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Cunningham CC, Panger JL, Lupi M, Denmark SE. Organoselenium-Catalyzed Enantioselective Synthesis of 2-Oxazolidinones from Alkenes. Org Lett 2024; 26:6703-6708. [PMID: 39082836 DOI: 10.1021/acs.orglett.4c02377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
An operationally simple method for generating enantioenriched 2-oxazolidinones from N-Boc amines and mono- or trans-disubstituted alkenes via chiral organoselenium catalysis is described. Critical to the success of the transformation was the inclusion of triisopropylsilyl chloride (TIPSCl), likely because it sequestered fluoride generated by the oxidant (N-fluorocollidinium tetrafluoroborate) throughout the reaction and suppressed side reactivity. The scope of both the amine and alkene substrates was explored, generating a variety of 2-oxazolidinones in modest to high yields with high enantioselectivities.
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Affiliation(s)
- Carter C Cunningham
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Matthews Ave, Urbana, Illinois 61801, United States
| | - Jesse L Panger
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Matthews Ave, Urbana, Illinois 61801, United States
| | - Michela Lupi
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Matthews Ave, Urbana, Illinois 61801, United States
- Department of Chemistry "Ugo Schiff" (DICUS), University of Florence, Via della Lastruccia 13, Sesto Fiorentino (FI), 50019 Florence, Italy
| | - Scott E Denmark
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Matthews Ave, Urbana, Illinois 61801, United States
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2
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Haufe G. Selective Synthesis of Monofluorinated Compounds Applying Amine/HF Reagents. CHEM REC 2023; 23:e202300140. [PMID: 37229773 DOI: 10.1002/tcr.202300140] [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: 04/17/2023] [Revised: 05/09/2023] [Indexed: 05/27/2023]
Abstract
For nucleophilic monofluorination, amine/HF reagents such as Et3 N⋅3HF, Pyr⋅9HF (Olah's reagent) and similar combinations belong to the most frequently used fluoride sources, whereupon the selectivity of these reagents can be very different depending of its acidity, the nucleophilicity of the fluoride equivalent, and the structure of the particular substrate. These reagents can be used safely in ordinary chemistry laboratories for nucleophilic substitution reactions by fluoride at sp3 -hybridized carbon centers. For ring opening reactions of epoxides, the regio- and stereoselectivity is very much depending of the nature of the epoxide and the acidity of the HF reagent favoring either SN 1 or SN 2 type reactions. Similarly, the outcome of halofluorination and similar reactions with sulfur or seleno electrophiles can be controlled by the particular combination of the electrophile and the fluoride source. Examples for the application of these reaction types for the synthesis of fluorine-containing analogues of natural products or biologically relevant compounds are in the focus of this personal account.
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Affiliation(s)
- Günter Haufe
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, D-48149, Münster, Germany
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3
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Duvinage D, Mostaghimi F, Damrath M, Spils J, Komorr P, Odintsov DS, Fedin M, Shundrin LA, Mebs S, Beckmann J. Synthesis and Single-Electron Oxidation of Bulky Bis(m-terphenyl)chalcogenides: The Quest for Kinetically Stabilized Radical Cations. Chemistry 2023; 29:e202203498. [PMID: 36416222 DOI: 10.1002/chem.202203498] [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: 11/10/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 11/24/2022]
Abstract
Sterically encumbered bis(m-terphenyl)chalcogenides, (2,6-Mes2 C6 H3 )2 E (E=S, Se, Te) were obtained by the reaction of the chalcogen tetrafluorides, EF4 , with three equivalents of m-terphenyl lithium, 2,6-Mes2 C6 H3 Li. The single-electron oxidation of (2,6-Mes2 C6 H3 )2 Te using XeF2 /K[B(C6 F5 )4 ] afforded the radical cation [(2,6-Mes2 C6 H3 )2 Te][B(C6 F5 )4 ] that was isolated and fully characterized. The electrochemical oxidation of the lighter homologs (2,6-Mes2 C6 H3 )2 E (E=S, Se) was irreversible and impaired by rapid decomposition.
