Chiral and achiral (imino)phenoxy-based cationic group 4 non-metallocene complexes as catalysts for polymerization of renewable α-methylene-γ-butyrolactones
作者:Ravikumar R. Gowda、Eugene Y.-X. Chen
DOI:10.1039/c3dt50430a
日期:——
characterized spectroscopically, and their structures have been confirmed by single crystal X-ray diffraction analysis. Characteristics of the coordination polymerization of renewable α-methylene-γ-butyrolactone monomers by the cationic catalysts derived from achiral complexes 1 and 2 as well as chiral complex 3 have been investigated, representing the first study of such polymerization by non-metallocene
M(Bn)4(M = Zr,Ti; Bn =苄基)的等摩尔质子分解2,4-二叔丁基-6-[((2,6-二异丙基苯基亚氨基)甲基]苯酚[(2,6- i Pr 2 C 6 H 3)N C(3,5- t Bu 2 C 6 H 2)OH]在甲苯在−30°C至25°C的温度下,纯净地得到相应的非手性(亚氨基)苯氧基-三苄基配合物,[(2,6- i Pr 2 C 6 H 3)N C(3,5- t Bu 2 C 6 H 2)O] Zr(Bn)3(1)和[(2,6- i Pr 2 C 6 H 3)N C(3,5- t Bu 2 C 6 H 2)O] Ti(Bn)3(2)。手性二苄基配合物3结合了不对称的四齿氨基(亚氨基)双(苯氧基)配体,[2,4-Br 2 C 6 H 2(O)(6-CH 2(NC 5 H 9))CH 2 N CH(2-金刚烷基-还使用相同的质子分解方案制备了4-MeC 6 H 2 O)]