexed: 12/16/2022] Open
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12
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Zhang L, Wang LL, Fang DC. DFT Case Study on the Comparison of Ruthenium-Catalyzed C-H Allylation, C-H Alkenylation, and Hydroarylation. ACS OMEGA 2022; 7:6133-6141. [PMID: 35224376 PMCID: PMC8867598 DOI: 10.1021/acsomega.1c06584] [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: 11/22/2021] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
Density functional calculations at the B3LYP-D3+IDSCRF/TZP-DKH(-dfg) level of theory have been performed to understand the mechanism of ruthenium-catalyzed C-H allylation reported in the literature in depth. The plausible pathway consisted of four sequential processes, including C-H activation, migratory insertion, amide extrusion, and recovery of the catalyst, in which C-H activation was identified as the rate-determining step. The amide extrusion step could be promoted kinetically by trifluoroacetic acid since its mediation lowered the free-energy barrier from 32.1 to 12.2 kcal/mol. Additional calculations have been performed to explore other common pathways between arenes and alkenes, such as C-H alkenylation and hydroarylation. A comparison of the amide extrusion and β-H elimination steps established the following reactivity sequence of the leaving groups: protonated amide group > β-H group > unprotonated amide group. The suppression of hydroarylation was attributed to the sluggishness of the Ru-C protonation step as compared to the amide extrusion step. This study can unveil factors favoring the C-H allylation reaction.
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Affiliation(s)
- Lei Zhang
- School
of Science, Tianjin Chengjian University, Tianjin 300384, P. R. China
| | - Ling-Ling Wang
- School
of Science, Tianjin Chengjian University, Tianjin 300384, P. R. China
| | - De-Cai Fang
- College
of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
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13
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Prusty P, Jambu S, Jeganmohan M. Rh(III)-Catalyzed Selective Olefination of N-Carboxamide Indoles with Unactivated Olefins at Room Temperature via an Internal Oxidation. Org Lett 2022; 24:1121-1126. [DOI: 10.1021/acs.orglett.1c03905] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Priyambada Prusty
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Subramanian Jambu
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
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14
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Reyes JM, Tumaneng JVM, Yu GU. Facile Grignard Reaction Demonstration Using Molecular Sieved Dried Solvent. ACS CHEMICAL HEALTH & SAFETY 2021. [DOI: 10.1021/acs.chas.1c00015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jude M. Reyes
- Department of Chemistry, School of Science and Engineering, Ateneo de Manila University, Quezon City 1108, Philippines
| | - John Vincent M. Tumaneng
- Department of Chemistry, School of Science and Engineering, Ateneo de Manila University, Quezon City 1108, Philippines
| | - Gilbert U. Yu
- Department of Chemistry, School of Science and Engineering, Ateneo de Manila University, Quezon City 1108, Philippines
- Philippine Institute of Pure and Applied Chemistry, Loyola Heights, Katipunan, Quezon City 1800, Philippines
- Chemistry Department, De La Salle University, William Hall 502, 2401 Taft Avenue, Manila 0922, Philippines
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15
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Altalhi WA, McKay AI, Spyrou B, Canty AJ, Donnelly PS, O'Hair RA. Examination of N,N-dimethylbenzylamine as a substrate for ruthenium-catalysed C-H (thio)amidation: A mass spectrometry and DFT directed study. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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17
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Urgoitia G, Herrero MT, Churruca F, Conde N, SanMartin R. Direct Arylation in the Presence of Palladium Pincer Complexes. Molecules 2021; 26:4385. [PMID: 34299661 PMCID: PMC8305722 DOI: 10.3390/molecules26144385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/14/2021] [Accepted: 07/16/2021] [Indexed: 12/02/2022] Open
Abstract
Direct arylation is an atom-economical alternative to more established procedures such as Stille, Suzuki or Negishi arylation reactions. In comparison with other palladium sources and ligands, the use of palladium pincer complexes as catalysts or pre-catalysts for direct arylation has resulted in improved efficiency, higher reaction yields, and advantageous reaction conditions. In addition to a revision of the literature concerning intra- and intermolecular direct arylation reactions performed in the presence of palladium pincer complexes, the role of these remarkably active catalysts will also be discussed.
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Affiliation(s)
| | | | | | | | - Raul SanMartin
- Department of Organic and Inorganic Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain; (G.U.); (M.T.H.); (F.C.); (N.C.)
