1
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Ivantcova PM, Kolychev EL, Sizikov AA, Mochalova EN, Cherkasov VR, Nikitin MP. Carbene-coated metal nanoparticles for in vivo applications. Colloids Surf B Biointerfaces 2024; 242:114097. [PMID: 39067190 DOI: 10.1016/j.colsurfb.2024.114097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 07/11/2024] [Accepted: 07/13/2024] [Indexed: 07/30/2024]
Abstract
N-Heterocyclic carbenes (NHC) are well-recognized ligands of choice for preparing robust transition metal species. However, their use for fabrication of biomedically relevant nanoparticles has been limited to the synthesis of non-targeted particles showing increased tolerance to different aqueous coagulants. In this work, the first example of carbene-coated metal nanoparticles suitable for in vivo applications is presented. Directed design of a novel biscarbene NHC ligand allowed to prepare the first magnetite/gold (Fe3O4@AuNP@NHC) nanostructures and carbene gold (AuNP@NHC) nanoparticles with significant stability in aqueous solutions and enhanced ability to form bioconjugates. Furthermore, these nanoparticles exhibit an extraordinary property for inorganic nanoparticles: they can endure several additive-free air drying/redispersion cycles without deterioration of their colloidal behavior. Bioconjugated AuNP@NHC and multimodal Fe3O4@AuNP@NHC demonstrated a successful performance in three distinct applications: lateral flow tests, specific cancer cell targeting, and bioimaging. Thus, the results show the notable advantages of the N-heterocyclic carbene coating of inorganic nanoparticles and their utility for complex biomedical applications.
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Affiliation(s)
- Polina M Ivantcova
- Sirius University of Science and Technology, Olimpiyskiy ave, b.1, Sirius, Krasnodar region 354340, Russian Federation.
| | - Eugene L Kolychev
- Moscow Center for Advanced Studies, Kulakova str. 20, Moscow 123592, Russian Federation.
| | - Artem A Sizikov
- Moscow Center for Advanced Studies, Kulakova str. 20, Moscow 123592, Russian Federation; Moscow Institute of Physics and Technology, Kerchenskaya str., 1А, Moscow 117303, Russian Federation
| | - Elizaveta N Mochalova
- Sirius University of Science and Technology, Olimpiyskiy ave, b.1, Sirius, Krasnodar region 354340, Russian Federation; Moscow Center for Advanced Studies, Kulakova str. 20, Moscow 123592, Russian Federation; Moscow Institute of Physics and Technology, Kerchenskaya str., 1А, Moscow 117303, Russian Federation
| | - Vladimir R Cherkasov
- Moscow Center for Advanced Studies, Kulakova str. 20, Moscow 123592, Russian Federation; Moscow Institute of Physics and Technology, Kerchenskaya str., 1А, Moscow 117303, Russian Federation
| | - Maxim P Nikitin
- Sirius University of Science and Technology, Olimpiyskiy ave, b.1, Sirius, Krasnodar region 354340, Russian Federation; Moscow Center for Advanced Studies, Kulakova str. 20, Moscow 123592, Russian Federation; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russian Federation
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2
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Ceccherini V, Giorgi E, Mannelli M, Cirri D, Gamberi T, Gabbiani C, Pratesi A. Synthesis, Chemical Characterization, and Biological Evaluation of Hydrophilic Gold(I) and Silver(I) N-Heterocyclic Carbenes as Potential Anticancer Agents. Inorg Chem 2024; 63:16949-16963. [PMID: 39226133 DOI: 10.1021/acs.inorgchem.4c02581] [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: 09/05/2024]
Abstract
A series of new gold(I) and silver(I) N-heterocyclic carbenes bearing a 1-thio-β-d-glucose tetraacetate moiety was synthesized and chemically characterized. The compounds' stability and solubility in physiological conditions were investigated employing a multitechnique approach. Interaction studies with biologically relevant proteins, such as superoxide dismutase (SOD) and human serum albumin (HSA), were conducted via UV-vis absorption spectroscopy and high-resolution ESI mass spectrometry. The biological activity of the compounds was evaluated in the A2780 and A2780R (cisplatin-resistant) ovarian cancer cell lines and the HSkMC (human skeletal muscle) healthy cell line. Inhibition studies of the selenoenzyme thioredoxin reductase (TrxR) were also carried out. The results highlighted that the gold complexes are more stable in aqueous environment and capable of interaction with SOD and HSA. Moreover, these carbenes strongly inhibited the TrxR activity. In contrast, the silver ones underwent structural alterations in the aqueous medium and showed greater antiproliferative activity.
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Affiliation(s)
- Valentina Ceccherini
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Ester Giorgi
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Michele Mannelli
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy
| | - Damiano Cirri
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Tania Gamberi
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy
| | - Chiara Gabbiani
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
| | - Alessandro Pratesi
- Department of Chemistry and Industrial Chemistry, University of Pisa, Via G. Moruzzi 13, 56124 Pisa, Italy
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3
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Kılınçarslan R, Tuncer H, Özdemir N, Çetinkaya B. Vitamin B1-based thiazol-2-ylidene-Ru(II) complexes: recyclable transfer hydrogenation catalysts in water. Dalton Trans 2024; 53:9192-9197. [PMID: 38742996 DOI: 10.1039/d4dt00445k] [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
The [(p-cymene)RuCl(κ2C,N-{CNHC-NH})]+X- (CNHC = thiazol-2-ylidene) complexes with a bidentate ligand (2: X = Cl and 3: X = PF6) were prepared by a one-pot reaction of vitamin B1 (VB1, 1), Ag2O and [(p-cymene)RuCl2]2. In the complexes, VB1 coordinates through C2 and the exocyclic N in the imino form with the κ2-(C,N) coordination mode. The complexes 2 and 3 are stable in the solid state, but slowly release p-cymene in solution. Furthermore, upon heating in polar solvents, 2 or 3 can be converted by ligand exchange reactions to produce [(L)3RuCl(κ2C,N-{CNHC-NH})]+PF6- (4: L = py).Robustness was improved remarkably for 4. The complex 4 is stable in the solid state and in solution. The complexes 2-4 have been identified by 1H and 13C{1H} 2D NMR spectroscopy and 2 and 4 were studied by X-ray crystallography. In an effort to develop a recyclable catalyst in water, 2-4 were evaluated for TH of ketones and aldehydes with an azeotropic mixture of HCOOH/Et3N in water. The complexes 3 and 4 exhibited very good catalytic activity and 4 could be reused nine times without significant loss of activity, giving a high turnover frequency (TOF50%(h-1) = 1286).
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Affiliation(s)
- Rafet Kılınçarslan
- Pamukkale University, Faculty of Science, Department of Chemistry, 20070, Denizli, Turkey.
| | - Hayriye Tuncer
- Pamukkale University, Faculty of Science, Department of Chemistry, 20070, Denizli, Turkey.
| | - Namık Özdemir
- Ondokuz Mayıs University, Faculty of Science, Department of Physics, 55139, Samsun, Turkey
| | - Bekir Çetinkaya
- Ege University, Faculty of Science, Department of Chemistry, 35100, İzmir, Turkey
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4
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Tolbatov I, Umari P, Marrone A. Mechanism of Action of Antitumor Au(I) N-Heterocyclic Carbene Complexes: A Computational Insight on the Targeting of TrxR Selenocysteine. Int J Mol Sci 2024; 25:2625. [PMID: 38473872 DOI: 10.3390/ijms25052625] [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: 02/15/2024] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
The targeting of human thioredoxin reductase is widely recognized to be crucially involved in the anticancer properties of several metallodrugs, including Au(I) complexes. In this study, the mechanism of reaction between a set of five N-heterocyclic carbene Au(I) complexes and models of the active Sec residue in human thioredoxin reductase was investigated by means of density functional theory approaches. The study was specifically addressed to the kinetics and thermodynamics of the tiled process by aiming at elucidating and explaining the differential inhibitory potency in this set of analogous Au(I) bis-carbene complexes. While the calculated free energy profile showed a substantially similar reactivity, we found that the binding of these Au(I) bis-carbene at the active CysSec dyad in the TrxR enzyme could be subjected to steric and orientational restraints, underlining both the approach of the bis-carbene scaffold and the attack of the selenol group at the metal center. A new and detailed mechanistic insight to the anticancer activity of these Au(I) organometallic complexes was thus provided by consolidating the TrxR targeting paradigm.
