3-ethyl-2-methy-1,3-benzothiazol-3-ium perchlorate 、
2,5-diformyl-7-phenyl-3-ethoxycarbonylthiazolo[2',3',4':4,5,6]pyrido[1,2-a]pyrimidine 以
乙酸酐 为溶剂,
反应 0.08h,
以54%的产率得到2,5-bis[2-(3-ethylbenzothiazolio-2-yl)vinyl]-7-phenylthiazolo[2',3',4':4,5,6]pyrido[1,2-a]pyrimidinium diperchlorate