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Sarkar K, Kumar P, Mule A, Maji B. Divergent Synthesis of Pyrazoles via Manganese Pincer Complex Catalyzed Acceptorless Dehydrogenative Coupling Reactions. Chemistry 2024; 30:e202401105. [PMID: 38655822 DOI: 10.1002/chem.202401105] [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: 03/19/2024] [Revised: 04/23/2024] [Accepted: 04/24/2024] [Indexed: 04/26/2024]
Abstract
This report detailed the synthesis of multi-substituted pyrazoles through the acceptorless dehydrogenative coupling (ADC) reaction catalyzed by a well-defined manganese(I)-pincer complex. Symmetrically substituted pyrazoles were synthesized by reacting 1,3-diols with hydrazines. Unsymmetrically substituted pyrazoles were selectively made via the ADC of primary alcohols with methyl hydrazones. Water and hydrogen are liberated as the green byproducts. The endurance of these methodologies has been presented by producing 30 substrates with varied functionalities. Model reactions were scaled up to demonstrate practicability. The reaction rate and order were measured to transparent the involvement of the reagents during catalysis. Control experiments elucidated the plausible reaction mechanisms.
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Affiliation(s)
- Koushik Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, 741246, India
| | - Pramod Kumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, 741246, India
| | - Arjun Mule
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, 741246, India
| | - Biplab Maji
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, 741246, India
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2
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Runemark A, Sundén H. Overcoming Back Electron Transfer in the Electron Donor-Acceptor Complex-Mediated Visible Light-Driven Generation of α-Aminoalkyl Radicals from Secondary Anilines. J Org Chem 2023; 88:462-474. [PMID: 36479960 PMCID: PMC9830629 DOI: 10.1021/acs.joc.2c02448] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An additive-free, visible light-driven annulation between N-aryl amino acids and maleimide to form tetrahydroquinolines (THQs) is disclosed. Photochemical activation of an electron donor-acceptor (EDA) complex between amino acids and maleimides drives the reaction, and aerobic oxygen acts as the terminal oxidant in the net oxidative process. A range of N-aryl amino acids and maleimides have been investigated as substrates to furnish the target THQ in good to excellent yield. Mechanistic investigations, including titration and UV-vis studies, demonstrate the key role of the EDA complex as the photoactive species.
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Affiliation(s)
- August Runemark
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Kemivägen 10, Gothenburg 412 96, Sweden
| | - Henrik Sundén
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Kemivägen 10, Gothenburg 412 96, Sweden,Chemistry
and Molecular Biology, University of Gothenburg, Kemivägen 10, Gothenburg 412 96, Sweden,
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3
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Zerbib S, Khouili M, Catto M, Bouissane L. Sydnone: Synthesis, Reactivity and Biological Activities. Curr Med Chem 2023; 30:1122-1144. [PMID: 35726409 DOI: 10.2174/0929867329666220620123050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/07/2022] [Accepted: 03/24/2022] [Indexed: 11/22/2022]
Abstract
Sydnones are among the most well-known mesoionic compounds. Since their synthesis in 1935 by Earl and Mecknay, numerous researches have shown that the chemical behavior, physical and biological properties of sydnones make them the most useful compounds in organic chemistry. Sydnones undergo thermal 1,3-dipolar cycloaddition reaction with dipolarophiles (alkynes or alkenes) to give exclusively derivatives containing a pyrazole moiety exhibiting numerous applications, such as pharmaceuticals and agrochemicals. However, the sydnone cycloaddition reaction with alkynes requires harsh conditions, like high temperatures and long reaction times, giving poor regioselectivity to the resulting products. To overcome these constraints, new reactions named CuSAC (Copper- Catalyzed Sydnone-Alkyne Cycloaddition) and SPSAC (Strain-Promoted Sydnone- Alkyne Cycloaddition) have been developed, leading to pyrazoles with interesting constant kinetics.
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Affiliation(s)
- Souad Zerbib
- Molecular Chemistry, Materials and Catalysis Laboratory, Faculty of Sciences and Technologies, Sultan Moulay Slimane University, BP 523, 23000 Beni-Mellal, Morocco
| | - Mostafa Khouili
- Molecular Chemistry, Materials and Catalysis Laboratory, Faculty of Sciences and Technologies, Sultan Moulay Slimane University, BP 523, 23000 Beni-Mellal, Morocco
| | - Marco Catto
- Department of Pharmacy-Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona 4, 70125 Bari, Italy
| | - Latifa Bouissane
- Molecular Chemistry, Materials and Catalysis Laboratory, Faculty of Sciences and Technologies, Sultan Moulay Slimane University, BP 523, 23000 Beni-Mellal, Morocco
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4
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Lin B, Yao Y, Huang Y, Lin Q, Weng Z. Regioselective synthesis of 3-trifluoromethyl 1,2,4-triazoles via photocycloaddition of sydnone with CF 3CN. Chem Commun (Camb) 2022; 58:12224-12227. [DOI: 10.1039/d2cc03928a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A photocycloaddition of sydnone with CF3CN for the regioselective synthesis of 3-trifluoromethyl 1,2,4-triazoles is reported.
