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Talavera M, Braun T. Versatile Reaction Pathways of 1,1,3,3,3-Pentafluoropropene at Rh(I) Complexes [Rh(E)(PEt 3 ) 3 ] (E=H, GePh 3 , Si(OEt) 3 , F, Cl): C-F versus C-H Bond Activation Steps. Chemistry 2021; 27:11926-11934. [PMID: 34118095 PMCID: PMC8456946 DOI: 10.1002/chem.202101508] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Indexed: 11/08/2022]
Abstract
The reaction of the rhodium(I) complexes [Rh(E)(PEt3)3] (E=GePh3 (1), H (6), F (7)) with 1,1,3,3,3‐pentafluoropropene afforded the defluorinative germylation products Z/E‐2‐(triphenylgermyl)‐1,3,3,3‐tetrafluoropropene and the fluorido complex [Rh(F)(CF3CHCF2)(PEt3)2] (2) together with the fluorophosphorane E‐(CF3)CH=CF(PFEt3). For [Rh(Si(OEt)3)(PEt3)3] (4) the coordination of the fluoroolefin was found to give [Rh{Si(OEt)3}(CF3CHCF2)(PEt3)2] (5). Two equivalents of complex 2 reacted further by C−F bond oxidative addition to yield [Rh(CF=CHCF3)(PEt3)2(μ‐F)3Rh(CF3CHCF2)(PEt3)] (9). The role of the fluorido ligand on the reactivity of complex 2 was assessed by comparison with the analogous chlorido complex. The use of complexes 1, 4 and 6 as catalysts for the derivatization of 1,1,3,3,3‐pentafluoropropene provided products, which were generated by hydrodefluorination, hydrometallation and germylation reactions.
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Affiliation(s)
- Maria Talavera
- Department of Chemistry, Universität zu Berlin, Brook-Taylor Str. 2, 12489, Berlin, Germany
| | - Thomas Braun
- Department of Chemistry, Universität zu Berlin, Brook-Taylor Str. 2, 12489, Berlin, Germany
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2
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Pavlenko NV, Peng S, Petrov V, Jackson A, Sun X, Sprague L, Yagupolskii YL. Catalytic Hydrosilylation of Hydrofluoroolefins (HFOs): Synthesis of New Fluorinated Silanes and Diversity of their Synthetic Character. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000853] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Natalia V. Pavlenko
- Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska St. 5 02660 Kiev Ukraine
| | - Sheng Peng
- The Chemours Company, Experimental Station Bldg. 262 Wilmington De 19880 USA
| | - Viacheslav Petrov
- The Chemours Company, Experimental Station Bldg. 262 Wilmington De 19880 USA
| | - Andrew Jackson
- The Chemours Company, Experimental Station Bldg. 262 Wilmington De 19880 USA
| | - Xuehui Sun
- The Chemours Company, Experimental Station Bldg. 262 Wilmington De 19880 USA
| | - Lee Sprague
- The Chemours Company, Experimental Station Bldg. 262 Wilmington De 19880 USA
| | - Yurii L. Yagupolskii
- Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska St. 5 02660 Kiev Ukraine
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3
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Kervarec M, Kemnitz E, Scholz G, Rudić S, Braun T, Jäger C, Michalchuk AAL, Emmerling F. A HF Loaded Lewis-Acidic Aluminium Chlorofluoride for Hydrofluorination Reactions. Chemistry 2020; 26:7314-7322. [PMID: 32315479 PMCID: PMC7318592 DOI: 10.1002/chem.202001627] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Indexed: 12/14/2022]
Abstract
The very strong Lewis acid aluminium chlorofluoride (ACF) was loaded with anhydrous HF. The interaction between the surface of the catalyst and HF was investigated using a variety of characterization methods, which revealed the formation of polyfluorides. Moreover, the reactivity of the HF-loaded ACF towards the hydrofluorination of alkynes was studied.
