Decomposition Reaction of 3-Aryl-6-disubstituted Amino-1,4,2,5-dithiadiazines in the Solid State

Article abstract of DOI:10.1246/bcsj.62.2407

3-Diethylamino-6-phenyl-1,4,2,5-dithiadiazine, on standing in air at room temperature, decomposed to afford 5-diethylamino-3-phenyl- and 3,5-bis(diethylamino)-1,2,4-thiadiazoles, whereas in the melt and in solution it was remarkably stable.With increasing bulkiness of substituents (Ar and /or NR2) in 1,4,2,5-dithiadiazines, their stability in the solid state clearly enhanced.Some interstack interactions in the crystal seem to favor the decomposition.