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Affiliation(s)
- Bo Lin
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Yunfei Yao
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Yangjie Huang
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Qi Lin
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Zhiqiang Weng
- Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
- Key Laboratory of Molecule Synthesis and Function Discovery, and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
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Candish L, Collins KD, Cook GC, Douglas JJ, Gómez-Suárez A, Jolit A, Keess S. Photocatalysis in the Life Science Industry. Chem Rev 2021; 122:2907-2980. [PMID: 34558888 DOI: 10.1021/acs.chemrev.1c00416] [Citation(s) in RCA: 104] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In the pursuit of new pharmaceuticals and agrochemicals, chemists in the life science industry require access to mild and robust synthetic methodologies to systematically modify chemical structures, explore novel chemical space, and enable efficient synthesis. In this context, photocatalysis has emerged as a powerful technology for the synthesis of complex and often highly functionalized molecules. This Review aims to summarize the published contributions to the field from the life science industry, including research from industrial-academic partnerships. An overview of the synthetic methodologies developed and strategic applications in chemical synthesis, including peptide functionalization, isotope labeling, and both DNA-encoded and traditional library synthesis, is provided, along with a summary of the state-of-the-art in photoreactor technology and the effective upscaling of photocatalytic reactions.
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Affiliation(s)
- Lisa Candish
- Drug Discovery Sciences, Pharmaceuticals, Bayer AG, 42113 Wuppertal, Germany
| | - Karl D Collins
- Bayer Foundation, Public Affairs, Science and Sustainability, Bayer AG, 51368 Leverkusen, Germany
| | - Gemma C Cook
- Discovery High-Throughput Chemistry, Medicinal Science and Technology, GlaxoSmithKline, Stevenage SG1 2NY, U.K
| | - James J Douglas
- Early Chemical Development, Pharmaceutical Sciences, R&D, AstraZeneca, Macclesfield SK10 2NA, U.K
| | - Adrián Gómez-Suárez
- Organic Chemistry, Bergische Universität Wuppertal, 42119 Wuppertal, Germany
| | - Anais Jolit
- Medicinal Chemistry Department, Neuroscience Discovery Research, AbbVie Deutschland GmbH & Co. KG, 67061 Ludwigshafen, Germany
| | - Sebastian Keess
- Medicinal Chemistry Department, Neuroscience Discovery Research, AbbVie Deutschland GmbH & Co. KG, 67061 Ludwigshafen, Germany
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Mummel S, Lederle F, Hübner EG, Namyslo JC, Nieger M, Schmidt A. Sydnone Methides-A Forgotten Class of Mesoionic Compounds for the Generation of Anionic N-Heterocyclic Carbenes. Angew Chem Int Ed Engl 2021; 60:18882-18887. [PMID: 34153173 PMCID: PMC8456854 DOI: 10.1002/anie.202107495] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Indexed: 12/25/2022]
Abstract
Sydnone methides are described from which only one single example has been mentioned in the literature so far. Their deprotonation gave anions which can be formulated as π-electron rich anionic N-heterocyclic carbenes. Sulfur and selenium adducts were stabilized as their methyl ethers, and mercury, gold as well as rhodium complexes of the sydnone methide carbenes were prepared. Sydnone methide anions also undergo C-C coupling reactions with 1-fluoro-4-iodobenzene under Pd(PPh3 )4 and CuBr catalysis. 77 Se NMR resonance frequencies and 1 JC4-Se as well as 1 JC4-H coupling constants have been determined to gain knowledge about the electronic properties of the anionic N-heterocyclic carbenes. The carbene carbon atom of the sydnone methide anion 3 j resonates at δ=155.2 ppm in 13 C NMR spectroscopy at -40 °C which is extremely shifted upfield in comparison to classical N-heterocyclic carbenes.