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Affiliation(s)
- Iogann Tolbatov
- Department of Physics and Astronomy, University of Padova, Via F. Marzolo 8, 35131 Padova, Italy
| | - Paolo Umari
- Department of Physics and Astronomy, University of Padova, Via F. Marzolo 8, 35131 Padova, Italy
| | - Alessandro Marrone
- Dipartimento di Farmacia, Università "G d'Annunzio" di Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy
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5
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Baguli S, Sarkar S, Nath S, Mallick D, Mukherjee D. Divergent Synthesis of Chelating Aziridines and Cyclic(Alkyl)(Amino)Carbenes (CAACs) from Pyridyl-Tethered Robust Azomethine Ylides. Angew Chem Int Ed Engl 2023; 62:e202312858. [PMID: 37758683 DOI: 10.1002/anie.202312858] [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: 08/31/2023] [Revised: 09/23/2023] [Accepted: 09/27/2023] [Indexed: 09/29/2023]
Abstract
Azomethine ylides are typically in situ generated synthons for making N-heterocycles through cycloaddition reactions. But an offbeat aspect about them is the isomeric nature of aldiminium-based azomethine ylides and (alkyl/aryl)(amino)carbenes, interconvertible by a formal 1,3-H+ transfer. Herein, two thermally robust azomethine ylides with a N-appended picolyl sidearm are isolated, which cyclize to py aziridines at 80 °C but unprecedentedly result N-pico CAAC-CuCl (CAAC=cyclic(alkyl)(amino)carbene) complexes when heated with CuCl at merely 60 °C. The pendant Npy , as revealed by computational analysis, plays a crucial role in this unusual 1,3-H+ shift using a deprotonation-protonation sequence, as well as in placing the CuCl at the carbenic site in tandem. The softer nature of Cu(I) is also critical. Chelating CAACs are rare and one with a N-tethered additional donor is priorly unknown. Both N-pico CAAC and py aziridine are bidentate chelators giving highly active cationic Rh(I) catalysts for hydrosilylating unactivated olefins by Et3 SiH. Notably, the py aziridine-Rh(I) is superior than the N-pico CAAC-Rh(I) catalyst.
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Affiliation(s)
- Sudip Baguli
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata Mohanpur, Nadia, 741246, India
| | - Subham Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata Mohanpur, Nadia, 741246, India
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, 700073, India
| | - Soumajit Nath
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata Mohanpur, Nadia, 741246, India
| | - Dibyendu Mallick
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, 700073, India
| | - Debabrata Mukherjee
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata Mohanpur, Nadia, 741246, India
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6
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Ghadwal RS. 1,3-Imidazole-Based Mesoionic Carbenes and Anionic Dicarbenes: Pushing the Limit of Classical N-Heterocyclic Carbenes. Angew Chem Int Ed Engl 2023; 62:e202304665. [PMID: 37132480 DOI: 10.1002/anie.202304665] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/04/2023]
Abstract
Classical N-heterocyclic carbenes (NHCs) featuring the carbene center at the C2-position of 1,3-imidazole framework (i.e. C2-carbenes) are well acknowledged as very versatile neutral ligands in molecular as well as in materials sciences. The efficiency and success of NHCs in diverse areas is essentially attributed to their persuasive stereoelectronics, in particular the potent σ-donor property. The NHCs with the carbene center at the unusual C4 (or C5) position, the so-called abnormal NHCs (aNHCs) or mesoionic carbenes (iMICs), are however superior σ-donors than C2-carbenes. Hence, iMICs have substantial potential in sustainable synthesis and catalysis. The main obstacle in this direction is rather demanding synthetic accessibility of iMICs. The aim of this review article is to highlight recent advances, particularly by the author's research group, in accessing stable iMICs, quantifying their properties, and exploring their applications in synthesis and catalysis. In addition, the synthetic viability and use of vicinal C4,C5-anionic dicarbenes (ADCs), also based on an 1,3-imidazole framework, are presented. As will be apparent on following pages, iMICs and ADCs hold potentials in pushing the limit of classical NHCs by enabling access to conceptually new main-group heterocycles, radicals, molecular catalysts, ligands sets, and more.
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Affiliation(s)
- Rajendra S Ghadwal
- Molecular Inorganic Chemistry and Catalysis, Inorganic and Structural Chemistry, Center for Molecular Materials, Faculty of Chemistry, Universität Bielefeld, Universitätsstrasse 25, 33615, Bielefeld, Germany
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7
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Baschieri A, Mazzoni R, Cesari C, Zacchini S, Pecorari D, Sambri L. Ruthenium (0) Complexes with NHC Tetrazolylidene Ligands: Synthesis, Characterization and Reactivity. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2023.121472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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8
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Firsan S, Sivakumar V, Colacot TJ. Emerging Trends in Cross-Coupling: Twelve-Electron-Based L 1Pd(0) Catalysts, Their Mechanism of Action, and Selected Applications. Chem Rev 2022; 122:16983-17027. [PMID: 36190916 PMCID: PMC9756297 DOI: 10.1021/acs.chemrev.2c00204] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Indexed: 01/25/2023]
Abstract
Monoligated palladium(0) species, L1Pd(0), have emerged as the most active catalytic species in the cross-coupling cycle. Today, there are methods available to generate the highly active but unstable L1Pd(0) catalysts from stable precatalysts. While the size of the ligand plays an important role in the formation of L1Pd(0) during in situ catalysis, the latter can be precisely generated from the precatalyst by various technologies. Computational, kinetic, and experimental studies indicate that all three steps in the catalytic cycle─oxidative addition, transmetalation, and reductive elimination─contain monoligated Pd. The synthesis of precatalysts, their mode of activation, application studies in model systems, as well as in industry are discussed. Ligand parametrization and AI based data science can potentially help predict the facile formation of L1Pd(0) species.
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Affiliation(s)
- Sharbil
J. Firsan
- Science
and Lab Solutions−Chemistry, MilliporeSigma, 6000 North Teutonia Avenue, Milwaukee, Wisconsin53209, United States
| | - Vilvanathan Sivakumar
- Merck
Life Science Pvt Ltd, No-12, Bommasandra-Jigani Link Road, Industrial Area, Bangalore560100, India
| | - Thomas J. Colacot
- Science
and Lab Solutions−Chemistry, MilliporeSigma, 6000 North Teutonia Avenue, Milwaukee, Wisconsin53209, United States
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9
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Marín-Carrillo E, Valdés H, Hernández-Ortega S, Morales-Morales D. Novel Hybrid Phosphinite-Theophylline Ligands and their Pd(II) Complexes. Synthesis, Characterization and Catalytic Evaluation in Suzuki-Miyaura Couplings. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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10
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Illam PM, Tiwari CS, Rit A. Towards new coordination modes of 1,2,3-triazolylidene: controlled by the nature of the 1 st metalation in a heteroditopic bis-NHC ligand. Chem Sci 2022; 13:13387-13392. [PMID: 36507188 PMCID: PMC9682892 DOI: 10.1039/d2sc05024b] [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: 09/08/2022] [Accepted: 10/20/2022] [Indexed: 12/15/2022] Open
Abstract
An unusual effect of the nature of the first metal coordination of a heteroditopic N-heterocyclic carbene ligand (L2) towards the coordination behavior of 1,2,3-tzNHC is explored. The first metal coordination at the ImNHC site (complexes 3 and 4) was noted to substantially influence the electronics of the 1,2,3-triazolium moiety leading to an unprecedented chemistry of this MIC donor. Along this line, the RhIII/IrIII-orthometalation in complexes 4 makes the triazolium C4-H more downfield shifted than C5-H, whereas a reverse trend, although to a lesser extent, is observed in the case of the non-chelated PdII-coordination. This difference in behavior assisted us to achieve the selective activation of triazole C4/C5 positions, not observed before, as supported by the isolation of the homo- and hetero-bimetallic complexes, 5, 6 and 7-9via C5- and C4-metalation, respectively. Furthermore, the %V bur calculations eliminate any considerable steric influence and the DFT studies strongly support the selectivity observed during bimetalation.
