1
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Wang L, Qin W. Copper-Initiated Regiodivergent Chloropentafluorosulfanylation of 1,3-Enynes under Substrate Control. Org Lett 2024; 26:5049-5054. [PMID: 38833632 DOI: 10.1021/acs.orglett.4c01768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
A copper-catalyzed regiodivergent chloropentafluorosulfanylation strategy for 1,3-enynes using SF5Cl has been developed. The regioselectivity is dictated by the structural and substitution patterns of 1,3-enynes, enabling facile access to three classes of SF5-containing products: propargylic chlorides, 1,3-dienes, and allenes. The reaction systems involve radical species, where the transfer of a chlorine atom from SF5Cl to a carbon radical is considered the predominant pathway. Diverse types of SF5- building blocks can be synthesized through simple functional group transformations.
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Affiliation(s)
- Lin Wang
- Institute of Frontier Chemistry School of Chemistry and Chemical Engineering, Shandong University, Qingdao 266237, P. R. China
| | - Wenhui Qin
- Institute of Frontier Chemistry School of Chemistry and Chemical Engineering, Shandong University, Qingdao 266237, P. R. China
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2
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Kraemer Y, Buldt JA, Kong WY, Stephens AM, Ragan AN, Park S, Haidar ZC, Patel AH, Shey R, Dagan R, McLoughlin CP, Fettinger JC, Tantillo DJ, Pitts CR. Overcoming a Radical Polarity Mismatch in Strain-Release Pentafluorosulfanylation of [1.1.0]Bicyclobutanes: An Entryway to Sulfone- and Carbonyl-Containing SF 5-Cyclobutanes. Angew Chem Int Ed Engl 2024; 63:e202319930. [PMID: 38237059 PMCID: PMC11045327 DOI: 10.1002/anie.202319930] [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: 12/23/2023] [Indexed: 04/26/2024]
Abstract
The first assortment of achiral pentafluorosulfanylated cyclobutanes (SF5-CBs) are now synthetically accessible through strain-release functionalization of [1.1.0]bicyclobutanes (BCBs) using SF5Cl. Methods for both chloropentafluorosulfanylation and hydropentafluorosulfanylation of sulfone-based BCBs are detailed herein, as well as proof-of-concept that the logic extends to tetrafluoro(aryl)sulfanylation, tetrafluoro(trifluoromethyl)sulfanylation, and three-component pentafluorosulfanylation reactions. The methods presented enable isolation of both syn and anti isomers of SF5-CBs, but we also demonstrate that this innate selectivity can be overridden in chloropentafluorosulfanylation; that is, an anti-stereoselective variant of SF5Cl addition across sulfone-based BCBs can be achieved by using inexpensive copper salt additives. Considering the SF5 group and CBs have been employed individually as nonclassical bioisosteres, structural aspects of these unique SF5-CB "hybrid isosteres" were then contextualized using SC-XRD. From a mechanistic standpoint, chloropentafluorosulfanylation ostensibly proceeds through a curious polarity mismatch addition of electrophilic SF5 radicals to the electrophilic sites of the BCBs. Upon examining carbonyl-containing BCBs, we also observed rare instances whereby radical addition to the 1-position of a BCB occurs. The nature of the key C(sp3)-SF5 bond formation step - among other mechanistic features of the methods we disclose - was investigated experimentally and with DFT calculations. Lastly, we demonstrate compatibility of SF5-CBs with various downstream functionalizations.
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Affiliation(s)
- Yannick Kraemer
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Jón Atiba Buldt
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Wang-Yeuk Kong
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Alexander M Stephens
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Abbey N Ragan
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Soojun Park
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Zane C Haidar
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Ansh Hiten Patel
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Rachel Shey
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Roee Dagan
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Connor P McLoughlin
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - James C Fettinger
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Dean J Tantillo
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Cody Ross Pitts
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
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3
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Kucher H, Wenzel JO, Rombach D. Hydrothiolation of Triisopropylsilyl Acetylene Sulfur Pentafluoride - Charting the Chemical Space of β-SF 5 Vinyl Sulfides. Chempluschem 2024:e202400168. [PMID: 38691830 DOI: 10.1002/cplu.202400168] [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: 04/05/2024] [Revised: 04/30/2024] [Accepted: 04/30/2024] [Indexed: 05/03/2024]
Abstract
Recently, we suggested liquid and high-boiling TIPS-CC-SF5 (TASP) as a versatile reagent to access so far elusive SF5-containing building blocks by less specialized laboratories under bench-top conditions. The synthesis of non-aromatic SF5 building blocks generally requires on-site fluorination or pentafluorosulfanylation steps employing toxic and/or gaseous reagents. Herein, we underline the versatility of this reagent by reporting a benign bench-top protocol for the synthesis of Z-configured β-pentafluorosulfanylated vinyl sulfides in good to excellent yields (up to 99 %) with exclusive (Z)-diasteroselectivity and broad functional group tolerance. This method exploits an in-situ protodesilylation-hydrothiolation sequence. This so far uncharted class of compounds was characterized by means of NMR-spectroscopy as well as SC-XRD. Furthermore, we suggest the reaction to proceed via a kinetically controlled closed-shell reaction pathway, corroborated by in-silico experiments.
