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

被引：96

作者：

Chen, Mu-Zi ^{[1
]}

Sun, Hong-Mei ^{[1
]}

Li, Wan-Fei ^{[1
]}

Wang, Zhing-Guo ^{[1
]}

Shen, Qi ^{[1
]}

Zhang, Yong ^{[1
]}

机构：

[1] Suzhou Univ, Key Lab Organ Synth Jiangsu Province, Coll Chem & Chem Engn, Suzhou 215006, Peoples R China

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2006年 / 691卷 / 11期

基金：

中国国家自然科学基金;

关键词：

iron complex; functionalized N-heterocyclic carbene; epsilon-caprolactone; ring-opening polymerization;

D O I：

10.1016/j.jorganchem.2006.01.031

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of anhydrous FeBr2 with two equivalents of in situ generated anionic aryloxo-functionalized N-heterocyclic carbene [NaO-4,6-di-C(CH3)(3)-C6H2-2-CH2{C(NCHCHNR)}] (R=CH(CH3)(2),NaL1; R=CH2Ph,NaL2) affords two bis-ligand Fe(II) complexes Fe-2(1) (1) and FeL22 (2) in good yield, respectively. Attempt to synthesize mono-ligand Fe(II) bromide by the 1:1 molar ratio of NaL to FeBr2 is unsuccessful, the same complexes of 1 and 2 were obtained. Both of 1 and 2 have been fully characterized by elemental analysis, H-1 NMR spectra and X-ray structure determination. Preliminary studies show that I can catalyze the ring-opening polymerization of c-caprolactone as a single component catalyst. The mechanism of the present ROP of epsilon-caprolactone has been investigated by the end group analysis. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：2489 / 2494

页数：6

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