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Singh T, Chakraborty S. Molybdenum-catalyzed hydrogenation of carbon dioxide, bicarbonate, and inorganic carbonates to formates. Dalton Trans 2024; 53:10244-10249. [PMID: 38829152 DOI: 10.1039/d4dt00916a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Herein, we report the hydrogenation of carbon dioxide to sodium formate catalyzed by low-valent molybdenum phosphine complexes. The 1,3-bis(diphenylphosphino)propane (DPPP)-based Mo complex was found to be an efficient catalyst in the presence of NaOH affording formate with a TON of 975 at 130 °C in THF/H2O after 24 h utilizing 40 bar (CO2 : H2 = 10 : 30) pressure. The complex was also active in the hydrogenation of sodium bicarbonate and inorganic carbonates to the corresponding formates. Mechanistic investigation revealed that the reaction proceeded via an intermediate formato complex.
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Affiliation(s)
- Tushar Singh
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan, India.
| | - Subrata Chakraborty
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan, India.
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2
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Singh T, Atreya V, Jalwal S, Anand A, Chakraborty S. Advances in Group VI Metal-Catalyzed Homogeneous Hydrogenation and Dehydrogenation Reactions. Chem Asian J 2023; 18:e202300758. [PMID: 37815164 DOI: 10.1002/asia.202300758] [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: 08/29/2023] [Revised: 10/10/2023] [Accepted: 10/10/2023] [Indexed: 10/11/2023]
Abstract
Transition metal-catalyzed homogeneous hydrogenation and dehydrogenation reactions for attaining plethora of organic scaffolds have evolved as a key domain of research in academia and industry. These protocols are atom-economic, greener, in line with the goal of sustainability, eventually pave the way for numerous novel environmentally benign methodologies. Appealing progress has been achieved in the realm of homogeneous catalysis utilizing noble metals. Owing to their high cost, less abundance along with toxicity issues led the scientific community to search for sustainable alternatives. In this context, earth- abundant base metals have gained substantial attention culminating enormous progress in recent years, predominantly with pincer-type complexes of nickel, cobalt, iron, and manganese. In this regard, group VI chromium, molybdenum and tungsten complexes have been overlooked and remain underdeveloped despite their earth-abundance and bio-compatibility. This review delineates a comprehensive overview in the arena of homogeneously catalysed (de)hydrogenation reactions using group VI base metals chromium, molybdenum, and tungsten till date. Various reactions have been described; hydrogenation, transfer hydrogenation, dehydrogenation, acceptorless dehydrogenative coupling, hydrogen auto transfer, along with their scope and brief mechanistic insights.
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Affiliation(s)
- Tushar Singh
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan
| | - Vaishnavi Atreya
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan
| | - Sachin Jalwal
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan
| | - Aman Anand
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan
| | - Subrata Chakraborty
- Department of Chemistry, Indian Institute of Technology Jodhpur, Karwar, Jodhpur, 342037, Rajasthan
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3
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Li X, Xu Y, Li W, Che J, Zhao X, Cao R, Li X, Li S. Design, Synthesis, Biological Evaluation, and Molecular Dynamics Simulation of Influenza Polymerase PB2 Inhibitors. Molecules 2023; 28:molecules28041849. [PMID: 36838837 PMCID: PMC9960307 DOI: 10.3390/molecules28041849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/15/2023] [Accepted: 01/29/2023] [Indexed: 02/18/2023] Open
Abstract
The PB2 subunit of the influenza RNA-dependent RNA polymerase (RdRp) has been identified as a promising target for the treatment of influenza. To expand the chemical space of the known influenza polymerase PB2 inhibitor-pimodivir (formerly VX-787) and improve its pharmacokinetic profile, two pimodivir analogs containing 2,3-dihydro-imidazopyridine fragment (comp. I and comp. II) were designed, synthesized, and evaluated for anti-influenza virus activity. In the cytopathic effect (CPE) inhibition assay, comp. I and comp. II showed IC50 values of 0.07 and 0.09 μM for A/Puerto Rico/8/34 (H1N1) and 0.04 and 0.07 μM for A/Hong Kong/8/68 (H3N2), respectively. Protein-binding affinity assay results showed a concentration-dependent association and dissociation pattern, with KD values of 1.398 and 1.670 μM, respectively. In vitro metabolic stability assays showed that comp. I and comp. II exhibited good stability to liver microsomes and considerably less sensitivity to aldehyde oxidase compared to pimodivir. The binding modes of comp. I and comp. II were similar to those of VX-787; however, comp. I and comp. II had lower structural adaptability to PB2 than VX-787. Our results provide helpful information regarding the structure-activity relationship for the design of novel PB2 inhibitors and a reference for the development of drugs containing 2,3-dihydro-imidazopyridine fragments.
