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Kong, Yung Cheol; Kim, Kyongtae; Ja Park, Yung
Tetrahedron, 09/2000, Letnik: 56, Številka: 37Journal Article
The reactions of (aryl)(chloro)methyl p-tolyl sulfoxides 2 with tetrasulfur tetranitride (S 4N 4) in p-dioxane at reflux gave 3,5-diaryl-1,2,4,6-thiatriazine 1-oxides, 3,5-diaryl-1,2,4-thiadiazoles, and 1-amino-3,5-diaryl-1,2,4,6-thiatriazine 1-oxides. For the first time, the structures of 3,5-diaryl-1,2,4,6-thiatriazine 1-oxides were unequivocally characterized based on X-ray crystallography of 3,5-di(3,4-dimethylphenyl)-1,2,4,6-thiatriazine 1-oxide. Treatment of the thiatriazine 1-oxides with m-CPBA gave 2,6-diaryl-4-(3-chlorophenyl)-1,3,5-triazines. Mechanisms are proposed for the formation of thiatriazine 1-oxides and 1,3,5-triazines.
