Stereo-selectivity switchable ROP of rac-b-butyrolactone initiated by salan-ligated rare-earth metal amide complexes: the key role of the substituents on ligand frameworks

Zhixing Zhuo a, Chen Zhang a, Yunjie Luo*bc（罗云杰）, Yaorong Wang*a（王耀荣）, Yingming Yao*ac（姚英明）, Dan Yuan a and Dongmei Cui c

a Key Laboratory of Organic Synthesis of Jiangsu Province, and State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China.

b School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, People’s Republic of China.

c State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People’s Republic of China.

Chem. Commun., 2018, 54, 11998--12001

A series of novel salan-ligated rare-earth metal amide complexes were prepared and employed as initiators for the ROP ofrac-β-butyrolactone (rac-BBL). Tuning the substituents on the N atoms of the ligand frameworks from aromatic groups to aliphatic groups results in switching tacticity from iso-tactic to syndio-tactic inrac-BBL polymerization.

链接：https://pubs.rsc.org/en/Content/ArticleLanding/2018/CC/C8CC05469J#!divAbstract