Brønsted Acid Catalyzed Benzylic C–H Bond Functionalization of Azaarenes: Nucleophilic Addition to Nitroso Compounds
作者:Xu Gao、Feng Zhang、Guojun Deng、Luo Yang
DOI:10.1021/ol501422k
日期:2014.7.18
A practical Brønsted acid promoted benzylicC–Hfunctionalization of 2-alkylazaarenes and nucleophilic addition to nitroso compounds was developed under mild conditions. Switched by Brønsted acids, this method can afford azaarene-2-aldimines, azaarene-2-carbaldehyde, or azaarene-2-oximes selectively. No metal, base, oxidant, or other additives were required.
[NN]‐Chelate nickel complexes with Schiff base ligands: Synthesis, structure and catalytic activity in green amidation reaction
作者:Wen Guo、Zhen‐Jiang Liu、Fanhong Wu、Yu‐Zhou Luo、Zi‐Jian Yao
DOI:10.1002/aoc.6808
日期:2022.9
A series of N,N-coordinate nickel (II) complexes with Schiff base ligands have been synthesized. All N,N-coordinate nickel (II) complexes 1–4 were well characterized by IR and elemental analysis. Molecular structure of complex 1 was further characterized by singlecrystal X-ray diffraction analysis. All air and moisture stable nickel complexes showed efficient catalytic activity for the amidation reaction
已经合成了一系列具有席夫碱配体的N , N配位镍 (II) 配合物。所有N , N配位镍 (II) 配合物1 – 4都通过 IR 和元素分析进行了很好的表征。配合物1的分子结构通过单晶X射线衍射分析进一步表征。所有对空气和水分稳定的镍配合物对多种酰胺和伯醇的酰胺化反应均显示出有效的催化活性。N-烷基化酰胺以良好至优异的收率得到,释放水作为唯一的副产物。多种类型的官能团在这种反应条件下耐受良好。此外,还进行了对照实验以了解这种镍催化方案。