35547-63-8Relevant academic research and scientific papers
Decomposition Reaction of 3-Aryl-6-disubstituted Amino-1,4,2,5-dithiadiazines in the Solid State
Yonemoto, Katsumi,Shibuya, Isao
, p. 2407 - 2409 (2007/10/02)
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.
Reaction of 1,4,2-Dithiazolium Salts with Amino Compounds
Yonemoto, Katsumi,Shibuya, Isao
, p. 4043 - 4050 (2007/10/02)
Systematic studies on the behavior of 1,4,2-dithiazolium cations (1) toward various amino compounds (ammonia, aliphatic and aromatic amines, hydrazine, semicarbazide, thiosemicarbazide derivatives, etc.) were performed.The reaction pathway could be classified into three types depending on possibile three fission modes of the initially-formed adduct.The main products were 5-imino-1,4,2-dithiazole, thiourea, and 1,3,4-thiadiazole derivatives, through the three different pathways, respectively.In order to clarify the factors controlling the reaction courses, the reactions of 1 with p-substituted aniline derivatives were carried out under systematically varying conditions.The strength of bases and the polaritiy of solvents had clear influence on the reactivity.The reaction mechanism is also discussed.