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Affiliation(s)
| | - Erhard Kemnitz
- Department of ChemistryHumboldt-Universität zu BerlinBrook-Taylor-Straße 212489BerlinGermany
| | - Gudrun Scholz
- Department of ChemistryHumboldt-Universität zu BerlinBrook-Taylor-Straße 212489BerlinGermany
| | - Svemir Rudić
- ISIS Neutron and Muon Source, STFCRutherford Appleton LaboratoryChilton, DidcotUK
| | - Thomas Braun
- Department of ChemistryHumboldt-Universität zu BerlinBrook-Taylor-Straße 212489BerlinGermany
| | - Christian Jäger
- BAM Federal Institute for Materials Research and TestingRichard-Willstätter-Straße12489BerlinGermany
| | - Adam A. L. Michalchuk
- BAM Federal Institute for Materials Research and TestingRichard-Willstätter-Straße12489BerlinGermany
| | - Franziska Emmerling
- BAM Federal Institute for Materials Research and TestingRichard-Willstätter-Straße12489BerlinGermany
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4
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Talavera M, von Hahmann CN, Müller R, Ahrens M, Kaupp M, Braun T. C−H and C−F Bond Activation Reactions of Fluorinated Propenes at Rhodium: Distinctive Reactivity of the Refrigerant HFO‐1234yf. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902872] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Maria Talavera
- Department of ChemistryHumboldt Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Cortney N. von Hahmann
- Department of ChemistryHumboldt Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Robert Müller
- Institut für Chemie, Theoretische Chemie/Quantenchemie, Sekr. C7Technische Universität Berlin Strasse des 17. Juni 135 10623 Berlin Germany
| | - Mike Ahrens
- Department of ChemistryHumboldt Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
| | - Martin Kaupp
- Institut für Chemie, Theoretische Chemie/Quantenchemie, Sekr. C7Technische Universität Berlin Strasse des 17. Juni 135 10623 Berlin Germany
| | - Thomas Braun
- Department of ChemistryHumboldt Universität zu Berlin Brook-Taylor-Strasse 2 12489 Berlin Germany
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5
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Talavera M, von Hahmann CN, Müller R, Ahrens M, Kaupp M, Braun T. C-H and C-F Bond Activation Reactions of Fluorinated Propenes at Rhodium: Distinctive Reactivity of the Refrigerant HFO-1234yf. Angew Chem Int Ed Engl 2019; 58:10688-10692. [PMID: 31102565 DOI: 10.1002/anie.201902872] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/28/2019] [Indexed: 02/02/2023]
Abstract
The reaction of [Rh(H)(PEt3 )3 ] (1) with the refrigerant HFO-1234yf (2,3,3,3-tetrafluoropropene) affords an efficient route to obtain [Rh(F)(PEt3 )3 ] (3) by C-F bond activation. Catalytic hydrodefluorinations were achieved in the presence of the silane HSiPh3 . In the presence of a fluorosilane, 3 provides a C-H bond activation followed by a 1,2-fluorine shift to produce [Rh{(E)-C(CF3 )=CHF}(PEt3 )3 ] (4). Similar rearrangements of HFO-1234yf were observed at [Rh(E)(PEt3 )3 ] [E=Bpin (6), C7 D7 (8), Me (9)]. The ability to favor C-H bond activation using 3 and fluorosilane is also demonstrated with 3,3,3-trifluoropropene. Studies are supported by DFT calculations.
