Chemical Research in Chinese Universities ›› 2014, Vol. 30 ›› Issue (1): 87-90.doi: 10.1007/s40242-014-3183-2

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Zinc Complexes Supported by N, N-Dimethylaniline-arylamido Ligands:Synthesis, Characterization and Catalytic Properties for Ring-opening Polymerization of L-Lactide

YAO Wei1,2, XUE Yingzhao1, LIU Tiantian1, GAO Aihong1,2, WANG Yanfeng3   

  1. 1. School of Resources and Environment, University of Jinan, Jinan 250022, P. R. China;
    2. Shandong Provincial Engineering Research Center for Ecological Carbon Sink and Capture Utilization, University of Jinan, Jinan 250022, P. R. China;
    3. Shandong Academy of Medical Sciences Institute of Materia Medica, Jinan 250062, P. R. China
  • Received:2013-04-23 Revised:2013-05-15 Online:2014-02-01 Published:2013-06-03
  • Contact: YAO Wei,E-mail:stu_yaow@ujn.edu.cn; GAO Aihong,E-mail:gaolijlu@163.com E-mail:stu_yaow@ujn.edu.cn; gaolijlu@163.com
  • Supported by:

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

Abstract:

The reaction of bidentate N,N-dimethylaniline-arylamido ligands, o-C6H4NMe2(CH2NHAr)(Ar = Ph, 1a; 2,6-Me2C6H3, 1b; 2,6-Et2C6H3, 1c; 2,6-iPr2C6H3, 1d) with ZnEt2 yields the complexes o-C6H4(NMe2)(CH2NAr)ZnEt (2a—2d), respectively. All the complexes were characterized by 1H and 13C NMR spectroscopy and elemental analyses. It was found that all the zinc complexes were efficient catalysts for the ring-opening polymerization of L-lactide in the presence of benzyl alcohol with good molecular weight control and narrow polydispersity.

Key words: Zinc complex, Ring-opening polymerization, L-Lactide