66269-83-8
ethyl 2-methyl-3-oxo-3-(2-pyridyl)propanoate
→
6294-56-0
5-ethyl-5-pyridin-2-ylimidazolidine-2,4-dione
3238-55-9
2-丙酰基吡啶
+
151-50-8
氰化钾
100-70-9
2-氰基吡啶