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Affiliation(s)
| | | | - Arnab Rit
- Department of Chemistry, Indian Institute of Technology MadrasChennai 600036India
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11
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Thomas SR, Yang W, Morgan DJ, Davies TE, Li JJ, Fischer RA, Huang J, Dimitratos N, Casini A. Bottom-up Synthesis of Water-Soluble Gold Nanoparticles Stabilized by N-Heterocyclic Carbenes: From Structural Characterization to Applications. Chemistry 2022; 28:e202201575. [PMID: 35801389 PMCID: PMC9804724 DOI: 10.1002/chem.202201575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Indexed: 01/09/2023]
Abstract
N-heterocyclic carbenes (NHCs) have become attractive ligands for functionalizing gold nanoparticle surfaces with applications ranging from catalysis to biomedicine. Despite their great potential, NHC stabilized gold colloids (NHC@AuNPs) are still scarcely explored and further efforts should be conducted to improve their design and functionalization. Here, the 'bottom-up' synthesis of two water-soluble gold nanoparticles (AuNP-1 and AuNP-2) stabilized by hydrophilic mono- and bidentate NHC ligands is reported together with their characterization by various spectroscopic and analytical methods. The NPs showed key differences likely to be due to the selected NHC ligand systems. Transmission electron microscopy (TEM) images showed small quasi-spherical and faceted NHC@AuNPs of similar particle size (ca. 2.3-2.6 nm) and narrow particle size distribution, but the colloids featured different ratios of Au(I)/Au(0) by X-ray photoelectron spectroscopy (XPS). Furthermore, the NHC@AuNPs were supported on titania and fully characterized. The new NPs were studied for their catalytic activity towards the reduction of nitrophenol substrates, the reduction of resazurin and for their photothermal efficiency. Initial results on their application in photothermal therapy (PTT) were obtained in human cancer cells in vitro. The aforementioned reactions represent important model reactions towards wastewater remediation, bioorthogonal transformations and cancer treatment.
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Affiliation(s)
- Sophie R. Thomas
- Chair of Medicinal and Bioinorganic ChemistryDepartment of ChemistryTechnical University of MunichLichtenbergstrasse 485747GarchingGermany
| | - Wenjie Yang
- School of Chemical and Biomolecular EngineeringUniversity of SydneyNSW2006Australia
| | - David J. Morgan
- School of ChemistryCardiff UniversityMain Building, Park PlaceCardiffCF10 3ATU.K.
| | - Thomas E. Davies
- School of ChemistryCardiff UniversityMain Building, Park PlaceCardiffCF10 3ATU.K.
| | - Jiao Jiao Li
- Kolling InstituteFaculty of Medicine and HealthUniversity of SydneySt LeonardsNSW2065Australia
| | - Roland A. Fischer
- Chair of Inorganic and Metal–Organic ChemistryDepartment of ChemistryTechnical University of MunichLichtenbergstrasse 485747GarchingGermany
| | - Jun Huang
- School of Chemical and Biomolecular EngineeringUniversity of SydneyNSW2006Australia
| | - Nikolaos Dimitratos
- Department of Industrial Chemistry “Toso Montanari” Universita' degli Studi di BolognaViale Risorgimento40136BolognaItaly,Center for Chemical Catalysis - C3, Alma Mater Studiorum Università di BolognaViale Risorgimento 440136BolognaItaly
| | - Angela Casini
- Chair of Medicinal and Bioinorganic ChemistryDepartment of ChemistryTechnical University of MunichLichtenbergstrasse 485747GarchingGermany,Munich Data Science Institute (MDSI)Technical University of MunichWalther-von-Dyck Strasse 1085748GarchingGermany
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12
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Hong SB, Liang LC. Aqueous Suzuki couplings mediated by a hydrophobic catalyst. RSC Adv 2022; 12:28862-28866. [PMID: 36320549 PMCID: PMC9552190 DOI: 10.1039/d2ra05230j] [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: 08/20/2022] [Accepted: 10/04/2022] [Indexed: 11/29/2022] Open
Abstract
The catalytic activity of [(Ph2P-o-C6H4)2N]PdCl in aerobic aqueous Suzuki couplings is described. Though hydrophobic, this molecular catalyst is competent in cross-coupling reactions of arylboronic acids with a variety of electronically activated, unactivated, and deactivated aryl iodides, bromides, and chlorides upon heating in aqueous solutions under aerobic conditions to give biphenyl derivatives without the necessity of amphiphiles even in the presence of an excess amount of mercury.
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Affiliation(s)
- Sheng-Bo Hong
- Department of Chemistry, National Sun Yat-sen UniversityKaohsiung 80424Taiwan
| | - Lan-Chang Liang
- Department of Chemistry, National Sun Yat-sen UniversityKaohsiung 80424Taiwan,Department of Medicinal and Applied Chemistry, Kaohsiung Medical UniversityKaohsiung 80708Taiwan,School of Pharmacy, Kaohsiung Medical UniversityKaohsiung 80708Taiwan
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13
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Hsu TY, Hsu YM, Lai YT, Lin HP, Wang YY, Lu TJ, LEE DS. A new family of indolyl‐type benzimidazolium salts applied in Suzuki−Miyaura coupling of aryl chlorides. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tung-Yu Hsu
- National Chung Hsing University Chemistry TAIWAN
| | - Yu-Ming Hsu
- National Chung Hsing University Chemistry TAIWAN
| | - Yu-Ting Lai
- National Chung Hsing University Chemistry TAIWAN
| | - Huan-Pin Lin
- National Chung Hsing University Chemistry TAIWAN
| | | | - Ta-Jung Lu
- National Chung Hsing University Chemistry TAIWAN
| | - Dong-Sheng LEE
- National Chung Hsing University Department of Chemistry 145 Xingda Rd.South Dist. 40227 Taichung TAIWAN
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14
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Wang Z, Chen X, Hu Y, Li H, Yang YF, Liu Y, Jin H, Zhou B. Deconstructive isomerization of azetidinols via C-C bond cleavage enabled by N-heterocyclic carbene (NHC) catalysis. Chem Commun (Camb) 2022; 58:9294-9297. [PMID: 35904428 DOI: 10.1039/d2cc03104c] [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
Herein, we describe an N-heterocyclic carbene (NHC)-catalyzed deconstructive isomerization of azetidinols via an inert C-C bond cleavage. It provides a direct and supplementary pathway to access α-amino ketone and oxazol-2-one derivatives in moderate to good yields. DFT calculation supports the proposed mechanism in which NHC undergoes a concerted proton transfer and ring-opening process. This reaction features non-metal catalysis, simple reaction operation, excellent regioselectivity and gram-scale synthesis.
