this photochemical ring contraction converts cycloalkanones into N-heterocycles in a few steps and in a stereospecific manner. To showcase the method, we performed an efficient formal synthesis of (−)-gephyrotoxin 287C.
N-活化的内酰胺的光
化学重排使得它们的环收缩与碳迁移到氮原子上同时发生。当与贝克曼重排结合时,该光
化学环收缩以几个步骤和立体定向方式将环烷酮转化为N-杂环。为了展示该方法,我们执行了(-)-gephyrotoxin 287C的有效形式合成。