4-[1-(4-Hydroxy-3-methoxy-phenyl)-meth-(E)-ylidene]-3-methyl-5-oxo-4,5-dihydro-pyrazole-1-carbothioic acid (4-methoxy-phenyl)-amide 、
硫脲 在
氢氧化钾 作用下,
以
甲醇 为溶剂,
反应 3.5h,
以61%的产率得到4-(4-Hydroxy-3-methoxy-phenyl)-6-imino-3-methyl-6,7-dihydro-4H-pyrazolo[3,4-d][1,3]thiazine-1-carbothioic acid (4-methoxy-phenyl)-amide