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
URL:
http://dx.doi.org/10.1002/jlac.198019800905
