930-30-3
2-环戊烯酮
+
108-59-8
丙二酸二甲酯
→
~10%
111209-96-2
Dimethyl (3-oxocyclopentyl)malonate
72284-97-0
Methyl 1,4-dioxaspiro[4.4]non-7-ylacetate
90647-09-9
2-(1,4-Dioxaspiro[4.4]non-7-yl)ethanol