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Affiliation(s)
- Maria Talavera
- Department of Chemistry, Humboldt Universität zu Berlin, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
| | - Cortney N von Hahmann
- Department of Chemistry, Humboldt Universität zu Berlin, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
| | - Robert Müller
- Institut für Chemie, Theoretische Chemie/Quantenchemie, Sekr. C7, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Mike Ahrens
- Department of Chemistry, Humboldt Universität zu Berlin, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
| | - Martin Kaupp
- Institut für Chemie, Theoretische Chemie/Quantenchemie, Sekr. C7, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Thomas Braun
- Department of Chemistry, Humboldt Universität zu Berlin, Brook-Taylor-Strasse 2, 12489, Berlin, Germany
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6
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Fujita T, Fuchibe K, Ichikawa J. Transition-Metal-Mediated and -Catalyzed C−F Bond Activation by Fluorine Elimination. Angew Chem Int Ed Engl 2018; 58:390-402. [DOI: 10.1002/anie.201805292] [Citation(s) in RCA: 241] [Impact Index Per Article: 40.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Indexed: 01/29/2023]
Affiliation(s)
- Takeshi Fujita
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Kohei Fuchibe
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Junji Ichikawa
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
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Fujita T, Fuchibe K, Ichikawa J. Übergangsmetallvermittelte und -katalysierte C-F-Bindungsaktivierung durch Fluoreliminierung. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805292] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Takeshi Fujita
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Kohei Fuchibe
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
| | - Junji Ichikawa
- Division of Chemistry; Faculty of Pure and Applied Sciences; University of Tsukuba; Tsukuba Ibaraki 305-8571 Japan
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8
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Bakewell C, White AJP, Crimmin MR. Reactions of Fluoroalkenes with an Aluminium(I) Complex. Angew Chem Int Ed Engl 2018; 57:6638-6642. [DOI: 10.1002/anie.201802321] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Clare Bakewell
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
| | - Andrew J. P. White
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
| | - Mark R. Crimmin
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
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9
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Bakewell C, White AJP, Crimmin MR. Reactions of Fluoroalkenes with an Aluminium(I) Complex. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802321] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Clare Bakewell
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
| | - Andrew J. P. White
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
| | - Mark R. Crimmin
- Department of ChemistryImperial College London South Kensington London SW7 2AZ UK
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10
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Jambor R, Lyčka A. Organosilicon and ‐germanium Hydrides in Catalyst‐Free Hydrometallation Reactions. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700630] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Roman Jambor
- Department of General and Inorganic Chemistry Faculty of Chemical Technology University of Pardubice Studentská 95 53210 Pardubice Czech Republic
| | - Antonín Lyčka
- Faculty of Chemical Technology Centre of Organic Chemistry Rybitví 296 53354 Rybitví Czech Republic
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11
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Chen W, Hooper TN, Ng J, White AJP, Crimmin MR. Palladium‐Catalyzed Carbon–Fluorine and Carbon–Hydrogen Bond Alumination of Fluoroarenes and Heteroarenes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706378] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wenyi Chen
- Department of Chemistry Imperial College London South Kensington London SW7 2AZ UK
| | - Thomas N. Hooper
- Department of Chemistry Imperial College London South Kensington London SW7 2AZ UK
| | - Jamues Ng
- Department of Chemistry Imperial College London South Kensington London SW7 2AZ UK
| | - Andrew J. P. White
- Department of Chemistry Imperial College London South Kensington London SW7 2AZ UK
| | - Mark R. Crimmin
- Department of Chemistry Imperial College London South Kensington London SW7 2AZ UK
