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Synlett 2000; 2000(12): 1779-1780
DOI: 10.1055/s-2000-8690
DOI: 10.1055/s-2000-8690
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Reaction of 6-Aryl-1,5-diazabicyclo[3.1.0]hexanes with Aryl Isocyanates and Aryl Isothiocyanates
Further Information
Publication History
Publication Date:
31 December 2000 (online)
Heating 6-aryl-1,5-diazabicyclo[3.1.0]hexanes in the presence of aryl isocyanates or aryl isothiocyanates leads to the formation of the corresponding 2,3-diarylperhydropyrazolo[1,2-a][1,2,4]triazol-1-one or 2,3-diarylperhydropyrazolo[1,2-a][1,2,4]triazol-1-thione in good yield as a result of 1,3-dipolar cycloaddition of isocyanate (isothiocyanate) to an initially formed ylide.
diaziridine heterocycles - 1,3-dipolar cycloadditions - nitrogen ylides - isocyanates - isothiocyanates