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Mazzarella D, Stanić J, Bernús M, Mehdi AS, Henderson CJ, Boutureira O, Noël T. In-Flow Generation of Thionyl Fluoride (SOF 2) Enables the Rapid and Efficient Synthesis of Acyl Fluorides from Carboxylic Acids. JACS AU 2024; 4:2989-2994. [PMID: 39211602 PMCID: PMC11350575 DOI: 10.1021/jacsau.4c00318] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 06/11/2024] [Accepted: 06/11/2024] [Indexed: 09/04/2024]
Abstract
Herein, we report an approach for generating thionyl fluoride (SOF2) from the commodity chemicals thionyl chloride (SOCl2) and potassium fluoride (KF). The methodology relies on a microfluidic device that can efficiently produce and dose this toxic gaseous reagent under extremely mild and safe conditions. Subsequently, the in situ-generated thionyl fluoride is reacted with an array of structurally and electronically differing carboxylic acids, leading to the direct and efficient synthesis of highly sought-after acyl fluorides. Importantly, our investigation also highlights the inherent modularity of this flow-based platform. We demonstrate the adaptability of this approach by not only synthesizing acyl fluorides but also directly converting carboxylic acids into a diverse array of valuable compounds such as esters, thioesters, amides, and ketones. This versatility showcases the potential of this approach for a wide range of synthetic applications, underscoring its significance in the realm of chemical synthesis.
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Affiliation(s)
- Daniele Mazzarella
- Flow
Chemistry Group, Van’t Hoff Institute for Molecular Sciences
(HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
- Department
of Chemical Sciences, University of Padova, Via Francesco Marzolo 1, 35131 Padova, Italy
| | - Jelena Stanić
- Flow
Chemistry Group, Van’t Hoff Institute for Molecular Sciences
(HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Miguel Bernús
- Departament
de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Carrer Marcel·lí Domingo
1, 43007 Tarragona, Spain
| | - Arad Seyed Mehdi
- Flow
Chemistry Group, Van’t Hoff Institute for Molecular Sciences
(HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Cassandra J. Henderson
- Flow
Chemistry Group, Van’t Hoff Institute for Molecular Sciences
(HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Omar Boutureira
- Departament
de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Carrer Marcel·lí Domingo
1, 43007 Tarragona, Spain
| | - Timothy Noël
- Flow
Chemistry Group, Van’t Hoff Institute for Molecular Sciences
(HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
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2
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Lisboa AVRD, Duran-Camacho G, Ehrlacher AK, Lasky MR, Sanford MS. Deoxyfluorination of Carboxylic Acids via an In Situ Generated Trifluoromethoxide Salt. Org Lett 2023; 25:9025-9029. [PMID: 38064366 PMCID: PMC10774922 DOI: 10.1021/acs.orglett.3c03706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
An in situ generated pyridinium trifluoromethoxide salt (PyOCF3) is a highly effective deoxyfluorination reagent for the synthesis of acid fluorides. PyOCF3 is formed at room temperature from the reaction of 2,4-dinitro(trifluoromethoxy)benzene with 4-dimethylaminopyridine. PyOCF3 undergoes slow release of fluorophosgene and fluoride, which serve as the electrophile and nucleophile, respectively, for deoxyfluorination. A wide substrate scope and high functional group tolerance are demonstrated. Furthermore, the acid fluorides can be purified by filtration and telescoped to various known reactions.
