Aluminum complexes supported by tridentate aminophenoxide ligand as efficient catalysts for ring-opening polymerization of ε-caprolactone

被引:110
作者
Chen, CT [1 ]
Huang, CA [1 ]
Huang, BH [1 ]
机构
[1] Natl Chung Hsing Univ, Dept Chem, Taichung 402, Taiwan
关键词
D O I
10.1021/ma0492014
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Aluminum complexes bearing dianionic amine bis(phenolate) ligand are described. Reactions of ligand precursors H2O2NMe or H2O2NPr [H2O2NMe = (CH3)N-(CH2-2-HO-3.5-C6H2(Bu-t)(2))(2); H2O2NPr = (CH3CH2CH2)N-(CH2-2-HO-3,5-C6H2(Bu-t)(2))2] with 1.1 mol equiv of AlMe3 in toluene afford MeAlO2-NMe) (1) and MeAI(O2NPr) (2) as four-coordinate aluminum methyl complexes. The molecular structures are reported for compounds 1 and 2. Both compounds show excellent catalytic activity toward the ring-opening polymerization of is an element of-caprolactone in the presence of benzyl alcohol.
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收藏
页码:7968 / 7973
页数:6
相关论文
共 20 条
[1]   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
[2]   CONDENSATION OF HALOPHENOLS WITH FORMALDEHYDE + PRIMARY AMINES [J].
BURKE, WJ ;
GLENNIE, ELM ;
WEATHERBEE, C .
JOURNAL OF ORGANIC CHEMISTRY, 1964, 29 (04) :909-&
[3]   Aluminium metal complexes supported by amine bis-phenolate ligands as catalysts for ring-opening polymerization of ε-caprolactone [J].
Chen, CT ;
Huang, CA ;
Huang, BH .
DALTON TRANSACTIONS, 2003, (19) :3799-3803
[4]   Reactions of 2,2′-methylenebis(4-chloro-6-isopropyl-3-methylphenol) with trimethylaluminum:: Highly efficient catalysts for the ring-opening polymerization of lactones [J].
Chen, HL ;
Ko, BT ;
Huang, BH ;
Lin, CC .
ORGANOMETALLICS, 2001, 20 (24) :5076-5083
[5]   Polymerization catalysis at the millennium: frontiers in stereoselective, metal-catalyzed polymerization [J].
Coates, GW .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 2002, (04) :467-475
[6]   Efficient "living" and "immortal" polymerization of lactones and diblock copolymer of ε-CL and δ-VL catalyzed by aluminum alkoxides [J].
Ko, BT ;
Lin, CC .
MACROMOLECULES, 1999, 32 (25) :8296-8300
[7]   A highly efficient catalyst for the "living" and "immortal" polymerization of ε-caprolactone and L-lactide [J].
Liu, YC ;
Ko, BT ;
Lin, CC .
MACROMOLECULES, 2001, 34 (18) :6196-6201
[8]   Controlled ring-opening polymerization of ε-caprolactone promoted by "in situ" formed yttrium alkoxides [J].
Martin, E ;
Dubois, P ;
Jérôme, R .
MACROMOLECULES, 2000, 33 (05) :1530-1535
[9]   In situ formation of yttrium alkoxides:: A versatile and efficient catalyst for the ROP of ε-caprolactone [J].
Martin, E ;
Dubois, P ;
Jérôme, R .
MACROMOLECULES, 2003, 36 (16) :5934-5941
[10]   Polymerization of lactide and related cyclic esters by discrete metal complexes [J].
O'Keefe, BJ ;
Hillmyer, MA ;
Tolman, WB .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 2001, (15) :2215-2224