119-67-5
邻羧基苯甲醛
→
~50%
55294-87-6
2-(3-oxo-1H-2-benzofuran-1-yl)phthalazin-1-one
119-39-1
1-(2H)-酞嗪酮
+
55294-88-7
2,2'-(azinodimethylidyne)bis-benzoic acid