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12
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Chen W, Hooper TN, Ng J, White AJP, Crimmin MR. Palladium‐Catalyzed Carbon–Fluorine and Carbon–Hydrogen Bond Alumination of Fluoroarenes and Heteroarenes. Angew Chem Int Ed Engl 2017; 56:12687-12691. [DOI: 10.1002/anie.201706378] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 07/31/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Wenyi Chen
- Department of Chemistry Imperial College London South Kensington London SW7 2AZ UK
| | - Thomas N. Hooper
- Department of Chemistry Imperial College London South Kensington London SW7 2AZ UK
| | - Jamues Ng
- Department of Chemistry Imperial College London South Kensington London SW7 2AZ UK
| | - Andrew J. P. White
- Department of Chemistry Imperial College London South Kensington London SW7 2AZ UK
| | - Mark R. Crimmin
- Department of Chemistry Imperial College London South Kensington London SW7 2AZ UK
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13
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Chen J, Huang D, Ding Y. Rhodium-Catalyzedortho-Selective C-F Activation and Hydrodefluorination of Heterocycle-Substituted Polyfluoroarenes: Dominated by Phosphine Ligands. ChemistrySelect 2017. [DOI: 10.1002/slct.201601839] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jianping Chen
- The Key Laboratory of Food Colloids and Biotechnology; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 1800 Lihu Road Wuxi, Jiangsu Province 214122 China
| | - Dongyang Huang
- The Key Laboratory of Food Colloids and Biotechnology; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 1800 Lihu Road Wuxi, Jiangsu Province 214122 China
| | - Yuqiang Ding
- The Key Laboratory of Food Colloids and Biotechnology; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 1800 Lihu Road Wuxi, Jiangsu Province 214122 China
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14
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Ahrens T, Schmiedecke B, Braun T, Herrmann R, Laubenstein R. Activation of CS2and COS at a Rhodium(I) Germyl Complex: Generation of CS and Carbido Complexes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601122] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Theresia Ahrens
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Bastian Schmiedecke
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Thomas Braun
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Roy Herrmann
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Reik Laubenstein
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
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15
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Competition of Nucleophilic Aromatic Substitution, σ-Bond Metathesis, and syn
Hydrometalation in Titanium(III)-Catalyzed Hydrodefluorination of Arenes. Chem Asian J 2016; 11:3062-3071. [DOI: 10.1002/asia.201601036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Indexed: 11/07/2022]
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Baumgarth H, Meier G, Braun T, Braun‐Cula B. Rhodium and Iridium Fluorido and Bifluorido Complexes Derived from Peroxido Precursors. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600682] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hanna Baumgarth
- Humboldt‐Universität zu BerlinDepartment of ChemistryBrook‐Taylor‐Straße 212489BerlinGermany
| | - Gregor Meier
- Humboldt‐Universität zu BerlinDepartment of ChemistryBrook‐Taylor‐Straße 212489BerlinGermany
| | - Thomas Braun
- Humboldt‐Universität zu BerlinDepartment of ChemistryBrook‐Taylor‐Straße 212489BerlinGermany
| | - Beatrice Braun‐Cula
- Humboldt‐Universität zu BerlinDepartment of ChemistryBrook‐Taylor‐Straße 212489BerlinGermany
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Liebau F, Braun T, Braun B. Dehydrogenation of cycloalkanes at rhodium complexes bearing fluorinated cyclopentadienyl ligands. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.09.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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18
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Doi R, Ohashi M, Ogoshi S. Copper-Catalyzed Reaction of Trifluoromethylketones with Aldehydes via a Copper Difluoroenolate. Angew Chem Int Ed Engl 2015; 55:341-4. [DOI: 10.1002/anie.201508266] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 09/15/2015] [Indexed: 11/08/2022]
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19
