5-Methyl-7-phenyl-2-<(4'-phenyl-6'-methyl-2'-pyrimidinylthio)acetyl>thiazolo<3,2-a>pyrimidinium-3-oxide 、
3-methyl-2-methylthiobenzothiazolium methyl sulfate 在
三乙胺 作用下,
以
乙酸酐 为溶剂,
以87%的产率得到7-phenyl-2-<(4-methyl-6-phenyl-2-pyrimidinylthio)acetyl>-5-<(3-methyl-2(3H)-benzothiazolylidene)methyl>thiazolo<3,2-a>pyrimidin-3-ylio oxide