699-83-2
2,6-二羟基苯乙酮
+
95-92-1
乙二酸二乙酯
→
~41%
50521-64-7
ethyl 5-hydroxy-4-oxochromene-2-carboxylate
64-17-5
乙醇
53878-47-0
5-羟基-4-氧代-4H-色烯-2-羧酸