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Affiliation(s)
- Zhen Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Xue Chen
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Yunayuan Hu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Huiling Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Yun-Fang Yang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Yunkui Liu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Hongwei Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Bingwei Zhou
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
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15
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Carrasco CJ, Montilla F, Álvarez E, Calderón-Montaño JM, López-Lázaro M, Galindo A. Chirality influence on the cytotoxic properties of anionic chiral bis(N-heterocyclic carbene)silver complexes. J Inorg Biochem 2022; 235:111924. [PMID: 35841721 DOI: 10.1016/j.jinorgbio.2022.111924] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/20/2022] [Accepted: 07/04/2022] [Indexed: 11/29/2022]
Abstract
Complexes Na3[Ag(NHCR)2], 2a-e and 2b'-c', where NHCR is a N-heterocyclic carbene of the 2,2'-(1H-2λ3,3λ4-imidazole-1,3-diyl)dicarboxylate type, were prepared by treatment of compounds HLR, 1a-e and 1b'-c' (2-(1-(carboxyalkyl)-1H-imidazol-3-ium-3-yl)carboxylate), with silver oxide in the presence of aqueous sodium hydroxide. They were characterized by analytical, spectroscopic (infrared, IR, 1H and 13C nuclear magnetic resonance, NMR, and circular dichroism) and X-ray methods (2a). In the solid state, the anionic part of complex 2a, [Ag(NHCH)2]3-, shows a linear disposition of Ccarbene-Ag-Ccarbene atoms and an eclipsed conformation of the two NHC ligands. The proposed bis(NHC) nature of the silver complexes was maintained in solution according to NMR and density functional theory (DFT) calculations. The cytotoxic activity of compounds 2 was evaluated against four cancer cell lines and one non-cancerous cell line and several structure-activity correlations were found for these complexes. For instance, the activity decreased when the bulkiness of the R alkyl group in Na3[Ag(NHCR)2] increased. More interesting is the detected chirality-anticancer relationship, where complexes Na3[Ag{(S,S)-NHCR}2] (R = Me, 2b; iPr, 2c) showed better anticancer activity than those of their enantiomeric derivatives Na3[Ag{(R,R)-NHCR}2] (R = Me, 2b'; iPr, 2c').
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Affiliation(s)
- Carlos J Carrasco
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Sevilla, Aptdo 1203, 41071 Sevilla, Spain
| | - Francisco Montilla
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Sevilla, Aptdo 1203, 41071 Sevilla, Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, 41092 Sevilla, Spain
| | | | - Miguel López-Lázaro
- Departamento de Farmacología, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - Agustín Galindo
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Sevilla, Aptdo 1203, 41071 Sevilla, Spain.
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Hobsteter A, Badajoz MA, Lo Fiego MJ, Silbestri GF. Galactopyranoside-Substituted N-Heterocyclic Carbene Gold(I) Complexes: Synthesis, Stability, and Catalytic Applications to Alkyne Hydration. ACS OMEGA 2022; 7:21788-21799. [PMID: 35785281 PMCID: PMC9245165 DOI: 10.1021/acsomega.2c01878] [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: 03/28/2022] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
A series of novel gold(I) complexes bearing galactopyranoside-based N-heterocyclic carbene ligands have been synthesized via transmetalation of the corresponding Ag(I) complex. Gold(I) complexes have been characterized by NMR, Fourier transform infrared (FTIR), and elemental analysis. An exhaustive NMR analysis shows that the complexes are not stable when hydroxyl groups are deprotected. Catalytic studies, using the alkyne hydration as a model reaction, indicate that the synthesized complexes are active and reusable.
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Partl G, Rauter M, Fliri L, Gelbrich T, Kreutz C, Müller T, Kahlenberg V, Nerdinger S, Schottenberger H. A Fluoroponytailed NHC-Silver Complex Formed from Vinylimidazolium/AgNO 3 under Aqueous-Ammoniacal Conditions. Molecules 2022; 27:4137. [PMID: 35807382 PMCID: PMC9268170 DOI: 10.3390/molecules27134137] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 11/16/2022] Open
Abstract
3-(1H,1H,2H,2H-Perfluorooctyl)-1-vinylimidazolium chloride [2126844-17-3], a strong fluorosurfactant with remarkably high solubility in water, was expediently converted into the respective doubly NHC-complexed silver salt with nitrate as counter ion in quantitative yield. Due to its vinyl substituents, [bis(3-(1H,1H,2H,2H-perfluorooctyl)-1-vinylimidazol-2-ylidene)silver(I)] nitrate, Ag(FNHC)2NO3, represents a polymerizable N-heterocyclic carbene transfer reagent, thus potentially offering simple and robust access to coordination polymers with crosslinking metal bridges. The compound was characterized by infrared and NMR spectroscopy, mass spectrometry as well as elemental analysis, and supplemented by X-ray single-crystal structure determination. It crystallizes in the monoclinic crystal system in the space group P21/c. With 173.3°, the geometry of the Ag-carbene bridge deviates slightly from linearity. The disordered perfluoroalkyl side chains exhibit a helical conformation.
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Affiliation(s)
- Gabriel Partl
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, CCB, Innrain 80-82, 6020 Innsbruck, Austria;
| | - Marcus Rauter
- Infineon Technologies AG, Siemensstrasse 2, 9500 Villach, Austria;
| | - Lukas Fliri
- Department of Bioproducts and Biosystems, Aalto University, P.O. Box 16300, 00076 Aalto, Finland;
| | - Thomas Gelbrich
- Institute of Pharmacy, Leopold Franzens University of Innsbruck, Innrain 52c, 6020 Innsbruck, Austria;
| | - Christoph Kreutz
- Institute Organic Chemistry, University of Innsbruck, CCB, Innrain 80-82, 6020 Innsbruck, Austria; (C.K.); (T.M.)
| | - Thomas Müller
- Institute Organic Chemistry, University of Innsbruck, CCB, Innrain 80-82, 6020 Innsbruck, Austria; (C.K.); (T.M.)
| | - Volker Kahlenberg
- Institute of Mineralogy & Petrography, University of Innsbruck, Innrain 52, 6020 Innsbruck, Austria;
| | | | - Herwig Schottenberger
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, CCB, Innrain 80-82, 6020 Innsbruck, Austria;
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Song Y, Zhan J, Li M, Zhao H, Shi G, Wu M, Fang H. Enhancement of the Water Affinity of Histidine by Zinc and Copper Ions. Int J Mol Sci 2022; 23:ijms23073957. [PMID: 35409317 PMCID: PMC8999569 DOI: 10.3390/ijms23073957] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/27/2022] [Accepted: 03/30/2022] [Indexed: 02/04/2023] Open
Abstract
Histidine (His) is widely involved in the structure and function of biomolecules. Transition-metal ions, such as Zn2+ and Cu2+, widely exist in biological environments, and they are crucial to many life-sustaining physiological processes. Herein, by employing density function calculations, we theoretically show that the water affinity of His can be enhanced by the strong cation–π interaction between His and Zn2+ and Cu2+. Further, the solubility of His is experimentally demonstrated to be greatly enhanced in ZnCl2 and CuCl2 solutions. The existence of cation–π interaction is demonstrated by fluorescence, ultraviolet (UV) spectroscopy and nuclear magnetic resonance (NMR) experiments. These findings are of great importance for the bioavailability of aromatic drugs and provide new insight for understanding the physiological functions of transition metal ions.
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Affiliation(s)
- Yongshun Song
- School of Physics, East China University of Science and Technology, Shanghai 200237, China;
| | - Jing Zhan
- Shanghai Applied Radiation Institute, Shanghai University, Shanghai 200444, China; (J.Z.); (M.L.); (G.S.)
| | - Minyue Li
- Shanghai Applied Radiation Institute, Shanghai University, Shanghai 200444, China; (J.Z.); (M.L.); (G.S.)
| | - Hongwei Zhao
- Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Guosheng Shi
- Shanghai Applied Radiation Institute, Shanghai University, Shanghai 200444, China; (J.Z.); (M.L.); (G.S.)
| | - Minghong Wu
- Shanghai Applied Radiation Institute, Shanghai University, Shanghai 200444, China; (J.Z.); (M.L.); (G.S.)