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18
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Soulé JF, Bruneau C, Darcel C. Pierre Dixneuf: A Pioneering Career in Organometallic Chemistry Highlighting Ruthenium as a Star Metal in Homogeneous Catalysis. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Kitanosono T, Kobayashi S. Synthetic Organic "Aquachemistry" that Relies on Neither Cosolvents nor Surfactants. ACS CENTRAL SCIENCE 2021; 7:739-747. [PMID: 34079894 PMCID: PMC8161484 DOI: 10.1021/acscentsci.1c00045] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Indexed: 06/12/2023]
Abstract
There is a growing awareness of the underlying power of catalytic reactions in water that is not limited to innate sustainability alone. Some Type III reactions are catalytically accelerated without dissolution of reactants and are occasionally highly selective, as shown by comparison with the corresponding reactions run in organic solvents or under solvent-free conditions. Such catalysts are highly diversified, including hydrophilic, lipophilic, and even solid catalysts. In this Outlook, we highlight the impressive characteristics of illustrative catalysis that is exerted despite the immiscibility of the substrates and reveal the intrinsic benefits of these enigmatic reactions for synthetic organic chemistry, albeit with many details remaining unclear. We hope that this brief introduction to the expanding field of synthetic organic "aquachemistry" will inspire organic chemists to use the platform to invent new transformations.
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Affiliation(s)
- Taku Kitanosono
- Department of Chemistry,
School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shu Kobayashi
- Department of Chemistry,
School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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20
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Umadevi N, Kumar G, Reddy NG, Reddy BS. Recent Advances in C–H Activation and Functionalization of Quinazolinones/ Quinazolines. CURR ORG CHEM 2021. [DOI: 10.2174/1385272824999201210180732] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This review summarizes the transition metal-catalyzed direct C–H functionalization
of quinazolinones and quinazolines through C-C, C-N and C-O bond formations. It focuses
mainly on the C-H (sp<sup>2</sup> or sp<sup>3</sup>) bond arylation, amination, sulfamidation, acetoxylation,
halogenation, annulation of quinazolinones and quinazolines. This review illustrates the scope
of C-H activation and functionalization of various quinazolinone and quinazoline derivatives.
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Affiliation(s)
- N. Umadevi
- Indian Institute of Chemical Technology, Hyderabad, India
| | - G. Kumar
- Department of Chemistry, Yogi Vemana University, Kadapa, Andhra Pradesh, India
| | - N.C. Gangi Reddy
- Department of Chemistry, Yogi Vemana University, Kadapa, Andhra Pradesh, India
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21
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Karlinskii BY, Ananikov VP. Catalytic C-H Functionalization of Unreactive Furan Cores in Bio-Derived Platform Chemicals. CHEMSUSCHEM 2021; 14:558-568. [PMID: 33207076 DOI: 10.1002/cssc.202002397] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/17/2020] [Indexed: 06/11/2023]
Abstract
C-H functionalization is one of the most convenient and powerful tools in the arsenal of modern chemistry, deservedly nominated as the "Holy Grail" of organic synthesis. A frequent disadvantage of this method is the need for harsh reaction conditions to carry out transformations of inert C-H bonds, which limits the possibility of its use for modifying less stable substrates. Biomass-derived furan platform chemicals, which have a relatively unstable aromatic furan core and highly reactive side chain substituents, are extremely promising and valuable organic molecules that are currently widely used in a variety of research and industrial fields. The high sensitivity of furan derivatives to acids, strong oxidants, and high temperatures significantly limits the use of classical methods of C-H functionalization for their modification. New methods of catalytic functionalization of non-reactive furan cores are urgently required to obtain a new generation of materials with controlled properties and potentially bioactive substances.
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Affiliation(s)
- Bogdan Y Karlinskii
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospekt 47, Moscow, 119991, Russia
| | - Valentine P Ananikov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospekt 47, Moscow, 119991, Russia
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22
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Dai L, Yu S, Shao Y, Li R, Chen Z, Lv N, Chen J. Palladium-catalyzed C-H activation of simple arenes and cascade reaction with nitriles: access to 2,4,5-trisubstituted oxazoles. Chem Commun (Camb) 2021; 57:1376-1379. [PMID: 33433549 DOI: 10.1039/d0cc07547g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An efficient and straightforward protocol for the assembly of the pharmaceutically and biologically valuable oxazole skeleton is achieved for the first time from readily available simple arenes and functionalized aliphatic nitriles. This transformation involves palladium-catalyzed C-H activation, carbopalladation and a tandem annulation sequence in one pot. Notably, the reaction proceeds efficiently under redox-neutral conditions, and exhibits high atom-economy. Deuterium-labeling experiments suggested that C-H bond cleavage of the simple arenes might be the rate-determining step.
