diphenylmethanol was employed to react with Complex 2, THF-ligated monomeric complex LBrMgOCHPh2(THF) (6) was afforded. The catalytic performances of these magnesium complexes for ring-opening polymerization of ε-caprolactone (ε-CL), δ-valerolactone (δ-VL), and γ-butyrolactone (γ-BL) were evaluated.
卤代
β-二酮亚
氨基
镁丁基配合物 L X MgBu(THF) (X = Cl ( 1 ), Br ( 2 )) 和烯丙基配合物 L X Mg(allyl)(THF) (X = Cl ( 3 ), Br ( 4 )) (L Cl = ((2,6-Cl 2 C 6 H 3 )N=C(Me)CH=C(Me)N(2,6-Cl 2 C 6 H 3 )), L Br = ( (2,6-Br 2 C 6 H 3 )N=C(Me)CH=C(Me)N(2,6-Br 2 C 6 H 3)) 进行了制备和表征。用(S)-1-苯基
乙醇处理丁基络合物2得到相应的醇盐络合物[L Br MgOCHMePh] 2 ( 5 ),其二聚体结构经单晶X射线衍射证实。当使用庞大的
二苯甲醇与络合物2反应时,得到 THF 连接的单体络合物 L Br MgOCHPh 2 (THF) ( 6 )。这些
镁配合物对
ε-己内酯(ε -CL)、
δ-戊内酯(δ