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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1983 (1983), S. 274-278 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthese von N-Cyandithiocarbimidic acid Acid DerivativesThe nucleophilic dithiocarbonimidic acid derivatives 2a _ e and the isothiourea 2f react with the α-D-glucopyranosyl bromide 1 to yield the corresponding esters 3a _ f (cf. Scheme 1). 2a gives with the 3-hexenopyranos-2-ulosyl chloride 4 the ester 5b. Bis(bromomethyl)quinoxaline (8) yields with 2a _ c the esters 10a _ c (cf. Scheme 2). The reaction of the dipotassium salt 6 with 4 provides di-O-benzoylkojic acid (7), and with 8 the cyclic N-cyanodithiocarbonimidate 9 is obtained
    Notes: Die nucleophilen Dithiocarbimidsäure-Derivate 2a _ e sowie der Isothioharnstoff-Abkömmling 2f reagieren gemäß Schema 1 mit dem α-D-Glucopyranosylbromid 1 zu den Estern 3a _ f. Verbindung 2a liefert mit dem 3-Hexenopyranos-2-ulosylchlorid 4 den Ester 5b. Bis(brommethyl)chinoxalin (8) ergibt mit 2a _ c gemäß Schema 2 die Ester 10a _ c. Das Dikaliumsalz 6 liefert mit 4 Di-O-benzoylkojisäure (7) und mit 8 den cyclischen N-Cyandithiocarbimidsäure-diester 9.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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