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Affiliation(s)
- Ling Dai
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.
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23
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Abstract
Metal-catalyzed activations of inert sp3C–H bonds have recently brought a revolution in the synthesis of useful molecules and molecular materials, due to the interest of the formed sp3C–SiR3 silanes, stable organometallic species, and for further functionalizations that sp3C–H bonds cannot reach directly.
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Affiliation(s)
- Bin Li
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P. R. China
| | - Pierre H. Dixneuf
- Univ. Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) UMR 6226
- F-35000 Rennes
- France
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24
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Lin Q, Lin Z, Pan M, Zheng Q, Li H, Chen X, Darcel C, Dixneuf PH, Li B. Alkenes as hydrogen trappers to control the regio-selective ruthenium(ii) catalyzed ortho C–H silylation of amides and anilides. Org Chem Front 2021. [DOI: 10.1039/d0qo01031f] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A convenient and practical pathway to versatile silylated amides and anilides is described via efficient and selective ruthenium(ii) catalyzed ortho C–H silylation with different alkenes as the hydrogen acceptors.
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Affiliation(s)
- Qiao Lin
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
| | - Zirui Lin
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
| | - Mingxing Pan
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
| | - Qiaojin Zheng
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
| | - Hui Li
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
| | - Xiuwen Chen
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
| | - Christophe Darcel
- Univ. Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes)
- F-35000 Rennes
- France
| | - Pierre H. Dixneuf
- Univ. Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes)
- F-35000 Rennes
- France
| | - Bin Li
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
- Univ. Rennes
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25
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Kumar S, Mahajan B, Malviya BK, Sukumar G, Srihari P, Singh AK. Electricity-induced micro-flow C–H/N–H alkyne annulation: a greener approach to access heteroaromatic compounds. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00260k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Fast access to structurally diverse heteroaromatic compounds is demonstrated in an integrated continuous-flow manner without employing any expensive oxidant.
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Affiliation(s)
- Sanjeev Kumar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad 201002, Uttar Pradesh, India
| | - Bhushan Mahajan
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad 201002, Uttar Pradesh, India
| | - Bhanwar Kumar Malviya
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - Genji Sukumar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - P. Srihari
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad 201002, Uttar Pradesh, India
| | - Ajay K. Singh
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre (CSIR-HRDC) Campus, Ghaziabad 201002, Uttar Pradesh, India
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26
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Benzai A, Derridj F, Doucet H, Soulé J. Palladium−Ruthenium Catalyst Complementarity Strengthens
Ortho
‐Directed C−H Bond Arylation of 2‐Arylpyrazines. ChemCatChem 2020. [DOI: 10.1002/cctc.202001338] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Amal Benzai
- Univ Rennes CNRS, ISCR UMR6226 F-3500 Rennes France
- Laboratoire de Physique et Chimie des Matériaux (LPCM) UMMTO University BP 17 RP 15000 Tizi-Ouzou Algeria
| | - Fazia Derridj
- Laboratoire de Physique et Chimie des Matériaux (LPCM) UMMTO University BP 17 RP 15000 Tizi-Ouzou Algeria
| | - Henri Doucet
- Univ Rennes CNRS, ISCR UMR6226 F-3500 Rennes France
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27
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Bu Q, Kuniyil R, Shen Z, Gońka E, Ackermann L. Insights into Ruthenium(II/IV)-Catalyzed Distal C-H Oxygenation by Weak Coordination. Chemistry 2020; 26:16450-16454. [PMID: 32596872 PMCID: PMC7756554 DOI: 10.1002/chem.202003062] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Indexed: 11/07/2022]
Abstract
C-H hydroxylation of aryl acetamides and alkyl phenylacetyl esters was accomplished via challenging distal weak O-coordination by versatile ruthenium(II/IV) catalysis. The ruthenium(II)-catalyzed C-H oxygenation of aryl acetamides proceeded through C-H activation, ruthenium(II/IV) oxidation and reductive elimination, thus providing step-economical access to valuable phenols. The p-cymene-ruthenium(II/IV) manifold was established by detailed experimental and DFT-computational studies.
