Lanthanide Amido Complexes Incorporating Amino-Coordinate-Lithium Bridged Bis(indolyl) Ligands: Synthesis, Characterization, and Catalysis for Hydrophosphonylation of Aldehydes and Aldimines
作者:Xiancui Zhu、Shaowu Wang、Shuangliu Zhou、Yun Wei、Lijun Zhang、Fenhua Wang、Zhijun Feng、Liping Guo、Xiaolong Mu
DOI:10.1021/ic300137r
日期:2012.7.2
Two series of new lanthanide amido complexes supported by bis(indolyl) ligands with amino-coordinate-lithium as a bridge were synthesized and characterized. The interactions of [(Me3Si)2N]3LnIII(μ-Cl)Li(THF)3 with 2 equiv of 3-(CyNHCH2)C8H5NH in toluene produced the amino-coordinate-lithium bridgedbis(indolyl) lanthanide amides [μ-[η1:η1:η1:η1-3-(CyNHCH2)Ind]2Li}Ln[N(SiMe3)2]2] (Cy = cyclohexyl,
Synthesis, structure, and catalytic activity of novel trinuclear rare-earth metal amido complexes incorporating μ–η<sup>5</sup>:η<sup>1</sup>bonding indolyl and μ<sub>3</sub>-oxo groups
temperatures of 75–80 °C afforded the novel trinuclear rare-earth metal amido complexes incorporating the indolyl ligand in μ–η5:η1 bonding modes and a μ3-O group, which is believed to originate from cleavage of the THF ring based on experimental results. Reactions of 2-(1H-indol-3-yl)-N-((1-methyl-1H-pyrrol-2-yl)methylene)ethanamine with rare-earth metal(III) amides [(Me3Si)2N]3REIII(μ-Cl)Li(THF)3 (RE = Yb
<i>N</i>-Heterocyclic Carbenes Catalyzed Phospho-Aldol Reaction of Aldehydes
作者:Lin He、Zhihua Cai、Xiaowei Ma、Guangfen Du
DOI:10.1002/cjoc.201300615
日期:2013.12
AbstractAn efficient phospho‐aldol reaction of aldehydes catalyzed by N‐heterocyclic carbenes (NHCs) has been developed. With 10 mol% stable NHC 1,3‐bis(2,6‐diisopropylphenyl)imidazol‐2‐ylidene, various aldehydes reacted with dialkylphosphites smoothly to provide α‐hydroxy phosphonates in 59% –99% yield. In this process, NHC was assumed to function as a carbon‐centered br?nsted base.
Quast, Helmut; Heuschmann, Manfred, Liebigs Annalen der Chemie, 1981, # 5, p. 977 - 992
作者:Quast, Helmut、Heuschmann, Manfred
DOI:——
日期:——
QUAST H.; HEUSCHMANN H., LIEBIGS ANN. CHEM., 1981, NO 5, 977-992