1
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Neshat A, Mousavizadeh Mobarakeh A, Yousefshahi MR, Varmaghani F, Dusek M, Eigner V, Kucerakova M. Introducing Novel Redox-Active Bis(phenolate) N-Heterocyclic Carbene Proligands: Investigation of Their Coordination to Fe(II)/Fe(III) and Their Catalytic Activity in Transfer Hydrogenation of Carbonyl Compounds. ACS OMEGA 2024; 9:25135-25145. [PMID: 38882110 PMCID: PMC11170717 DOI: 10.1021/acsomega.4c02602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 05/19/2024] [Accepted: 05/23/2024] [Indexed: 06/18/2024]
Abstract
A simple and efficient procedure for synthesizing novel pincer-type tridentate N-heterocyclic carbene bisphenolate ligands is reported. The synthesis of pincer proligands with N,N'-disubstituted imidazoline core, 5 and 6, was carried out via triethylorthoformate-promoted cyclization of either N,N'-bis(2-hydroxy-3,5-di-tert-butylphenyl)cyclohexanediamine, 3, or N,N'-bis(2-hydroxyphenyl)cyclohexanediamine, 4, in the presence of concentrated hydrochloric acid. Cyclic voltammograms of the ligands revealed ligand-centered redox activity, indicating the noninnocent nature of the ligands. The voltammograms of the ligands exhibit two successive one-electron oxidations and two consecutive one-electron reductions. In contrast to previous reports, the redox-active ligands in this study exhibit one-electron oxidation and reduction processes. All products were thoroughly characterized by using 1H and 13C NMR spectroscopy. The base-promoted deprotonation of the proligands and subsequent reaction with iron(II) and iron(III) chlorides yielded compounds 7 and 8. These compounds are binuclear and tetranuclear iron(III) complexes that do not contain carbene functional groups. Complexes 7 and 8 were characterized by using elemental analysis and single-crystal X-ray crystallography. At low catalyst loadings, both 7 and 8 exhibited high catalytic activity in the transfer hydrogenation of selected aldehydes and ketones.
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Affiliation(s)
- Abdollah Neshat
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), 444 Prof. Sobouti Blvd., Gava Zang, Zanjan 45137-66731, Iran
| | - Ali Mousavizadeh Mobarakeh
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), 444 Prof. Sobouti Blvd., Gava Zang, Zanjan 45137-66731, Iran
| | - Mohammad Reza Yousefshahi
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), 444 Prof. Sobouti Blvd., Gava Zang, Zanjan 45137-66731, Iran
| | - Fahimeh Varmaghani
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), 444 Prof. Sobouti Blvd., Gava Zang, Zanjan 45137-66731, Iran
| | - Michal Dusek
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 18221 Prague 8, The Czech Republic
| | - Vaclav Eigner
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 18221 Prague 8, The Czech Republic
| | - Monika Kucerakova
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 18221 Prague 8, The Czech Republic
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2
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Mechrouk V, Leforestier B, Chen W, Poblador-Bahamonde AI, Maisse-Francois A, Bellemin-Laponnaz S, Achard T. Diastereoselective Synthesis of Sulfoxide-Functionalized N-Heterocyclic Carbene Ruthenium Complexes: An Experimental and Computational Study. Chemistry 2024:e202401390. [PMID: 38862385 DOI: 10.1002/chem.202401390] [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: 04/09/2024] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 06/13/2024]
Abstract
The synthesis of sulfoxide-functionalized NHC ligand precursors were carried out by direct and mild oxidation from corresponding thioether precursors with high selectivity. Using these salts, a series of cationic [Ru(II)(η6-p-cymene)(NHC-SO)Cl]+ complexes were obtained in excellent yields by the classical Ag2O transmetallation route. NMR analyses suggested a chelate structure for the metal complexes, and X-ray diffractometry studies of complexes 4 b, 4 c, 4dBArF and 4 e unambiguously confirmed the preference for the bidentate (κ2-C,S) coordination mode of the NHC-SO ligands. Interestingly, only one diastereomer, in the form of an enantiomeric pair, was observed both in 1H NMR and in the solid state for the complexes. DFT calculations showed a possible intrinsic energy difference between the two pairs of diastereomer. The calculated energy barriers suggested that inversion of the sulfoxide is only plausible from the higher energy diastereomer together with bulky substituents. Inverting the configuration at the Ru center instead shows a lower and accessible activation barrier to provide the most stable diastereomer through thermodynamic control, consistent with the observation of a single species by 1H NMR as a pair of enantiomers. All these complexes catalyse the β-alkylation of secondary alcohols. Complex 4dPF6 bearing an NHC-functionalised S-Ad group has been further studied with different primary and secondary alcohols as substrates, showing high reactivity and high to moderate β-ol-selectivities.