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Affiliation(s)
- Qingqing Bu
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Rositha Kuniyil
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Zhigao Shen
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Elżbieta Gońka
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
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28
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Hanopolskyi AI, Smaliak VA, Novichkov AI, Semenov SN. Autocatalysis: Kinetics, Mechanisms and Design. CHEMSYSTEMSCHEM 2020. [DOI: 10.1002/syst.202000026] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Anton I. Hanopolskyi
- Department of Organic Chemistry Weizmann Institute of Science Herzl, 234 7610001 Rehovot Israel
| | - Viktoryia A. Smaliak
- Department of Organic Chemistry Weizmann Institute of Science Herzl, 234 7610001 Rehovot Israel
| | - Alexander I. Novichkov
- Department of Organic Chemistry Weizmann Institute of Science Herzl, 234 7610001 Rehovot Israel
| | - Sergey N. Semenov
- Department of Organic Chemistry Weizmann Institute of Science Herzl, 234 7610001 Rehovot Israel
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29
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Zhang J, Liu Y, Jia Q, Wang Y, Ma Y, Szostak M. Ruthenium(II)-Catalyzed C–H Arylation of N,N-Dialkyl Thiobenzamides with Boronic Acids by Sulfur Coordination in 2-MeTHF. Org Lett 2020; 22:6884-6890. [DOI: 10.1021/acs.orglett.0c02410] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jin Zhang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Ying Liu
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Qiangqiang Jia
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
| | - Yue Wang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Yangmin Ma
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Michal Szostak
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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30
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Choi I, Messinis AM, Ackermann L. C7-Indole Amidations and Alkenylations by Ruthenium(II) Catalysis. Angew Chem Int Ed Engl 2020; 59:12534-12540. [PMID: 32485007 PMCID: PMC7383588 DOI: 10.1002/anie.202006164] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/01/2020] [Indexed: 12/11/2022]
Abstract
C7-H-functionalized indoles are ubiquitous structural units of biological and pharmaceutical compounds for numerous antiviral agents against SARS-CoV or HIV-1. Thus, achieving site-selective functionalizations of the C7-H position of indoles, while discriminating among other bonds, is in high demand. Herein, we disclose site-selective C7-H activations of indoles by ruthenium(II) biscarboxylate catalysis under mild conditions. Base-assisted internal electrophilic-type substitution C-H ruthenation by weak O-coordination enabled the C7-H functionalization of indoles and offered a broad scope, including C-N and C-C bond formation. The versatile ruthenium-catalyzed C7-H activations were characterized by gram-scale syntheses and the traceless removal of the directing group, thus providing easy access to pharmaceutically relevant scaffolds. Detailed mechanistic studies through spectroscopic and spectrometric analyses shed light on the unique nature of the robust ruthenium catalysis for the functionalization of the C7-H position of indoles.