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Affiliation(s)
- Xinhong Li
- National Engineering Research Center for the Emergency Strategic Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Yijie Xu
- National Engineering Research Center for the Emergency Strategic Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Wei Li
- National Engineering Research Center for the Emergency Strategic Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Jinjing Che
- National Engineering Research Center for the Emergency Strategic Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Xu Zhao
- Department of Hepatology, Fifth Medical Center of Chinese PLA General Hospital, Beijing 100039, China
- China Military Institute of Chinese Materia, Fifth Medical Center of Chinese PLA General Hospital, Beijing 100053, China
| | - Ruyuan Cao
- National Engineering Research Center for the Emergency Strategic Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
- Correspondence: (R.C.); (X.L.); (S.L.); Tel.: +86-10-66930673 (ext. 717) (R.C.); +86-10-66930634 (X.L.); +86-10-66930250 (S.L.)
| | - Xingzhou Li
- National Engineering Research Center for the Emergency Strategic Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
- Correspondence: (R.C.); (X.L.); (S.L.); Tel.: +86-10-66930673 (ext. 717) (R.C.); +86-10-66930634 (X.L.); +86-10-66930250 (S.L.)
| | - Song Li
- National Engineering Research Center for the Emergency Strategic Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
- Correspondence: (R.C.); (X.L.); (S.L.); Tel.: +86-10-66930673 (ext. 717) (R.C.); +86-10-66930634 (X.L.); +86-10-66930250 (S.L.)
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4
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Wang A, Liu X, Gao W, Ma L, Liu S, Zhang G, Zhou M, Jia X, Chen J. Cathode enabled high faradaic efficiency: reduction of imines to amines with H 2O as a H-source. Chem Commun (Camb) 2022; 58:9906-9909. [PMID: 35975808 DOI: 10.1039/d2cc03479d] [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
Benefiting from a high overpotential of the competitive hydrogen evolution reaction with a carbon paper cathode, the desired electrochemical reduction of imines was achieved with high faradaic efficiency by using H2O as a H-source. With this sustainable atom-economic strategy, a series of potentially versatile amines were obtained in medium-to-high yields (49-86%).
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Affiliation(s)
- Aihua Wang
- Shandong Provincial Key Laboratory of Molecular Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, P. R. China.
| | - Xin Liu
- Shandong Provincial Key Laboratory of Molecular Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, P. R. China.
| | - Wei Gao
- Shandong Provincial Key Laboratory of Molecular Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, P. R. China.
| | - Li Ma
- Shandong Provincial Key Laboratory of Molecular Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, P. R. China.
| | - Siyuan Liu
- Shandong Provincial Key Laboratory of Molecular Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, P. R. China.
| | - Guofeng Zhang
- Shandong Provincial Key Laboratory of Molecular Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, P. R. China.
| | - Mingyang Zhou
- Shandong Provincial Key Laboratory of Molecular Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, P. R. China.
| | - Xiaofei Jia
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Jianbin Chen
- Shandong Provincial Key Laboratory of Molecular Engineering, State Key Laboratory of Biobased Material and Green Papermaking, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, P. R. China.
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5
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Both N, Spannenberg A, Junge K, Beller M. Low-Valent Molybdenum PNP Pincer Complexes as Catalysts for the Semihydrogenation of Alkynes. Organometallics 2022; 41:1797-1805. [PMID: 36156902 PMCID: PMC9490815 DOI: 10.1021/acs.organomet.1c00709] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Low-valent molybdenum PNP pincer complexes were studied as catalysts for the semihydrogenation of alkynes. For that purpose, tBu-substituted PNP complexes PNP tBuMo(CO)2 (6a) and PNP tBuMo(CO)3 (6c) and the NNP complex NNP iPrMo(CO)2(PPh3) ((rac)-7) were synthesized and characterized. By utilizing the cyclohexyl-substituted complex PNPCyMo(CO)2(CH3CN) (5a), several diphenylacetylene derivatives are transformed to the corresponding (Z)-alkenes with good to very good diastereoselectivities (up to 91:9). Mechanistic experiments indicate an outer-sphere mechanism including metal-ligand cooperativity.
