Ring-opening polymerization of rac-lactide by mononuclear zinc complexes that contain chiral tetra-azane ligands
作者:Yancheng Han、Qiyun Feng、Yongfang Zhang、Yunping Zhang、Wei Yao
DOI:10.1016/j.poly.2016.10.010
日期:2017.1
Abstract A series of zinc complexes supported by chiral tetra-azane ligands, (1R,2R)-[(NHAr)C6H4CH N]2C6H10 (L1H2 (Ar = 2,6-iPr2C6H3); L2H2 (Ar = 2,6-Et2C6H3); L3H2 (Ar = 2,6-Me2C6H3); L4H2 (Ar = 4-MeC6H4)), were synthesized via the reactions of the corresponding ligands with ZnMe2. These complexes were well characterized by NMR spectroscopy and elemental analysis. The molecular structures of L2Zn
摘要手性四氮烷配体(1R,2R)-[((NHAr)C6H4CH N] 2C6H10(L1H2(Ar = 2,6-iPr2C6H3); L2H2(Ar = 2,6-Et2C6H3) ;通过相应配体与ZnMe 2的反应合成了L 3 H 2(Ar = 2,6-Me 2 C 6 H 3); L 4 H 2(Ar = 4-MeC 6 H 4)。这些配合物已通过NMR光谱和元素分析得到了很好的表征。X射线衍射研究进一步证实了L2Zn(2)和L3Zn(3)的分子结构。锌络合物是外消旋丙交酯的开环聚合反应的有效引发剂,可产生富含杂规的聚丙交酯。