930-30-3
2-环戊烯酮
+
75-07-0
乙醛
→
~67%
95122-71-7
5-ethylidenecyclopent-2-en-1-one
765-56-0
4-bromocyclopent-2-en-1-one
1826-67-1
乙烯基溴化镁
95122-67-1
542-92-7
环戊二烯