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  • 1
    Electronic Resource
    Electronic Resource
    Thion- und Dithioester, XXIV. Synthese von Tetrathiooxalestern (1980)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 113 (1980), S. 1898-1906 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thiono and Dithio Esters, XXIV. Synthesis of TetrathiooxalatesReduction of carbon disulfide with potassium in dimethylformamide and subsequent alkylation yields the isotrithiones 2, which have been desulfurised with mercury acetate to give the 1,3-dithiol-2-ones 3. 2a is also available by a stepwise synthesis starting with methyl (methylthio)dithioacetate (6). The photochemical decarbonylation of 4,5-bis(methylthio)-1,3-dithiol-2-one (3a) leads to the formation of dimethyl tetrathiooxalate (11a). In solution 11a is in equilibrium with its [4 + 2] dimer 13. Cyclic tetrathiooxalates are probably unstable at room temperature.
    Notes: Durch Reduktion von Schwefelkohlenstoff mit Kalium in Dimethylformamid und anschließende Alkylierung erhält man die Isotrithione 2, die sich mit Quecksilber(II)-acetat zu den 1,3-Dithiol-2-onen 3 entschwefeln lassen. 2a ist auch über mehrere Stufen aus (Methylthio)dithioessigsäure-methylester (6) zugänglich. Die photochemische Decarbonylierung von 4,5-Bis(methylthio)-1,3-dithiol-2-on (3a) liefert Dimethyl-tetrathiooxalat (11a), das in Lösung mit seinem [4 + 2]-Dimeren 13 im Gleichgewicht steht. Cyclische Tetrathiooxalester sind bei Raumtemp. vermutlich instabil.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19801130525
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  • 2
    Electronic Resource
    Electronic Resource
    Thiooxalsäureester als Dithiabutadiene (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 90 (1978), S. 1016-1017 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19780901232
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  • 3
    Electronic Resource
    Electronic Resource
    Thion- und Dithioester, XXX. Reaktionen von Isocyaniden mit Thiooxalestern (1982)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 3107-3114 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thiono and Dithio Esters, XXX. Reactions of Isocyanides with ThiooxalatesDimethyl tetrathiooxalate (1) reacts with all isocyanides 2 investigated to form 2-imino-1,3-dithioles 4 in high yield. Complex mixtures of products, however, are obtained from O,O-dimethyl dithiooxalate (5) and isocyanides. The main product is always the 1,3-thiazetidine 7, by-products are the azetidinethiones 8 and the 3,3′-biazetidine-2,2′-dithiones 6.
    Notes: Tetrathiooxalsäure-dimethylester (1) bildet mit allen untersuchten Isocyaniden 2 in einheitlicher Reaktion die 2-Imino-1,3-dithiole 4. Komplexe Produktgemische entstehen hingegen bei der Umsetzung von Dithiooxalsäure-O, O-dimethylester (5) mit Isocyaniden. Hauptprodukt ist stets das 1,3-Thiazetidin 7, Nebenprodukte sind die Azetidinthione 8 und 3,3′-Biazetidin-2,2′-dithione 6.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19821150916
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  • 4
    Electronic Resource
    Electronic Resource
    Thiooxalates as Dithiabutadienes (1978)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 17 (1978), S. 953-954 
    Details
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.197809532
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  • 5
    Electronic Resource
    Electronic Resource
    Thion- und Dithioester, XXVIII. [2 + 4]-Cycloadditionen mit Tetrathiooxalestern (1980)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1980 (1980), S. 1482-1488 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thiono and Dithio Esters, XXVIII.  -  [2 + 4]-Cycloadditions with TetrathiooxalatesDimethyl tetrathiooxalate (2) reacts with dienes as a [22π]-component and with olefins or acetylenes as a [42π]-component to form [2 + 4]-cycloadducts.
    Notes: Tetrathiooxalsäure-dimethylester (2) reagiert mit Dienen als [2π]-Komponente und mit Olefinen oder Acetylenen als [42π]-Komponente unter Bildung von [2 + 4]-Cycloaddukten.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198019801005
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