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Affiliation(s)
- Hannes Kucher
- Department of Chemistry and Applied Biosciences Zürich, Vladimir-Prelog-Weg 2, CH-8093, Zürich, Switzerland
| | - Jonas O Wenzel
- Department of Chemistry and Applied Biosciences Zürich, Vladimir-Prelog-Weg 2, CH-8093, Zürich, Switzerland
| | - David Rombach
- Department of Chemistry and Applied Biosciences Zürich, Vladimir-Prelog-Weg 2, CH-8093, Zürich, Switzerland
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4
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Wenzel JO, Jester F, Togni A, Rombach D. Hydroamination of Triisopropylsilyl Acetylene Sulfur Pentafluoride - a Bench-top Route to Pentafluorosulfanylated Enamines. Chemistry 2024; 30:e202304015. [PMID: 38079230 DOI: 10.1002/chem.202304015] [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: 12/01/2023] [Indexed: 01/17/2024]
Abstract
Synthetic access to a variety of aliphatic and vinylic pentafluorosulfanylated building blocks remains a major challenge in contemporary organofluorine chemistry hampering its investigation in the context of medicinal chemistry, agrochemistry and functional materials. Herein, we report a bench-top protocol to access the virtually unknown class of α-SF5 -enamines under mild reaction conditions in good to excellent yields (up to 95 %). This reaction combines the protodesilylation of the commercially available precursor TASP with the in situ hydroamination of HC≡C-SF5 . The on-site use of highly toxic gases or corrosive reagents is avoided, making access to this motif applicable to a wide chemical audience. The excellent E-diastereoselectivity of this two-step cascade reaction is suggested to be the result of the convergence of the fast Z-/E- isomerization of a vinyl anion as well as the isomerization of the iminium ion. The remarkable thermal stability of these SF5 -enamines encourages further studies of their synthetic utility.
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Affiliation(s)
- Jonas O Wenzel
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093, Zürich, Switzerland
| | - Fabian Jester
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093, Zürich, Switzerland
| | - Antonio Togni
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093, Zürich, Switzerland
| | - David Rombach
- Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093, Zürich, Switzerland
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5
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Popek L, Cihan M, Blanchard N, Bizet V. Palladium-Catalyzed Regioselective Synthesis of 2-SF 5 -Indenols and Further Derivatizations. Angew Chem Int Ed Engl 2024; 63:e202315909. [PMID: 38116823 DOI: 10.1002/anie.202315909] [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: 10/20/2023] [Revised: 12/14/2023] [Accepted: 12/18/2023] [Indexed: 12/21/2023]
Abstract
A palladium-catalyzed synthesis of 2-SF5 -indenols has been developed by reacting commercially available boronic acid derivatives and readily accessible SF5 -alkynes. The present methodology is fully regioselective thanks to the intrinsic polarization of SF5 -alkynes. A selection of downstream functionalizations has been performed to highlight the versatility of 2-SF5 -indenols and indenones as platforms for the design of more complex SF5 -containing molecules.
