Ring-Enlargement Reaction of 3-Alkyl-2-(N-cyanoimino)thiazolidine 1-Oxide: Formation of Novel 5,6-Dihydro-2H-1,2,4-thiadiazin-3(4H)-one Derivatives

Article abstract of DOI:10.1055/s-1997-778

The reaction of 3-alkyl-2-(N-cyanoimino)thiazolidine 1-oxides (4) with trifluoroacetic anhydride resulted in a ring-enlargement reaction to give novel 5,6-dihydro-2H-1,2,4-thiadiazin-3(4H)-one derivatives (6).