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Affiliation(s)
- Victoria Mechrouk
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg-CNRS UMR 7504, 23 rue du Loess, BP 43, 67034, Strasbourg Cedex 2, France
| | - Baptiste Leforestier
- Department of Organic Chemistry, University of Geneva, 30 Quai Ernest Ansermet, 1211, Geneva, Switzerland
| | - Weighang Chen
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg-CNRS UMR 7504, 23 rue du Loess, BP 43, 67034, Strasbourg Cedex 2, France
| | | | - Aline Maisse-Francois
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg-CNRS UMR 7504, 23 rue du Loess, BP 43, 67034, Strasbourg Cedex 2, France
| | - Stéphane Bellemin-Laponnaz
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg-CNRS UMR 7504, 23 rue du Loess, BP 43, 67034, Strasbourg Cedex 2, France
| | - Thierry Achard
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg-CNRS UMR 7504, 23 rue du Loess, BP 43, 67034, Strasbourg Cedex 2, France
- New address: ISM2 (UMR 7313), Aix Marseille University, CNRS, Centrale Marseille, 52 Av. Escadrille Normandie Niemen, 13013, Marseille, France
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3
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Zhu J, Wang Y, Yao J, Li H. Switching the hydrogenation selectivity of urea derivatives via subtly tuning the amount and type of additive in the catalyst system. Chem Sci 2024; 15:2089-2099. [PMID: 38332828 PMCID: PMC10848806 DOI: 10.1039/d3sc05674k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 12/21/2023] [Indexed: 02/10/2024] Open
Abstract
Catalytic hydrogenation of urea derivatives is considered to be one of the most feasible methods for indirect reduction functionalization of CO2 and synthesis of valuable chemicals and fuels. Among value-added products, methylamines, formamides and methanol are highly attractive as important industrial raw materials. Herein, we report the highly selective catalytic hydrogenation of urea derivatives to N-monomethylamines for the first time. More importantly, two- and six-electron reduction products can be switched on/off by subtly tuning 0.5 mol% KOtBu (2% to 1.5%): when the molar ratio of KOtBu/(PPh3)3RuCl2 exceeds 2.0, it is favorable for the formation of two-electron reduction products (N-formamides), while when it is below 2.0, the two-electron reduction products are further hydrogenated to six-electron reduction products (N-monomethylamines and methanol). Furthermore, changing the type of additive can also regulate this interesting selectivity. Control experiments showed that this selectivity is achieved by regulating the acid-base environment of the reaction to control the fate of the common hemiaminal intermediate. A feasible mechanism is proposed based on mechanistic experiments and characterization. This method has the advantages of being simple, universal and highly efficient, and opens up a new synthesis strategy for the utilization of renewable carbon sources.
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Affiliation(s)
- Jun Zhu
- Department of Chemistry, ZJU-NHU United R&D Center, Zhejiang University Hangzhou 310027 China
| | - Yongtao Wang
- Department of Chemistry, ZJU-NHU United R&D Center, Zhejiang University Hangzhou 310027 China
| | - Jia Yao
- Department of Chemistry, ZJU-NHU United R&D Center, Zhejiang University Hangzhou 310027 China
| | - Haoran Li
- Department of Chemistry, ZJU-NHU United R&D Center, Zhejiang University Hangzhou 310027 China
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University Hangzhou 310027 China
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4
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Çakır S, Kavukcu SB, Şahin O, Günnaz S, Türkmen H. N-Alkylation and N-Methylation of Amines with Alcohols Catalyzed by Nitrile-Substituted NHC-Ir(III) and NHC-Ru(II) Complexes. ACS OMEGA 2023; 8:5332-5348. [PMID: 36816636 PMCID: PMC9933218 DOI: 10.1021/acsomega.2c06341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
A series of nitrile-modified N-heterocyclic carbene (NHC) complexes of Ir(III) (2a-e) and Ru(II) (3a-d) have been prepared by transmetallation of [IrCp*Cl2]2 and [RuCl2(p-cymene)]2 forming an in situ NHC-Ag complex. The structures of all complexes were characterized by 1H NMR, 13C NMR, and Fourier transform infrared (FT-IR) spectroscopies. And the structures were clearly elucidated by performing X-ray diffraction studies on 2b, 3a, and 3c single crystals. The complexes of NHC-Ir(III) (2a-e) and NHC-Ru(II) (3a-d) were investigated in the N-alkylation reaction of aniline derivatives with benzyl alcohols to form N-benzyl amines and in the N-methylation reaction of aniline derivatives with methanol. Both reactions were performed in solvent-free media. The Ir(III) complexes (2a-e) were found to perform essentially better than similar Ru(II) complexes (3a-d) in the N-alkylation and N-methylation reactions. Among the Ir(III) complexes (2a-e), the best results were obtained with 2b. The catalytic mechanisms of both reactions were revealed by 1H NMR study. Formation of Ir-hydride species was observed for both reactions. This new report provides useful information to evaluate the activity of complexes and the differences in sensitivity between the NHCs.
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Affiliation(s)
- Sinem Çakır
- Department
of Chemistry, Faculty of Science, Ege University, Bornova, 35100 Izmir, Türkiye
| | - Serdar Batıkan Kavukcu
- Department
of Chemistry, Faculty of Science, Ege University, Bornova, 35100 Izmir, Türkiye
| | - Onur Şahin
- Department
of Occupat Health & Safety, Faculty of Health Sciences, Sinop University, Sinop 57000, Türkiye
| | - Salih Günnaz
- Department
of Chemistry, Faculty of Science, Ege University, Bornova, 35100 Izmir, Türkiye
| | - Hayati Türkmen
- Department
of Chemistry, Faculty of Science, Ege University, Bornova, 35100 Izmir, Türkiye
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5
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Ru(II)-p-cymene complexes containing hydrazone ligands catalyzed α-alkylation of ketones and one-pot synthesis of bioactive quinolines and 3-(quinolin-2-yl)-2H-chromen-2-one. J Organomet Chem 2023. [DOI: 10.1016/j.jorganchem.2023.122622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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6
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Gayathri S, Viswanathamurthi P, Bertani R, Sgarbossa P. Ruthenium Complexes Bearing α-Diimine Ligands and Their Catalytic Applications in N-Alkylation of Amines, α-Alkylation of Ketones, and β-Alkylation of Secondary Alcohols. ACS OMEGA 2022; 7:33107-33122. [PMID: 36157732 PMCID: PMC9494662 DOI: 10.1021/acsomega.2c03200] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/24/2022] [Indexed: 06/16/2023]
Abstract
New Ru(II) complexes encompassing α-diimine ligands were synthesized by reacting ruthenium precursors with α-diimine hydrazones. The new ligands and Ru(II) complexes were analyzed by analytical and various spectroscopic methods. The molecular structures of L1 and complexes 1, 3, and 4 were determined by single-crystal XRD studies. The results reveal a distorted octahedral geometry around the Ru(II) ion for all complexes. Moreover, the new ruthenium complexes show efficient catalytic activity toward the C-N and C-C coupling reaction involving alcohols. Particularly, complex 3 demonstrates effective conversion in N-alkylation of aromatic amines, α-alkylation of ketones, and β-alkylation of alcohols.
