76678-47-2
1,2-bis(chloromethyl)-3,4-dimethylenecyclobut-1-ene
→
3227-91-6
[4]轴烯
+
25467-12-3
1,2-dimethyl-3,4-dimethylidenecyclobutene
764-73-8
2,6-辛二炔
1194-30-5
3,4-二氯-1,2,3,4-四甲基环丁烯