Dialkylaluminium 2-imidazolylphenolates: Synthesis, characterization and ring-opening polymerization behavior towards lactides | |
Department | OSSO国家重点实验室 |
Zhang WJ(张文娟)1; Wang, Youhong1; Wang, Lin1; Carl Redshaw3; Sun WH(孙文华)1,2; Sun WH(孙文华) | |
2014 | |
Source Publication | Journal of Organometallic Chemistry |
ISSN | 0022-328X |
Volume | 750Pages:65-73 |
Abstract | The stoichiometric reaction of the 2-imidazolylphenols (L1–L9) with the trialkylaluminium reagents AlR3 (R = Me, Et and iBu), afforded the corresponding dialkylaluminium 2-imidazolylphenolate complexes [R2Al(L1–L9)] (C1–C11), which were characterized by 1H/13C NMR spectroscopy and by elemental analysis. The molecular structures of the representative complexes C1, C2, C4, C6 and C11 were determined by single-crystal X-Ray diffraction, and revealed a distorted tetrahedral geometry at aluminum. These dialkylaluminium 2-imidazolylphenolates (C1–C11) could efficiently catalyze the ring-opening polymerization of lactides to afford high molecular weight polylactide, both in the presence and absence of BnOH, and as such represent rare examples of the use of bi-dentate ligation at aluminum in such lactide polymerization systems. On the basis of the polymerization results for l-lactide, d-lactide and rac-lactide, the nature of the ligands and the aluminum bound alkyls were found to significantly affect the catalytic activity as well as the properties of the resultant polylactides. |
Keyword | Ring-opening Polymerization Polylactide Aluminum 2-imidazolylphenolate |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1016/j.jorganchem.2013.11.002 |
Funding Organization | National Natural Science Foundation of China (No. 20904059;51273202) |
Indexed By | SCI |
If | 2.173 |
Language | 英语 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/21260 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Carl Redshaw; Sun WH(孙文华) |
Affiliation | 1.Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China 2.State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 3.Department of Chemistry, University of Hull, Hull HU6 7RX, UK |
Recommended Citation GB/T 7714 | Zhang WJ,Wang, Youhong,Wang, Lin,et al. Dialkylaluminium 2-imidazolylphenolates: Synthesis, characterization and ring-opening polymerization behavior towards lactides[J]. Journal of Organometallic Chemistry,2014,750:65-73. |
APA | Zhang WJ,Wang, Youhong,Wang, Lin,Carl Redshaw,Sun WH,&孙文华.(2014).Dialkylaluminium 2-imidazolylphenolates: Synthesis, characterization and ring-opening polymerization behavior towards lactides.Journal of Organometallic Chemistry,750,65-73. |
MLA | Zhang WJ,et al."Dialkylaluminium 2-imidazolylphenolates: Synthesis, characterization and ring-opening polymerization behavior towards lactides".Journal of Organometallic Chemistry 750(2014):65-73. |
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