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Affiliation(s)
- Isaac Choi
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable Chemistry (WISCh)Georg-August-UniversitätTammanstrasse 237077GöttingenGermany
| | - Antonis M. Messinis
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable Chemistry (WISCh)Georg-August-UniversitätTammanstrasse 237077GöttingenGermany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable Chemistry (WISCh)Georg-August-UniversitätTammanstrasse 237077GöttingenGermany
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31
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Su Z, Liu B, Liao H, Lin HW. Synthesis of N-Heterocycles by Reductive Cyclization of Nitroalkenes Using Molybdenum Hexacarbonyl as Carbon Monoxide Surrogate. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000580] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Zhiyou Su
- Research Center for Marine Drugs; State Key Laboratory of Oncogene and Related Genes; Department of Pharmacy, Ren Ji Hospital, School of Medicine; Shanghai Jiao Tong University; 200127 Shanghai China
| | - Bo Liu
- Research Center for Marine Drugs; State Key Laboratory of Oncogene and Related Genes; Department of Pharmacy, Ren Ji Hospital, School of Medicine; Shanghai Jiao Tong University; 200127 Shanghai China
| | - Hongze Liao
- Research Center for Marine Drugs; State Key Laboratory of Oncogene and Related Genes; Department of Pharmacy, Ren Ji Hospital, School of Medicine; Shanghai Jiao Tong University; 200127 Shanghai China
| | - Hou-Wen Lin
- Research Center for Marine Drugs; State Key Laboratory of Oncogene and Related Genes; Department of Pharmacy, Ren Ji Hospital, School of Medicine; Shanghai Jiao Tong University; 200127 Shanghai China
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32
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Choi I, Messinis AM, Ackermann L. C7‐Indol‐Amidierung und ‐Alkenylierung durch Ruthenium(II)‐ Katalyse. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006164] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Isaac Choi
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry (WISCh) Georg-August-Universität Tammanstraße 2 37077 Göttingen Deutschland
| | - Antonis M. Messinis
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry (WISCh) Georg-August-Universität Tammanstraße 2 37077 Göttingen Deutschland
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry (WISCh) Georg-August-Universität Tammanstraße 2 37077 Göttingen Deutschland
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33
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Wang X, Zhang J, He Y, Chen D, Wang C, Yang F, Wang W, Ma Y, Szostak M. Ruthenium(II)-Catalyzed Ortho-C–H Alkylation of Naphthylamines with Diazo Compounds for Synthesis of 2,2-Disubstituted π-Extended 3-Oxindoles in Water. Org Lett 2020; 22:5187-5192. [DOI: 10.1021/acs.orglett.0c01811] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Xiaogang Wang
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Jin Zhang
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Yuan He
- Technology Center, China Tobacco Shaanxi Industrial Co., Ltd., Baoji 721013, Shaanxi, China
| | - Di Chen
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Chao Wang
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Fangzhou Yang
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Weitao Wang
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Yangmin Ma
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Michal Szostak
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an 710021, China
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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34
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Jambu S, Jeganmohan M. Rhodium(III)-Catalyzed C–H Olefination of Aromatic/Vinyl Acids with Unactivated Olefins at Room Temperature. Org Lett 2020; 22:5057-5062. [DOI: 10.1021/acs.orglett.0c01636] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Subramanian Jambu
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
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35
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Kumar M, Verma S, Verma AK. Ru(II)-Catalyzed Oxidative Olefination of Benzamides: Switchable Aza-Michael and Aza-Wacker Reaction for Synthesis of Isoindolinones. Org Lett 2020; 22:4620-4626. [DOI: 10.1021/acs.orglett.0c01237] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Manoj Kumar
- Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Shalini Verma
- Department of Chemistry, University of Delhi, Delhi 110007, India
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36
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Yang L, Steinbock R, Scheremetjew A, Kuniyil R, Finger LH, Messinis AM, Ackermann L. Azaruthena(II)‐bicyclo[3.2.0]heptadien: Schlüsselintermediat für Ruthenaelektro(II/III/I)‐katalysierte Alkinanellierungen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000762] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Long Yang
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Ralf Steinbock
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Alexej Scheremetjew
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Rositha Kuniyil
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Lars H. Finger
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Antonis M. Messinis
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität Göttingen Tammannstraße 2 37077 Göttingen Deutschland
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37
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Yang L, Steinbock R, Scheremetjew A, Kuniyil R, Finger LH, Messinis AM, Ackermann L. Azaruthena(II)-bicyclo[3.2.0]heptadiene: Key Intermediate for Ruthenaelectro(II/III/I)-catalyzed Alkyne Annulations. Angew Chem Int Ed Engl 2020; 59:11130-11135. [PMID: 32129528 DOI: 10.1002/anie.202000762] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Indexed: 12/15/2022]
Abstract
A ruthenium-catalyzed electrochemical dehydrogenative annulation reaction of imidazoles with alkynes has been established, enabling the preparation of various bridgehead N-fused [5,6]-bicyclic heteroarenes through regioselective electrochemical C-H/N-H annulation without chemical metal oxidants. Novel azaruthenabicyclo[3.2.0]heptadienes were fully characterized and identified as key intermediates. Mechanistic studies are suggestive of an oxidatively induced reductive elimination pathway within a ruthenium(II/III) regime.