- Correspondence: (M.W.); (H.F.)
| | - Haiping Fang
- School of Physics, East China University of Science and Technology, Shanghai 200237, China;
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
- Correspondence: (M.W.); (H.F.)
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New bifunctional amphiphilic oxyethylimidazolium derivatives of calix[4]arene containing alkynyl/azide fragments: regularities of aggregation and polymerization under azide/alkyne cycloaddition conditions. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3386-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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21
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Ryzhakov D, Beillard A, Le bideau F, Al-Shuaeeb RAA, Alami M, Bantreil X, Bonnemoy A, Gautier A, Lamaty F, Messaoudi S. Azoliums and Ag(I)‐N‐Heterocyclic Carbene Thioglycosides: synthesis, reactivity and bioactivity. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Audrey Beillard
- Université de Montpellier: Universite de Montpellier Chemistry FRANCE
| | - Franck Le bideau
- Universite Paris-Saclay Chemistry 5 Rue J. B. Clément, Faculté de PharmacieChâtenay Malabry 92296 Châtenay Malabry FRANCE
| | | | - Mouad Alami
- Paris-Saclay University Faculty of Pharmacy: Universite Paris-Saclay Faculte de Pharmacie Chemistry 5 Rue J. B. Clément, Faculté de PharmacieChâtenay Malabry 92296 Châtenay Malabry FRANCE
| | - Xavier Bantreil
- Montpellier University: Universite de Montpellier chemistry FRANCE
| | - Aurore Bonnemoy
- Institute of Chemistry of Clermont-Ferrand: Institut de Chimie de Clermont-Ferrand chemistry FRANCE
| | | | | | - Samir Messaoudi
- Pharmacy faculty BIOCIS UMR 8076 Chemistry J. B. Clement 92296 Chatenay Malabry FRANCE
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García-Zaragoza A, Cerezo-Navarrete C, Mollar-Cuni A, Oña-Burgos P, Mata JA, Corma A, Martínez-Prieto LM. Tailoring graphene-supported Ru nanoparticles by functionalization with pyrene-tagged N-heterocyclic carbenes. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02063c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Controlling the reactivity and stability of graphene-supported Ru NPs by modifying their surface with pyrene-tagged N-heterocyclic carbene ligands.
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Affiliation(s)
- Adrián García-Zaragoza
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos S/N 46022, Valencia, Spain
| | - Christian Cerezo-Navarrete
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos S/N 46022, Valencia, Spain
| | - Andrés Mollar-Cuni
- Institute of Advanced Materials (INAM), Universitat Jaume I, Avda. Sos Baynat S/N 12006, Castellón, Spain
| | - Pascual Oña-Burgos
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos S/N 46022, Valencia, Spain
| | - Jose A. Mata
- Institute of Advanced Materials (INAM), Universitat Jaume I, Avda. Sos Baynat S/N 12006, Castellón, Spain
| | - Avelino Corma
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos S/N 46022, Valencia, Spain
| | - Luis M. Martínez-Prieto
- ITQ, Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos S/N 46022, Valencia, Spain
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Zámbó GG, Schlagintweit JF, Reich RM, Kühn FE. Organometallic 3d transition metal NHC complexes in oxidation catalysis. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00127f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of processes for the selective oxidation of hydrocarbons is a major focus in catalysis research. Making this process simultaneously environmentally friendly is still challenging. 3d transition metals are...
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Cui L, Hu Y, Guo S. Ruthenium(II) complexes bearing chelating Carboxylate-anchored normal and abnormal Carbenes: Synthesis, characterizations and catalytic applications. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Flores JC, Silbestri GF, de Jesús E. Water-soluble transition-metal complexes with hydrophilic N-heterocyclic carbene ligands for aqueous-phase applications. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2022. [DOI: 10.1016/bs.adomc.2022.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Phosphonate functionalized N-heterocyclic carbene Pd(II) complexes as efficient catalysts for Suzuki-Miyaura cross coupling reaction. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122067] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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Illam PM, Singh VK, Priya, Rit A. Modulating the electronics of orthometalated RuII-NHC complexes via substitution patterns or NHC donors: Studies towards the impacts in catalysis. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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28
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Lenis-Rojas OA, Cordeiro S, Horta-Meireles M, Fernández JAA, Fernández Vila S, Rubiolo JA, Cabezas-Sainz P, Sanchez L, Fernandes AR, Royo B. N-Heterocyclic Carbene Iron Complexes as Anticancer Agents: In Vitro and In Vivo Biological Studies. Molecules 2021; 26:molecules26185535. [PMID: 34577006 PMCID: PMC8470334 DOI: 10.3390/molecules26185535] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/03/2021] [Accepted: 09/09/2021] [Indexed: 12/04/2022] Open
Abstract
Cisplatin and its derivatives are commonly used in chemotherapeutic treatments of cancer, even though they suffer from many toxic side effects. The problems that emerge from the use of these metal compounds led to the search for new complexes capable to overcome the toxic side effects. Here, we report the evaluation of the antiproliferative activity of Fe(II) cyclopentadienyl complexes bearing n-heterocyclic carbene ligands in tumour cells and their in vivo toxicological profile. The in vitro antiproliferative assays demonstrated that complex Fe1 displays the highest cytotoxic activity both in human colorectal carcinoma cells (HCT116) and ovarian carcinoma cells (A2780) with IC50 values in the low micromolar range. The antiproliferative effect of Fe1 was even higher than cisplatin. Interestingly, Fe1 showed low in vivo toxicity, and in vivo analyses of Fe1 and Fe2 compounds using colorectal HCT116 zebrafish xenograft showed that both reduce the proliferation of human HCT116 colorectal cancer cells in vivo.
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Affiliation(s)
- Oscar A. Lenis-Rojas
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Av. da República, 2780-157 Oeiras, Portugal;
- Correspondence: (O.A.L.-R.); (A.R.F.); (B.R.)
| | - Sandra Cordeiro
- UCIBIO, Departamento Ciências da Vida, NOVA School of Science and Technology, NOVA University, Campus de Caparica, 2829-516 Caparica, Portugal;
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University, 2819-516 Caparica, Portugal
| | - Marta Horta-Meireles
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Av. da República, 2780-157 Oeiras, Portugal;
| | - Jhonathan Angel Araujo Fernández
- Departamento de Zoología Genética y Antropología Física, Facultad de Veterinaria, Universidad de Santiago de Compostela, Campus de Lugo, 27002 Lugo, Spain; (J.A.A.F.); (S.F.V.); (J.A.R.); (P.C.-S.); (L.S.)
- Laboratory of Zebrafish, Department of Medical Genetics and Genomic Medicine—School of Medical Sciences, University of Campinas (UNICAMP), Campinas 13083-970, SP, Brazil
| | - Sabela Fernández Vila
- Departamento de Zoología Genética y Antropología Física, Facultad de Veterinaria, Universidad de Santiago de Compostela, Campus de Lugo, 27002 Lugo, Spain; (J.A.A.F.); (S.F.V.); (J.A.R.); (P.C.-S.); (L.S.)
| | - Juan Andrés Rubiolo
- Departamento de Zoología Genética y Antropología Física, Facultad de Veterinaria, Universidad de Santiago de Compostela, Campus de Lugo, 27002 Lugo, Spain; (J.A.A.F.); (S.F.V.); (J.A.R.); (P.C.-S.); (L.S.)
- Facultad de Ciencias Bioquímicas y Farmacéuticas-Centro Científico y Tecnológico Acuario del Río Paraná, Universidad Nacional de Rosario, Rosario 2000, Argentina
| | - Pablo Cabezas-Sainz
- Departamento de Zoología Genética y Antropología Física, Facultad de Veterinaria, Universidad de Santiago de Compostela, Campus de Lugo, 27002 Lugo, Spain; (J.A.A.F.); (S.F.V.); (J.A.R.); (P.C.-S.); (L.S.)
| | - Laura Sanchez
- Departamento de Zoología Genética y Antropología Física, Facultad de Veterinaria, Universidad de Santiago de Compostela, Campus de Lugo, 27002 Lugo, Spain; (J.A.A.F.); (S.F.V.); (J.A.R.); (P.C.-S.); (L.S.)