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Affiliation(s)
- Sekar Gayathri
- Department
of Chemistry, Periyar University, Salem 636 011, Tamil Nadu, India
| | | | - Roberta Bertani
- Department
of Industrial Engineering, University of
Padova, via F. Marzoloa, Padova 35131, Italy
| | - Paolo Sgarbossa
- Department
of Industrial Engineering, University of
Padova, via F. Marzoloa, Padova 35131, Italy
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7
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Ranjan R, Chakraborty A, Kyarikwal R, Ganguly R, Mukhopadhyay S. A binuclear Cu(II) complex as an efficient photocatalyst for N-alkylation of aromatic amines. Dalton Trans 2022; 51:13288-13300. [PMID: 35983724 DOI: 10.1039/d2dt01771g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Visible-light driven photoreactions using transition metal complexes as catalysts are currently a research hotspot in developing environmentally friendly sustainable processes. To develop a potential copper-based photocatalyst, a binuclear Cu(II) complex has been synthesized using a Mannich base ligand viz. 2,4-dichloro-6-((4-(2-hydroxyethyl)piperazin-1-yl)methyl)phenol (H2L). The photocatalyst has been characterized using ESI-MS and single crystal X-ray diffraction. Under the irradiation of visible light, the catalyst can catalyze hydrogen auto-transfer in N-alkylated amine formation and benzyl alcohol oxidation reactions with excellent conversion. A plausible mechanistic pathway for catalytic reactions has been explored through ESI-MS spectrometric, UV-Vis spectroscopic and computational studies.
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Affiliation(s)
- Rishi Ranjan
- Department of Chemistry, School of Basic Sciences, Indian Institute of Technology Indore, Simrol, Indore 453552, India.
| | - Argha Chakraborty
- Department of Chemistry, School of Basic Sciences, Indian Institute of Technology Indore, Simrol, Indore 453552, India.
| | - Reena Kyarikwal
- Department of Chemistry, School of Basic Sciences, Indian Institute of Technology Indore, Simrol, Indore 453552, India.
| | | | - Suman Mukhopadhyay
- Department of Chemistry, School of Basic Sciences, Indian Institute of Technology Indore, Simrol, Indore 453552, India.
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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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Ritleng V, Michon C. Bidentate Donor-Functionalized N-Heterocyclic Carbenes: Valuable Ligands for Ruthenium-Catalyzed Transfer Hydrogenation. Molecules 2022; 27:molecules27154703. [PMID: 35897879 PMCID: PMC9329912 DOI: 10.3390/molecules27154703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/20/2022] [Accepted: 07/21/2022] [Indexed: 11/23/2022] Open
Abstract
Ruthenium complexes are by far the most studied compounds that catalyze hydrogen transfer reactions. In this review, we describe the use in this field of ruthenium complexes bearing bidentate donor-functionalized N-heterocyclic carbene ligands. The review specifically covers the application in transfer hydrogenations of (κ2-CNHC,Y)-ruthenacyclic compounds where the Y donor atom is a N, P, O, or S atom, and where the N-heterocyclic carbene ligand is a classical imidazol-2-ylidene, a benzimidazol-2-ylidene, a mesoionic 1,2,3-triazolylidene, or an imidazol-4-ylidene ligand. Tridentate donor-functionalized N-heterocyclic carbene complexes thus fall outside the scope of the review. Applications in (asymmetric) transfer hydrogenation of ketones, aldehydes, imines, alkenes, and nitrobenzene are discussed.
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10
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Tsui BTH, Sung MMH, Kinas J, Hahn FE, Morris RH. A Ruthenium Protic N-Heterocyclic Carbene Complex as a Precatalyst for the Efficient Transfer Hydrogenation of Aryl Ketones. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00228] [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]
Affiliation(s)
- Brian T. H. Tsui
- Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
| | - Molly M. H. Sung
- Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
| | - Jenny Kinas
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 30, Münster D-48149, Germany
| | - F. Ekkehardt Hahn
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 30, Münster D-48149, Germany
| | - Robert H. Morris
- Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
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11
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Podyacheva E, Afanasyev OI, Vasilyev DV, Chusov D. Borrowing Hydrogen Amination Reactions: A Complex Analysis of Trends and Correlations of the Various Reaction Parameters. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01133] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Evgeniya Podyacheva
- A.N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, Vavilova St. 28, Moscow 119991, Russian Federation
- National Research University Higher School of Economics, Miasnitskaya Str. 20, Moscow 101000, Russian Federation
| | - Oleg I. Afanasyev
- A.N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, Vavilova St. 28, Moscow 119991, Russian Federation
| | - Dmitry V. Vasilyev
- Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Egerlandstr. 3, 91058 Erlangen, Germany
| | - Denis Chusov
- A.N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, Vavilova St. 28, Moscow 119991, Russian Federation
- National Research University Higher School of Economics, Miasnitskaya Str. 20, Moscow 101000, Russian Federation
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12
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Ahmed J, Mandal SK. Phenalenyl Radical: Smallest Polycyclic Odd Alternant Hydrocarbon Present in the Graphene Sheet. Chem Rev 2022; 122:11369-11431. [PMID: 35561295 DOI: 10.1021/acs.chemrev.1c00963] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Phenalenyl, a zigzag-edged odd alternant hydrocarbon unit can be found in the graphene nanosheet. Hückel molecular orbital calculations indicate the presence of a nonbonding molecular orbital (NBMO), which originates from the linear combination of atomic orbitals (LCAO) arising from 13 carbon atoms of the phenalenyl molecule. Three redox states (cationic, neutral radical, and anionic) of the phenalenyl-based molecules were attributed to the presence of this NBMO. The cationic state can undergo two consecutive reductions to result in neutral radical and anionic states, stepwise, respectively. The phenalenyl-based radicals were found as crucial building blocks and attracted the attention of various research fields such as organic synthesis, material science, computation, and device physics. From 2012 onward, a strategy was devised using the cationic state of phenalenyl-based molecules and in situ generated phenalenyl radicals, which created a new domain of catalysis. The in situ generated phenalenyl radicals were utilized for the single electron transfer (SET) process resulting in redox catalysis. This emerging range of applications rejuvenates the more than six decades-old phenalenyl chemistry. This review captures such developments ranging from fundamental understanding to multidirectional applications of phenalenyl-based radicals.