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Doi R, Ohashi M, Ogoshi S. Copper-Catalyzed Reaction of Trifluoromethylketones with Aldehydes via a Copper Difluoroenolate. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508266] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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20
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Zámostná L, Braun T. Catalytic Degradation of Sulfur Hexafluoride by Rhodium Complexes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505462] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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21
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Zámostná L, Braun T. Catalytic Degradation of Sulfur Hexafluoride by Rhodium Complexes. Angew Chem Int Ed Engl 2015; 54:10652-6. [DOI: 10.1002/anie.201505462] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Indexed: 11/10/2022]
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Zámostná L, Sander S, Braun T, Laubenstein R, Braun B, Herrmann R, Kläring P. Synthesis and structure of rhodium(i) silyl carbonyl complexes: photochemical C-F and C-H bond activation of fluorinated aromatic compounds. Dalton Trans 2015; 44:9450-69. [PMID: 25915856 DOI: 10.1039/c5dt00819k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The rhodium(i) silyl carbonyl complexes [Rh{Si(OEt)3}(CO)(dippp)] () and [Rh{Si(OEt)3}(CO)(dippe)] () (dippp = 1,3-bis(diisopropylphosphino)propane, dippe = 1,2-bis-(diisopropylphosphino)ethane) were synthesized on treatment of the methyl compounds [Rh(CH3)(CO)(dippp)] () or [Rh(CH3)(CO)(dippe)] () with HSi(OEt)3 at low temperature. The methyl complexes and were prepared starting from the binuclear complexes [{Rh(μ-Cl)(dippp)}2] () and [{Rh(μ-Cl)(dippe)}2] (), respectively. The silyl complexes and as well as the precursors [{Rh(μ-I)(dippp)}2] (), [Rh(X)(CO)(dippp)] (: X = CH3, : X = I) and [Rh(X)(CO)(dippe)] (: X = CH3, : X = Cl) were characterized by NMR and IR spectroscopy and the structures in the solid state were determined by X-ray crystallography. The silyl complex converts into the carbonyl-bridged complex [{Rh(μ-CO)(dippp)}2] () above temperatures of -30 °C by loss of the silyl ligand, whereas is more thermally stable and a reaction to the binuclear complex [{Rh(μ-CO)(dippe)}2] () was observed at 50 °C. The silyl complex reacted under irradiation with hexafluorobenzene and pentafluoropyridine to give the C-F activation products [Rh(C6F5)(CO)(dippe)] () and [Rh(2-C5F4N)(CO)(dippe)] (), respectively. As additional products the silyl dicarbonyl complex [Rh{Si(OEt)3}(CO)2(dippe)] () and the cationic complex [Rh2(μ-H)(μ-CO)2(dippe)2](+)[SiF5](-) () were identified. Compound was synthesized independently by treatment of with gaseous CO. In a similar manner, the dippp analogue [Rh{Si(OEt)3}(CO)2(dippp)] () was also prepared starting from . Photochemical reaction of with pentafluorobenzene and 2,3,5,6-tetrafluoropyridine resulted selectively in C-H bond activation to afford and [Rh(4-C5F4N)(CO)(dippe)] (), respectively.
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Affiliation(s)
- Lada Zámostná
- Humboldt-Universität zu Berlin, Department of Chemistry, Brook-Taylor-Straße 2, D-12489 Berlin, Germany.
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Raza AL, Braun T. Consecutive C-F bond activation and C-F bond formation of heteroaromatics at rhodium: the peculiar role of FSi(OEt) 3. Chem Sci 2015; 6:4255-4260. [PMID: 29218192 PMCID: PMC5707480 DOI: 10.1039/c5sc00877h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 05/09/2015] [Indexed: 01/09/2023] Open
Abstract
C-F activation of 2,3,5,6-tetrafluoropyridine at [Rh{Si(OEt)3}(PEt3)3] (1) yields [Rh{2-(3,5,6-C5F3HN)}(PEt3)3] (2) and FSi(OEt)3, but in an unprecedented consecutive reaction FSi(OEt)3 acts as a fluoride source to give [Rh(4-C5F4N)(PEt3)3] (4) by regeneration of the C-F bond and C-H activation. Analogous refluorination steps were observed for other 2-pyridyl rhodium complexes. NMR spectroscopic studies revealed a delicate balance between the feasibility for C-F bond formation accompanied by a C-H activation and the occurrence of competing reactions such as hydrodefluorinations induced by the intermediary presence of H2.
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Affiliation(s)
- A L Raza
- Humboldt-Universität zu Berlin , Department of Chemistry , Brook-Taylor-Straße 2 , 12489 Berlin , Germany .
| | - T Braun
- Humboldt-Universität zu Berlin , Department of Chemistry , Brook-Taylor-Straße 2 , 12489 Berlin , Germany .
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Abstract
Nanoscale metal fluorides and hydroxide fluorides prepared according the fluorolytic sol–gel synthesis represent a powerful class of bi-acidic heterogeneous catalysts.