- Preclinical Animal Models Group, Health Research Institute of Santiago de Compostela (IDIS), 5706 Santiago de Compostela, Spain
| | - Alexandra R. Fernandes
- UCIBIO, Departamento Ciências da Vida, NOVA School of Science and Technology, NOVA University, Campus de Caparica, 2829-516 Caparica, Portugal;
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University, 2819-516 Caparica, Portugal
- Correspondence: (O.A.L.-R.); (A.R.F.); (B.R.)
| | - Beatriz Royo
- ITQB NOVA, Instituto de Tecnologia Química e Biológica António Xavier, Av. da República, 2780-157 Oeiras, Portugal;
- Correspondence: (O.A.L.-R.); (A.R.F.); (B.R.)
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Wróblewska A, Lauriol G, Mlostoń G, Bantreil X, Lamaty F. Expedient synthesis of NOxy-Heterocyclic Carbenes (NOHC) ligands and metal complexes using mechanochemistry. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121914] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Marichev KO, Patil SA, Patil SA, Heras Martinez HM, Bugarin A. N-heterocyclic carbene metal complexes as therapeutic agents: a patent review. Expert Opin Ther Pat 2021; 32:47-61. [PMID: 34365884 DOI: 10.1080/13543776.2021.1965992] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Besides the well-established catalytic, synthetic and materials related applications of N-heterocyclic carbene (NHC) metal complexes, their use as therapeutics deserves a special attention. Many literature reports indicate that their bioactivity is superior to other organometallic compounds. The main focus of patent disclosures in this area is the elucidation of anticancer and antimicrobial activities of NHC transition metal complexes. Nonetheless, a variety of other biological activities have been reported in non-patent literature to date. AREA COVERED Patent literature on NHC metal complexes with focus on their therapeutic applications and relationship structure-biological activity disclosed since the first issued patent (2010) up to now (2021). The information was collected from publicly available data sources (e.g. Chemical Abstracts, MedLine, Reaxys, and SciFinder). EXPERT OPINION Although the first reports on biological applications of NHC metal complexes originate in 2000s, the greatest progress in this area was made only in the past decade. A growing number of patent disclosures indicates that structural design of new NHC metal complexes is crucial for their successful use in both medicine and biochemistry. In the next few years, we expect to see more stable and effective NHC metal complexes as potential therapeutic agents and perhaps in clinical trials.
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Affiliation(s)
| | - Siddappa A Patil
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Ramanagaram, Bangalore, India
| | - Shivaputra A Patil
- Pharmaceutical Sciences Department, College of Pharmacy, Rosalind Franklin University of Medicine & Science, North Chicago, IL, USA
| | | | - Alejandro Bugarin
- Department of Chemistry & Physics, Florida Gulf Coast University, Fort Myers, FL, USA
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Udvardy A, Joó F, Kathó Á. Synthesis and catalytic applications of Ru(II)-phosphaurotropine complexes with the use of simple water-soluble Ru(II)-precursors. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213871] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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32
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Meng Q, Zhang H, Chen H, Teng Q. Ammonium‐Anchored Palladium‐NHC Complex on Polystyrene Resin: A Highly Reactive Catalyst for the Mizoroki‐Heck Reaction**. ChemistrySelect 2021. [DOI: 10.1002/slct.202100968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qi Meng
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Huimin Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Haiqun Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Qiaoqiao Teng
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
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Hu Y, Wang Z, Luo H, Jin H, Liu Y, Zhou B. NHC-catalyzed Truce-Smiles rearrangement of N-aryl methacrylamides for the synthesis of trans-cinnamides. Org Biomol Chem 2021; 19:3834-3837. [PMID: 33949593 DOI: 10.1039/d1ob00443c] [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
Herein we describe a NHC-catalyzed Truce-Smiles rearrangement of N-aryl methacrylamides which enables the cleavage of an inert aryl C-N bond. A range of trans-cinnamides could be obtained by the direct construction of a C(aryl)-C(alkenyl) bond and functional groups such as Br, Cl, CN, and pyridinyl are compatible with NHC catalysis. The reaction features high atom-economy, transition-metal free catalysis, and easily available substrates.
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Affiliation(s)
- Yuanyuan Hu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Zhen Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Honggen Luo
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Hongwei Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Yunkui Liu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Bingwei Zhou
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.
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Cingolani A, Zanotti V, Cesari C, Ferri M, Mazzocchetti L, Benelli T, Merighi S, Giorgini L, Mazzoni R. Synthesis of functionalized iron N-heterocyclic carbene complexes and their potential application as flame behavior modifier in cross linked epoxy resins. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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N-Heterocyclic carbenes as “smart” gold nanoparticle stabilizers: State-of-the art and perspectives for biomedical applications. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121743] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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36
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Bär SI, Gold M, Schleser SW, Rehm T, Bär A, Köhler L, Carnell LR, Biersack B, Schobert R. Guided Antitumoural Drugs: (Imidazol-2-ylidene)(L)gold(I) Complexes Seeking Cellular Targets Controlled by the Nature of Ligand L. Chemistry 2021; 27:5003-5010. [PMID: 33369765 PMCID: PMC7986617 DOI: 10.1002/chem.202005451] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Indexed: 01/21/2023]
Abstract
Three [1,3-diethyl-4-(p-methoxyphenyl)-5-(3,4,5-trimethoxyphenyl)imidazol-2-ylidene](L)gold(I) complexes, 4 a (L=Cl), 5 a (L=PPh3 ), and 6 a (L=same N-heterocyclic carbene (NHC)), and their fluorescent [4-(anthracen-9-yl)-1,3-diethyl-5-phenylimidazol-2-ylidene](L)gold(I) analogues, 4 b, 5 b, and 6 b, respectively, were studied for their localisation and effects in cancer cells. Despite their identical NHC ligands, the last three accumulated in different compartments of melanoma cells, namely, the nucleus (4 b), mitochondria (5 b), or lysosomes (6 b). Ligand L was also more decisive for the site of accumulation than the NHC ligand because the couples 4 a/4 b, 5 a/5 b, and 6 a/6 b, carrying different NHC ligands, afforded similar results in cytotoxicity tests, and tests on targets typically found at their sites of accumulation, such as DNA in nuclei, reactive oxygen species and thioredoxin reductase in mitochondria, and lysosomal membranes. Regardless of the site of accumulation, cancer cell apoptosis was eventually induced. The concept of guiding a bioactive complex fragment to a particular subcellular target by secondary ligand L could reduce unwanted side effects.
