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Li Y, Briand M, Miqueu K, Anselmi E, Magnier E, Dagousset G. Electrophilic Fluorination of Silyl Dienol Ethers: a General and Selective Access to γ-Fluoro Enals. Chemistry 2024; 30:e202303545. [PMID: 38055212 DOI: 10.1002/chem.202303545] [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: 10/26/2023] [Revised: 12/04/2023] [Accepted: 12/06/2023] [Indexed: 12/07/2023]
Abstract
We describe the direct synthesis of γ-fluoro enals from the corresponding silyl dienol ethers. This simple process operates under mild conditions and is compatible with a wide range of functionalities. The high γ regioselectivity of this protocol was rationalized by means of theoretical calculations.
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Affiliation(s)
- Yang Li
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 45 avenue des Etats-Unis, 78000, Versailles, France
| | - Marina Briand
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 45 avenue des Etats-Unis, 78000, Versailles, France
| | - Karinne Miqueu
- CNRS/Université de Pau et des Pays de l'Adour, E2S-UPPA, Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM UMR 5254), Hélioparc, 2 Avenue du Président Angot, 64053, Pau Cedex 09, France
| | - Elsa Anselmi
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 45 avenue des Etats-Unis, 78000, Versailles, France
- Université de Tours, Faculté des Sciences et Techniques, 37200, Tours, France
| | - Emmanuel Magnier
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 45 avenue des Etats-Unis, 78000, Versailles, France
| | - Guillaume Dagousset
- Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 45 avenue des Etats-Unis, 78000, Versailles, France
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Arimitsu S. Syntheses and Synthetic Applications of Functionalized Propargylic and Allylic Fluorides. CHEM REC 2023; 23:e202300021. [PMID: 36912721 DOI: 10.1002/tcr.202300021] [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: 01/20/2023] [Revised: 02/25/2023] [Indexed: 03/14/2023]
Abstract
This account presents the synthesis and application of propargylic and allylic fluorides containing hydroxy or carbonyl functional groups. In particular, the Barbier-type reaction of difluoropropargyl bromides with aldehydes or chloroformates provides versatile propargylic fluorides, and the organocatalytic fluorination of dienamine intermediates has been demonstrated as an effective method to obtain allylic fluorides stereoselectively. Additionally, mechanistic insights into such reactions are discussed with the aid of density functional theory calculations. The report also describes the preparation of fluorinated 1,7-diyne or 1,7-enyne derivatives of these compounds. These propargylic and allylic fluorides can be used as building blocks for fluorinated heterocycles, such as fluorinated furans, tetrahydrofurans, and lactams. Additionally, fluorinated bi- or tri-heterocyclic compounds can be synthesized via transition-metal-catalyzed reactions with fluorinated 1,7-diyne or 1,7-enyne derivatives.
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Affiliation(s)
- Satoru Arimitsu
- Department of Chemistry, Biology, and Marine Science, University of the Ryukyus, 1 Senbaru, Nishihara, Nagagami, Okinawa, 903-0213, Japan
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Ishikawa T, Arimitsu S. Diastereoselective synthesis of γ,γ-disubstituted β-hydroxy α,α-difluoro-γ-butyrolactones. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.110028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Yıldırım A, Kaya Y, Göker M. Screening of simple carbohydrates as a renewable organocatalyst for the efficient construction of 1,3-benzoxazine scaffold. Carbohydr Res 2021; 510:108458. [PMID: 34634551 DOI: 10.1016/j.carres.2021.108458] [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: 06/14/2021] [Revised: 10/03/2021] [Accepted: 10/05/2021] [Indexed: 11/25/2022]
Abstract
A convenient protocol for the two component preparation of 1,3-benzoxazines by using several protected and unprotected carbohydrate molecules as organocatalysts have been developed which is broadly applicable to condensation reaction between variety of Mannich bases and paraformaldehyde. This study revealed that fructose have much higher catalytic activity than the other carbohydrates and can be an alternative to metal-containing catalysts as a green renewable organocatalyst for efficient and rapid construction of 1,3-benzoxazine skeleton. In this context, 21 benzoxazine compounds were successfully synthesized and spectral characterizations of these compounds were carried out by spectroscopic methods and elemental analysis. Furthermore, density functional theory (DFT) calculations have been performed to study the detailed mechanism of organocatalyst assisted synthesis of the benzoxazine monomers. The results obtained from these calculations showed that the more realistic reaction pathway involves formation of a phenolate based intermediate which loses a water molecule to form benzenaminium ion. Subsequently, this ion provides the formation of the corresponding benzoxazines with good yields through the intramolecular ring closure step.
