3,4,6-triphenylpyran-2-thione

三苯基磷

二苯基环丙烯酮

4,5-二苯基-3H-1,2-二硫杂环戊烯-3-硫酮

4-acetyl-5-hydroxy-5-methyl-2,3-diphenylcyclopent-2-en-1-one