Page 94 - 《精细化工》2023年第2期
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第 40 卷第 2 期                             精   细   化   工                                  Vol.40, No.2
             20 23 年 2 月                             FINE CHEMICALS                                  Feb.  2023


              催化与分离提纯技术
                          双核胺亚胺铝配合物的合成、结构及其


                                  在 ε-己内酯开环聚合中的应用



                                             3
                                                                      3
                                                                                                  3*
                                                         3
                     高爱红      1,2 ,赵修贤 ,游   淇 ,刘晓磊 ,姚   伟                          1,3* ,蒋绪川
                 (1.  济南大学  水利与环境学院,山东  济南  250022;2.  青岛科技大学  山东化工研究院,山东  济南
                 250014;3.  济南大学  材料科学与工程学院,山东  济南  250022)
                 摘要:利用四齿胺亚胺配体(1R,2R)-[(NHAr)C 6 H 4 CH==N] 2 C 6 H 10 (Ⅱ:Ar=苯基,Ⅲ:Ar=2,6-二甲基苯基)与三
                                                                      13
                                                              1
                 甲基铝反应得到了双核胺亚胺铝配合物(Ⅳ、Ⅴ)。利用 HNMR、 CNMR 和 X 射线单晶衍射仪对配合物Ⅳ、
                 Ⅴ结构进行了表征。通过Ⅳ、Ⅴ在苄醇(BnOH)的存在下催化 ε-己内酯开环聚合制备聚己内酯,并对反应条件
                 进行了优化。结果表明,配合物Ⅳ、Ⅴ具有单配体双金属中心结构,当 n(ε-己内酯)∶n(BnOH)∶n(Ⅳ或Ⅴ)=200∶
                                                                                     –1
                 4∶1 时,在 1.5 min 内 ε-己内酯转化率>97%,Ⅳ和Ⅴ的转化频率分别为 7840、9700 h ,远高于乙基桥联双核
                                                                 –1
                                     –1
                 胺亚胺铝配合物(1152 h )和单核胺亚胺铝配合物(2550 h );得到的聚合物相对分子质量可控,聚合反应
                 具有活性聚合的特点。
                 关键词:催化剂;铝配合物;ε-己内酯;开环聚合;胺-亚胺配体;催化技术
                 中图分类号:O641.4;TQ426;TQ316.3      文献标识码:A      文章编号:1003-5214 (2023) 02-0316-06



                     Dinuclear aluminum complexes bearing anilido-aldimine ligands:
                             Synthesis, structure and application in ring-opening

                                         polymerization of ε-caprolactone

                                                          3
                                                                                                   3*
                                                                       3
                                                 3
                                1,2
                    GAO Aihong , ZHAO Xiuxian , YOU Qi , LIU Xiaolei , YAO Wei   1,3* , JIANG Xuchuan
                 (1. School of Water Conservancy and Environment, University of Jinan, Jinan 250022, Shandong China; 2. Chemical
                 Technology Academy of Shandong Province, Qingdao University of Science  &  Technology, Jinan 250014, Shandong,
                 China; 3. School of Materials Science and Engineering, University of Jinan, Jinan 250022, Shandong, China)
                 Abstract: Dinuclear  anilido-aldimine aluminum complexes (Ⅳ,  Ⅴ) were  synthesized from  tetradentate
                 anilido-aldimine chelating  ligands (1R,2R)-[(NHAr)C 6H 4CH==N] 2C 6H 10 ( Ⅱ : Ar=phenyl;  Ⅲ : Ar=2,
                                                                          13
                                                                 1
                 6-dimethylphenyl) and  Al(CH 3) 3, and  characterized by  HNMR,  CNMR and  X  ray single crystal
                 diffractometer. The complexes  Ⅳ and  Ⅴ obtained were then employed to catalyze the ring-opening
                 polymerization of ε-caprolactone in the presence of benzyl alcohol (BnOH) to produce poly(ε-caprolactone),
                 and the reaction conditions were optimized. The results showed that both complexes  Ⅳ and  Ⅴ displayed
                 single ligand  bimetallic center structure.  The conversion rate exceeded  97% within  1.5 min when
                 n(ε-caprolactone)∶n(BnOH)∶n(Ⅳ or  Ⅴ)=200∶4∶1. Moreover,  the  turn over frequency  for  Ⅳ was
                               –1
                 7840 and 9700 h  for  Ⅴ, much higher than those of ethyl-bridged binuclear anilido-aldimine aluminum
                               –1
                                                                                  –1
                 complex (1152 h ) and mononuclear amine-imine aluminum complex (2550 h ). The relative molecular
                 mass of the polymer obtained was controllable, and the polymerization reaction showed the characteristics
                 of active polymerization.
                 Key words: catalyst; aluminum complex;  ε-caprolactone; ring-opening  polymerization; anilido-aldimine
                 ligands; catalysis technology



                 收稿日期:2022-05-17;  定用日期:2022-09-22; DOI: 10.10.13550/j.jxhg.20220469
                 作者简介:高爱红(1980—),女,博士,高级工程师,E-mail:hg078@qust.edu.cn。联系人:姚   伟(1980—),男,博士,副教授,
                 E-mail:stu_yaow@ujn.edu.cn;蒋绪川(1969—),男,博士,教授,E-mail:ism_jiangxc@ujn.edu.cn。
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