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  • 1
    Electronic Resource
    Electronic Resource
    (Perfluoralkyl)(dimethylamino)sulfonium-hexafluoroarsenate (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 31-38 
    Details
    ISSN: 0009-2940
    Keywords: Fluorosulfonium salts, reaction with nucleophiles ; (Perfluoroakyl)(dimethylamino)sulfonium salts, preparation and structures of ; Methoxysulfinyl hexafluoroarsenate, alkylation with ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: (Perfluoroalkyl)(dimethylamino)sulfonium HexafluoroarsenatesMeN = S(CF3)2 (5) is alkylated by Me3O⊕ AsF⊖6 to Me2N-S(CF3)⊕2 AsF⊖6 (4). From 5 and MeOSO⊕ AsF⊖6 (6) MeOS(O)-N(Me)S(CF3)⊕2 AsF⊖6 (7) is formed as a relatively stable primary product. Decomposition of 7 gives the expected 4 only in poor yield. Nucleophilic substitution of the sulfur-bonded fluorine in CF3SF⊕2 AsF⊖6 (8) by Me3SiNMe2 yields CF3S(NMe2)⊕2 AsF⊖6 (9). Similarly, (CF3)2CFSF⊕2 AsF⊖6 (10) reacts with dimethyl(trimethylsilyl)amine to give (CF3)2CFS(NMe2)⊕2 AsF⊖6 (11). The structures of 4 and 9 are elucidated by X-ray analyses, and the influence of the substituents on the bonding is discussed.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240106
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesen und Reaktionen von Perfluoralkyl-Derivaten des ThiazyltrifluoridsDiese Arbeit wurde im Institut für Anorganische Chemie der Universität Göttingen durchgeführt. (1988)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 121 (1988), S. 457-460 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses and Reactions of Perfluoroalkyl Derivatives of Thiazyl TrifluorideSyntheses of mono- and disubstituted products of thiazyl trifluoride [NSF2C2F5 (4c), NSFRf(NMe2) (11a, b: Rf = C2F5, i-C3F7)] are described. The reaction of NSF2Rf (4) with (Me3Sn)2O (12) gives S-(perfluoralkyl)sulfur oxide monofluoride imides Me3Sn-NSOFRf (15a, b: Rf = i-C3F7, t-C4F9), which form sulfonamides [Me3Sn—NH—SO2CF(CF3)2 (19)] by hydrolysis.
    Notes: Die Synthesen von Mono- und Disubstitutionsprodukten des Thiazyltrifluorids [NSF2C2F5 (4c), NSFRf(NMe2) (11a, b: Rf = C2F5, i-C3F7)] werden beschrieben. Die Umsetzung von NSF2Rf (4) mit (Me3Sn)2O (12) liefert S-(Perfluoralkyl)schwefeloxid-mono-fluorid-imide Me3SnNSOFRf (15a, b: Rf = i-C3F7, t-C4F9), deren Hydrolyse Sulfonsäureamid-Derivate [Me3Sn—NH—SO2CF(CF3)2 (19)] ergibt.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19881210311
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  • 3
    Electronic Resource
    Electronic Resource
    Isocyanatosulfonium-Salze (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 2411-2416 
    Details
    ISSN: 0009-2940
    Keywords: Sulfur imides, N-(fluoroformyl)-, preparation of, reactions with AsF5 ; Isocyanatosulfonium salts, preparation and structures of ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Isocyanatosulfonium SaltsRR'SF2 reacts with Me3SiNCO to give the corresponding N-(fluoroformyl)sulfur imides FC(O)NSRR' [R = NMe2, R' = F (7); R' = CF3 (9)]. From these AsF5 abstracts F- with formation of isocyanatosulfonium salts ONC - SRR' + AsF-6 [R = F, R' = CF3 (6); R = NMe2, R' = F (8); R = NMe2, R' = CF3 (10)]. The spectroscopic properties of the fluoroformyl derivatives and of the isocyanato salts are discussed. The structures of 8 and 10 are determined by X-ray analyses.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911241106
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  • 4
    Electronic Resource
    Electronic Resource
    Untersuchungen zur Lewis-Acidität fluorierter Sulfonium-IonenProfessor Alois Haas zum 60. Geburtstage gewidmet (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 615 (1992), S. 117-122 
    Details
    ISSN: 0044-2313
    Keywords: Sulfonium salts ; Lewis acidity ; sulfuranonium salts ; persulfuranonium salts ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Lewis Acidity of Fluorinated Sulfonium IonsNMR investigations show, that sulfonium salts [(CF3)nSF3-n]+ AsF6- (1-3, n = 0-2) add CH3CN under formation of ψ-pentacoordinated sulfuranonium ions [(CF3)nSF3-n · NCCH3]+ (1a - 3a,) with the donor in an axial position. In solution NSF3 (4,) forms similar salts [(CF3)nSF3-n · NSF3]+ AsF6- (1b-3b,) with weaker donor-acceptor interactions. With NSF2NMe2 (5,) the step of the primary addition products is passed very quickly, by fluoride-migration from 1, and 2, persulfuranonium ions [(CH3)2NSF3NSF2]+ (6,) and [(CH3)2NSF3NSFCF3]+ (7,), respectively, are formed, while from 3, only decomposition products (Me2NSF2+, CF3SSCF3, CF4) were obtained.
    Notes: NMR-Untersuchungen zeigen, daß Sulfoniumsalze [(CF3)nSF3-n]+ AsF6- (1-3, n = 0-2) CH3CN addieren unter Bildung ψ-pentakoordinierter Sulfuranoniumionen [(CF3)nSF3-n · NCCH3]+ mit axialständigem Donor. NSF3 (4,) bildet in Lösung die analogen Salze [(CF3)n SF3-n · NSF3]+ AsF6- (1b-3b,) mit schwächerer Donor-Akzeptor-Wechselwirkung. Bei Umsetzungen mit NSF2NMe2 (5,), wird die Stufe der Primärprodukte sehr schnell durchlaufen; unter Fluoridwanderung kommt es mit 1, und 2, zur Bildung von Persulfuranonium-Ionen ([(CH3)2NSF3NSF2]+ (6,) bzw. [(CH3)2NSF3NSFCF3]+ (7,)), während aus der Umsetzung mit 3, nur Zersetzungsprodukte (Me2NSF2+, CF3SSCF3, CF4) erhalten wurden.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926150924
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  • 5
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    Untersuchungen zur Lewis-Acidit�t fluorierter Sulfonium-Ionen (1992)
    Wiley
    Details
    Publication Date: 1992-09-01
    Print ISSN: 0044-2313
    Electronic ISSN: 1521-3749
    Topics: Chemistry and Pharmacology
    Published by Wiley
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