The first examples of intramolecular addition of primary amidyl radicals to olefins are described. Amidyl radicals were generated from N-(phenylthio)amides in refluxing benzene using a catalytic amount of 2,2′-azobis(isobutyronitrile) (5 mol%) and tributyltin hydride (~2.2 equiv.). The resulting yields of cyclic products ranged from 63% to 85%.Key words: radical cyclization, amidyl radicals, nitrogen heterocycles.
本文描述了首次将一级酰胺自由基加成到烯烃中的例子。在回流苯中,利用2,2'-偶氮叔丁腈(5mol%)和三丁基锡氢化物(约2.2当量)催化生成了N-(苯硫基)酰胺自由基。所得的环状产物产率在63%至85%之间。关键词:自由基环化,酰胺自由基,氮杂环化合物。