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Affiliation(s)
- Daniel Duvinage
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Strasse 7, 28359, Bremen, Germany
| | - Farzin Mostaghimi
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Strasse 7, 28359, Bremen, Germany
| | - Mattis Damrath
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Strasse 7, 28359, Bremen, Germany
| | - Julian Spils
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Strasse 7, 28359, Bremen, Germany
| | - Pascal Komorr
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Strasse 7, 28359, Bremen, Germany
| | - Danila S Odintsov
- N. N. Vorozhtsov Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, Acad. Lavrentiev Avenue 9, 630090, Novosibirsk, Russia
| | - Matvey Fedin
- Laboratory of Magnetic Resonance, International Tomography Center Siberian Branch of Russian Academy of Sciences, Institutskaya 3a, 630090, Novosibirsk, Russia
| | - Leonid A Shundrin
- N. N. Vorozhtsov Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, Acad. Lavrentiev Avenue 9, 630090, Novosibirsk, Russia
| | - Stefan Mebs
- Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195, Berlin, Germany
| | - Jens Beckmann
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Strasse 7, 28359, Bremen, Germany
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4
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Poleschner H, Seppelt K. Attempts to Synthesize a Thiirane, Selenirane, and Thiirene by Dealkylation of Chalcogeniranium and Thiirenium Salts. Chemistry 2021; 27:649-659. [PMID: 32737908 PMCID: PMC7821244 DOI: 10.1002/chem.202003461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Indexed: 02/05/2023]
Abstract
Thiiranium salts [Ad2 SR]+ X- (5, 8, 9, 11, 12; X- =Tf2 N- (Tf=CF3 SO2 ), SbCl6 - ) and seleniranium salts [Ad2 SeR]+ X- (14, 16, 17, 23-25; X- =Tf2 N- , BF4 - , CHB11 Cl11 - , SbCl6 - ) are synthesized from strained alkene bis(adamantylidene) (1). The disulfides and the diselenides (Me3 SiCH2 CH2 E)2 (4, 13), (tBuMe2 SiCH2 CH2 E)2 (7, 22), and (NCCH2 CH2 E)2 (10, 15; E=S, Se) have been used. The thiirenium salts [tBu2 C2 SR]+ X- (34) and [Ad2 C2 SR]+ X- (35, 36) are prepared from the bis-tert-butylacetylene (2) and bis-adamantyl-acetylene (3) with R=Me3 SiCH2 CH2 and tBuMe2 SiCH2 CH2 . Attempts to cleave off the groups Me3 SiCH2 CH2 , tBuMe2 SiCH2 CH2 , and NCCH2 CH2 resulted in thiiranes 27, 30. No selenirane Ad2 Se (33) is formed from seleniranium salts, instead cleavage to the alkene (1) and diselenide (13, 15) occurs. The thiirenium salt [Ad2 C2 SCH2 CH2 SiMe3 ]+ Tf2 N- (35) does not yield the thiirene Ad2 C2 S (37), the three-membered ring is cleaved, forming the alkyne (3) and disulfide (4). All compounds are characterized by ESI mass spectra, NMR spectra, and by quantum chemical calculations. Crystal structures of the salts 8, 12, 25, 17, 26, 36 and the thiiranes 27, 30 are presented.
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Affiliation(s)
- Helmut Poleschner
- Institut für Chemie und Biochemie, Anorganische ChemieFreie Universität BerlinFabeckstr. 34–3614195BerlinGermany
| | - Konrad Seppelt
- Institut für Chemie und Biochemie, Anorganische ChemieFreie Universität BerlinFabeckstr. 34–3614195BerlinGermany
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Oberling M, Irran E, Ohki Y, Klare HFT, Oestreich M. Cationic Ru–Se Complexes for Cooperative Si–H Bond Activation. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marvin Oberling
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
| | - Elisabeth Irran
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
| | - Yasuhiro Ohki
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
| | - Hendrik F. T. Klare
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
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Sharma KD, Kathuria P, Wetmore SD, Sharma P. Can modified DNA base pairs with chalcogen bonding expand the genetic alphabet? A combined quantum chemical and molecular dynamics simulation study. Phys Chem Chem Phys 2020; 22:23754-23765. [PMID: 33063082 DOI: 10.1039/d0cp04921b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A comprehensive (DFT and MD) computational study is presented with the goal to design and analyze model chalcogen-bonded modified nucleobase pairs that replace one (i.e., AXY:T, G:CXY, GXY:C) or two (GXY:CX'Y', X/X' = S, Se and Y/Y' = F, Cl, Br) Watson-Crick (WC) hydrogen bonds of the canonical A:T or G:C pair with chalcogen bond(s). DFT calculations on 18 base pair combinations that replace one WC hydrogen bond with a chalcogen bond reveal that the bases favorably interact in the gas phase (binding strengths up to -140 kJ mol-1) and water (up to -85 kJ mol-1). Although the remaining hydrogen bond(s) exhibits similar characteristics to those in the canonical base pairs, the structural features of the (Y-XO) chalcogen bond(s) change significantly with the identity of X and Y. The 36 doubly-substituted (GXY:CX'Y') base pairs have structural deviations from canonical G:C similar to those of the singly-substituted modifications (G:CXY or GXY:C). Furthermore, despite the replacement of two strong hydrogen bonds with chalcogen bonds, some GXY:CX'Y' pairs possess comparable binding energies (up to -132 kJ mol-1 in the gas phase and up to -92 kJ mol-1 in water) to the most stable G:CXY or GXY:C pairs, as well as canonical G:C. More importantly, G:C-modified pairs containing X = Se (high polarizability) and Y = F (high electronegativity) are the most stable, with comparable or slightly larger (by up to 13 kJ mol-1) binding energies than G:C. Further characterization of the chalcogen bonding in all modified base pairs (AIM, NBO and NCI analyses) reveals that the differences in the binding energies of modified base pairs are mainly dictated by the differences in the strengths of their chalcogen bonds. Finally, MD simulations on DNA oligonucleotides containing the most stable chalcogen-bonded base pair from each of the four classifications (AXY:T, G:CXY, GXY:C and GXY:CX'Y') reveal that the singly-modified G:C pairs best retain the local helical structure and pairing stability to a greater extent than the modified A:T pair. Overall, our study identifies two (G:CSeF and GSeF:C) promising pairs that retain chalcogen bonding in DNA and should be synthesized and further explored in terms of their potential to expand the genetic alphabet.
