Exploring Steric Effects of Zinc Complexes Bearing Achiral Benzoxazolyl Aminophenolate Ligands in Isoselective Polymerization of <i>rac</i>-Lactide
作者:Jianwen Hu、Chao Kan、Haiyan Ma
DOI:10.1021/acs.inorgchem.8b01839
日期:2018.9.4
aminophenol proligands. All of the complexes were obtained as racemates, and the X-ray diffraction studies confirmed the monomeric structures of typical complexes 11 and 12, where the metal center is tetra-coordinated by three donors of the aminophenolate ligand and one silylamido group. All of the complexes proved to be efficient initiators for the ring-openingpolymerization of rac-lactide (rac-LA) at ambient
一系列三齿的非手性苯并恶唑基氨基苯酚锌络合物的,LZnN(森达3)2(L = 2 - [benzoxazoly-CH 2 N(R 3) - ] CH 2 } -6--R 1 -4-R 2 - C 6 H 2 O,R 1= R 2= Cl,R 3= Bn(1); R 1= R 2=t Bu,R 3= Bn(2); R 1=三苯甲基,R 2= Me:R 3 = Bn(3); R 3=苯乙基(4); R 3= 3-甲基丁基(7);R 3=正己基(8);R 3=环戊基(9);R 3=环辛基(11);通过Zn [N(SiMe 3)2 ] 2和1当量的相应氨基酚配体的反应合成R 3= 1-金刚烷基(12)。所有的配合物都是外消旋体,X射线衍射研究证实了典型配合物11和12的单体结构。,其中金属中心由氨基酚酸酯配体的三个供体和一个甲硅烷基团四配位。事实证明,所有配合物都是外消旋丙交酯(rac -LA)