N1-[3,5-di(trifluoromethyl)phenyl]-2-(1,1-dioxo-4-phenyl-1,4-dihydro-1λ6,2,4-benzothiadiazin-3-yl)-1-hydrazinecarboxamide 在
三氯氧磷 作用下,
以81%的产率得到2-[3,5-di(trifluoromethyl)anilino]-10-phenyl-5,10-dihydro-5λ6-benzo[e][1,2,4]triazolo[1,5-b][1,2,4]thiadiazine-5,5-dione