Conditions for N-acylation of 2-amino-5-aryl-6H-1,3,4-thiadiazines with trifluoroacetic anhydride and halogen-substituted carboxylic acid halides with retention of the initial heterocyclic system were found. 5-Aryl-2-haloacylamino-6H-1,3,4-thiadiazines were obtained in preparative yields. Their reactions with hetarenethiols afforded N-hetarylthioacyl derivatives.
发现了在保留初始杂环系统的条件下,用
三氟乙酸酐和卤素取代的
羧酸酐对2-
氨基-5-芳基-6H-1,3,4-噻二嗪进行N-酰化的条件。在制备产量中获得了5-芳基-2-卤代酰
氨基-6H-1,3,4-噻二嗪。它们与杂环
硫醇反应得到了N-杂芳
硫代酰基衍
生物。