ethyl 2-acetyl-3-oxo-4-(2-nitrophenyl)butanoate

2-硝基苯乙酸

丙二酸单乙酯钾盐

乙醇

5-(1-hydroxy-2-(2-nitrophenyl)ethylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione