Radical ring opening reaction of pyridine fused heterocycles with IBA-N3 catalyzed by tetra-n-butylammonium iodide
作者:Ruonan Wang、Shiwei Wang、Dayong Li、Feiyang Ye、Yuting Leng、Yangjie Wu、Junbiao Chang、Yusheng Wu
DOI:10.1016/j.tet.2019.02.061
日期:2019.4
A mild, metal-free and efficient synthesis of 2,3-disubstituted acrylonitriles and α-iminonitriles through radical ring opening reaction of pyridine fused heterocycles has been developed. The tetra-n-butylammonium iodide catalyst acts as a formal one-electron donor. Compared to the previous methods, which require excessive amounts of highly explosive azide sources and the addition of oxidants, this
通过吡啶稠合杂环的自由基开环反应,开发了一种温和,无金属且有效的合成2,3-二取代的丙烯腈和α-亚胺腈的方法。四正丁基碘化铵催化剂起正式的单电子供体的作用。与以前的方法相比,以前的方法需要过量的高爆炸性叠氮化物源并添加氧化剂,这是一种安全,方便的转化方法。