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Affiliation(s)
- Long Yang
- Institut für Organische und Biomolekulare Chemie, and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
| | - Ralf Steinbock
- Institut für Organische und Biomolekulare Chemie, and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
| | - Alexej Scheremetjew
- Institut für Organische und Biomolekulare Chemie, and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
| | - Rositha Kuniyil
- Institut für Organische und Biomolekulare Chemie, and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
| | - Lars H Finger
- Institut für Organische und Biomolekulare Chemie, and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
| | - Antonis M Messinis
- Institut für Organische und Biomolekulare Chemie, and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, and Wöhler Research Institute for Sustainable Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
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38
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Sagadevan A, Charitou A, Wang F, Ivanova M, Vuagnat M, Greaney MF. Ortho C-H arylation of arenes at room temperature using visible light ruthenium C-H activation. Chem Sci 2020; 11:4439-4443. [PMID: 34122900 PMCID: PMC8159458 DOI: 10.1039/d0sc01289k] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A ruthenium-catalyzed ortho C–H arylation process is described using visible light. Using the readily available catalyst [RuCl2(p-cymene)]2, visible light irradiation was found to enable arylation of 2-aryl-pyridines at room temperature for a range of aryl bromides and iodides. A ruthenium-catalyzed ortho C–H arylation process is described using visible light.![]()
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Affiliation(s)
| | - Anastasios Charitou
- School of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Fen Wang
- School of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Maria Ivanova
- School of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Martin Vuagnat
- School of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
| | - Michael F Greaney
- School of Chemistry, The University of Manchester Oxford Road Manchester M13 9PL UK
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39
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Mokesch S, Cseh K, Geisler H, Hejl M, Klose MHM, Roller A, Meier-Menches SM, Jakupec MA, Kandioller W, Keppler BK. Investigations on the Anticancer Potential of Benzothiazole-Based Metallacycles. Front Chem 2020; 8:209. [PMID: 32318543 PMCID: PMC7147246 DOI: 10.3389/fchem.2020.00209] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 03/05/2020] [Indexed: 11/13/2022] Open
Abstract
A series of 2-phenylbenzothiazole derivatives and their corresponding organometallic ruthenium(II) and osmium(II) complexes were synthesized, designed to exploit both, the attributes of the half-sandwich transition metal scaffold and the bioactivity spectrum of the applied 2-phenylbenzothiazoles. All synthesized compounds were characterized via standard analytical methods. The obtained organometallics showed antiproliferative activity in the low μM range and are thus at least an order of magnitude more potent than the free ligands. ESI-MS measurements showed that the examined compounds were stable in aqueous solution over 48 h. Additionally, their binding preferences to small biomolecules, their cellular accumulation and capacity of inducing apoptosis/necrosis were investigated. Based on the fluorescence properties of the selected ligand and the corresponding ruthenium complex, their subcellular distribution was studied by fluorescence microscopy, revealing a high degree of colocalization with acidic organelles of cancer cells.
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Affiliation(s)
- Stephan Mokesch
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Klaudia Cseh
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Heiko Geisler
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Michaela Hejl
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Matthias H. M. Klose
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Alexander Roller
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Samuel M. Meier-Menches
- Research Cluster Translational Cancer Therapy Research, University of Vienna, Vienna, Austria
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Michael A. Jakupec
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
- Research Cluster Translational Cancer Therapy Research, University of Vienna, Vienna, Austria
| | - Wolfgang Kandioller
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
- Research Cluster Translational Cancer Therapy Research, University of Vienna, Vienna, Austria
| | - Bernhard K. Keppler
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
- Research Cluster Translational Cancer Therapy Research, University of Vienna, Vienna, Austria
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40
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McKay AI, Altalhi WAO, McInnes LE, Czyz ML, Canty AJ, Donnelly PS, O'Hair RAJ. Identification of the Side Products That Diminish the Yields of the Monoamidated Product in Metal-Catalyzed C-H Amidation of 2-Phenylpyridine with Arylisocyanates. J Org Chem 2020; 85:2680-2687. [PMID: 31971390 DOI: 10.1021/acs.joc.9b02831] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The Ru(II)-catalyzed amidation of 2-arylpyridines with aryl isocyanates via C-H bond activation is less efficient than described previously, due to the formation of a series of side products, which were readily identified using direct infusion electrospray mass spectrometry and high-performance liquid chromatography-mass spectrometry.
