Abstract A method for the synthesis of previously inaccessible 5-dialkylamino-substituted 1, 2, 3-thiadiazole-4-carbaldehydes was developed. Ring transformation in these compounds induced by primary aliphatic and aromatic amines, hydroxylamines, and N-substituted hydrazines resulted in the synthesis of a broad range of 1, 2, 3-triazole-4-carbothioamide.