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Affiliation(s)
- Jasimuddin Ahmed
- Department of Chemical Sciences, Indian Institute of Science Education and Research-Kolkata, Mohanpur 741246, India
| | - Swadhin K Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research-Kolkata, Mohanpur 741246, India
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13
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Half‐Sandwich Ruthenium Complexes Bearing Hemilabile κ
2
‐(
C
,
S
)−Thioether‐Functionalized NHC Ligands: Application to Amide Synthesis from Alcohol and Amine. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202101033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Moutaoukil Z, Serrano-Díez E, Collado IG, Jiménez-Tenorio M, Botubol-Ares JM. N-Alkylation of organonitrogen compounds catalyzed by methylene-linked bis-NHC half-sandwich ruthenium complexes. Org Biomol Chem 2022; 20:831-839. [PMID: 35018948 DOI: 10.1039/d1ob02214h] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An efficient ruthenium-catalyzed N-alkylation of amines, amides and sulfonamides has been developed employing novel pentamethylcyclopentadienylruthenium(II) complexes bearing the methylene linked bis(NHC) ligand bis(3-methylimidazol-2-ylidene)methane. The acetonitrile complex 2 has proven particularly effective with a broad range of substrates with low catalyst loading (0.1-2.5 mol%) and high functional group tolerance under mild conditions. A total of 52 N-alkylated organonitrogen compounds including biologically relevant scaffolds were synthesized from (hetero)aromatic and aliphatic amines, amides and sulfonamides using alcohols or diols as alkylating agents in up to 99% isolated yield, even on gram-scale reactions. In the case of sulfonamides, it is the first example of N-alkylation employing a transition-metal complex bearing NHC ligands.
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Affiliation(s)
- Zakaria Moutaoukil
- University of Cadiz, Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Torre Sur, 4° planta, 11510, Puerto Real, Cádiz.
| | - Emmanuel Serrano-Díez
- University of Cadiz, Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Torre Sur, 4° planta, 11510, Puerto Real, Cádiz.
| | - Isidro G Collado
- University of Cadiz, Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Torre Sur, 4° planta, 11510, Puerto Real, Cádiz.
| | - Manuel Jiménez-Tenorio
- University of Cadiz, Departamento de Ciencias de los Materiales e Ingeniería Metalúrgica y Química Inorgánica-INBIO, Facultad de Ciencias, Torre Norte, 1° planta, 11510, Puerto Real, Cádiz, Spain
| | - José Manuel Botubol-Ares
- University of Cadiz, Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Torre Sur, 4° planta, 11510, Puerto Real, Cádiz.
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15
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Liang Q, Song D. Syntheses and Reactivity of Piano-Stool Iron Complexes of Picolyl-Functionalized N-Heterocyclic Carbene Ligands. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Qiuming Liang
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Datong Song
- Davenport Chemical Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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16
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Prakasham AP, Ta S, Dey S, Ghosh P. One pot tandem dual CC and CO bond reductions in the β-alkylation of secondary alcohols with primary alcohols by ruthenium complexes of amido and picolyl functionalized N-heterocyclic carbenes. Dalton Trans 2021; 50:15640-15654. [PMID: 34673856 DOI: 10.1039/d1dt02849a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Two different classes of ruthenium complexes, namely, [1-mesityl-3-(2,6-Me2-phenylacetamido)-imidazol-2-ylidene]Ru(p-cymene)Cl (1c) and {[1-(pyridin-2-ylmethyl)-3-(2,6-Me2-phenyl)-imidazol-2-ylidene]Ru(p-cymene)Cl}Cl (2c), successfully catalyzed the one-pot tandem alcohol-alcohol coupling reactions of a variety of secondary and primary alcohols, in moderate to good yields of ca. 63-89%. The mechanistic investigation performed on two representative catalytic substrates, 1-phenylethanol and benzyl alcohol using the neutral ruthenium (1c) complex showed that the catalysis proceeded via a partially reduced CC hydrogenated carbonyl species, [PhCOCH2CH2Ph] (3'), to the fully reduced CO and CC hydrogenated secondary alcohol, [PhCH(OH)CH2CH2Ph] (3). Furthermore, the time dependent study showed that the major product of the catalysis modulated between (3') and (3) during the catalysis run performed over an extended period of 120 hours. Finally, the practical utility of the alcohol-alcohol coupling reaction was demonstrated by preparing five different flavan derivatives (13-17) related to various bioactive flavonoid natural products, in a one-pot tandem fashion.
