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  • 1
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of New 2,5-Dihydro-1,2,3,5-thiatriazole 1-Oxides and 3,4-Dihydro-2H-1,2,4,3-triazaphosphole 3-OxidesMethyl 2-alkylamino- or 2-arylamino-2-(2-arylhydrazono)acetates 1 react with thionyl chloride in the absence of bases to give 5-alkyl- or 5-aryl-4-methoxycarbonyl-2,5-dihydro-1,2,3,5-thiatriazole 1-oxides 3. Reaction of alkylphosphonic dichlorides and 2 mol triethylamine with 1 yields 3,4-dialkyl-2-aryl-5-methoxycarbonyl-3,4-dihydro-2H-1,2,4,3 triazaphosphole 3-oxides 4.
    Notes: Methyl-2-alkylamino- oder Methyl-2-arylamino-2-(2-arylhydrazono)acetate 1 reagieren mit Thionylchlorid ohne Basenzusatz zu 5-Alkyl- oder 5-Aryl-4-methoxycarbonyl-2,5-dihydro-1,2,3,5-thiatriazol-1-oxiden 3. Mit Alkylphosphonsäuredichloriden und 2 mol Triethylamin setzt sich 1 zu 3,4-Dialkyl-2-aryl-5-methoxycarbonyl-3,4-dihydro-2H-1,2,4,3-triazaphospol-3-oxiden 4 um.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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