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Affiliation(s)
- Niklas
F. Both
- Leibniz-Institut für
Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Anke Spannenberg
- Leibniz-Institut für
Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Kathrin Junge
- Leibniz-Institut für
Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz-Institut für
Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
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Ligand acidity constants as calculated by density functional theory for PF3 and N-Heterocyclic carbene ligands in hydride complexes of Iron(II). J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.10.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Azizi K, Madsen R. Molybdenum-Catalyzed Dehydrogenative Synthesis of Imines from Alcohols and Amines. ChemCatChem 2018. [DOI: 10.1002/cctc.201800677] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Kobra Azizi
- Department of Chemistry; Technical University of Denmark; 2800 Kgs. Lyngby Denmark
| | - Robert Madsen
- Department of Chemistry; Technical University of Denmark; 2800 Kgs. Lyngby Denmark
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Zhang S, Appel AM, Bullock RM. Reversible Heterolytic Cleavage of the H–H Bond by Molybdenum Complexes: Controlling the Dynamics of Exchange Between Proton and Hydride. J Am Chem Soc 2017; 139:7376-7387. [DOI: 10.1021/jacs.7b03053] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Shaoguang Zhang
- Pacific Northwest National Laboratory, P.O. Box 999, K2-12, Richland, Washington 99352, United States
| | - Aaron M. Appel
- Pacific Northwest National Laboratory, P.O. Box 999, K2-12, Richland, Washington 99352, United States
| | - R. Morris Bullock
- Pacific Northwest National Laboratory, P.O. Box 999, K2-12, Richland, Washington 99352, United States
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Solinas M, Sechi B, Baldino S, Baratta W, Chelucci G. Hydrogenation of Imines Catalyzed by 2-(Aminomethyl)pyridine-Based Ruthenium and Osmium Complexes. ChemistrySelect 2016. [DOI: 10.1002/slct.201600548] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Maurizio Solinas
- CNR; Istituto di Chimica Biomolecolare UOS Sassari; Traversa La Crucca 3 07100 Sassari Italy
| | - Barbara Sechi
- CNR; Istituto di Chimica Biomolecolare UOS Sassari; Traversa La Crucca 3 07100 Sassari Italy
| | - Salvatore Baldino
- Dipartimento DI4 A; Università di Udine; Via Cotonificio 108 33100 Udine Italy
| | - Walter Baratta
- Dipartimento DI4 A; Università di Udine; Via Cotonificio 108 33100 Udine Italy
| | - Giorgio Chelucci
- Dipartimento di Agraria; Università di Sassari; Viale Italia 39 07100 Sassari Italy
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10
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Abstract
Transition metal hydride complexes are usually amphoteric, not only acting as hydride donors, but also as Brønsted-Lowry acids. A simple additive ligand acidity constant equation (LAC for short) allows the estimation of the acid dissociation constant Ka(LAC) of diamagnetic transition metal hydride and dihydrogen complexes. It is remarkably successful in systematizing diverse reports of over 450 reactions of acids with metal complexes and bases with metal hydrides and dihydrogen complexes, including catalytic cycles where these reactions are proposed or observed. There are links between pKa(LAC) and pKa(THF), pKa(DCM), pKa(MeCN) for neutral and cationic acids. For the groups from chromium to nickel, tables are provided that order the acidity of metal hydride and dihydrogen complexes from most acidic (pKa(LAC) -18) to least acidic (pKa(LAC) 50). Figures are constructed showing metal acids above the solvent pKa scales and organic acids below to summarize a large amount of information. Acid-base features are analyzed for catalysts from chromium to gold for ionic hydrogenations, bifunctional catalysts for hydrogen oxidation and evolution electrocatalysis, H/D exchange, olefin hydrogenation and isomerization, hydrogenation of ketones, aldehydes, imines, and carbon dioxide, hydrogenases and their model complexes, and palladium catalysts with hydride intermediates.
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Affiliation(s)
- 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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Chakraborty S, Kunjanpillai R, Blacque O, Berke H. Ullmann‐Type and Related Redox Reactions of Nitrosyl Molybdenum Complexes Bearing a Large‐Bite‐Angle Diphosphine. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Subrata Chakraborty
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland, http://www.chem.uzh.ch/research/emeriti/berke/curriculumVitae.html
| | - Rajesh Kunjanpillai
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland, http://www.chem.uzh.ch/research/emeriti/berke/curriculumVitae.html
| | - Olivier Blacque
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland, http://www.chem.uzh.ch/research/emeriti/berke/curriculumVitae.html
| | - Heinz Berke
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland, http://www.chem.uzh.ch/research/emeriti/berke/curriculumVitae.html
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12
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Chakraborty S, Blacque O, Berke H. Ligand assisted carbon dioxide activation and hydrogenation using molybdenum and tungsten amides. Dalton Trans 2015; 44:6560-70. [DOI: 10.1039/c5dt00278h] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molybdenum and tungsten amides M(NO)(CO)(PNP) {M = Mo, 3a; W, 3b; PNP = (iPr2PCH2CH2)2N} can activate CO2 at room temperature forming carbamate species M(NO)(CO)(PNP)(OCO) (M = Mo, 4a(trans); W = 4b(trans). Employing 3a,b stoichiometric hydrogenation of carbon dioxide could be demonstrated.
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Affiliation(s)
| | - Olivier Blacque
- Departent of Chemistry
- University of Zürich
- 8057 Zürich
- Switzerland
| | - Heinz Berke
- Departent of Chemistry
- University of Zürich
- 8057 Zürich
- Switzerland
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