使用不同阳离子引发剂聚合环戊烯（ＣＰ），得到了低聚合度的ＣＰ齐聚物。ＩＲ和￣１ＨＮＭＲ研究发现齐聚物链端碳阳离子通过质子消去反应生成了相应的不饱和端基，这种通过质子消去机理发生的链转移反应和生成稳定叔碳阳离子的１，２－Ｈ转移反应导致了聚合反应的低聚合度。ＣＰ在甲苯中不发生聚合反应而是通过链转移反应与甲苯生成偶合产物。 Polycyclopentene (CP) was polymerized using different cationic initiators to give CP oligomers of low degree of polymerization. IR and ¯ 1 H NMR study found that the end of oligomers oligomers through the proton elimination reaction of the corresponding unsaturated end groups generated by this proton elimination mechanism of the chain transfer reaction and the generation of stable tertiary carbon cation 1,2-H transfer The reaction leads to a low degree of polymerization of the polymerization reaction. CP did not polymerize in toluene but generated a coupling product with toluene by a chain transfer reaction.