Synthesis, characterization and catalytic activity of rare-earth metal amides incorporating cyclohexyl bridged bis(β-diketiminato) ligands
作者:Hui Miao、Shaowu Wang、Xiancui Zhu、Shuangliu Zhou、Yun Wei、Qingbing Yuan、Xiaolong Mu
DOI:10.1039/c7ra07565k
日期:——
characterized by 1H NMR and 13C NMR spectral analyses. The structures of complexes 1a–d were determined by single-crystal X-ray analyses. Investigation of the catalytic properties of the complexes indicated that all complexes exhibited a high catalytic activity towards the addition of diphenylphosphine oxide to β-nitroalkene and α,β-unsaturated carbonylderivatives with an excellent regioselectivity
一系列有机稀土金属酰胺,它们掺入具有手性的环己基桥联的双(β-二酮亚胺基)配体,通式为L REN(SiMe 3)2(L 1 =(1 S,2 S)-1,2-Cy [NC( Me)CHC(Me)NAr] 2,Ar = 2,6-Et 2 C 6 H 3,RE = Nd(1a),Dy(1b),Yb(1c),Y(1d); L 2 =(1 R,2 R)-1,2-Cy [NC(Me)CHC(Me)NAr] 2,Ar = 2,6- i -Pr 2 C通过[(Me 3 Si) 2 N] 3 RE的反应以高收率合成了6 H 3,RE = Nd( 2a),Gd( 2b),Dy( 2c),Er( 2d),Y( 2e))。具有H 2 L 1和H 2 L 2的III(μ-Cl)Li(THF) 3。所有化合物均通过光谱法和元素分析充分表征。配合物1d和2e的特征还在于1 H NMR和131 H NMR光谱分析。配合物1
Hydrophosphorylation of electron-deficient alkenes and alkynes mediated by convergent paired electrolysis
A straightforward and practical strategy for hydrophosphorylation of electron-deficient alkenes and alkynes to access γ-ketophosphine oxides, enabled by CPE strategy in the absence of a metal, base, and redox reagent, has been described.