Synthesis of rare earth metal complexes incorporating amido and enolate mixed ligands: Characterization and reactivity
Synthesis of rare earth metal complexes incorporating amido and enolate mixed ligands: Characterization and reactivity
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含有酰胺基和烯醇化物混合配体的稀土金属配合物的合成：表征和反应性
DOI：
10.1016/j.poly.2008.05.030
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发表时间：
2008-09
期刊：
影响因子：
2.6
通讯作者：
中科院分区：
文献类型：
--
作者：
2，6-(R)2C6H3NHSiMe3(R=IPR或Et)在四氢呋喃或正己烷中与过量的nBuLi反应，然后用LnCl3处理，生成不同类型的稀土金属络合物。N-三甲基硅基-2，6-二异丙基苯胺2，6-((CH2CHO)Ln[2，6-(iPr)2C6H3NSiMe3]2(μ-Cl)Li(THF)3(Ln=Y(1)，)2C6H3NHSiMe3与过量的nBuLi在四氢呋喃中反应，然后用LnCl3处理，得到了含酰胺和烯酸酯混合配体的配合物，通式为NbYb(2)。在正己烷中用nBuLi处理2，6-(Et)2C6H3NHSiMe3，然后用1/2或1/3当量处理，得到了式为[2，6-(Et)2C6H3NSiMe3]2Y(THF)(μ-Cl)2Li(THF)2(3)和{[2，6-(Et)2C6H3NSiMe3]3YCl}[Li(THF)4](4)的配合物。YCl3在四氢呋喃中的含量。所有化合物的结构均由单晶X-射线分析确定。研究了配合物1和2对芳香醛的反应活性，结果表明，配合物1和2的氨基配体可以选择性地与芳香醛反应，生成酰胺和醇的歧化产物。研究了在YCl3催化剂存在下，锂与芳香醛的反应。
The reactions of 2,6-(R)2C6H3NHSiMe3(R=iPr or Et) with excess nBuLi in THF or n-hexane, followed by treatment with LnCl3, produced different kinds of rare earth metal complexes. Complexes incorporating amido and enolate mixed ligands having the general formula (CH2CHO)Ln[2,6-(iPr)2C6H3NSiMe3]2(μ-Cl)Li(THF)3(Ln=Y(1), Yb(2)) were prepared by the reaction of N-trimethylsilyl-2,6-diisopropylaniline 2,6-(iPr)2C6H3NHSiMe3with excess nBuLi in THF, followed by treatment with LnCl3. Complexes with the formula [2,6-(Et)2C6H3NSiMe3]2Y(THF)(μ-Cl)2Li(THF)2(3) and {[2,6-(Et)2C6H3NSiMe3]3YCl}[Li(THF)4] (4) were isolated when 2,6-(Et)2C6H3NHSiMe3was treated with nBuLi in n-hexane, followed by treatment with 1/2 or 1/3equiv. of YCl3in THF, respectively. All the structures of the complexes were determined by single-crystal X-ray analyses. Investigation on the reactivity of complexes 1 and 2 towards aromatic aldehydes indicated that the amido ligand of complexes 1 and 2 could selectively react with aromatic aldehydes to afford the disproportionation products of amides and alcohols. The reaction of the lithium amide {[2,6-(iPr)2C6H3](Me3Si)N}Li with aromatic aldehydes in the presence of a catalytic amount of YCl3was also studied.
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影响因子：
2.8
作者：
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通讯作者：
W. Evans;Raul. Dominguez;T. Hanusa
影响因子：
2.8
作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
2.8
作者：
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通讯作者：
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影响因子：
5.2
作者：
Hoye, TR;Eklov, BM;Yao, LJ
通讯作者：
Yao, LJ