O-Benzenedisulfonimide as a recyclable cationic organocatalyst for the controlled/living ring-opening polymerization of δ-valerolactone and ε-caprolactone

Yu Jin, Yufeng Ji, Xiaojiang He, Suli Kan, Haidong Xia, Binqi Liang, Jia Chen, Hao Wu, Kai Guo, Zhenjiang Li