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Affiliation(s)
- Sofia I. Bär
- Organic Chemistry LaboratoryUniversity BayreuthUniversitaetsstr. 3095447BayreuthGermany
| | - Madeleine Gold
- Organic Chemistry LaboratoryUniversity BayreuthUniversitaetsstr. 3095447BayreuthGermany
| | - Sebastian W. Schleser
- Organic Chemistry LaboratoryUniversity BayreuthUniversitaetsstr. 3095447BayreuthGermany
| | - Tobias Rehm
- Organic Chemistry LaboratoryUniversity BayreuthUniversitaetsstr. 3095447BayreuthGermany
| | - Alexander Bär
- Organic Chemistry LaboratoryUniversity BayreuthUniversitaetsstr. 3095447BayreuthGermany
| | - Leonhard Köhler
- Organic Chemistry LaboratoryUniversity BayreuthUniversitaetsstr. 3095447BayreuthGermany
| | - Lucas R. Carnell
- Organic Chemistry LaboratoryUniversity BayreuthUniversitaetsstr. 3095447BayreuthGermany
| | - Bernhard Biersack
- Organic Chemistry LaboratoryUniversity BayreuthUniversitaetsstr. 3095447BayreuthGermany
| | - Rainer Schobert
- Organic Chemistry LaboratoryUniversity BayreuthUniversitaetsstr. 3095447BayreuthGermany
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37
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Liu Q, Zhang X, Zhao Z, Li X, Zhang W. Synthesis of
N
‐Heterocyclic
Carbine Silver(I) and Palladium(
II
) Complexes with Acylated Piperazine Linker and Catalytic Activity in Three Types of C—C Coupling Reactions. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000237] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Qingxiang Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University Tianjin 300387 China
| | - Xiantao Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University Tianjin 300387 China
| | - Zhixiang Zhao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University Tianjin 300387 China
| | - Xinying Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University Tianjin 300387 China
| | - Wei Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University Tianjin 300387 China
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38
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Lamb JR, Brown CM, Johnson JA. N-Heterocyclic carbene-carbodiimide (NHC-CDI) betaine adducts: synthesis, characterization, properties, and applications. Chem Sci 2021; 12:2699-2715. [PMID: 34164037 PMCID: PMC8179359 DOI: 10.1039/d0sc06465c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 01/18/2021] [Indexed: 11/21/2022] Open
Abstract
N-Heterocyclic carbenes (NHCs) are an important class of reactive organic molecules used as ligands, organocatalysts, and σ-donors in a variety of electroneutral ylide or betaine adducts with main-group compounds. An emerging class of betaine adducts made from the reaction of NHCs with carbodiimides (CDIs) form zwitterionic amidinate-like structures with tunable properties based on the highly modular NHC and CDI scaffolds. The adduct stability is controlled by the substituents on the CDI nitrogens, while the NHC substituents greatly affect the configuration of the adduct in the solid state. This Perspective is intended as a primer to these adducts, touching on their history, synthesis, characterization, and general properties. Despite the infancy of the field, NHC-CDI adducts have been applied as amidinate-type ligands for transition metals and nanoparticles, as junctions in zwitterionic polymers, and to stabilize distonic radical cations. These applications and potential future directions are discussed.
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Affiliation(s)
- Jessica R Lamb
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA
| | - Christopher M Brown
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA
| | - Jeremiah A Johnson
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA
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39
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Burilov V, Garipova R, Mironova D, Sultanova E, Bogdanov I, Ocherednyuk E, Evtugyn V, Osin Y, Rizvanov I, Solovieva S, Antipin I. New poly-imidazolium–triazole particles by CuAAC cross-linking of calix[4]arene bis-azide/alkyne amphiphiles – a prospective support for Pd in the Mizoroki–Heck reaction. RSC Adv 2021; 11:584-591. [PMID: 35423062 PMCID: PMC8690898 DOI: 10.1039/d0ra09740c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 12/13/2020] [Indexed: 11/27/2022] Open
Abstract
A new imidazolium amphiphilic calix[4]arene with terminal acetylene fragments in the polar region was synthesized according to a two step scheme including regioselective chloromethylation of distal di-O-butyl calix[4]arene and subsequent interaction with 1-(hex-5-yn-1-yl)-1H-imidazole. The aggregation properties (CAC, the size and zeta potential of aggregates) of alkynyl calix[4]arene as well as of previously synthesized azidopropyl calix[4]arene and their 1 : 1 mixture were disclosed. Macrocycles with azide and alkyne fragments in the polar region were covalently cross-linked under CuAAC conditions in water. Successful cross-linking of molecules has been proven by IR spectroscopy and MALDI-TOF spectrometry. The obtained polymeric particles were studied both in solution and the solid state and the presence of submicron (∼200 nm) and micron (∼1–5 μm) particles with the prevalence of the latter was found. The average molecular weight of the polymer according to the static light scattering data was found to be 639 ± 44 kDa. The obtained polymeric imidazolium–triazole particles were tested as a support for Pd(OAc)2 in the Mizoroki–Heck reaction carried out in both organic and water media. In both solvents (especially in water) the addition of imidazolium–triazole particles to Pd(OAc)2 increased the conversion of 4-iodanisole. It was found that the ratio between the products (1,1 and 1,2-substituted ethylenes) changes drastically on going from DMF to water from 1 : 5 to 1 : 40 when using supported Pd(OAc)2. A new supramolecular approach to the formation of polytriazole–imidazolium particles, promising supports for catalysis, based on self-assembly of amphiphilic bis-azides and bis alkynes and their linkage using CuAAC is presented.![]()
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Affiliation(s)
| | | | | | | | | | | | - Vladimir Evtugyn
- Interdisciplinary Centre for Analytical Microscopy Kazan Federal University
- Kazan
- Russian Federation
| | - Yuri Osin
- Interdisciplinary Centre for Analytical Microscopy Kazan Federal University
- Kazan
- Russian Federation
| | - Ildar Rizvanov
- Arbuzov Institute of Organic and Physical Chemistry
- FRC Kazan Scientific Center of RAS
- Kazan
- Russian Federation
| | - Svetlana Solovieva
- Arbuzov Institute of Organic and Physical Chemistry
- FRC Kazan Scientific Center of RAS
- Kazan
- Russian Federation
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40
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Lin B, Zhang X, Zhou CY, Che CM. A PEGylated N-heterocyclic carbene-gold( i) complex: an efficient catalyst for cyclization reaction in water. Org Chem Front 2021. [DOI: 10.1039/d0qo01266a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A recyclable, PEGylated N-heterocyclic carbene(NHC)–gold(i) catalyst was synthesized, which exhibited high reactivity and regio-selectivity in the cyclization of alkynoic acids and cascade reaction of tryptamine and alkynoic acids in water.
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Affiliation(s)
- Bijin Lin
- State Key Laboratory of Synthetic Chemistry
- Department of Chemistry
- The University of Hong Kong
- China
- Department of Chemistry
| | - Xumu Zhang
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen 518000
- China
| | - Cong-Ying Zhou
- State Key Laboratory of Synthetic Chemistry
- Department of Chemistry
- The University of Hong Kong
- China
| | - Chi-Ming Che
- State Key Laboratory of Synthetic Chemistry
- Department of Chemistry
- The University of Hong Kong
- China
- Department of Chemistry
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41
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Wang Y, Zhang B, Guo S. Transition Metal Complexes Supported by N‐Heterocyclic Carbene‐Based Pincer Platforms: Synthesis, Reactivity and Applications. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000911] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yidan Wang
- Department of Chemistry Capital Normal University Beijing 100048 China
| | - Bo Zhang
- Department of Chemistry Capital Normal University Beijing 100048 China
| | - Shuai Guo
- Department of Chemistry Capital Normal University Beijing 100048 China
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42
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Redox Isomerization of Allylic Alcohols Catalyzed by New Water-Soluble Rh(I)-N-Heterocyclic Carbene Complexes. Catalysts 2020. [DOI: 10.3390/catal10111361] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
New water-soluble, N-heterocyclic carbene (NHC) or mixed NHC/tertiary phosphine complexes [RhCl(cod)(sSIMes)], Na2[Rh(bmim)(cod)(mtppts)], and [Rh(bmim)(cod)(pta)]BF4 were synthetized and applied for the first time as catalysts in redox isomerization of allylic alcohols in aqueous media. [RhCl(cod)(sSIMes)] (with added sulfonated triphenylphosphine) and [Rh(bmim)(cod)(pta)]BF4 catalyzed selectively the transformation of allylic alcohols to the corresponding ketones. The highest catalytic activity, TOF = 152 h−1 (TOF = (mol reacted substrate) × (mol catalyst × time)−1) was observed in redox isomerization of hept-1-en-3-ol ([S]/[cat] = 100). The catalysts were reused in the aqueous phase at least three times, with only modest loss of the catalytic activity and selectivity.
