4-[2-(4-Chloro-phenyl)-5-methyl-1,1-dioxo-1,2-dihydro-1λ6-[1,2]thiazin-3-yl]-2,3,3-tricyano-butyronitrile 以
二甲基亚砜 为溶剂,
反应 24.0h,
以56%的产率得到4-[2-(4-Chloro-phenyl)-5-methyl-1,1-dioxo-1,6-dihydro-2H-1λ6-[1,2]thiazin-(3E)-ylidene]-2,3-dicyano-but-2-enenitrile