1
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Bouzbouz S. Fluoride-Catalyzed Cross-Coupling of Silylamides to CF 3-Acrylates: Access to Highly Functionalized Trifluoromethylated and Quaternary Fluorinated Molecular Architectures. Org Lett 2024; 26:6130-6135. [PMID: 39018383 DOI: 10.1021/acs.orglett.4c01895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/19/2024]
Abstract
A direct and simple catalytic coupling of nonfluorinated and fluorinated silylbutenamides with β-CF3 α,β-unsaturated esters mediated by fluoride ion was carried out. The transformation proceeded with excellent yields to afford new, highly functionalized trifluoromethylated and quaternary fluorinated products.
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Affiliation(s)
- Samir Bouzbouz
- CNRS, University of Rouen, INSA of Rouen, COBRA UMR 6014, 1 rue Lucien Tesnière, 76131 Mont Saint Aignan, France
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2
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Higashi Y, Shima K, Suzuki M, Fujishiro M, Kawai T, Morimoto T. Synthetic Utilization of 2 H-Heptafluoropropane: Ionic 1,4-Addition to Electron-Deficient Carbon-Carbon Unsaturated Bonds. J Org Chem 2024; 89:3962-3969. [PMID: 38443796 PMCID: PMC10949241 DOI: 10.1021/acs.joc.3c02798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/13/2024] [Accepted: 02/23/2024] [Indexed: 03/07/2024]
Abstract
We have found a novel method for introducing heptafluoro-2-propyl CF(CF3)2 groups into carbon-carbon unsaturated bonds via a nucleophilic reaction using 2H-heptafluoropropane as the source of CF(CF3)2 groups. The reaction involves the nucleophilic addition of a heptafluoro-2-propyl anion, generated by treating 2H-heptafluoropropane with a fluoride ion, to various electron-deficient unsaturated compounds. This allows the easy synthesis of various aliphatic compounds containing heptafluoro-2-propyl groups.
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Affiliation(s)
- Yusuke Higashi
- Division
of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
| | - Kotono Shima
- Division
of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
| | - Mikiya Suzuki
- Division
of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
| | - Moe Fujishiro
- Technology
and Innovation Center, Daikin Industries,
Ltd., Osaka 566-8585, Japan
| | - Tsuyoshi Kawai
- Division
of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
| | - Tsumoru Morimoto
- Division
of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
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3
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Murata Y, Hada K, Aggarwal T, Escorihuela J, Shibata N. Transition-Metal-Free Approach for Z-Vinyl Fluorides by Hydrofluorination of Alkynes bearing SF 4 and SF 5 Groups. Angew Chem Int Ed Engl 2024; 63:e202318086. [PMID: 38206172 DOI: 10.1002/anie.202318086] [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: 11/27/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 01/12/2024]
Abstract
The synthesis of vinyl fluorides plays a crucial role in various scientific disciplines, including pharmaceutical and materials sciences. Herein, we present a direct and stereoselective hydrofluorination method for the synthesis of Z isomers of vinyl fluorides from alkynes containing unexplored SF5 and SF4 groups. Our strategy employed tetrabutylammonium fluoride (TBAF) as a fluorine source. It demonstrates high compatibility with aryls, biaryls, heteroaryls, and tert-alkyl groups, allowing facile incorporation of SF5 and SF4 groups across the triple bond without any transition-metal catalysts. This approach avoids the potential decomposition of the SF5 or SF4 units via coordination with transition metals or acidic protic sources. Remarkably, this transformation proceeded at room temperature without any additional additives, providing the Z isomer of vinyl fluorides in excellent yield and high selectivity. The presence of a water molecule as a hydrate in TBAF is essential for efficient conversion. This methodology opens new avenues for the synthesis of enchanting SF5 - and SF4 -containing fluorinated vinylic scaffolds, thereby providing advanced opportunities for novel drug discovery and fluorinated polymers.