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Affiliation(s)
- Sebastian Mummel
- Clausthal University of TechnologyInstitute of Organic ChemistryLeibnizstrasse 6D-38678Clausthal-ZellerfeldGermany
| | - Felix Lederle
- Clausthal University of TechnologyInstitute of Organic ChemistryLeibnizstrasse 6D-38678Clausthal-ZellerfeldGermany
- Fraunhofer Heinrich Hertz Institute HHIFiber Optical Sensor SystemsAm Stollen 19HD-38640GoslarGermany
| | - Eike G. Hübner
- Clausthal University of TechnologyInstitute of Organic ChemistryLeibnizstrasse 6D-38678Clausthal-ZellerfeldGermany
- Fraunhofer Heinrich Hertz Institute HHIFiber Optical Sensor SystemsAm Stollen 19HD-38640GoslarGermany
| | - Jan C. Namyslo
- Clausthal University of TechnologyInstitute of Organic ChemistryLeibnizstrasse 6D-38678Clausthal-ZellerfeldGermany
| | - Martin Nieger
- University of HelsinkiDepartment of ChemistryP.O. Box 55FIN-00014HelsinkiFinland
| | - Andreas Schmidt
- Clausthal University of TechnologyInstitute of Organic ChemistryLeibnizstrasse 6D-38678Clausthal-ZellerfeldGermany
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Mummel S, Lederle F, Hübner EG, Namyslo JC, Nieger M, Schmidt A. Sydnonmethide – fast vergessene Mesoionen als Vorläufermoleküle von anionischen N‐heterocyclischen Carbenen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Sebastian Mummel
- Technische Universität Clausthal Institut für Organische Chemie Leibnizstrasse 6 38678 Clausthal-Zellerfeld Deutschland
| | - Felix Lederle
- Technische Universität Clausthal Institut für Organische Chemie Leibnizstrasse 6 38678 Clausthal-Zellerfeld Deutschland
- Fraunhofer Heinrich-Hertz-Institut HHI Faseroptische Sensorsysteme Am Stollen 19H 38640 Goslar Deutschland
| | - Eike G. Hübner
- Technische Universität Clausthal Institut für Organische Chemie Leibnizstrasse 6 38678 Clausthal-Zellerfeld Deutschland
- Fraunhofer Heinrich-Hertz-Institut HHI Faseroptische Sensorsysteme Am Stollen 19H 38640 Goslar Deutschland
| | - Jan C. Namyslo
- Technische Universität Clausthal Institut für Organische Chemie Leibnizstrasse 6 38678 Clausthal-Zellerfeld Deutschland
| | - Martin Nieger
- Universität Helsinki Department für Chemie P.O. Box 55 00014 Helsinki Finnland
| | - Andreas Schmidt
- Technische Universität Clausthal Institut für Organische Chemie Leibnizstrasse 6 38678 Clausthal-Zellerfeld Deutschland
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Porte K, Riomet M, Figliola C, Audisio D, Taran F. Click and Bio-Orthogonal Reactions with Mesoionic Compounds. Chem Rev 2021; 121:6718-6743. [PMID: 33238101 DOI: 10.1021/acs.chemrev.0c00806] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Click and bio-orthogonal reactions are dominated by cycloaddition reactions in general and 1,3-dipolar cycloadditions in particular. Among the dipoles routinely used for click chemistry, azides, nitrones, isonitriles, and nitrile oxides are the most popular. This review is focused on the emerging click chemistry that uses mesoionic compounds as dipole partners. Mesoionics are a very old family of molecules, but their use as reactants for click and bio-orthogonal chemistry is quite recent. The facility to derivatize these dipoles and to tune their reactivity toward cycloaddition reactions makes mesoionics an attractive opportunity for future click chemistry development. In addition, some compounds from this family are able to undergo click-and-release reactions, finding interesting applications in cells, as well as in animals. This review covers the synthetic access to main mesoionics, their reaction with dipolarophiles, and recent applications in chemical biology and heterocycle synthesis.
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Affiliation(s)
- Karine Porte
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
| | - Margaux Riomet
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
| | - Carlotta Figliola
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
| | - Davide Audisio
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
| | - Frédéric Taran
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
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9
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Pyrazole Scaffold Synthesis, Functionalization, and Applications in Alzheimer's Disease and Parkinson's Disease Treatment (2011-2020). Molecules 2021; 26:molecules26051202. [PMID: 33668128 PMCID: PMC7956461 DOI: 10.3390/molecules26051202] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/20/2021] [Accepted: 02/22/2021] [Indexed: 11/17/2022] Open
Abstract
The remarkable prevalence of pyrazole scaffolds in a versatile array of bioactive molecules ranging from apixaban, an anticoagulant used to treat and prevent blood clots and stroke, to bixafen, a pyrazole-carboxamide fungicide used to control diseases of rapeseed and cereal plants, has encouraged both medicinal and organic chemists to explore new methods in developing pyrazole-containing compounds for different applications. Although numerous synthetic strategies have been developed in the last 10 years, there has not been a comprehensive overview of synthesis and the implication of recent advances for treating neurodegenerative disease. This review first presents the advances in pyrazole scaffold synthesis and their functionalization that have been published during the last decade (2011-2020). We then narrow the focus to the application of these strategies in the development of therapeutics for neurodegenerative diseases, particularly for Alzheimer's disease (AD) and Parkinson's disease (PD).
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11
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Bouton J, Van Calenbergh S, Hullaert J. Sydnone Ribosides as a Platform for the Synthesis of Pyrazole C-Nucleosides: A Unified Synthesis of Formycin B and Pyrazofurin. Org Lett 2020; 22:9287-9291. [PMID: 33210930 DOI: 10.1021/acs.orglett.0c03523] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The C-nucleoside natural products formycin B and pyrazofurin were synthesized in seven steps employing a sydnone riboside as common intermediate. Sydnone ribosides were synthesized via a direct Lewis acid catalyzed dehydrative glycosylation reaction. We demonstrated that these can be used for the diversity-oriented synthesis of pyrazole C-nucleoside analogues via thermal 1,3-dipolar cycloaddition reactions with various alkynes, giving access to the pyrazole C-nucleoside natural products, as well as opening new avenues for exploring nucleoside chemical space.
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Affiliation(s)
- Jakob Bouton
- Laboratory for Medicinal Chemistry, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Jan Hullaert
- Laboratory for Medicinal Chemistry, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
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