Chemical Research in Chinese Universities ›› 2014, Vol. 30 ›› Issue (5): 874-878.doi: 10.1007/s40242-014-3507-2

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Synthesis and Characterization of Dinuclear Aluminum Complexes Bearing N,N-Dialkylaniline-amido Ligands and Its Catalytic Properties for Lactone Polymerization

HAN Yancheng1, ZHU Guangyun1, ZHANG Mengmeng1, WANG Shuai1, YAO Wei1,2, GAO Aihong1,2, LU Ping3   

  1. 1. School of Resources and Environment, Jinan 250022, P. R. China;
    2. Shandong Provincial Engineering Research Center for Ecological Carbon Sink and Capture Utilization, Jinan 250022, P. R. China;
    3. School of Chemistry, University of Jinan, Jinan 250022, P. R. China
  • Received:2013-11-18 Revised:2014-05-14 Online:2014-10-01 Published:2014-09-22
  • Contact: YAO Wei, GAO Aihong E-mail:stu_yaow@ujn.edu.cn;gaoahujn@163.com
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.21104026).

Abstract:

Two ligands[ortho-C6H4NR2(CH2NH)]2CH2CH2(3: R=Me; 4: R=Et) were prepared by the reduction of preligands[ortho-C6H4NR2(CH=N)]2CH2CH2(1: R=Me; 2: R=Et). These ligands reacted with AlMe3 to afford the corresponding dinuclear aluminum complexes {AlMe2[ortho-C6H4NR2(CH2N)]}2CH2CH2(5: R=Me; 6: R=Et). All the compounds were characterized by 1H and 13C nuclear magnetic resonance(NMR) spectroscopies and elemental analyses. The catalytic properties of the aluminum complexes towards the ring-opening polymerization of lactones were investigated in the presence of benzyl alcohol. All the polymerization reactions were proceeded in a controlled manner.

Key words: Dinuclear aluminum, Ring-opening polymerization, Lactone