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  • 1
    Electronic Resource
    Electronic Resource
    Halogen-Kohlenstoff-Schwefel-Verbindungen: Zur Chemie von 1,1,1,4,4,4-Hexafluor-2-buten-2,3-bissulfenylchlorid (1994)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 533-539 
    Details
    ISSN: 0009-2940
    Keywords: Bissulfenyl chlorides ; fluoro substituted ; 1,3-Dithioles ; 1,3,2-Dithiazoles ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Halogen-Carbon-Sulfur Compounds: Syntheses with 1,1,1,4,4,4-Hexafluoro-2-butene-2,3-bissulfenyl ChlorideThe bifunctional bissulfenyl chloride 3 is obtained by chlorination of the dithiete 1 or tetrathiocine 2. By excessive chlorination the saturated bissulfenyl chloride 4 is formed. 3 reacts with primary amines to yield the 1,3,2-dithiazoles 5a-e, whereas by reactions with active methylene compounds like ketones or β-dicarbonyls the compounds 7-14 are obtained with HCl elimination. 13 as well as 14 are converted into the carboxylic acid 15 from which the 1,3-dithiole 17 is obtained by decarboxylation. 3 reacts with disulfene to form tetrakis-(trifluoromethyl)tetrathiafulvalene as well as 4,4′,5,5′-tetrakis(trifluoromethyl)-2,2′-spirobi[1,3-dithiole] (18), whose crystal structure has been determined.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19941270312
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  • 2
    Electronic Resource
    Electronic Resource
    On the Synthesis of Sulfoxonium Ylides: New Aspects of the Chemistry of 1,3-Dithietane 1,1,3,3-Tetraoxide and 1,3,5-Trithiane 1,1,3,3,5,5-Hexaoxide (1996)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 161-167 
    Details
    ISSN: 0009-2940
    Keywords: Sulfoxonium ylides ; 1,3-Dithietane 1,1,3,3-tetraoxide, silylated ; 1,3,5-Trithiane 1,1,3,3,5,5-hexaoxide, silylated ; Disulfenes, unsaturated ; Disulfenes, dianions of ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Sulfoxonium ylides 3a-h were synthesized by silylation of the cyclic methylene disulfones 1,3-dithietane 1,1,3,3-tetraoxide (1) and 1,3,5-trithiane 1,1,3,3,5,5-hexaoxide (4) with the silylating agents silyl nonafluorobutanesulfonates. The structure and constitution of the ylides were established with 1H-NMR, 13C-NMR, 29Si-NMR spectroscopy, mass spectrometry, and elemental analysis. On the route to the sulfoxonium ylides a new class of unsaturated disulfenes 7, 8, 12, 13 of 1 and 4 were synthesized via Knoevenagel and substitution reactions. Dianions of newly formed alkyl disulfenes 16a, b, e, f, and the trianion 17 were prepared and characterized by 1H-NMR and 13C-NMR spectroscopy and compared with the results of the ylides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19961290209
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