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Affiliation(s)
- Al Vicente Riano D Lisboa
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Geraldo Duran-Camacho
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Annika K Ehrlacher
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Matthew R Lasky
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Melanie S Sanford
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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3
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Zou Z, Chang W, Zhang W, Ni S, Pan Y, Liang Y, Pan D, Wang Y. CuCF3 Mediated Deoxyfluorination of Redox-active Esters. J Fluor Chem 2023. [DOI: 10.1016/j.jfluchem.2023.110114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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Vallée Y, Youssef-Saliba S. Sulfur Amino Acids: From Prebiotic Chemistry to Biology and Vice Versa. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1472-7914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractTwo sulfur-containing amino acids are included in the list of the 20 classical protein amino acids. A methionine residue is introduced at the start of the synthesis of all current proteins. Cysteine, thanks to its thiol function, plays an essential role in a very large number of catalytic sites. Here we present what is known about the prebiotic synthesis of these two amino acids and homocysteine, and we discuss their introduction into primitive peptides and more elaborate proteins.1 Introduction2 Sulfur Sources3 Prebiotic Synthesis of Cysteine4 Prebiotic Synthesis of Methionine5 Homocysteine and Its Thiolactone6 Methionine and Cystine in Proteins7 Prebiotic Scenarios Using Sulfur Amino Acids8 Introduction of Cys and Met in the Genetic Code9 Conclusion
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Wang Z, Matsumoto A, Maruoka K. Efficient cleavage of tertiary amide bonds via radical-polar crossover using a copper(ii) bromide/Selectfluor hybrid system. Chem Sci 2020; 11:12323-12328. [PMID: 34094440 PMCID: PMC8163011 DOI: 10.1039/d0sc05137c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023] Open
Abstract
A novel approach for the efficient cleavage of the amide bonds in tertiary amides is reported. Based on the selective radical abstraction of a benzylic hydrogen atom by a CuBr2/Selectfluor hybrid system followed by a selective cleavage of an N-C bond, an acyl fluoride intermediate is formed. This intermediate may then be derivatized in a one-pot fashion. The reaction proceeds under mild conditions and exhibits a broad substrate scope with respect to the tertiary amide moiety as well as to nitrogen, oxygen, and carbon nucleophiles for the subsequent derivatization. Mechanistic studies suggest that the present reaction proceeds via a radical-polar crossover process that involves benzylic carbon radicals generated by the selective radical abstraction of a benzylic hydrogen atom by the CuBr2/Selectfluor hybrid system. Furthermore, a synthetic application of this method for the selective cleavage of peptides is described.
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Affiliation(s)
- Zhe Wang
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo Kyoto 606-8501 Japan
| | - Akira Matsumoto
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo Kyoto 606-8501 Japan
| | - Keiji Maruoka
- Graduate School of Pharmaceutical Sciences, Kyoto University Sakyo Kyoto 606-8501 Japan
- School of Chemical Engineering and Light Industry, Guangdong University of Technology Guangzhou 510006 China
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Kim D, Lim HN. Synthesis of Acyl Fluorides via DAST-Mediated Fluorinative C-C Bond Cleavage of Activated Ketones. Org Lett 2020; 22:7465-7469. [PMID: 32929974 DOI: 10.1021/acs.orglett.0c02603] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new protocol for preparation of acyl fluorides was developed by recognizing activated ketones as starting materials. The method provides a different scope compared with previously reported methods that employ carboxylic acids as substrates. A working hypothesis of pull-and-push-driven fluorinative C-C bond cleavage was successfully demonstrated by the simple addition of diethylaminosulfur trifluoride (DAST) derivatives to α-oximinoketones. The designed reaction system led to a highly efficient and chemoselective reaction. The wide availability of the ketones allowed for a range of synthetically useful aryloyl and aliphatic acyl fluorides including those containing chiral skeletons. The method is mild, fast, scalable, and potentially one-pot operative.
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Affiliation(s)
- Danhee Kim
- Eco-Friendly New Materials Research Center, Therapeutics&Biotechnology Division, Korea Research Institute of Chemical Technology(KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea.,Department of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Hee Nam Lim
- Eco-Friendly New Materials Research Center, Therapeutics&Biotechnology Division, Korea Research Institute of Chemical Technology(KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
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Affiliation(s)
| | - Yohei Ogiwara
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
| | - Norio Sakai
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
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Yoshii T, Tsuzuki S, Sakurai S, Sakamoto R, Jiang J, Hatanaka M, Matsumoto A, Maruoka K. N-Hydroxybenzimidazole as a structurally modifiable platform for N-oxyl radicals for direct C-H functionalization reactions. Chem Sci 2020; 11:5772-5778. [PMID: 32832053 PMCID: PMC7416693 DOI: 10.1039/d0sc02134b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 05/16/2020] [Indexed: 11/21/2022] Open
Abstract
A novel class of N-oxy radicals based on flexibly modifiable N-hydroxybenzimidazole skeleton was designed and applied to C–H functionalization reactions.
