82833-95-2
dibromomethylidenecyclobutane
+
106-99-0
1,3-丁二烯
→
~36%
89203-45-2
6-ethenylbicyclo[3.2.0]hept-1(5)-ene
89203-46-3
1-methylidene-2-prop-2-enylidenecyclopentane