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Affiliation(s)
- A P Prakasham
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
| | - Sabyasachi Ta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
| | - Shreyata Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
| | - Prasenjit Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
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17
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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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18
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Ruthenium−p-cymene complexes with acylthiourea, and its heterogenized form on graphene oxide act as catalysts for the synthesis of quinoxaline derivatives. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121933] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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19
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Huang M, Liu J, Li Y, Lan XB, Su P, Zhao C, Ke Z. Recent advances on N-heterocyclic carbene transition metal complexes for dehydrogenative catalysis using alcohols. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.10.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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20
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Qu R, Cheng Y, Yang S, Zhao C, Liu H, Huang X. Iron‐Catalyzed N‐Alkylation of Secondary Amines with Alcohols Using Borrowing Hydrogen Strategy. ChemistrySelect 2021. [DOI: 10.1002/slct.202100712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ruxin Qu
- Laboratory of Theoretical and Computational Chemistry Institute of Theoretical Chemistry Jilin University Liutiao Road Changchun 130023 China
| | - Yaxuan Cheng
- Laboratory of Theoretical and Computational Chemistry Institute of Theoretical Chemistry Jilin University Liutiao Road Changchun 130023 China
| | - Siwei Yang
- Laboratory of Theoretical and Computational Chemistry Institute of Theoretical Chemistry Jilin University Liutiao Road Changchun 130023 China
| | - Chaoyu Zhao
- Laboratory of Theoretical and Computational Chemistry Institute of Theoretical Chemistry Jilin University Liutiao Road Changchun 130023 China
| | - Huiling Liu
- Laboratory of Theoretical and Computational Chemistry Institute of Theoretical Chemistry Jilin University, Liutiao Road Changchun 130023 China
| | - Xuri Huang
- Laboratory of Theoretical and Computational Chemistry Institute of Theoretical Chemistry Jilin University, Liutiao Road Changchun 130023 China
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21
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Ru(II)-NHC catalysed N-Alkylation of amines with alcohols under solvent-free conditions. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120294] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Botubol-Ares JM, Cordón-Ouahhabi S, Moutaoukil Z, Collado IG, Jiménez-Tenorio M, Puerta MC, Valerga P. Methylene-Linked Bis-NHC Half-Sandwich Ruthenium Complexes: Binding of Small Molecules and Catalysis toward Ketone Transfer Hydrogenation. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00045] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- José Manuel Botubol-Ares
- Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Universidad de Cádiz, 11510, Puerto Real, Cádiz, Spain
| | - Safa Cordón-Ouahhabi
- Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Universidad de Cádiz, 11510, Puerto Real, Cádiz, Spain
| | - Zakaria Moutaoukil
- Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Universidad de Cádiz, 11510, Puerto Real, Cádiz, Spain
| | - Isidro G. Collado
- Departamento de Química Orgánica-INBIO, Facultad de Ciencias, Universidad de Cádiz, 11510, Puerto Real, Cádiz, Spain
| | - Manuel Jiménez-Tenorio
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica-INBIO, Facultad de Ciencias, Universidad de Cádiz, 11510, Puerto Real, Cádiz, Spain
| | - M. Carmen Puerta
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica-INBIO, Facultad de Ciencias, Universidad de Cádiz, 11510, Puerto Real, Cádiz, Spain
| | - Pedro Valerga
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica-INBIO, Facultad de Ciencias, Universidad de Cádiz, 11510, Puerto Real, Cádiz, Spain
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23
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Guérin V, Legault CY. Synthesis of NHC-Iridium(III) Complexes Based on N-Iminoimidazolium Ylides and Their Use for the Amine Alkylation by Borrowing Hydrogen Catalysis. Organometallics 2021. [DOI: 10.1021/acs.organomet.0c00726] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Vincent Guérin
- University of Sherbrooke, Department of Chemistry, Centre in Green Chemistry and Catalysis,2500 boul. de l’Université, Sherbrooke, Québec J1K 2R1, Canada
| | - Claude Y. Legault
- University of Sherbrooke, Department of Chemistry, Centre in Green Chemistry and Catalysis,2500 boul. de l’Université, Sherbrooke, Québec J1K 2R1, Canada
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24
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Huang M, Li Y, Lan XB, Liu J, Zhao C, Liu Y, Ke Z. Ruthenium(II) complexes with N-heterocyclic carbene-phosphine ligands for the N-alkylation of amines with alcohols. Org Biomol Chem 2021; 19:3451-3461. [PMID: 33899900 DOI: 10.1039/d1ob00362c] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal hydride complexes are key intermediates for N-alkylation of amines with alcohols by the borrowing hydrogen/hydrogen autotransfer (BH/HA) strategy. Reactivity tuning of metal hydride complexes could adjust the dehydrogenation of alcohols and the hydrogenation of imines. Herein we report ruthenium(ii) complexes with hetero-bidentate N-heterocyclic carbene (NHC)-phosphine ligands, which realize smart pathway selection in the N-alkylated reaction via reactivity tuning of [Ru-H] species by hetero-bidentate ligands. In particular, complex 6cb with a phenyl wingtip group and BArF- counter anion, is shown to be one of the most efficient pre-catalysts for this transformation (temperature is as low as 70 °C, neat conditions and catalyst loading is as low as 0.25 mol%). A large variety of (hetero)aromatic amines and primary alcohols were efficiently converted into mono-N-alkylated amines in good to excellent isolated yields. Notably, aliphatic amines, challenging methanol and diamines could also be transformed into the desired products. Detailed control experiments and density functional theory (DFT) calculations provide insights to understand the mechanism and the smart pathway selection via [Ru-H] species in this process.
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Affiliation(s)
- Ming Huang
- Clinical Pharmacy of The First Affiliated Hospital, School of clinical pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, P. R. China. and School of Materials Science & Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China.
| | - Yinwu Li
- School of Materials Science & Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China.
| | - Xiao-Bing Lan
- School of Materials Science & Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China.
| | - Jiahao Liu
- School of Materials Science & Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China.
| | - Cunyuan Zhao
- School of Materials Science & Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China.
| | - Yan Liu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China.
| | - Zhuofeng Ke
- School of Materials Science & Engineering, PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, P. R. China.
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25
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Nahra F, Cazin CSJ. Sustainability in Ru- and Pd-based catalytic systems using N-heterocyclic carbenes as ligands. Chem Soc Rev 2021; 50:3094-3142. [DOI: 10.1039/c8cs00836a] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review is a critical presentation of catalysts based on palladium and ruthenium bearing N-heterocyclic carbene ligands that have enabled a more sustainable approach to catalysis and to catalyst uses.
