Synthesis of Enamides by Ruthenium-Catalyzed Reaction of Alkyl Azides with Acid Anhydrides in Ionic Liquid
作者:Han Kyu Pak、Junghoon Han、Mina Jeon、Yongjin Kim、Yearang Kwon、Jin Yong Park、Young Ho Rhee、Jaiwook Park
DOI:10.1002/cctc.201500935
日期:2015.12
Enamides were synthesized by a ruthenium‐catalyzed one‐pot, one‐step procedure from alkyl azides and acid anhydrides. The substrate scope includes not only secondary azides, but also primary aliphatic ones to give a wide range of enamides containing various functional groups. This one‐step procedure was based on the newly discovered activity of Severin's diruthenium complex ([Cp^RuCl2]2: Cp^=η5‐1‐methoxy‐2
通过钌催化的一步法,一步法由烷基叠氮化物和酸酐合成酰胺。底物的范围不仅包括仲叠氮化物,而且还包括伯脂族伯酸,以得到各种包含各种官能团的酰胺。这种一步程序是基于塞韦林的二钌复合物(混合[Cp ^的RuCl的新发现的活性2 ] 2:的Cp ^ =η 5 -1-甲氧基-2,4-二-叔-丁基-3-新戊基环戊二烯基),用于将烷基叠氮化物转化为离子液体中相应的NH亚胺中间体。在Severin配合物与叠氮化物的化学计量反应中观察到钌四烯配合物的形成,烷基化叠氮化物充当了NH亚胺中间体的形成催化剂。