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Affiliation(s)
- Erhard Kemnitz
- Department für Chemie
- Humboldt-Universität zu Berlin
- D-12489 Berlin
- Germany
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25
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Ahrens T, Kohlmann J, Ahrens M, Braun T. Functionalization of fluorinated molecules by transition-metal-mediated C-F bond activation to access fluorinated building blocks. Chem Rev 2014; 115:931-72. [PMID: 25347593 DOI: 10.1021/cr500257c] [Citation(s) in RCA: 606] [Impact Index Per Article: 60.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Theresia Ahrens
- Humboldt-Universität zu Berlin , Department of Chemistry, Brook-Taylor-Straße 2, 12489 Berlin, Germany
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Ohashi M, Shibata M, Ogoshi S. Regioselective CF Bond Activation of Hexafluoropropylene on Palladium(0): Formation of a Cationic η2-Perfluoroallylpalladium Complex. Angew Chem Int Ed Engl 2014; 53:13578-82. [DOI: 10.1002/anie.201408467] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Indexed: 11/11/2022]
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27
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Ohashi M, Shibata M, Ogoshi S. Regioselective CF Bond Activation of Hexafluoropropylene on Palladium(0): Formation of a Cationic η2-Perfluoroallylpalladium Complex. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408467] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ichitsuka T, Fujita T, Arita T, Ichikawa J. Double CF Bond Activation through β-Fluorine Elimination: Nickel-Mediated [3+2] Cycloaddition of 2-Trifluoromethyl-1-alkenes with Alkynes. Angew Chem Int Ed Engl 2014; 53:7564-8. [DOI: 10.1002/anie.201402695] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Indexed: 01/29/2023]
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Ichitsuka T, Fujita T, Arita T, Ichikawa J. Double CF Bond Activation through β-Fluorine Elimination: Nickel-Mediated [3+2] Cycloaddition of 2-Trifluoromethyl-1-alkenes with Alkynes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402695] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Zámostná L, Ahrens M, Braun T. Catalytic hydrodefluorination of fluoroaromatics with silanes as hydrogen source at a binuclear rhodium complex: Characterization of key intermediates. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2013.05.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Raza AL, Panetier JA, Teltewskoi M, Macgregor SA, Braun T. Rhodium(I) Silyl Complexes for C–F Bond Activation Reactions of Aromatic Compounds: Experimental and Computational Studies. Organometallics 2013. [DOI: 10.1021/om400150p] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Anna Lena Raza
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany
| | - Julien A. Panetier
- Institute of Chemical Sciences, School of Engineering
and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Michael Teltewskoi
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany
| | - Stuart A. Macgregor
- Institute of Chemical Sciences, School of Engineering
and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K
| | - Thomas Braun
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany
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Ahrens M, Scholz G, Braun T, Kemnitz E. Catalytic Hydrodefluorination of Fluoromethanes at Room Temperature by Silylium-ion-like Surface Species. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300608] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ahrens M, Scholz G, Braun T, Kemnitz E. Catalytic Hydrodefluorination of Fluoromethanes at Room Temperature by Silylium-ion-like Surface Species. Angew Chem Int Ed Engl 2013; 52:5328-32. [DOI: 10.1002/anie.201300608] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 02/22/2013] [Indexed: 11/08/2022]
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Lv H, Cai YB, Zhang JL. Copper-Catalyzed Hydrodefluorination of Fluoroarenes by Copper Hydride Intermediates. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201208364] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lv H, Cai YB, Zhang JL. Copper-Catalyzed Hydrodefluorination of Fluoroarenes by Copper Hydride Intermediates. Angew Chem Int Ed Engl 2013; 52:3203-7. [DOI: 10.1002/anie.201208364] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 12/21/2012] [Indexed: 11/11/2022]