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Affiliation(s)
- Karan Deep Sharma
- Computational Biochemistry Laboratory, Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India. and Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Preetleen Kathuria
- Computational Biochemistry Laboratory, Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India.
| | - Stacey D Wetmore
- Department of Chemistry and Biochemistry, University of Lethbridge, Alberta T1K 3M4, Canada.
| | - Purshotam Sharma
- Computational Biochemistry Laboratory, Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, 160014, India.
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7
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Poleschner H, Seppelt K. Seleniranium and Telluriranium Salts. Chemistry 2018; 24:17155-17161. [DOI: 10.1002/chem.201804307] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Helmut Poleschner
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität Berlin Fabeckstrasse 34–36 14195 Berlin Germany
| | - Konrad Seppelt
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität Berlin Fabeckstrasse 34–36 14195 Berlin Germany
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Yadav S, Raju S, Singh HB, Butcher RJ. Selone-stabilized aryltellurenyl cations. Dalton Trans 2016; 45:8458-67. [PMID: 27111528 DOI: 10.1039/c6dt01081d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Controlled bromination of a diarylditelluride, R2Te2 (R = 2,6-dimethylphenyl) (6) in dichloromethane led to the formation of a Te(II)-Te(IV) mixed-valent tellurenyl bromide, RBr2TeTeR (7). A further reaction of 7 with 1,3-dibutylbenzimidazolin-2-selone, C15H22N2Se (L) (9), produced the first selone adduct of the 2,6-dimethylphenyltellurenyl cation with the 2,6-dimethylphenyltellurium dibromide anion, [(2,6-Me2C6H3)Te(L)](+)[(2,6-Me2C6H3)TeBr2](-) (10). The red colored cationic adduct 10 is not stable in acetonitrile and disproportionated to give the selone adduct of 2,6-dimethylphenyltellurenyl bromide, [(2,6-Me2C6H3)Te(L)Br] (11b) and bis(2,6-dimethylphenyl)tellurium dibromide, [(2,6-Me2C6H3)2TeBr2], (13). The metathesis reaction of 11b with AgBF4 produced a stable dark red colored selone adduct of the 2,6-dimethylphenyltellurenyl cation with the BF4(-) anion, [(2,6-Me2C6H3)Te(L)](+)BF4(-) (15). The selone adducts of aryltellurenyl halides, i.e. [(2,6-Me2C6H3)Te(L)X] (X = Cl, Br, I) (11a-11c), have been synthesized by a one-pot reaction of 6 with an equimolar mixture of 9 and 1,3-dibutylbenzimidazolin-2-dihaloselones, C15H22N2SeX2 (14a-14c). Triphenylphosphine (PPh3), when treated with [(2,6-Me2C6H3)Te(L)X] (11a-11c), substitutes selone from the adduct to afford the triphenylphosphine adducts of aryltellurenyl halides, [(2,6-Me2C6H3)Te(PPh3)X] (16a-16c).
