Highly efficient Amination in Neat Water of Benzyl Chlorides with Dialkylformamides Catalysed by <i>N</i>-Heterocyclic Carbene-Palladium(II)-1-Methylimidazole Complex
作者:Wen-Xin Chen、Cai-Yun Zhang、Jian-Mei Lu
DOI:10.3184/174751913x13787959859344
日期:2013.10
Dialkylformamides are excellent N-sources in the amination of benzyl chlorides when catalysed by a NHC-Pd(II)-Im complex. In the presence of NaOH and the catalyst, variously substituted benzyl chlorides and five different dialkylformamides reacted smoothly to afford the corresponding N,N-dialkyl-benzylamines in good to almost quantitative yields in eco-friendly solvent water at 50 °C within 3 h.
当由 NHC-Pd(II)-Im 复合物催化时,二烷基甲酰胺是苄基氯胺化过程中极好的 N 源。在 NaOH 和催化剂存在下,不同取代的苄基氯和五种不同的二烷基甲酰胺在 50°C 的环保溶剂水中顺利反应,在 3 小时内得到相应的 N,N-二烷基-苄胺,产率几乎是定量的。