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Kuehnel MF, Lentz D, Braun T. Synthesis of Fluorinated Building Blocks by Transition-Metal-Mediated Hydrodefluorination Reactions. Angew Chem Int Ed Engl 2013; 52:3328-48. [DOI: 10.1002/anie.201205260] [Citation(s) in RCA: 313] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Indexed: 11/06/2022]
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Kuehnel MF, Lentz D, Braun T. Synthese fluorierter Bausteine durch Übergangsmetall-vermittelte Hydrodefluorierungsreaktionen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201205260] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Voigt J, Chilleck MA, Braun T. Activation of Si-Si and Si-H bonds at Pt: a catalytic hydrogenolysis of silicon-silicon bonds. Dalton Trans 2013; 42:4052-8. [PMID: 23340919 DOI: 10.1039/c3dt32530j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The activation of Ph(2)HSiSiHPh(2) and Me(3)SiSiMe(3) at [Pt(PEt(3))(3)] (1) yielded the products of oxidative addition. The formation of [Pt(SiHPh(2))(2)(PEt(3))(2)] (2) as a mixture of the cis and trans isomers appears to proceed quantitatively, whereas a conversion to give cis-[Pt(SiMe(3))(2)(PEt(3))(2)] (3) was not complete. Treatment of 1 with one equivalent of H(2)SiPh(2) led to cis-and trans-[Pt(H)(SiHPh(2))(PEt(3))(2)] (cis-4, trans-4) together with the dinuclear complex [(Et(3)P)(2)(H)Pt(μ-SiPh(2))(μ-η(2)-HSiPh(2))Pt(PEt(3))] (5). In contrast, HSiMe(3) reacts with [Pt(PEt(3))(3)] to yield cis-[Pt(H)(SiMe(3))(PEt(3))(2)] (7) exclusively. Catalytic reactions of dihydrogen with the disilanes Ph(2)HSiSiHPh(2) or Me(3)SiSiMe(3) in the presence of catalytic amounts of [Pt(PEt(3))(3)] (1) led to the products of hydrogenolysis, H(2)SiPh(2) and HSiMe(3). The conversion of Me(3)SiSiMe(3) is much slower and needs higher temperature to proceed.
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Affiliation(s)
- Jan Voigt
- Department of Chemistry, Humboldt-Universitat Berlin, Brook-Taylor-Str. 2, Berlin, Germany
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Rábay B, Braun T, Falkenhagen JP. Photolytic C–H activation and dehydrogenation of alkanes at cyclopentadienyl iridium complexes in a perfluorinated solvent. Dalton Trans 2013; 42:8058-65. [DOI: 10.1039/c3dt33022b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kuehnel MF, Holstein P, Kliche M, Krüger J, Matthies S, Nitsch D, Schutt J, Sparenberg M, Lentz D. Titanium-Catalyzed Vinylic and Allylic CF Bond Activation-Scope, Limitations and Mechanistic Insight. Chemistry 2012; 18:10701-14. [DOI: 10.1002/chem.201201125] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Indexed: 11/09/2022]
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Kuehnel MF, Schlöder T, Riedel S, Nieto-Ortega B, Ramírez FJ, López Navarrete JT, Casado J, Lentz D. Synthesis of the Smallest Axially Chiral Molecule by Asymmetric Carbon-Fluorine Bond Activation. Angew Chem Int Ed Engl 2012; 51:2218-20. [DOI: 10.1002/anie.201108105] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Indexed: 11/07/2022]
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Kuehnel MF, Schlöder T, Riedel S, Nieto-Ortega B, Ramírez FJ, López Navarrete JT, Casado J, Lentz D. Synthese des kleinsten axial-chiralen Moleküls durch asymmetrische Kohlenstoff-Fluor-Bindungsaktivierung. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108105] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Kläring P, Jungton AK, Braun T, Müller C. Synthesis, Structure and Reactivity of Iridium Hydrido Fluorido Complexes. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100917] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Braun T, Wehmeier F. C–F Bond Activation of Highly Fluorinated Molecules at Rhodium: From Model Reactions to Catalysis. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201001184] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Thomas Braun
- Humboldt‐Universität zu Berlin, Institut für Chemie, Brook‐Taylor‐Str. 2 12489 Berlin, Germany, Fax: +49‐30‐2093‐6966
| | - Falk Wehmeier