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Affiliation(s)
- Fady Nahra
- Centre for Sustainable Chemistry
- Department of Chemistry
- Ghent University
- 9000 Gent
- Belgium
| | - Catherine S. J. Cazin
- Centre for Sustainable Chemistry
- Department of Chemistry
- Ghent University
- 9000 Gent
- Belgium
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26
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Saha R, Mukherjee A, Bhattacharya S. Heteroleptic 1,4‐Diazabutadiene Complexes of Ruthenium: Synthesis, Characterization and Utilization in Catalytic Transfer Hydrogenation. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000859] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Rumpa Saha
- Department of Chemistry Inorganic Chemistry Section Jadavpur University 700 032 Kolkata India
| | - Aparajita Mukherjee
- Department of Chemistry Inorganic Chemistry Section Jadavpur University 700 032 Kolkata India
| | - Samaresh Bhattacharya
- Department of Chemistry Inorganic Chemistry Section Jadavpur University 700 032 Kolkata India
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27
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Murugan K, Vijayapritha S, Kavitha V, Viswanathamurthi P. Versatile formation of Ru(II) hydrazone complexes: Structure, theoretical studies and catalytic activity in α-alkylation. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114737] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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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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29
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Comparative structural description of five arene ruthenium(II) complexes of N,N-bidentate Schiff base ligands to related complexes from literature. TRANSIT METAL CHEM 2020. [DOI: 10.1007/s11243-020-00417-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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30
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Chen W, Egly J, Poblador-Bahamonde AI, Maisse-Francois A, Bellemin-Laponnaz S, Achard T. Synthesis, characterization, catalytic and biological application of half-sandwich ruthenium complexes bearing hemilabile (κ2-C,S)-thioether-functionalised NHC ligands. Dalton Trans 2020; 49:3243-3252. [PMID: 32096513 DOI: 10.1039/c9dt04825a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A series of cationic Ru(ii)(η6-p-cymene) complexes with thioether-functionalised N-heterocyclic carbene ligands have been prepared and fully characterized. Steric and electronic influence of the R thioether substituent on the coordination of the sulfur atom was investigated. The molecular structure of three of them has been determined by means of X-ray diffractrometry and confirmed the bidentate (κ2-C,S) coordination mode of the ligand. Interestingly, only a single diastereomer, as an enantiomeric couple, was observed in the solid state for complexes 1c, 1i and 1j. DFT calculations established a low energy inversion barrier between the two diastereomers through a sulfur pyramidal inversion pathway with R donating group while a dissociative/associative mechanism is more likely with R substituents that contain electron withdrawing group, thus suggesting that the only species observed by the 1H-NMR correspond to an average resonance position of a fluxional mixtures of isomers. All these complexes were found to catalyse the oxydant-free double dehydrogenation of primary amine into nitrile. Ru complex bearing NHC-functionalised S-tBu group was further investigated in a wide range of amines and was found more selective for alkyl amine substrates than for benzylamine derivatives. Finally, preliminary results of the biological effects on various human cancer cells of four selected Ru complexes are reported.
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Affiliation(s)
- Weiguang Chen
- Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg-CNRS UMR7504, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France.
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31
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Dubey P, Singh AK. Sonogashira Coupling (Cu/Amine‐Free) of ArBr/Cl in Aerobic Condition and N
‐
Benzylation of Aniline with Benzyl Alcohol Catalyzed by Complexes of Pd(II) with Sulfated/Selenated NHCs. ChemistrySelect 2020. [DOI: 10.1002/slct.201904819] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Pooja Dubey
- Department of Chemistry, Indian Institute of Technology, Delhi New Delhi 110016 India
| | - Ajai K. Singh
- Department of Chemistry, Indian Institute of Technology, Delhi New Delhi 110016 India
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32
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Chen C, Ji J, Wang CJ, Jia AQ, Zhang QF. Synthesis, characterization and crystal structures of half-sandwich ruthenium complexes with bidentate chiral Schiff-base ligands. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Vijayan P, Yadav S, Yadav S, Gupta R. Ruthenium(II) complexes of pyridine-carboxamide ligands bearing appended benzothiazole/benzimidazole rings: Structural diversity and catalysis. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119285] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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34
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Quintin F, Pinaud J, Lamaty F, Bantreil X. Mechanosynthesis of Noels-type NHC–Ruthenium Complexes and Applications in Ring-Opening Metathesis Polymerization. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00013] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- François Quintin
- IBMM, Université Montpellier, CNRS, ENSCM, Montpellier CEDEX 5 34095, France
| | - Julien Pinaud
- ICGM, Université Montpellier, CNRS, ENSCM, Montpellier 34095, France
| | - Frédéric Lamaty
- IBMM, Université Montpellier, CNRS, ENSCM, Montpellier CEDEX 5 34095, France
| | - Xavier Bantreil
- IBMM, Université Montpellier, CNRS, ENSCM, Montpellier CEDEX 5 34095, France
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35
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Sathishkumar PN, Prabha PS, Bhuvanesh NS, Karvembu R. Tuning acylthiourea ligands in Ru(II) catalysts for altering the reactivity and chemoselectivity of transfer hydrogenation reactions, and synthesis of 3-isopropoxy-1H-indole through a new synthetic approach. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2019.121087] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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36
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Donthireddy SNR, Mathoor Illam P, Rit A. Ruthenium(II) Complexes of Heteroditopic N-Heterocyclic Carbene Ligands: Efficient Catalysts for C–N Bond Formation via a Hydrogen-Borrowing Strategy under Solvent-Free Conditions. Inorg Chem 2020; 59:1835-1847. [DOI: 10.1021/acs.inorgchem.9b03049] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- S. N. R. Donthireddy
- Department of Chemistry, Indian Institute of Technology (IIT) Madras, Chennai 600036, India
| | | | - Arnab Rit
- Department of Chemistry, Indian Institute of Technology (IIT) Madras, Chennai 600036, India
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37
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Oswal P, Arora A, Singh S, Nautiyal D, Kumar S, Rao GK, Kumar A. Organochalcogen ligands in catalysis of oxidation of alcohols and transfer hydrogenation. Dalton Trans 2020; 49:12503-12529. [PMID: 32804180 DOI: 10.1039/d0dt01201g] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organochalcogen compounds have been used as the building blocks for the development of a variety of catalysts that have been studied comprehensively during the last two decades for several chemical transformations. Transfer hydrogenation (reduction of carbonyl compounds to alcohols) and oxidation of alcohols (conversion of alcohols to their respective ketones and aldehydes) are also among such chemical transformations. Some compilations are available in the literature on the development of catalysts, based on organochalcogen ligands, and their applications in Heck reaction, Suzuki reaction, and other related aspects. Some review articles have also been published on different aspects of oxidation of alcohols and transfer hydrogenation. However, no such article is available in the literature on the syntheses and use of organochalcogen ligated catalysts for these two reactions. In this perspective, a survey of developments pertaining to the synthetic aspects of such organochalcogen (S/Se/Te) based catalysts for the two reactions has been made. In addition to covering the syntheses of chalcogen ligands, their metal complexes and nanoparticles (NPs), emphasis has also been placed on the efficient conversion of different substrates during catalytic reactions, diversity in catalytic potential and mechanistic aspects of catalysis. It also includes the analysis of comparison (in terms of efficiency) between this unique class of catalysts and efficient catalysts without a chalcogen donor. The future scope of this area has also been highlighted.