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Affiliation(s)
- Lucas Popek
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA, UMR 7042, 68000, Mulhouse, France
| | - Murat Cihan
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA, UMR 7042, 68000, Mulhouse, France
| | - Nicolas Blanchard
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA, UMR 7042, 68000, Mulhouse, France
| | - Vincent Bizet
- Université de Haute-Alsace, Université de Strasbourg, CNRS, LIMA, UMR 7042, 68000, Mulhouse, France
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6
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Giraudo A, Armano E, Morano C, Pallavicini M, Bolchi C. Green Oxidation of Heterocyclic Ketones with Oxone in Water. J Org Chem 2023; 88:15461-15465. [PMID: 37823876 PMCID: PMC10629238 DOI: 10.1021/acs.joc.3c01513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Indexed: 10/13/2023]
Abstract
The recently reported efficient conversion of cyclic ketones to lactones by Oxone in neutral buffered water is extended to heterocyclic ketones, namely, cyclic N-Boc azaketones and oxoethers with the aim of obtaining N-protected azalactones and their analogues with oxygen in place of nitrogen. N-Boc-4-piperidinone and all the cyclic oxoethers were successfully oxidized to lactones, while the azacyclic ketones with nitrogen α-positioned to carbonyl were univocally transformed into N-Boc-ω-amino acids and N-Boc-N-formyl-ω-amino acids operating in alkaline water and DMF, respectively.
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Affiliation(s)
- Alessandro Giraudo
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, via Mangiagalli 25, I-20133, Milano, Italy
| | - Edoardo Armano
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, via Mangiagalli 25, I-20133, Milano, Italy
| | - Camillo Morano
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, via Mangiagalli 25, I-20133, Milano, Italy
| | - Marco Pallavicini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, via Mangiagalli 25, I-20133, Milano, Italy
| | - Cristiano Bolchi
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, via Mangiagalli 25, I-20133, Milano, Italy
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7
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Pickford HD, Ripenko V, McNamee RE, Holovchuk S, Thompson AL, Smith RC, Mykhailiuk PK, Anderson EA. Rapid and Scalable Halosulfonylation of Strain-Release Reagents. Angew Chem Int Ed Engl 2023; 62:e202213508. [PMID: 36226350 PMCID: PMC10100009 DOI: 10.1002/anie.202213508] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Indexed: 11/12/2022]
Abstract
Sulfonylated aromatics are commonplace motifs in drugs and agrochemicals. However, methods for the direct synthesis of sulfonylated non-classical arene bioisosteres, which could improve the physicochemical properties of drug and agrochemical candidates, are limited. Here we report a solution to this challenge: a one-pot halosulfonylation of [1.1.1]propellane, [3.1.1]propellane and bicyclo[1.1.0]butanes that proceeds under practical, scalable and mild conditions. The sulfonyl halides used in this chemistry feature aryl, heteroaryl and alkyl substituents, and are conveniently generated in situ from readily available sulfinate salts and halogen atom sources. This methodology enables the synthesis of an array of pharmaceutically and agrochemically relevant halogen/sulfonyl-substituted bioisosteres and cyclobutanes, on up to multidecagram scale.
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Affiliation(s)
- Helena D Pickford
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Vasyl Ripenko
- Enamine Ltd, Chervonotkatska 78, 02094, Kyiv, Ukraine.,Chemistry Department, Taras Shevchenko National University of Kyiv, Volodymyrska 64, 01601, Kyiv, Ukraine
| | - Ryan E McNamee
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | | | - Amber L Thompson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Russell C Smith
- AbbVie Drug Discovery Science & Technology (DDST), 1 North Waukegan Road, North Chicago, IL 60064, USA
| | | | - Edward A Anderson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
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8
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Reactions of difluoro-pentafluorosulfanyl-iodomethane (SF5CF2I) with electronically different types of alkenes. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.110051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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9
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Kraemer Y, Ghiazza C, Ragan AN, Ni S, Lutz S, Neumann EK, Fettinger JC, Nöthling N, Goddard R, Cornella J, Pitts CR. Strain-Release Pentafluorosulfanylation and Tetrafluoro(aryl)sulfanylation of [1.1.1]Propellane: Reactivity and Structural Insight. Angew Chem Int Ed Engl 2022; 61:e202211892. [PMID: 36137228 PMCID: PMC9828730 DOI: 10.1002/anie.202211892] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Indexed: 01/12/2023]
Abstract
We leveraged the recent increase in synthetic accessibility of SF5 Cl and Ar-SF4 Cl compounds to combine chemistry of the SF5 and SF4 Ar groups with strain-release functionalization. By effectively adding SF5 and SF4 Ar radicals across [1.1.1]propellane, we accessed structurally unique bicyclopentanes, bearing two distinct elements of bioisosterism. Upon evaluating these "hybrid isostere" motifs in the solid state, we measured exceptionally short transannular distances; in one case, the distance rivals the shortest nonbonding C⋅⋅⋅C contact reported to date. This prompted SC-XRD and DFT analyses that support the notion that a donor-acceptor interaction involving the "wing" C-C bonds is playing an important role in stabilization. Thus, these heretofore unknown structures expand the palette for highly coveted three-dimensional fluorinated building blocks and provide insight to a more general effect observed in bicyclopentanes.