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Affiliation(s)
- Alasdair I McKay
- School of Chemistry , The University of Melbourne , Melbourne , Victoria 3010 , Australia.,Bio21 Institute of Molecular Science and Biotechnology , The University of Melbourne , Melbourne , Victoria 3010 , Australia
| | - Weam A O Altalhi
- School of Chemistry , The University of Melbourne , Melbourne , Victoria 3010 , Australia.,Bio21 Institute of Molecular Science and Biotechnology , The University of Melbourne , Melbourne , Victoria 3010 , Australia
| | - Lachlan E McInnes
- School of Chemistry , The University of Melbourne , Melbourne , Victoria 3010 , Australia.,Bio21 Institute of Molecular Science and Biotechnology , The University of Melbourne , Melbourne , Victoria 3010 , Australia
| | - Milena L Czyz
- School of Chemistry , The University of Melbourne , Melbourne , Victoria 3010 , Australia
| | - Allan J Canty
- School of Natural Sciences-Chemistry , University of Tasmania , Private Bag 75 , Hobart , Tasmania 7001 , Australia
| | - Paul S Donnelly
- School of Chemistry , The University of Melbourne , Melbourne , Victoria 3010 , Australia.,Bio21 Institute of Molecular Science and Biotechnology , The University of Melbourne , Melbourne , Victoria 3010 , Australia
| | - Richard A J O'Hair
- School of Chemistry , The University of Melbourne , Melbourne , Victoria 3010 , Australia.,Bio21 Institute of Molecular Science and Biotechnology , The University of Melbourne , Melbourne , Victoria 3010 , Australia
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41
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Kong X, Xu B. OrthoC H amidations enabled by a recyclable manganese-ionic liquid catalytic system. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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42
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Chen W, Li HJ, Li QY, Wu YC. Direct oxidative coupling of N-acyl pyrroles with alkenes by ruthenium(ii)-catalyzed regioselective C2-alkenylation. Org Biomol Chem 2020; 18:500-513. [PMID: 31850444 DOI: 10.1039/c9ob02421b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ruthenium(ii)-catalyzed oxidative coupling by C2-alkenylation of N-acyl pyrroles with alkenes has been described. The acyl unit was found to be an effective chelating group for the activation of aryl C-H bonds ortho to the directing group. The alkenylation reaction of benzoyl pyrroles occurred regioselectively at the C2-position of the pyrrole ring, without touching the benzene ring. The reaction provides exclusively monosubstituted pyrroles under the optimized conditions. Disubstituted pyrroles could be obtained using higher loadings of the ruthenium(ii)-catalyst and the additives.
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Affiliation(s)
- Weiqiang Chen
- School of Marine Science and Technology, Harbin Institute of Technology, 2 Weihai Road, Weihai 264209, P. R. China.
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43
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Li S, Shan QC, Hu LM, Ma XQ, Hu XH. Merging alkenyl C–H activation with the ring-opening of 1,2-oxazetidines: ruthenium-catalyzed aminomethylation of enamides. Chem Commun (Camb) 2020; 56:7969-7972. [DOI: 10.1039/d0cc03081c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
1,2-Oxazetidines have been utilized as formaldimine precursors for the direct aminomethylation of enamides under a Ru(ii) species.
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Affiliation(s)
- Song Li
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Qi-Chao Shan
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Lu-Min Hu
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Xue-Qing Ma
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Xu-Hong Hu
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing 211816
- China
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44
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Kaur M, Patra K, Din Reshi NU, Bera JK. Base-Controlled Directed Synthesis of Metal–Methyleneimidazoline (MIz) and Metal–Mesoionic Carbene (MIC) Compounds. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00725] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mandeep Kaur
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Kamaless Patra
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Noor U Din Reshi
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Jitendra K. Bera
- Department of Chemistry and Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
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45
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Alharis RA, McMullin CL, Davies DL, Singh K, Macgregor SA. Understanding electronic effects on carboxylate-assisted C-H activation at ruthenium: the importance of kinetic and thermodynamic control. Faraday Discuss 2019; 220:386-403. [PMID: 31528900 DOI: 10.1039/c9fd00063a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Meta- and para-substituted 1-phenylpyrazoles (R-phpyz-H) react with [RuCl2(p-cymene)]2 in the presence of NaOAc to form cyclometallated complexes [M(R-phpyz)Cl(p-cymene)] (where R = NMe2, OMe, Me, H, F, CF3 and NO2). Experimental and DFT studies indicate that product formation can be reversible or irreversible depending on the substituents and the reaction conditions. Competition experiments show that the kinetic selectivity favours electron-donating substituents and correlate well with the Hammett parameter, giving a negative slope (ρ = -2.4) that is consistent with a cationic transition state. However, surprisingly, the thermodynamic selectivity is completely opposite, with substrates featuring electron-withdrawing groups being favoured. These trends are reproduced with DFT calculations that locate a rate-limiting transition state dominated by Ru-O bond dissociation and minimal C-H bond elongation. Detailed computational analysis of these transition states shows that C-H activation proceeds by an AMLA/CMD mechanism through a synergic combination of a C-H→Ru agostic interaction and C-HO H-bonding. NBO calculations also highlight a syndetic bonding term, and the relative weights of these three components vary in a complementary fashion depending on the nature of the substituent. With meta-substituted ligands H/D exchange experiments signal kinetically accessible ortho-C-H activation when R = NMe2, OMe and Me. This is also modelled computationally and the calculations highlight the kinetic relevance of the HOAc/Cl exchange that occurs post C-H bond cleavage, in particular with the bulkier NMe2 and Me substituents. Our study highlights that the experimental substituent effects are dependent on the reaction conditions and so using such studies to assign the mechanism of C-H activation in either stoichiometric or catalytic reactions may be misleading.