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Affiliation(s)
- Preeti Oswal
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248012, India.
| | - Aayushi Arora
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248012, India.
| | - Siddhant Singh
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248012, India.
| | - Divyanshu Nautiyal
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248012, India.
| | - Sushil Kumar
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248012, India.
| | - Gyandshwar Kumar Rao
- Department of Chemistry Biochemistry and Forensic Science, Amity School of Applied Sciences, Amity University Haryana, Gurgaon, Haryana 122413, India
| | - Arun Kumar
- Department of Chemistry, School of Physical Sciences, Doon University, Dehradun, 248012, India.
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38
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Yiğit B, Özge Karaca E, Yiğit M, Gürbüz N, Arslan H, Özdemir İ. Active ruthenium(II)-NHC complexes for alkylation of amines with alcohols using solvent-free conditions. Polyhedron 2020. [DOI: 10.1016/j.poly.2019.114234] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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39
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Mandal T, Singh V, Choudhury J. Coordination Booster-Catalyst Assembly: Remote Osmium Outperforming Ruthenium in Boosting Catalytic Activity. Chem Asian J 2019; 14:4774-4779. [PMID: 31560812 DOI: 10.1002/asia.201901215] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/26/2019] [Indexed: 12/15/2022]
Abstract
Presented herein is a set of bimetallic and trimetallic "coordination booster-catalyst" assemblies in which the coordination complexes [RuII (terpy)2 ] and [OsII (terpy)2 ] acted as boosters for enhancement of the catalytic activity of [RuII (NHC)(para-cymene)]-based catalytic site. The boosters accelerated the oxidative loss of para-cymene from the catalytic site to generate the active catalyst during the oxidation of alkenes and alkynes into corresponding aldehydes, ketones and diketones. It was found that the boosting efficiency of the [OsII (terpy)2 ] units was considerably higher than its congener [RuII (terpy)2 ] unit in these assemblies. Mechanistic studies were conducted to understand this unique improvement.
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Affiliation(s)
- Tanmoy Mandal
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
| | - Vivek Singh
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
| | - Joyanta Choudhury
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
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40
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Karmakar J, Bhattacharya S. Arene-ruthenium complexes with 2-(arylazo)phenol as ancillary ligand: Synthesis, characterization, and utilization in catalytic transfer-hydrogenation. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.02.046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Cherepakhin V, Williams TJ. Catalyst Evolution in Ruthenium-Catalyzed Coupling of Amines and Alcohols. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03679] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Valeriy Cherepakhin
- Donald P. and Katherine B. Loker Hydrocarbon Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089-1661, United States
| | - Travis J. Williams
- Donald P. and Katherine B. Loker Hydrocarbon Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089-1661, United States
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42
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Illam PM, Donthireddy SNR, Chakrabartty S, Rit A. Heteroditopic Ru(II)– and Ir(III)–NHC Complexes with Pendant 1,2,3-Triazole/Triazolylidene Groups: Stereoelectronic Impact on Transfer Hydrogenation of Unsaturated Compounds. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00156] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - S. N. R. Donthireddy
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Sayantan Chakrabartty
- 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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43
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Gour J, Gatadi S, Malasala S, Yaddanpudi MV, Nanduri S. A Microwave-Assisted SmI 2-Catalyzed Direct N-Alkylation of Anilines with Alcohols. J Org Chem 2019; 84:7488-7494. [PMID: 31066282 DOI: 10.1021/acs.joc.9b00717] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A new protocol for the alkylation of aromatic amines has been described using alcohols in the presence of SmI2 as a catalyst with the generation of water as the sole byproduct. The reaction proceeds under MW conditions and selectively generates monoalkylated amines. This protocol features a broad substrate scope and good functional-group tolerance with moderate to high yields.
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Affiliation(s)
- Jitendra Gour
- Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad 500 037 , India
| | - Srikanth Gatadi
- Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad 500 037 , India
| | - Satyaveni Malasala
- Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad 500 037 , India
| | - Madhavi Venkata Yaddanpudi
- Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad 500 037 , India
| | - Srinivas Nanduri
- Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad 500 037 , India
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44
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Kaloğlu N, Achard M, Bruneau C, Özdemir İ. Ruthenium(II)-(Arene)-N-Heterocyclic Carbene Complexes: Efficient and Selective Catalysts for the N
-Alkylation of Aromatic Amines with Alcohols. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900191] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nazan Kaloğlu
- Department of Chemistry; Faculty of Science and Art; İnönü University; 44280 Malatya Turkey
- Catalysis Research and Application Center; İnönü University; 44280 Malatya Turkey
| | - Mathieu Achard
- ISCR (Institut des Sciences Chimiques de Rennes) - UMR6226; Rennes University, CNRS; 35000 Rennes France
| | - Christian Bruneau
- ISCR (Institut des Sciences Chimiques de Rennes) - UMR6226; Rennes University, CNRS; 35000 Rennes France
| | - İsmail Özdemir
- Department of Chemistry; Faculty of Science and Art; İnönü University; 44280 Malatya Turkey
- Catalysis Research and Application Center; İnönü University; 44280 Malatya Turkey
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45
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Dubey P, Gupta S, Singh AK. Complexes of Pd(II), η6-C6H6Ru(II), and η5-Cp*Rh(III) with Chalcogenated Schiff Bases of Anthracene-9-carbaldehyde and Base-Free Catalytic Transfer Hydrogenation of Aldehydes/Ketones and N-Alkylation of Amines. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00908] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pooja Dubey
- Department of Chemistry, Indian Institute of Technology, Delhi, New Delhi 110016, India
| | - Sonu Gupta
- Department of Chemistry, Indian Institute of Technology, Delhi, New Delhi 110016, India
| | - Ajai K. Singh
- Department of Chemistry, Indian Institute of Technology, Delhi, New Delhi 110016, India
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46
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Malan FP, Singleton E, van Rooyen PH, Landman M. Tandem transfer hydrogenation–epoxidation of ketone substrates catalysed by alkene-tethered Ru( ii)–NHC complexes. NEW J CHEM 2019. [DOI: 10.1039/c9nj01220f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Eight novel alkene-tethered Ru(ii)–NHC complexes were employed as catalysts in tandem transfer hydrogenation–epoxidation reactions using phenacyl bromide derivatives as substrates.
