Heterobimetallic aluminium and zinc complex with N-arylanilido-imine ligand: Synthesis, structure and catalytic property for ring-opening polymerization of ε-caprolactone

被引：22

作者：

Gao, Ai-Hong ^{[1
]}

Yao, Wei ^{[1
]}

Mu, Ying ^{[1
]}

Gao, Wei ^{[1
]}

Sun, Ming-Tai ^{[1
]}

Su, Qing ^{[1
]}

机构：

[1] Jilin Univ, Sch Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China

来源：

POLYHEDRON | 2009年 / 28卷 / 13期

基金：

中国国家自然科学基金;

关键词：

Aluminium; Zinc; Caprolactone; EFFICIENT CATALYSTS; LACTIDES; SINGLE; ARYLOXIDES; INITIATOR; MECHANISM; TITANIUM;

D O I：

10.1016/j.poly.2009.05.037

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Treatment of a N-arylanilido-imine ligand [ortho-C6H4(NHAr)CH=N](2)CH2CH2 (Ar = 2,6-Me2C6H3) (LH2) with one equiv. of AlMe3 affords a monometallic complex [C6H4(NHAr)-CH=N)]CH2CH2(C6H4(NAr) CH=NAlMe2) (1). The monometallic complex 1 reacts with one equiv. of ZnEt2 to give a heterobimetallic complex [C6H4(NAr)-CH=NZnEt]CH2CH2[C6H4(NAr)-CH=NAlMe2] (2). Both complexes were characterized by H-1 and C-13 NMR spectroscopy and elemental analyses, and the molecular structures of 1 and 2 were determined by X-ray diffraction analysis. The complexes 1 and 2 both are efficient catalysts for ring-opening polymerization of epsilon-caprolactone in the presence of benzyl alcohol yielding polymers with narrow polydispersity values and complex 2 initiates the polymerization in a controllable manner. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2605 / 2610

页数：6

共 45 条

[1] Recent developments in ring opening polymerization of lactones for biomedical applications [J].

Albertsson, AC ;

Varma, IK .

BIOMACROMOLECULES, 2003, 4 (06) :1466-1486

[2] Electronic influence of ligand substituents on the rate of polymerization of ε-caprolactone by single-site aluminium alkoxide catalysts [J].

Alcazar-Roman, LM ;

O'Keefe, BJ ;

Hillmyer, MA ;

Tolman, WB .

DALTON TRANSACTIONS, 2003, (15) :3082-3087

[3] An aluminum complex supported by a fluorous diamino-dialkoxide ligand for the highly productive ring-opening polymerization of ε-caprolactone [J].

Amgoune, A ;

Lavanant, L ;

Thomas, CM ;

Chi, Y ;

Welter, R ;

Dagorne, S ;

Carpentier, JF .

ORGANOMETALLICS, 2005, 24 (25) :6279-6282

[4]

[Anonymous], 1997, SHELXTL 97 PROGRAM R

[5] Bimetallic fluorine-substituted anilido-aldimine zinc complexes for CO2/(cyclohexene oxide) copolymerization [J].

Bok, Taekki ;

Yun, Hoseop ;

Lee, Bun Yeoul .

INORGANIC CHEMISTRY, 2006, 45 (10) :4228-4237

[6]

Breyfogle LE, 2006, DALTON T, P928, DOI 10.1039/b507014g

[7] Ring-opening polymerization of ε-caprolactone initiated with titanium n-propoxide or titanium phenoxide [J].

Cayuela, J ;

Bounor-Legaré, V ;

Cassagnau, P ;

Michel, A .

MACROMOLECULES, 2006, 39 (04) :1338-1346

[8] Aluminum complexes supported by tridentate aminophenoxide ligand as efficient catalysts for ring-opening polymerization of ε-caprolactone [J].

Chen, CT ;

Huang, CA ;

Huang, BH .

MACROMOLECULES, 2004, 37 (21) :7968-7973

[9] A highly efficient initiator for the ring-opening polymerization of lactides and ε-caprolactone:: A kinetic study [J].

Chen, HY ;

Huang, BH ;

Lin, CC .

MACROMOLECULES, 2005, 38 (13) :5400-5405

[10] Synthesis, structure of functionalized N-heterocyclic carbene complexes of Fe(II) and their catalytic activity for ring-opening polymerization of ε-caprolactone [J].

Chen, Mu-Zi ;

Sun, Hong-Mei ;

Li, Wan-Fei ;

Wang, Zhing-Guo ;

Shen, Qi ;

Zhang, Yong .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2006, 691 (11) :2489-2494

← 1 2 3 4 5 →