Cobalt-Catalyzed Oxidative Annulation of Nitrogen-Containing Arenes with Alkynes: An Atom-Economical Route to Heterocyclic Quaternary Ammonium Salts
作者:Sekar Prakash、Krishnamoorthy Muralirajan、Chien-Hong Cheng
DOI:10.1002/anie.201509316
日期:2016.1.26
nitrogen‐containing arenes with alkynes proceeds by C−H activation, thus leading to biologically useful quaternary ammonium salts, including pyridoisoquinolinium, cinnolinium, isoquinolinium, and quinolizinium salts, in high yields. The results are comparable to those reactions catalyzed by rhodium and ruthenium complexes. The transformation of the salts into various N‐heterocycles has also been demonstrated.
含氮芳烃与炔烃的四次钴催化氧化环化反应通过CH活化进行,从而以高收率产生了生物学上有用的季铵盐,包括吡啶基异喹啉鎓盐,cinnolinium,异喹啉鎓盐和quinolizinium盐。结果与铑和钌络合物催化的反应相当。还证明了将盐转化为各种N-杂环的方法。