Methods for direct functionalization of C–H bonds mediated by N-oxyl radicals constitute a powerful tool in modern organic synthesis. While several N-oxyl radicals have been developed to date, the lack of structural diversity for these species has hampered further progress in this field. Here we designed a novel class of N-oxyl radicals based on N-hydroxybenzimidazole, and applied them to the direct C–H functionalization reactions. The flexibly modifiable features of these structures enabled facile tuning of their catalytic performance. Moreover, with these organoradicals, we have developed a metal-free approach for the synthesis of acyl fluorides via direct C–H fluorination of aldehydes under mild conditions.
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Affiliation(s)
- Tomomi Yoshii
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan .
| | - Saori Tsuzuki
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan .
| | - Shunya Sakurai
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan .
| | - Ryu Sakamoto
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan .
| | - Julong Jiang
- Institute for Research Initiatives , Division for Research Strategy , Graduate School of Materials Science , Data Science Center , Nara Institute of Science and Technology , Ikoma , Nara 630-0192 , Japan
| | - Miho Hatanaka
- Institute for Research Initiatives , Division for Research Strategy , Graduate School of Materials Science , Data Science Center , Nara Institute of Science and Technology , Ikoma , Nara 630-0192 , Japan.,PRESTO , Japan Science and Technology (JST) , 4-1-8 Honcho , Kawaguchi , Saitama 332-0012 , Japan
| | - Akira Matsumoto
- Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo , Kyoto 606-8501 , Japan
| | - Keiji Maruoka
- Department of Chemistry , Graduate School of Science , Kyoto University , Sakyo , Kyoto 606-8502 , Japan . .,Graduate School of Pharmaceutical Sciences , Kyoto University , Sakyo , Kyoto 606-8501 , Japan.,School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , China
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Ogiwara Y, Sakai N. Acyl Fluorides in Late‐Transition‐Metal Catalysis. Angew Chem Int Ed Engl 2020; 59:574-594. [DOI: 10.1002/anie.201902805] [Citation(s) in RCA: 100] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/01/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Yohei Ogiwara
- Department of Pure and Applied ChemistryFaculty of Science and TechnologyTokyo University of Science Noda Chiba 278-8510 Japan
| | - Norio Sakai
- Department of Pure and Applied ChemistryFaculty of Science and TechnologyTokyo University of Science Noda Chiba 278-8510 Japan
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Ogiwara Y, Sakai N. Carbonsäurefluoride in der Katalyse durch späte Übergangsmetalle. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902805] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yohei Ogiwara
- Department of Pure and Applied ChemistryFaculty of Science and TechnologyTokyo University of Science Noda Chiba 278-8510 Japan
| | - Norio Sakai
- Department of Pure and Applied ChemistryFaculty of Science and TechnologyTokyo University of Science Noda Chiba 278-8510 Japan
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Ogiwara Y, Iino Y, Sakai N. Catalytic C-H/C-F Coupling of Azoles and Acyl Fluorides. Chemistry 2019; 25:6513-6516. [PMID: 30941769 DOI: 10.1002/chem.201901219] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 03/31/2019] [Indexed: 01/14/2023]
Abstract
A method for the palladium/copper-catalyzed direct acylation of azoles with acyl fluorides is described. This study reports the first examples of acyl fluorides being used as acylation reagents in transition-metal-catalyzed aromatic C-H bond functionalization reactions. Depending on the reaction temperature, decarbonylative coupling may also occur. Mechanistic studies suggest that the cleavage of the aromatic C-H bond, promoted by a copper-phosphine species, is not the rate-limiting step of this acylation.
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Affiliation(s)
- Yohei Ogiwara
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 2, 78-8510, Japan
| | - Yurika Iino
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 2, 78-8510, Japan
| | - Norio Sakai
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 2, 78-8510, Japan
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