2-methyl-4,6-diphenyl thiopyrylium perchlorate 、
2-methylthio-4,6,-diphenylthiopyrylium methylsulfate 在
sodium acetate 作用下,
以
溶剂黄146 为溶剂,
反应 0.5h,
以21%的产率得到2-<5-(4,6-diphenyl-2-thiopyranylidene)penta-1,3-dien-1-yl>-4,6-diphenylthiopyrylium perchlorate