- Humboldt‐Universität zu Berlin, Institut für Chemie, Brook‐Taylor‐Str. 2 12489 Berlin, Germany, Fax: +49‐30‐2093‐6966
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Jana A, Samuel PP, Tavcar G, Roesky HW, Schulzke C. Selective aromatic C-F and C-H bond activation with silylenes of different coordinate silicon. J Am Chem Soc 2010; 132:10164-70. [PMID: 20608652 DOI: 10.1021/ja103988d] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Herein we report on the reaction of stable two-coordinate silylene, L(1)Si [L(1) = CH{(C=CH(2))(CMe)(2,6-iPr(2)C(6)H(3)N)(2)}] (1) and three-coordinate silylene (Lewis base stabilized silylene), L(2)SiCl [L(2) = PhC(NtBu)(2)] (2) with aromatic compounds containing C-F and C-H bonds. The reaction of 1 and 2 with hexafluorobenzene (C(6)F(6)) affords the silicon(IV) fluorides, L(1)SiF(C(6)F(5)) (3) and L(2)SiFCl(C(6)F(5)) (4), respectively. The reaction proceeds through the unprecedented oxidative addition of one of the C-F bonds to the silicon(II) center without any additional catalyst. When 1 and 2 are treated with octafluorotoluene (C(6)F(5)CF(3)), pentafluoropyridine (C(5)F(5)N) regioselective C-F bond activation occurs leading to the formation of L(1)SiF(4-C(6)F(4)CF(3)) (5), L(1)SiF(4-C(5)F(4)N) (6), L(2)SiFCl(4-C(6)F(4)CF(3)) (7), and L(2)SiFCl(4-C(5)F(4)N) (8), respectively. More interestingly, compounds 1 and 2 react with pentafluorobenzene (C(6)F(5)H) under formation of silicon(IV) hydride L(1)SiH(C(6)F(5)) (9) by chemoselective C-H bond activation, in the latter case producing silicon(IV) fluoride L(2)SiFCl(4-C(6)F(4)H) (10) by chemo- as well as regioselective C-F bond activation. Furthermore, the reaction of 1 with 1,3,5-trifluorobenzene (1,3,5-C(6)F(3)H(3)) leads to the chemoselective formation of silicon(IV) hydride L(1)SiH(1,3,5-C(6)F(3)H(2)) (11). The formation of compounds 9 and 11 occurs via oxidative addition of the aromatic C-H bond to the silicon(II) center instead of C-F bond activation. All reported reactions proceed without any additional catalyst. Compounds 3, 4, 5, 6, 7, 8, 9, 10, and 11 were investigated by microanalysis and multinuclear NMR spectroscopy and compounds 3, 7, 8, and 9 additionally by single crystal X-ray structural analyses.
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Affiliation(s)
- Anukul Jana
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany
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Thomas Braun. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/anie.201004120] [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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Thomas Braun. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201004120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Teltewskoi M, Panetier J, Macgregor S, Braun T. A Highly Reactive Rhodium(I)-Boryl Complex as a Useful Tool for CH Bond Activation and Catalytic CF Bond Borylation. Angew Chem Int Ed Engl 2010; 49:3947-51. [DOI: 10.1002/anie.201001070] [Citation(s) in RCA: 156] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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49
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Teltewskoi M, Panetier J, Macgregor S, Braun T. A Highly Reactive Rhodium(I)-Boryl Complex as a Useful Tool for CH Bond Activation and Catalytic CF Bond Borylation. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001070] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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50
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Jana A, Roesky HW, Schulzke C, Samuel PP. Reaction of Tin(II) Hydride with Compounds Containing Aromatic C−F Bonds. Organometallics 2010. [DOI: 10.1021/om1000106] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anukul Jana
- Institut für Anorganische
Chemie der Universität Göttingen, Tammannstrasse 4,
37077 Göttingen, Germany
| | - Herbert W. Roesky
- Institut für Anorganische
Chemie der Universität Göttingen, Tammannstrasse 4,
37077 Göttingen, Germany
| | - Carola Schulzke
- School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
| | - Prinson P. Samuel
- Institut für Anorganische
Chemie der Universität Göttingen, Tammannstrasse 4,
37077 Göttingen, Germany
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