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Affiliation(s)
- Yusuke Murata
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Kenshiro Hada
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Trapti Aggarwal
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya, 466-8555, Japan
| | - Jorge Escorihuela
- Departamento de Química Orgánica, Universitat de València, Avda. Vicente Andrés Estellés s/n, Burjassot, 46100, Valencia, Spain
| | - Norio Shibata
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya, 466-8555, Japan
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology Gokiso, Showa-ku, Nagoya, 466-8555, Japan
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4
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Carlotti M, Losi T, De Boni F, Vivaldi FM, Araya-Hermosilla E, Prato M, Pucci A, Caironi M, Mattoli V. Preparation of different conjugated polymers characterized by complementary electronic properties from an identical precursor. Polym Chem 2023; 14:4465-4473. [PMID: 38013925 PMCID: PMC10548785 DOI: 10.1039/d3py00868a] [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: 07/26/2023] [Accepted: 09/01/2023] [Indexed: 11/29/2023]
Abstract
The possibility of generating regions with different electronic properties within the same organic semiconductor thin film could offer novel opportunities for designing and fabricating organic electronic devices and circuits. This study introduces a new approach based on a novel type of highly processable polymer precursor that can yield two different conjugated polymers characterized by complementary electronic properties, i.e. promoting electron or hole transport, from the same starting material. In particular, these multipotent precursors comprise functionalized dihydroanthracene units that can offer several functionalization opportunities to improve the solubility or insert specific functionalities. This strategy also allows for the preparation of high-molecular-weight conjugated polymers comprising diethynylanthracene and anthraquinone units without the need for solubilizing side chains. Thin films of the polymer precursor can be used, after solid-state transformations, to prepare single organic layers comprising regions characterized by different chemical nature and electronic properties. Here, we present a detailed characterization of the chemical and electronic properties of the precursor and the obtained conjugated polymers, showing how it is possible to harvest their characteristics for potential applications such as electrochromic surfaces and organic field-effect transistors.
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Affiliation(s)
- Marco Carlotti
- Dipartimento di Chimica e Chimica Industriale, University of Pisa Via G. Moruzzi 13 56124 Pisa Italy
- Center for Materials Interfaces, Istituto Italiano di Tecnologia Viale Rinaldo Piaggio 34 56025 Pontedera Italy
- Centro per la Integrazione Della Strumentazione Dell'Università di Pisa (CISUP), University of Pisa Lungarno Pacinotti 43/44 56126 Pisa Italy
| | - Tommaso Losi
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia Via R. Rubattino 81 20134 Milano Italy
| | - Francesco De Boni
- Materials Characterization Facility, Istituto Italiano di Tecnologia Via Morego 30 16163 Genova Italy
| | - Federico Maria Vivaldi
- Dipartimento di Chimica e Chimica Industriale, University of Pisa Via G. Moruzzi 13 56124 Pisa Italy
| | - Esteban Araya-Hermosilla
- Center for Materials Interfaces, Istituto Italiano di Tecnologia Viale Rinaldo Piaggio 34 56025 Pontedera Italy
| | - Mirko Prato
- Materials Characterization Facility, Istituto Italiano di Tecnologia Via Morego 30 16163 Genova Italy
| | - Andrea Pucci
- Dipartimento di Chimica e Chimica Industriale, University of Pisa Via G. Moruzzi 13 56124 Pisa Italy
- Centro per la Integrazione Della Strumentazione Dell'Università di Pisa (CISUP), University of Pisa Lungarno Pacinotti 43/44 56126 Pisa Italy
| | - Mario Caironi
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia Via R. Rubattino 81 20134 Milano Italy
| | - Virgilio Mattoli
- Center for Materials Interfaces, Istituto Italiano di Tecnologia Viale Rinaldo Piaggio 34 56025 Pontedera Italy
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5
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Tzanetopoulos E, Schwartz J, Gamelin DR. HF-Free synthesis of colloidal Cs 2ZrF 6 and (NH 4) 2ZrF 6 nanocrystals. Chem Commun (Camb) 2023; 59:5451-5454. [PMID: 37067805 DOI: 10.1039/d3cc00374d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
A solution-phase synthesis of colloidally stable A2BF6 nanocrystals is reported for the first time, focusing on A+ = Cs+, NH4+ and B4+ = Zr4+. Handling hypertoxic HF is avoided by using NH4F and a low-boiling-point alcohol, representing the first synthesis of any A2BF6 nanocrystals without HF addition. The chemical incompatability of Zr4+ with other common fluoride sources is discussed.
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Affiliation(s)
- Eden Tzanetopoulos
- Department of Chemistry, University of Washington, Seattle, Washington, 98195-1700, USA.
| | - Julie Schwartz
- Department of Chemistry, University of Washington, Seattle, Washington, 98195-1700, USA.
| | - Daniel R Gamelin
- Department of Chemistry, University of Washington, Seattle, Washington, 98195-1700, USA.
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6
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Nucleophilic Reactions Using Alkali Metal Fluorides Activated by Crown Ethers and Derivatives. Catalysts 2023. [DOI: 10.3390/catal13030479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Abstract
We review crown ether-facilitated nucleophilic reactions using metal salts, presenting the studies using kinetic measurements and quantum chemical methods. We focus on the mechanistic features, specifically on the contact ion-pair (CIP) mechanism of metal salts for nucleophilic processes promoted by crown ethers and derivatives. Experimental verification of the CIP form of the metal salt CsF complexed with [18-Crown-6] by H-NMR spectroscopy is described. The use of chiral crown ethers and derivatives for enantioselective nucleophilic processes is also discussed.
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