Magnesium Pyrazolyl-Indolyl Complexes as Catalysts for Ring-Opening Polymerization of L-Lactide

被引：7
|
作者：
Chen, Chi-Tien [1 ]
Lin, Deng-Hao [1 ]
Peng, Kuo-Fu [1 ]
机构：
[1] Natl Chung Hsing Univ, Dept Chem, Taichung 402, Taiwan
来源：
POLYMERS | 2015年 / 7卷 / 10期
关键词：
magnesium; pyrazolyl; indolyl; ring-opening polymerization; biodegradable; METAL-COMPLEXES; EPSILON-CAPROLACTONE; PYRROLYL LIGANDS; CYCLIC ESTERS; INITIATORS; FUNCTIONALIZATION; METHODOLOGIES; REACTIVITY; BIDENTATE; ZIRCONIUM;
D O I：
10.3390/polym7101492
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series indole-based ligand precursors, Pz(R)IndH (R = H, Pz(H)IndH; R = Me, Pz(Me)IndH; R = t-Bu, Pz(tBu)IndH; and R = Ph, Pz(Ph)IndH), have been synthesized via copper-catalyzed N-arylation (for Pz(H)IndH) or the Bartoli indole synthesis (for Pz(Me)IndH, Pz(tBu)IndH and Pz(Ph)IndH) reactions with moderate to high yield. Reactions of these ligand precursors with 0.7 equivalent of (MgBu2)-Bu-n in THF (for 1) or hexane (for 2-4) afforded the bis-indolyl magnesium complexes 1-4, respectively. All the ligand precursors and related magnesium complexes have been characterized by NMR spectroscopy and elemental analyses. The molecular structure is reported for compound 1. These novel magnesium complexes demonstrate efficient catalytic activities for the ring-opening polymerization of L-lactide in the presence of alcohol.
引用
收藏
页码：1954 / 1964
页数：11
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