Direct Synthesis of N,N-Dimethylated and β-Methyl N,N-Dimethylated Amines from Nitriles Using Methanol: Experimental and Computational Studies
作者:Bhaskar Paul、Sujan Shee、Dibyajyoti Panja、Kaushik Chakrabarti、Sabuj Kundu
DOI:10.1021/acscatal.8b00021
日期:2018.4.6
Direct and selective synthesis of N,N-dimethylated amines from nitriles using methanol as C1 building blocks is reported using an air- and moisture-stable ruthenium complex. Following this process, various aromatic as well as aliphatic nitriles were converted to the corresponding N-methylated amines. Interestingly, tandem C-methylation as well as N-methylation was achieved by introducing multiple methyl
据报道,使用空气和水分稳定的钌络合物,可以使用甲醇作为C1结构单元,从腈直接和选择性地合成N,N-二甲基胺。在该过程之后,将各种芳族腈和脂族腈转化为相应的N-甲基化胺。有趣的是,串联C-甲基化和N-甲基化是通过引入多个甲基实现的。通过与不同腈的制备规模反应以及抗过敏药“铁砧”的合成,揭示了该方法的实用方面。进行了几次动力学实验和详细的DFT计算,以了解该过程的机理。