| Synthesis,structure and catalytic behavior of yttrium complexes bearing a diaminobis（phenolate） ligand |
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| 作者姓名： | SONG FengKui YAN ChunHui SUN HongMei YAO YingMing SHEN Qi ZHANG Yong |
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| 作者单位： | Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science,Soochow University, Suzhou 215123, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (Grant No. 20771078), Natural Science Foundation of Jiangsu Province (Grant No. BK2007505), and Major Basic Research Project of Natural Science Foundation of Jiangsu Higher Education Institutions (Grant No. 07KJA15014). |
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| 摘 要： | Yttrium complexes stabilized by a diaminobis（phenolate） ligand were synthesized and their catalytic behavior was explored. Reaction of YCI3 with 1 equiv of LNa2 L= Me2NCH2CH2N{CH2-（2-O-C6H2-^1Bu2-3,5）}2] gave the yttrium chloride LYCI（THF） （1） in 92% yield. Complex I can be used as starting material to prepare the yttrium amido derivative. Complex 1 reacted with 1 equiv of LiNPh2 in THF to afford the expected yttrium amido complex LYNPh2 （2） in high yield. Both of complexes 1 and 2 have been well detected by elemental analysis, NMR spectra and single-crystal X-ray analysis. It was found that complex 2 can efficiently initiate the ring-opening polymerization of L-lactide and ε-caprolactone, and a controlled manner is observed in the former case.
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| 关 键 词： | 催化性能 钇稳定 配合物 合成 单晶X射线衍射分析 酰胺衍生物 结构 核磁共振光谱 |
| 收稿时间： | 2009-03-26 |
| 修稿时间： | 2009-05-17 |
Synthesis, structure and catalytic behavior of yttrium complexes bearing a diaminobis(phenolate) ligand |
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| SONG FengKui,YAN ChunHui,SUN HongMei,YAO YingMing,SHEN Qi,ZHANG Yong.Synthesis, structure and catalytic behavior of yttrium complexes bearing a diaminobis(phenolate) ligand[J].Chinese Science Bulletin,2009,54(18):3231-3236. |
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| Authors: | FengKui Song ChunHui Yan HongMei Sun YingMing Yao Qi Shen Yong Zhang |
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| Institution: | Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China |
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| Abstract: | Yttrium complexes stabilized by a diaminobis(phenolate) ligand were synthesized and their catalytic behavior was explored. Reaction of YCl3 with 1 equiv of LNa2 L= Me2NCH2CH2N{CH2-(2-O-C6H2-tBu2-3, 5)}2] gave the yttrium chloride LYCl(THF) (1) in 92% yield. Complex 1 can be used as starting material to prepare the yttrium amido derivative. Complex 1 reacted with 1 equiv of LiNPh2 in THF to afford the expected yttrium amido complex LYNPh2 (2) in high yield. Both of complexes 1 and 2 have been well detected by elemental analysis, NMR spectra and single-crystal X-ray analysis. It was found that com-plex 2 can efficiently initiate the ring-opening polymerization of L-lactide and ε-caprolactone, and a controlled manner is observed in the former case. |
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| Keywords: | rare earth metal yttrium bis(phenolate) ligand L-lactide &epsilon -caprolactone ring-opening polymerization |
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