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Affiliation(s)
| | - Eric Singleton
- Department of Chemistry
- University of Pretoria
- Hatfield
- South Africa
| | | | - Marilé Landman
- Department of Chemistry
- University of Pretoria
- Hatfield
- South Africa
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47
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Huang M, Li Y, Li Y, Liu J, Shu S, Liu Y, Ke Z. Room temperature N-heterocyclic carbene manganese catalyzed selective N-alkylation of anilines with alcohols. Chem Commun (Camb) 2019; 55:6213-6216. [DOI: 10.1039/c9cc02989c] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The first example of room temperature homogeneous non-noble metal catalyzed selective N-alkylation of anilines with alcohols using bis-NHC manganese.
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Affiliation(s)
- Ming Huang
- School of Materials Science and Engineering
- PCFM Lab
- Sun Yat-sen University
- Guangzhou 510275
- P. R. China
| | - Yukui Li
- School of Materials Science and Engineering
- PCFM Lab
- Sun Yat-sen University
- Guangzhou 510275
- P. R. China
| | - Yinwu Li
- School of Materials Science and Engineering
- PCFM Lab
- Sun Yat-sen University
- Guangzhou 510275
- P. R. China
| | - Jiahao Liu
- School of Materials Science and Engineering
- PCFM Lab
- Sun Yat-sen University
- Guangzhou 510275
- P. R. China
| | - Siwei Shu
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- P. R. China
| | - Yan Liu
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- P. R. China
| | - Zhuofeng Ke
- School of Materials Science and Engineering
- PCFM Lab
- Sun Yat-sen University
- Guangzhou 510275
- P. R. China
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48
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Guo B, Li HX, Zhang SQ, Young DJ, Lang JP. C-N Bond Formation Catalyzed by Ruthenium Nanoparticles Supported on N-Doped Carbon via Acceptorless Dehydrogenation to Secondary Amines, Imines, Benzimidazoles and Quinoxalines. ChemCatChem 2018. [DOI: 10.1002/cctc.201801525] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Bin Guo
- College of Chemistry Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P.R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 P.R. China
| | - Hong-Xi Li
- College of Chemistry Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P.R. China
| | - Shi-Qi Zhang
- College of Chemistry Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P.R. China
| | - David James Young
- Faculty of Science, Health, Education and Engineering; University of the Sunshine Coast Queensland; 4558 Australia
| | - Jian-Ping Lang
- College of Chemistry Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 P.R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 P.R. China
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49
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Balamurugan G, Balaji S, Ramesh R, Bhuvanesh NS. Synthesis and Structures of Arene Ruthenium (II)-NHC Complexes: Efficient Catalytic α-alkylation of ketones via Hydrogen Auto Transfer Reaction. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4696] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gunasekaran Balamurugan
- Centre for organometallic Chemistry, School of Chemistry; Bharathidasan University; Tiruchirapalli 620024 Tamilnadu India
| | - Sundarraman Balaji
- Centre for organometallic Chemistry, School of Chemistry; Bharathidasan University; Tiruchirapalli 620024 Tamilnadu India
| | - Rengan Ramesh
- Centre for organometallic Chemistry, School of Chemistry; Bharathidasan University; Tiruchirapalli 620024 Tamilnadu India
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50
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Bauri S, Donthireddy SNR, Illam PM, Rit A. Effect of Ancillary Ligand in Cyclometalated Ru(II)-NHC-Catalyzed Transfer Hydrogenation of Unsaturated Compounds. Inorg Chem 2018; 57:14582-14593. [PMID: 30421610 DOI: 10.1021/acs.inorgchem.8b02246] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In an effort to develop efficient Ru(II)-NHC-based catalyst considering their stereoelectronic effect for hydride-transfer reaction, we found that the ancillary NHC ligand can play a significant role in its catalytic performance. This effect is demonstrated by comparing the activity of two different types of orthometalated precatalysts of general formula [( p-cymene)(NHC)RuII(X)] (NHC = an imidazolylidene-based ImNHC, compound 2a-c, or a mesoionic triazolylidene-based tzNHC, compound 4) in transfer hydrogenation of carbonyl substrates. The electron-rich precatalyst, 2c, containing p-OMe-substituted NHC ligand performed significantly better than both unsubstituted complex 2a and p-CF3 substituted electron-poor complex 2b in ketone reduction. Whereas bulky mesoionic triazolylidene ligand containing complex 4 was found to be superior catalyst for aldehyde reduction and the precatalyst 2a is more suitable for the selective transfer hydrogenation of a wide range of aromatic aldimines to amines. To the best of our knowledge, this is the first systematic study on the effect of stereoelectronic tuning of ancillary orthometalated NHC ligand in Ru(II)-catalyzed transfer hydrogenations of various types of unsaturated compounds with broad substrate scope.
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Affiliation(s)
- Somnath Bauri
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
| | - S N R Donthireddy
- 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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