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Affiliation(s)
- Sangeeta Yadav
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
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Affiliation(s)
- Stefanie Fritz
- Institut für
Chemie und Biochemie, Anorganische
Chemie, Freie Universität Berlin, Fabeckstrasse 34/36, 14195 Berlin, Germany
| | - Christian Ehm
- Institut für
Chemie und Biochemie, Anorganische
Chemie, Freie Universität Berlin, Fabeckstrasse 34/36, 14195 Berlin, Germany
| | - Dieter Lentz
- Institut für
Chemie und Biochemie, Anorganische
Chemie, Freie Universität Berlin, Fabeckstrasse 34/36, 14195 Berlin, Germany
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10
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Bendt G, Lapsien S, Steiniger P, Bläser D, Wölper C, Schulz S. Oxidative Addition of Diethylchalcogenanes to Lappert's Germylene and Stannylene. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201500023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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11
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Moos E, Augenstein T, Garnier D, Breher F. Synthesis and structures of 1,3-bis(organochalcogenyl) distannatrisilabicyclo[1.1.1]pentanes. CAN J CHEM 2014. [DOI: 10.1139/cjc-2013-0493] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The heteronuclear [1.1.1]propellane Sn2Si3Mes6 (1; Mes = 2,4,6-Me3C6H2) was reacted with the dichalcogenyl compounds PhE–EPh (E = S, Se, or Te) to furnish the 1,3-bis(organochalcogenyl) distannatrisilabicyclo[1.1.1]pentanes 3 (E = S), 4 (E = Se), and 5 (E = Te). The E–E bond addition reaction is reminiscent of the formation of FcS–Sn(SiMes2)3Sn–SFc (2; Fc = ferrocenyl) reported previously. Contrary to 2, for which it was shown that its formation can be enhanced by daylight, the analogous clusters 3–5 are very sensitive to light in solution. Solid samples are, however, stable for a prolonged period of time. All three compounds were characterized in detail, including X-ray structure analyses on single crystals of 3 and 5. The core structure connectivities of the clusters were fully confirmed by 119Sn, 77Se, and 125Te NMR spectroscopy, among others. In particular, the 117Sn–119Sn coupling constant between the formally nonbonded bridgehead tin atoms nicely correlates with the interbridgehead distance, i.e., a larger distance is associated with a smaller 117Sn–119Sn coupling constant, and vice versa. This coupling is mediated by so-called “back-lobe-to-back-lobe” interactions through cage. The detection of two different 77Se–119Sn and 125Te–119Sn couplings each (i.e., 1J and 2J) further supported these findings.
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Affiliation(s)
- Eric Moos
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, D-76131 Karlsruhe, Germany
| | - Timo Augenstein
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, D-76131 Karlsruhe, Germany
| | - Delphine Garnier
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, D-76131 Karlsruhe, Germany
| | - Frank Breher
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, D-76131 Karlsruhe, Germany
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Pop A, Wang L, Dorcet V, Roisnel T, Carpentier JF, Silvestru A, Sarazin Y. On the coordination chemistry of organochalcogenolates RNMe2^E− and RNMe2^E^O− (E = S, Se) onto lead(ii) and lighter divalent tetrel elements. Dalton Trans 2014; 43:16459-74. [DOI: 10.1039/c4dt02252a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The coordination chemistry of organochalcogenolato ligands containing hard (N, O) and soft (S, Se) atoms onto divalent Ge, Sn and Pb is explored.
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Affiliation(s)
- Alexandra Pop
- Departamentul de Chimie Anorganica
- Facultatea de Chimie si Inginerie Chimica
- Universitatea Babes-Bolyai
- RO-400028 Cluj-Napoca, Romania
| | - Lingfang Wang
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS – Université de Rennes 1
- 35042 Rennes Cedex, France
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS – Université de Rennes 1
- 35042 Rennes Cedex, France
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS – Université de Rennes 1
- 35042 Rennes Cedex, France
| | - Jean-François Carpentier
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS – Université de Rennes 1
- 35042 Rennes Cedex, France
| | - Anca Silvestru
- Departamentul de Chimie Anorganica
- Facultatea de Chimie si Inginerie Chimica
- Universitatea Babes-Bolyai
- RO-400028 Cluj-Napoca, Romania
| | - Yann Sarazin
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS – Université de Rennes 1
- 35042 Rennes Cedex, France
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XeF2/Fluoride Acceptors as Versatile One-Electron Oxidants. Angew Chem Int Ed Engl 2013; 52:12838-42. [DOI: 10.1002/anie.201307161] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Indexed: 11/07/2022]
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14
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Poleschner H, Seppelt K. XeF2/Fluoridakzeptoren als vielseitige Einelektronen-Oxidationsmittel. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307161] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Jackson VE, Dixon DA, Christe KO. Thermochemical Properties of Selenium Fluorides, Oxides, and Oxofluorides. Inorg Chem 2012; 51:2472-85. [DOI: 10.1021/ic202417n] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Virgil E. Jackson
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336, United States
| | - David A. Dixon
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487-0336, United States
| | - Karl O. Christe
- Loker Research
Institute and Department of Chemistry, University of Southern California, Los Angeles, California
90089-1661, United States
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