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Affiliation(s)
- Yannick Kraemer
- Department of ChemistryUniversity of California, Davis1 Shields AvenueDavisCA 95616USA
| | - Clément Ghiazza
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
| | - Abbey N. Ragan
- Department of ChemistryUniversity of California, Davis1 Shields AvenueDavisCA 95616USA
| | - Shengyang Ni
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
| | - Sigrid Lutz
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
| | - Elizabeth K. Neumann
- Department of ChemistryUniversity of California, Davis1 Shields AvenueDavisCA 95616USA
| | - James C. Fettinger
- Department of ChemistryUniversity of California, Davis1 Shields AvenueDavisCA 95616USA
| | - Nils Nöthling
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
| | - Richard Goddard
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
| | - Josep Cornella
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
| | - Cody Ross Pitts
- Department of ChemistryUniversity of California, Davis1 Shields AvenueDavisCA 95616USA
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10
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Zhao X, Shou JY, Newton JJ, Qing FL. trans-Trifluoromethyltetrafluorosulfanyl Chloride: Selective Synthesis and Reaction with Diazo Compounds. Org Lett 2022; 24:8412-8416. [DOI: 10.1021/acs.orglett.2c03540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xin Zhao
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Jia-Yi Shou
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Josiah J. Newton
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
| | - Feng-Ling Qing
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Science, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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11
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Eder T, Buß F, Wilm LFB, Seidl M, Podewitz M, Dielmann F. Oxidative Fluorination of Selenium and Tellurium Compounds using a Thermally Stable Phosphonium SF 5 - Salt Accessible from SF 6. Angew Chem Int Ed Engl 2022; 61:e202209067. [PMID: 36018610 PMCID: PMC9826459 DOI: 10.1002/anie.202209067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Indexed: 01/11/2023]
Abstract
Fluorinated group 16 moieties are attractive building blocks in synthetic chemistry but only few synthetic methods are available to prepare them. Herein, we report a new oxidative fluorination reagent capable of stabilizing reactive fluorinated anions. It consists of an SF5 - anion and a chemically inert phosphonium cation and is exceptionally thermally stable. Accordingly, it was used to generate the SeF5 - and TeF5 - anions from the elemental chalcogens and to prepare the unknown tetrafluoro(phenyl)-λ5 -selenate PhSeF4 - and -tellurate PhTeF4 - from the corresponding diphenyl dichalcogenides. In addition, we show that further derivatization of [PhTeF4 ]- by oxidation to trans-PhTeF4 O- and subsequent alkylation gives access to a new class of trans-(alkoxy)(phenyl)tetrafluoro-λ6 -tellanes (trans-PhTeF4 OR), thus providing an approach to introduce the functional group into organic molecules.
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Affiliation(s)
- Tobias Eder
- Institute of GeneralInorganic and Theoretical ChemistryLeopold-Franzens-Universität InnsbruckInnrain 80–826020InnsbruckAustria,Institute of Inorganic and Analytical ChemistryWestfälische Wilhelms-Universität MünsterCorrensstrasse 28–3048149MünsterGermany
| | - Florenz Buß
- Institute of Inorganic and Analytical ChemistryWestfälische Wilhelms-Universität MünsterCorrensstrasse 28–3048149MünsterGermany
| | - Lukas F. B. Wilm
- Institute of Inorganic and Analytical ChemistryWestfälische Wilhelms-Universität MünsterCorrensstrasse 28–3048149MünsterGermany
| | - Michael Seidl
- Institute of GeneralInorganic and Theoretical ChemistryLeopold-Franzens-Universität InnsbruckInnrain 80–826020InnsbruckAustria
| | - Maren Podewitz
- Institute of Materials ChemistryTU WienGetreidemarkt 91060ViennaAustria
| | - Fabian Dielmann
- Institute of GeneralInorganic and Theoretical ChemistryLeopold-Franzens-Universität InnsbruckInnrain 80–826020InnsbruckAustria
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12
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Shou J, Qing F. Three‐Component Reaction of Pentafluorosulfanyl Chloride, Alkenes and Diazo Compounds and Synthesis of Pentafluorosulfanylfurans. Angew Chem Int Ed Engl 2022; 61:e202208860. [DOI: 10.1002/anie.202208860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Indexed: 12/16/2022]
Affiliation(s)
- Jia‐Yi Shou
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Science Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Feng‐Ling Qing
