Characteristic features of interaction between (5-methyl-1,3-thiazolidin-2-ylidene) ketones and tosyl azide

(5-Methyl-1,3-thiazolidin-2-ylidene) ketones, depending on the substituent in the ylidene part of the molecule, interact with tosyl azide to form (5,6-dihydro[1,3]thiazolo[3,2-c][1,2,3]triazol-3-yl) ketones and N-[(5,6-dihydro[1,3]thiazolo[3,2-c][1,2,3]triazol-3-yl)alkylidene]-tosylamides.