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Weiss R, Aubert E, Groslambert L, Pale P, Mamane V. Evidence for and evaluation of fluorine-tellurium chalcogen bonding. Chem Sci 2023; 14:7221-7229. [PMID: 37416727 PMCID: PMC10321537 DOI: 10.1039/d3sc00849e] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 06/03/2023] [Indexed: 07/08/2023] Open
Abstract
In the field of noncovalent interactions, chalcogen bonding (ChB) involving the tellurium atom is currently attracting much attention in supramolecular chemistry and in catalysis. However, as a prerequisite for its application, the ChB should be studied in solution to assess its formation and, if possible, to evaluate its strength. In this context, new tellurium derivatives bearing CH2F and CF3 groups were designed to exhibit Te⋯F ChB and were synthesized in good to high yields. In both types of compounds, Te⋯F interactions were characterized in solution by combining 19F, 125Te and HOESY NMR techniques. These Te⋯F ChBs were shown to contribute to the overall JTe-F coupling constants (94-170 Hz) measured in the CH2F- and CF3-based tellurium derivatives. Finally, a variable temperature NMR study allowed us to approximate the energy of the Te⋯F ChB, from 3 kJ mol-1 for the compounds with weak Te σ-holes to 11 kJ mol-1 for Te σ-holes activated by the presence of strong electron withdrawing substituents.
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Affiliation(s)
- Robin Weiss
- LASYROC, UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
| | | | - Loic Groslambert
- LASYROC, UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
| | - Patrick Pale
- LASYROC, UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
| | - Victor Mamane
- LASYROC, UMR 7177, University of Strasbourg 1 Rue Blaise Pascal 67000 Strasbourg France
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Wegener D, Hoffmann KF, Pérez-Bitrián A, Bayindir I, Hadi AN, Wiesner A, Riedel S. Air-stable aryl derivatives of pentafluoroorthotellurate. Chem Commun (Camb) 2022; 58:9694-9697. [PMID: 35959700 PMCID: PMC9404409 DOI: 10.1039/d2cc03936b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We report on two different sets of air-stable derivatives of pentafluoroorthotellurate containing fluorinated and non-fluorinated aryl groups. The acid cis-PhTeF4OH was obtained in gram scale and further transformed to Ag[cis-PhTeF4O], which was used as a cis-PhTeF4O transfer reagent to obtain [PPh4][cis-PhTeF4O]. Furthermore, the synthesis of trans-(C6F5)2TeF3OH was achieved by a selective hydrolysis of trans-(C6F5)2TeF4 in the presence of KF and subsequent protonation by aHF. Quantum-chemical calculations show a higher acidity and robustness against fluoride abstraction for trans-(C6F5)2TeF3OH compared to cis-PhTeF4OH. The synthesis of air-stable aryl derivatives of OTeF5 has been achieved through the use of convenient procedures. Pentafluorophenyl derivatives are stronger acids and more robust against electrophiles in comparison to phenyl analogues.![]()
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Affiliation(s)
- Daniel Wegener
- Fachbereich Biologie, Chemie, Pharmazie, Institut für Chemie und Biochemie - Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195 Berlin, Germany.
| | - Kurt F Hoffmann
- Fachbereich Biologie, Chemie, Pharmazie, Institut für Chemie und Biochemie - Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195 Berlin, Germany.
| | - Alberto Pérez-Bitrián
- Fachbereich Biologie, Chemie, Pharmazie, Institut für Chemie und Biochemie - Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195 Berlin, Germany.
| | - Ilayda Bayindir
- Fachbereich Biologie, Chemie, Pharmazie, Institut für Chemie und Biochemie - Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195 Berlin, Germany.
| | - Amiera N Hadi
- Fachbereich Biologie, Chemie, Pharmazie, Institut für Chemie und Biochemie - Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195 Berlin, Germany.
| | - Anja Wiesner
- Fachbereich Biologie, Chemie, Pharmazie, Institut für Chemie und Biochemie - Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195 Berlin, Germany.
| | - Sebastian Riedel
- Fachbereich Biologie, Chemie, Pharmazie, Institut für Chemie und Biochemie - Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34/36, 14195 Berlin, Germany.
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Lu L, Zhao XJ, Dessie W, Xia X, Duan X, He J, Wang R, Liu Y, Wu C. Visible-light-promoted trifluoromethylselenolation of ortho-hydroxyarylenaminones. Org Biomol Chem 2022; 20:1754-1758. [DOI: 10.1039/d1ob02402g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Development of an efficient process that employs easy to handle and shelf-stable reagents for the synthesis of trifluoromethylselenylated heterocyclics remains a daunting challenge in organic synthesis. Herein, we report a...
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Bonnefoy C, Chefdeville E, Panosian A, Hanquet G, Leroux FR, Toulgoat F, Billard T. Study of a Stable "Trifluoromethoxide Anion Solution" Arising from 2,4-Dinitro-Trifluoromethoxybenzene. Chemistry 2021; 27:15986-15991. [PMID: 34496078 DOI: 10.1002/chem.202102809] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Indexed: 12/14/2022]
Abstract
Despite recent advances, trifluoromethoxylation remains a challenging reaction. Here we describe an efficient trifluoromethoxylative substitution, using an inexpensive and easy-to-handle reagent. By mixing DMAP with a slight excess of 1,4-dinitro-trifluoromethoxybenzene (DNTFB), a stable solution of trifluoromethoxide anion is obtained and can be used to perform a SN 2 reaction without any silver additives. A precise study of the properties and behavior of this unusual stable solution of CF3 O- species is also performed.
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Affiliation(s)
- Clémence Bonnefoy
- Institute of Chemistry and Biochemistry (ICBMS-UMR CNRS 5246), Univ Lyon, CNRS, Université Lyon 1, 43 Bd du 11 Novembre 1918, 69622, Lyon, France
| | - Emmanuel Chefdeville
- NMR Centre, Univ Lyon, Université Lyon 1, CNRS, 43 Bd du 11 novembre 1918, 69622, Lyon, France
| | - Armen Panosian
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 67000, Strasbourg, France
| | - Gilles Hanquet
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 67000, Strasbourg, France
| | - Frédéric R Leroux
- Université de Strasbourg, Université de Haute-Alsace, CNRS, UMR 7042-LIMA, ECPM, 67000, Strasbourg, France
| | - Fabien Toulgoat
- Institute of Chemistry and Biochemistry (ICBMS-UMR CNRS 5246), Univ Lyon, CNRS, Université Lyon 1, 43 Bd du 11 Novembre 1918, 69622, Lyon, France.,CPE Lyon, Campus LyonTech-La Doua, 43 Bd du 11 novembre 1918, 69616, Villeurbanne, France
| | - Thierry Billard
- Institute of Chemistry and Biochemistry (ICBMS-UMR CNRS 5246), Univ Lyon, CNRS, Université Lyon 1, 43 Bd du 11 Novembre 1918, 69622, Lyon, France.,CERMEP -, In vivo imaging, Groupement Hospitalier Est, 59 Bd Pinel, 69677, Lyon, France
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