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Affiliation(s)
- Raed A Alharis
- Department of Chemistry, University of Leicester, Leicester, LE1 7RH, UK.
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46
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Liu S, Lin Q, Liao C, Chen J, Zhang K, Liu Q, Li B. Ruthenium(ii)/acetate catalyzed intermolecular dehydrogenative ortho C-H silylation of 2-aryl N-containing heterocycles. Org Biomol Chem 2019; 17:4115-4120. [PMID: 30968915 DOI: 10.1039/c9ob00609e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The first application of a RuHCl(CO)(PPh3)3-OAc catalytic system on the selective intermolecular mono C-H silylation of 2-aryl N-heterocycles using HSiEt3 as the silylating reagent has been described. This protocol features good functional group tolerance and high regioselectivity, and has potential for gram scale-up, which provides a convenient and practical pathway for the synthesis of versatile organosilane compounds. This catalytic system can also be applied to the silylation of challenging sp3 C-H bonds.
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Affiliation(s)
- Shun Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, Guangdong Province, P.R. China.
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47
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Yuan YC, Goujon M, Bruneau C, Roisnel T, Gramage-Doria R. C–H Bond Alkylation of Cyclic Amides with Maleimides via a Site-Selective-Determining Six-Membered Ruthenacycle. J Org Chem 2019; 84:16183-16191. [DOI: 10.1021/acs.joc.9b02690] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu-Chao Yuan
- Univ Rennes, CNRS, ISCR-UMR6226, F-35000 Rennes, France
| | - Marion Goujon
- Univ Rennes, CNRS, ISCR-UMR6226, F-35000 Rennes, France
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48
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Affiliation(s)
- Manjula D. Rathnayake
- Department of Chemistry, Oklahoma State University, 107, Physical Science, Stillwater, Oklahoma 74078, United States
| | - Jimmie D. Weaver
- Department of Chemistry, Oklahoma State University, 107, Physical Science, Stillwater, Oklahoma 74078, United States
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49
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Koch V, Meschkov A, Feuerstein W, Pfeifer J, Fuhr O, Nieger M, Schepers U, Bräse S. Synthesis, Characterization, and Biological Properties of Steroidal Ruthenium(II) and Iridium(III) Complexes Based on the Androst-16-en-3-ol Framework. Inorg Chem 2019; 58:15917-15926. [DOI: 10.1021/acs.inorgchem.9b02402] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vanessa Koch
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Anna Meschkov
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann von Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Wolfram Feuerstein
- Institute of Inorganic Chemistry, Division Molecular Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131 Karlsruhe, Germany
| | - Juliana Pfeifer
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann von Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Olaf Fuhr
- Institute for Nanotechnology (INT) and Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), Hermann von Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Martin Nieger
- Department of Chemistry, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland
| | - Ute Schepers
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann von Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Stefan Bräse
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
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50
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Kong X, Xu B. Manganese‐Catalyzed Oxime‐Directed
ortho
‐C−H Amidation in Ionic Liquids. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900469] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Xianqiang Kong
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 P. R. China
| | - Bo Xu
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 P. R. China
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