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Synthesis and characterization of organoaluminum compounds containing quinolin-8-amine derivatives and their catalytic behaviour for ring-opening polymerization of epsilon-caprolactone
Shen, Miao1,2; Zhang, Wenjuan1,2; Nomura, Kotohiro3; Sun, Wen-Hua1,2
2009
Source PublicationDALTON TRANSACTIONS
ISSN1477-9226
Issue41Pages:9000-9009
AbstractTreatment of N-aryl-2-methylquinolin-8-amines (L1-L3) with one equivalent AlMe(3) or AlEt(3) afforded dialkyl aluminum compounds (C1-C5), whereas the stoichiometric reaction of 2-((2-(1H-benzo[d] imidazol-2-yl) quinolin-8-ylimino) methyl) phenols (L4-L6) with either AlMe3 or AlEt3 produced monoalkyl aluminum compounds (C6-C10). All the organoaluminum compounds were characterized by (1)H, (13)C NMR and elemental analysis, and the molecular structures of representative compounds were confirmed by X-ray crystallography. With bidentate ligands, compounds C1 and C3 showed tetrahedron geometry around Al center, while compound C7 has a distorted square pyramidal geometry around Al center with the framework comprising the tetradentate ligand. The dialkyl aluminum compounds (C1-C5) performed high catalytic activities towards the ring opening polymerization (ROP) of epsilon-caprolactone (epsilon-CL), in parallel, the monoalkyl aluminum compounds (C6-C10) showed negative results for the polymerization of epsilon-CL. In the presence or absence of benzyl alcohol (BnOH), the four-coordination aluminum compounds (C1-C5) are both highly active towards the ring opening polymerization (ROP) of epsilon-caprolactone with resulting high conversation of e-caprolactone and polymers with high molecular weight. In the presence of one equivalent of BnOH, polymerization of epsilon-caprolactone proceeded in a living manner and molecular weights of the obtained poly(epsilon-caprolactone)s could be precisely controlled by adapting the reaction conditions.
DOI10.1039/b910155a
Indexed BySCI
Language英语
WOS IDWOS:000270761900027
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:63[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67364
Collection中国科学院化学研究所
Corresponding AuthorSun, Wen-Hua
Affiliation1.Chinese Acad Sci, Key Lab Engn Plast, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
3.Nara Inst Sci & Technol NAIST, Grad Sch Mat Sci, Nara 6300101, Japan
Recommended Citation
GB/T 7714
Shen, Miao,Zhang, Wenjuan,Nomura, Kotohiro,et al. Synthesis and characterization of organoaluminum compounds containing quinolin-8-amine derivatives and their catalytic behaviour for ring-opening polymerization of epsilon-caprolactone[J]. DALTON TRANSACTIONS,2009(41):9000-9009.
APA Shen, Miao,Zhang, Wenjuan,Nomura, Kotohiro,&Sun, Wen-Hua.(2009).Synthesis and characterization of organoaluminum compounds containing quinolin-8-amine derivatives and their catalytic behaviour for ring-opening polymerization of epsilon-caprolactone.DALTON TRANSACTIONS(41),9000-9009.
MLA Shen, Miao,et al."Synthesis and characterization of organoaluminum compounds containing quinolin-8-amine derivatives and their catalytic behaviour for ring-opening polymerization of epsilon-caprolactone".DALTON TRANSACTIONS .41(2009):9000-9009.
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