Several aluminium alkyl and alkyloxide complexes supported by a thioether-bridged salen ligand were synthesized by the protonolysis reaction. Reactions of N,N’-bis(3,5-di-tert-butylsalicylidene)-2,2’-diaminophenylsulfide (H₂L) with one or two equivalents of AlMe₃ in toluene at 100 °C afforded the corresponding mono- and binuclear aluminium methyl complexes LAlMe (1) and L(AlMe₂)₂ (2). Treatment of the in situ generated complex 1 with one equivalent of ROH (R = PhCH₂, ⁱPr, CH₃OCH₂CH₂) produced the desired aluminium alkyloxide complexes LAlOCH₂Ph (3), LAl(OⁱPr) (4) and LAlO(CH₂)₂OCH₃ (5). All the molecular structures were established by single crystal X-ray diffraction studies. It was found that aluminium alkyloxide complexes 3-5 showed higher catalytic activity for the homopolymerization of ε-caprolactone (ε-CL) than corresponding aluminium methyl complexes 1 and 2. Furthermore, these alkyloxide complexes were also efficient initiators for the copolymerization of L-lactide and ε-CL to give practically random copolymers.

通过质子分解反应合成了几种由硫醚桥连的 salen 配体支持的烷基铝和烷基氧化物配合物。的反应N，N-双（3,5-二-叔-butylsalicylidene）-2,2'- diaminophenylsulfide（H ₂大号）与阿尔梅的一个或二当量₃在甲苯中在100℃下，得到相应的单和双核铝甲基配合物L AlMe( 1 )和L (AlMe ₂ ) ₂ ( 2 )。的治疗在原位生成的复1与一个当量的ROH（R =的PhCH ₂，^我Pr, CH ₃ OCH ₂ CH ₂ ) 产生所需的烷氧基铝配合物L AlOCH ₂ Ph ( 3 )、L Al(O ⁱ Pr) ( 4 ) 和L AlO(CH ₂ ) ₂ OCH ₃ ( 5 )。所有分子结构均通过单晶 X 射线衍射研究确定。据发现，铝alkyloxide络合物3 - 5表现出较高的催化活性的均聚ε己内酯（ε-CL) 比相应的甲基铝配合物1和2。此外，这些烷基氧化物配合物也是L-丙交酯和ε -CL 共聚以得到几乎无规共聚物的有效引发剂。