<i>N</i>-Bromosuccinimide-Mediated Radical Cyclization of 3-Arylallyl Azides: Synthesis of 3-Substituted Quinolines
作者:Wei-Xia Wang、Qing-Zhao Zhang、Tian-Qi Zhang、Zhan-Shan Li、Wei Zhang、Wei Yu
DOI:10.1002/adsc.201400637
日期:2015.1.12
an effective means to convert methyl 2‐(azidomethyl)‐3‐arylpropenoates and 2‐(azidomethyl)‐3‐arylacrylonitriles to the corresponding iminyl radicals via α‐hydrogen abstraction and subsequent extrusion of dinitrogen. Thus formed iminyl radicals then undergo intramolecular ortho attack on the aryl ring, affording methyl quinoline‐3‐carboxylates and quinoline‐3‐carbonitriles respectively.
N-溴代琥珀酰亚胺的可见光照射是一种有效的手段,可通过α-氢提取并随后挤出二氮,将2-(叠氮基甲基)-3-芳基丙烯酸甲酯和2-(叠氮基甲基)-3-芳基丙烯腈转化为相应的亚氨基。如此形成的亚氨基自由基随后在芳基环上进行分子内邻位攻击,分别得到喹啉-3-羧酸甲酯和喹啉-3-腈。