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Affiliation(s)
- Ayhan Yıldırım
- Department of Chemistry, Faculty of Arts and Sciences, Bursa Uludağ University, P. O. Box 16059, Bursa, Turkey.
| | - Yunus Kaya
- Department of Chemistry, Faculty of Natural Sciences, Architecture and Engineering, Bursa Technical University, Bursa, 16310, Turkey
| | - Mustafa Göker
- Department of Chemistry, Faculty of Arts and Sciences, Bursa Uludağ University, P. O. Box 16059, Bursa, Turkey
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Regio- and Enantioselective α,γ-Dialkylation of α,β-Unsaturated Aldehydes Through Cascade Organocatalysis. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Cui L, You Y, Mi X, Luo S. Asymmetric Fluorination of α-Branched Aldehydes by Chiral Primary Amine Catalysis: Reagent-Controlled Enantioselectivity Switch. J Org Chem 2018; 83:4250-4256. [DOI: 10.1021/acs.joc.8b00279] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Linfeng Cui
- College of Chemistry, Beijing Normal University, Xinjiekouwai Street 19, Beijing 100875, China
| | - Yang’en You
- Key Laboratory for Molecular Recognition and Function, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China
| | - Xueling Mi
- College of Chemistry, Beijing Normal University, Xinjiekouwai Street 19, Beijing 100875, China
| | - Sanzhong Luo
- Key Laboratory for Molecular Recognition and Function, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100190, China
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Arimitsu S, Nakasone M, Gima E. Diastereoselective synthesis of 5,5-disubstituted 3,3-difluorotetrahydrofurans. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Insights into chemoselective fluorination reaction of alkynals via N-heterocyclic carbene and Brønsted base cooperative catalysis. Theor Chem Acc 2017. [DOI: 10.1007/s00214-017-2127-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zhou J, Jiang X, Jin C, Guo Z, Su B, Su W. One-Pot l
-Proline-Mediated Stereoselective α-C(sp2
)-H Fluorination of α,β-Unsaturated Aldehydes through Methoxyfluorination-Elimination. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700622] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jiadi Zhou
- Collaborative Innovation Center of Yangtze River Delta Region; Green Pharmaceuticals; Zhejiang University of Technology; 310014 Hangzhou China
| | - Xinpeng Jiang
- College of Pharmaceutical Sciences; Zhejiang University of Technology; 310014 Hangzhou China
| | - Can Jin
- College of Pharmaceutical Sciences; Zhejiang University of Technology; 310014 Hangzhou China
| | - Zhicheng Guo
- Collaborative Innovation Center of Yangtze River Delta Region; Green Pharmaceuticals; Zhejiang University of Technology; 310014 Hangzhou China
| | - Bin Su
- Collaborative Innovation Center of Yangtze River Delta Region; Green Pharmaceuticals; Zhejiang University of Technology; 310014 Hangzhou China
| | - Weike Su
- Collaborative Innovation Center of Yangtze River Delta Region; Green Pharmaceuticals; Zhejiang University of Technology; 310014 Hangzhou China
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Arimitsu S, Yonamine T, Higashi M. Cinchona-Based Primary Amine Catalyzed a Proximal Functionalization of Dienamines: Asymmetric α-Fluorination of α-Branched Enals. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01178] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Satoru Arimitsu
- Department of Chemistry,
Biology and Marine Science, University of the Ryukyus, Senbaru
1, Nakagami, Nishihara, Okinawa 903-0213, Japan
| | - Tsunaki Yonamine
- Department of Chemistry,
Biology and Marine Science, University of the Ryukyus, Senbaru
1, Nakagami, Nishihara, Okinawa 903-0213, Japan
| | - Masahiro Higashi
- Department of Chemistry,
Biology and Marine Science, University of the Ryukyus, Senbaru
1, Nakagami, Nishihara, Okinawa 903-0213, Japan
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Stereoselective synthesis of α,α-difluoro-β,γ-alkenyl ketones by free-radical reaction of iododifluoromethyl ketones with alkynes. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.05.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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