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Science Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
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13
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Eder T, Buß F, Wilm LFB, Seidl M, Podewitz M, Dielmann F. Oxidative Fluorination of Selenium and Tellurium Compounds using a Thermally Stable Phosphonium SF5‐ Salt Accessible from SF6. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Tobias Eder
- Leopold Franzens Universität für Innsbruck: Universitat Innsbruck Inorganic Chemistry AUSTRIA
| | - Florenz Buß
- Westfälische Wilhelms-Universität Münster: Westfalische Wilhelms-Universitat Munster Inorganic Chemistry GERMANY
| | - Lukas F. B. Wilm
- Westfälische Wilhelms-Universität Münster: Westfalische Wilhelms-Universitat Munster Inorganic Chemistry GERMANY
| | - Michael Seidl
- Leopold Franzens Universität für Innsbruck: Universitat Innsbruck Inorganic Chemistry AUSTRIA
| | - Maren Podewitz
- TU Wien: Technische Universitat Wien Institute of Materials Chemistry AUSTRIA
| | - Fabian Dielmann
- Universitat Innsbruck Fakultat fur Chemie und Pharmazie Institut für Allgemeine, Anorganische und Theoretische Chemie Innrain 80-82 6020 Innsbruck AUSTRIA
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14
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Shou JY, Qing FL. Three‐Component Reaction of Pentafluorosulfanyl Chloride, Alkenes and Diazo Compounds and Synthesis of Pentafluorosulfanylfurans. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jia-Yi Shou
- Shanghai Institute of Organic Chemistry Key Laboratory of Organofluorine Chemistry CHINA
| | - Feng-Ling Qing
- Shanghai Institute of Organic Chemistry Laboratory of Organofluorine Chemistry 345 lingling Lu 200032 Shanghai CHINA
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15
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Ragan AN, Kraemer Y, Kong WY, Prasad S, Tantillo DJ, Pitts CR. Evidence for C–F Bond Formation through Formal Reductive Elimination from Tellurium(VI). Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Abbey N. Ragan
- University of California Davis Chemistry 1 Shields Avenue 95616 Davis UNITED STATES
| | - Yannick Kraemer
- University of California Davis Chemistry 1 Shields Avenue 95616 Davis UNITED STATES
| | - Wang-Yeuk Kong
- University of California Davis Chemistry 1 Shields Avenue 95616 Davis UNITED STATES
| | - Supreeth Prasad
- University of California Davis Chemistry 1 Shields Avenue 95616 Davis UNITED STATES
| | - Dean J. Tantillo
- University of California Davis Chemistry 1 Shields Avenue 95616 Davis UNITED STATES
| | - Cody Ross Pitts
- University of California Davis Department of Chemistry One Shields Avenue 95616 Davis UNITED STATES
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16
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Ragan AN, Kraemer Y, Kong WY, Prasad S, Tantillo DJ, Pitts CR. Evidence for C-F Bond Formation through Formal Reductive Elimination from Tellurium(VI). Angew Chem Int Ed Engl 2022; 61:e202208046. [PMID: 35859267 DOI: 10.1002/anie.202208046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Indexed: 11/10/2022]
Abstract
The fundamental challenge of C-F bond formation by reductive elimination has been met by compounds of select transition metals and fewer main group elements. The work detailed herein expands the list of main group elements known to be capable of reductively eliminating a C-F bond to include tellurium. Surprising and novel modes of both sp2 and sp3 C-F bond formation were observed alongside formation of TeIV cations during two separate attempts to synthesize/characterize fluorinated organotellurium(VI) cations in superacidic media (SbF5 /SO2 ClF). Following detailed low-temperature NMR experiments, the mechanisms of the two unique reductive elimination reactions were probed and investigated using density functional theory (DFT) calculations. Ultimately, we found that an "indirect" reductive elimination pathway is likely operative whereby Sb plays a key role in fluoride abstraction and C-F bond formation, as opposed to unimolecular reductive elimination from a discrete TeVI cation.
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Affiliation(s)
- Abbey N Ragan
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Yannick Kraemer
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Wang-Yeuk Kong
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Supreeth Prasad
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Dean J Tantillo
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
| | - Cody Ross Pitts
- Department of Chemistry, University of California, 1 Shields Avenue, Davis, CA 95616, USA
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