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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 377 (1970), S. 273-277 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Elimination of HCl from 1,2-ethanol-dichloroarsine by means of triethylamine yields 1,5-epoxo-diarsa-2,6-dioxa-cyclooctane and 1,5-dichloro-diarsa-2,6-dioxacyclooctane 1,2-Chloroethyl-dichloroarsine gives on hydro- or thiolysis trimeric chloroethyl-arsenic-oxide and -sulphide, respectively. The latter adds thiourea to form a thiuronium salt which on alkaline hydrolysis gives 1,2-ethanethiol-arsenic sulphide as the main product; sometimes also 1,5-epithiodiarsa-2,6-dithiacyclooctane is formed, and also 1,5-epoxo-diarsa-2,6-dithiacyclooctane, which may be prepared from 1,2-ethanethiol-arsenic sulphide, too.
    Notes: Aus 1,2-Äthanol-dichlorarsin erhält man bei HCl-Abspaltung mit Triäthylamin 1,5-Epoxo-diarsa-2,6-dioxa-cyclooctan und 1,5-Dichlor-diarsa-2,6-dioxacyclooctan. 1,2-Chloräthyldichlorarsin gibt bei Hydrolyse oder Thiolyse trimeres Chloräthyl-arsenoxid bzw. -arsensulfid. Chloräthyl-arsensulfid addiert Thioharnstoff unter Bildung eines Thiuroniumsalzes, das bei alkalischer Hydrolyse hauptsächlich 1,2-Äthanthiol arsensulfid liefert. Nebenbei erhält man manchmal 1,5-Epithiodiarsa-2,6-dithia-cyclooctan und 1,5-Epoxo-diarsa-2,6-dithiacyclooctan, das auch aus 1,2-Äthanthiol-arsensulfid dargestellt werden kann.
    Type of Medium: Electronic Resource
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