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43
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Traeger H, Kiebala DJ, Weder C, Schrettl S. From Molecules to Polymers-Harnessing Inter- and Intramolecular Interactions to Create Mechanochromic Materials. Macromol Rapid Commun 2020; 42:e2000573. [PMID: 33191595 DOI: 10.1002/marc.202000573] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/16/2020] [Indexed: 12/30/2022]
Abstract
The development of mechanophores as building blocks that serve as predefined weak linkages has enabled the creation of mechanoresponsive and mechanochromic polymer materials, which are interesting for a range of applications including the study of biological specimens or advanced security features. In typical mechanophores, covalent bonds are broken when polymers that contain these chemical motifs are exposed to mechanical forces, and changes of the optical properties upon bond scission can be harnessed as a signal that enables the detection of applied mechanical stresses and strains. Similar chromic effects upon mechanical deformation of polymers can also be achieved without relying on the scission of covalent bonds. The dissociation of motifs that feature directional noncovalent interactions, the disruption of aggregated molecules, and conformational changes in molecules or polymers constitute an attractive element for the design of mechanoresponsive and mechanochromic materials. In this article, it is reviewed how such alterations of molecules and polymers can be exploited for the development of mechanochromic materials that signal deformation without breaking covalent bonds. Recent illustrative examples are highlighted that showcase how the use of such mechanoresponsive motifs enables the visual mapping of stresses and damage in a reversible and highly sensitive manner.
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Affiliation(s)
- Hanna Traeger
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, CH-1700, Switzerland
| | - Derek J Kiebala
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, CH-1700, Switzerland
| | - Christoph Weder
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, CH-1700, Switzerland
| | - Stephen Schrettl
- Adolphe Merkle Institute, University of Fribourg, Chemin des Verdiers 4, Fribourg, CH-1700, Switzerland
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44
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Zhu X, Xu G, Chamoreau L, Zhang Y, Mouriès‐Mansuy V, Fensterbank L, Bistri‐Aslanoff O, Roland S, Sollogoub M. Permethylated NHC‐Capped α‐ and β‐Cyclodextrins (ICyD
Me
) Regioselective and Enantioselective Gold‐Catalysis in Pure Water. Chemistry 2020; 26:15901-15909. [DOI: 10.1002/chem.202001990] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/29/2020] [Indexed: 01/21/2023]
Affiliation(s)
- Xiaolei Zhu
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire (IPCM) UMR 8232 4, place Jussieu 75005 Paris France
| | - Guangcan Xu
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire (IPCM) UMR 8232 4, place Jussieu 75005 Paris France
| | - Lise‐Marie Chamoreau
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire (IPCM) UMR 8232 4, place Jussieu 75005 Paris France
| | - Yongmin Zhang
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire (IPCM) UMR 8232 4, place Jussieu 75005 Paris France
| | - Virginie Mouriès‐Mansuy
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire (IPCM) UMR 8232 4, place Jussieu 75005 Paris France
| | - Louis Fensterbank
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire (IPCM) UMR 8232 4, place Jussieu 75005 Paris France
| | - Olivia Bistri‐Aslanoff
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire (IPCM) UMR 8232 4, place Jussieu 75005 Paris France
| | - Sylvain Roland
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire (IPCM) UMR 8232 4, place Jussieu 75005 Paris France
| | - Matthieu Sollogoub
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire (IPCM) UMR 8232 4, place Jussieu 75005 Paris France
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45
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Organometallic Nanoparticles Ligated by NHCs: Synthesis, Surface Chemistry and Ligand Effects. Catalysts 2020. [DOI: 10.3390/catal10101144] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Over the last 20 years, the use of metallic nanoparticles (MNPs) in catalysis has awakened a great interest in the scientific community, mainly due to the many advantages of this kind of nanostructures in catalytic applications. MNPs exhibit the characteristic stability of heterogeneous catalysts, but with a higher active surface area than conventional metallic materials. However, despite their higher activity, MNPs present a wide variety of active sites, which makes it difficult to control their selectivity in catalytic processes. An efficient way to modulate the activity/selectivity of MNPs is the use of coordinating ligands, which transforms the MNP surface, subsequently modifying the nanoparticle catalytic properties. In relation to this, the use of N-heterocyclic carbenes (NHC) as stabilizing ligands has demonstrated to be an effective tool to modify the size, stability, solubility and catalytic reactivity of MNPs. Although NHC-stabilized MNPs can be prepared by different synthetic methods, this review is centered on those prepared by an organometallic approach. Here, an organometallic precursor is decomposed under H2 in the presence of non-stoichiometric amounts of the corresponding NHC-ligand. The resulting organometallic nanoparticles present a clean surface, which makes them perfect candidates for catalytic applications and surface studies. In short, this revision study emphasizes the great versatility of NHC ligands as MNP stabilizers, as well as their influence on catalysis.
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46
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Bauri S, Mallik A, Rit A. Naphthyl-Derived Orthometalated RuII-NHC Complexes: Effect of the NHC Donors and/or Substitution Pattern on Their Synthesis and Catalytic Activity. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00441] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Somnath Bauri
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Anirban Mallik
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Arnab Rit
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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47
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Krahfuss MJ, Radius U. N-Heterocyclic Silylenes as Metal–Metal Bridges and Metal–Halide Activators in Transition Metal Complexes. Inorg Chem 2020; 59:10976-10985. [DOI: 10.1021/acs.inorgchem.0c01462] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Mirjam J. Krahfuss
- Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Udo Radius
- Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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48
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Syntheses and Reactivity of New Zwitterionic Imidazolium Trihydridoborate and Triphenylborate Species. Molecules 2020; 25:molecules25143184. [PMID: 32668604 PMCID: PMC7397317 DOI: 10.3390/molecules25143184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/07/2020] [Accepted: 07/10/2020] [Indexed: 01/21/2023] Open
Abstract
In this study, four new N-(alkyl/aryl)imidazolium-borates were prepared, and their deprotonation reactions were investigated. Addition of BH3•THF to N-benzylimidazoles and N-mesitylimidazoles leads to imidazolium-trihydridoborate adducts. Ammonium tetraphenylborate reacts with benzyl- or mesityl-imidazoles with the loss of one of the phenyl groups yielding the corresponding imidazolium-triphenylborates. Their authenticity was confirmed by CHN analysis, 1H-NMR, 13C-NMR, 11B-NMR, FT-IR spectroscopy, and electrospray ionization mass spectrometry (ESI-MS). 3-Benzyl-imidazolium-1-yl)trihydridoborate, (HImBn)BH3, and (3-mesityl-imidazolium-1-yl)trihydridoborate, (HImMes)BH3, were also characterized by X-ray crystallography. The reactivity of these new compounds as carbene precursors in an effort to obtain borate-NHC complexes was investigated and a new carbene-borate adduct (which dimerizes) was obtained via a microwave-assisted procedure.
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49
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Stirring or milling? First synthesis of Rh(I)-(di-N-heterocyclic carbene) complexes both in solution and in a ball mill. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121308] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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50
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Heravi MM, Asadi S, Hoseini Chopani SM, Jaderi E. N
‐Heterocyclic Carbene–Palladium Complex onto Graphene Oxide and Poly (ethylene glycol) (PEG) Applied as Superior Catalyst for the Suzuki‐Miyaura Cross‐Coupling Reaction in Water. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5805] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Majid M. Heravi
- Faculty of Chemistry and Physics, Department of ChemistryAlzahra University Vanak Tehran Iran
| | - Shima Asadi
- Faculty of Chemistry and Physics, Department of ChemistryAlzahra University Vanak Tehran Iran
| | | | - Elham Jaderi
- Faculty of Chemistry and Physics, Department of ChemistryAlzahra University Vanak Tehran Iran
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