2-<7-(4,6-Diphenyl-2H-pyran-2-ylidene)-4-chloro-3,5-trimethylene-1,3,5-heptatrienyl>-4,6-diphenylpyrylium perchlorate 在
0.5 N aqueous alcoholic alkali 作用下,
以
二氯甲烷 为溶剂,
生成
(2Z,4Z,6Z)-7-{2-Chloro-3-[2-[4,6-diphenyl-pyran-(2E)-ylidene]-eth-(E)-ylidene]-cyclohex-1-enyl}-5-hydroxy-1,3-diphenyl-hepta-2,4,6-trien-1-one